Lincoln Nautilus Manuals

Lincoln Nautilus: Front Seats / Front Seats. Diagnosis and Testing

DTC Chart: DDM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  DDM DTC Chart


  DTC Description Action
B1C03:23 Memory #1 Switch: Signal Stuck Low   GO to Pinpoint Test H
B1C04:23 Memory #2 Switch: Signal Stuck Low   GO to Pinpoint Test H
B1C05:23 Memory #3 Switch: Signal Stuck Low   GO to Pinpoint Test H
All other Diagnostic Trouble Codes (DTCs) -  
REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).

DTC Chart: DSM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  DSM DTC Chart


  DTC Description Action
B1060:09 Seat Headrest Motor Output: Component Failure   GO to Pinpoint Test G
B1060:11 Seat Headrest Motor Output: Circuit Short To Ground   GO to Pinpoint Test G
B1060:12 Seat Headrest Motor Output: Circuit Short To Battery   GO to Pinpoint Test G
B1060:13 Seat Headrest Motor Output: Circuit Open   GO to Pinpoint Test G
B1060:1A Seat Headrest Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test G
B1060:31 Seat Headrest Motor Output: No Signal   GO to Pinpoint Test H
B106D:24 Headrest Up Switch: Signal Stuck High   GO to Pinpoint Test G
B106E:24 Headrest Down Switch: Signal Stuck High   GO to Pinpoint Test G
B1168:11 Seat Headrest Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test H
B1168:12 Seat Headrest Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test H
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14C5:24 Seat Headrest Forward Switch: Signal Stuck High   GO to Pinpoint Test G
B14C6:24 Seat Headrest Rearward Switch: Signal Stuck High   GO to Pinpoint Test G
B14CB:11 Seat Height Rear Position Feedback: Circuit Short To Ground   GO to Pinpoint Test H
B14CB:12 Seat Height Rear Position Feedback: Circuit Short To Battery   GO to Pinpoint Test H
B14CD:11 Seat Head Restraint Forward/Rearward Position Feedback: Circuit Short To Ground   GO to Pinpoint Test H
B14CD:12 Seat Head Restraint Forward/Rearward Position Feedback: Circuit Short To Battery   GO to Pinpoint Test H
B14CE:09 Seat Horizontal Motor Output: Component Failure
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CE:31 Seat Horizontal Motor Output: No Signal   GO to Pinpoint Test H
B14CF:09 Seat Recline Motor Output: Component Failure
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14CF:31 Seat Recline Motor Output: No Signal   GO to Pinpoint Test H
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D0:31 Seat Height Front/Tilt Motor Output: No Signal   GO to Pinpoint Test H
B14D1:09 Seat Head Restraint Forward/Rearward Motor Output: Component Failure   GO to Pinpoint Test G
B14D1:11 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Ground   GO to Pinpoint Test G
B14D1:12 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Battery   GO to Pinpoint Test G
B14D1:13 Seat Head Restraint Forward/Rearward Motor Output: Circuit Open   GO to Pinpoint Test G
B14D1:1A Seat Head Restraint Forward/Rearward Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test G
B14D1:31 Seat Head Restraint Forward/Rearward Motor Output: No Signal   GO to Pinpoint Test H
B14D2:09 Seat Height Rear Motor Output: Component Failure
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B14D2:31 Seat Height Rear Motor Output: No Signal   GO to Pinpoint Test H
B151F:09 Left Cushion Motor Output: Component Failure   GO to Pinpoint Test G
B151F:11 Left Cushion Motor Output: Circuit Short To Ground   GO to Pinpoint Test G
B151F:12 Left Cushion Motor Output: Circuit Short To Battery   GO to Pinpoint Test G
B151F:13 Left Cushion Motor Output: Circuit Open   GO to Pinpoint Test G
B151F:1A Left Cushion Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test G
B151F:31 Left Cushion Motor Output: No Signal   GO to Pinpoint Test H
B1523:11 Left Cushion Motor Position Sensor Feedback: Circuit Short To Ground   GO to Pinpoint Test H
B1523:12 Left Cushion Motor Position Sensor Feedback: Circuit Short To Battery   GO to Pinpoint Test H
B1527:24 Left Cushion Fore Switch: Signal Stuck High   GO to Pinpoint Test G
B1527:24 Left Cushion Aft Switch: Signal Stuck High   GO to Pinpoint Test G
B1B89:11 Seat Slide Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test H
B1B89:12 Seat Slide Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test H
B1B91:11 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test H
B1B91:12 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test H
B1B93:11 Seat Recline Motor Speed/Position Sensor: Circuit Short To Ground   GO to Pinpoint Test H
B1B93:12 Seat Recline Motor Speed/Position Sensor: Circuit Short To Battery   GO to Pinpoint Test H
B1B96:24 Seat Slide Forward Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B1B97:24 Seat Slide Backward Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B1B98:24 Seat Tilt Up Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B1B99:24 Seat Tilt Down Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B1C00:24 Seat Recline Up Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
B1C01:24 Seat Recline Down Switch: Signal Stuck High
  • For 10-way seat, GO to Pinpoint Test F
  • For 16-way seat, GO to Pinpoint Test G
U0100:00 Lost Communication with ECM/PCM "A": No Sub Type Information   GO to Pinpoint Test V
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test S
U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information   GO to Pinpoint Test Y
U0253:87 Lost Communication with Accessory Protocol Interface Module: Missing Message   GO to Pinpoint Test AD GO to Pinpoint Test Z
U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information DIAGNOSE any other related DSM Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost. Presence of this DTC alone does not prevent basic seat operation from the seat control switch.

Using a diagnostic scan tool, CARRY OUT PMI on the DSM . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).
U3000:49 Control Module: Internal Electronic Failure INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Chart: HVAC Module

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  HVAC Module DTC Chart


  DTC Description Action
B1034:11 Left Front Seat Heater Element: Circuit Short To Ground   GO to Pinpoint Test K
B1034:15 Left Front Seat Heater Element: Circuit Short To Battery or Open   GO to Pinpoint Test K
B1036:11 Right Front Seat Heater Element: Circuit Short To Ground   GO to Pinpoint Test L
B1036:15 Right Front Seat Heater Element: Circuit Short To Battery or Open   GO to Pinpoint Test L
B1038:11 Left Front Seat Heater Sensor: Circuit Short To Ground   GO to Pinpoint Test K
B1038:15 Left Front Seat Heater Sensor: Circuit Short To Battery or Open   GO to Pinpoint Test K
B103A:11 Right Front Seat Heater Sensor: Circuit Short To Ground   GO to Pinpoint Test L
B103A:15 Right Front Seat Heater Sensor: Circuit Short To Battery or Open   GO to Pinpoint Test L
All other Diagnostic Trouble Codes (DTCs) -   Refer to the appropriate section in Group 412 for the procedure.

DTC Chart: SCMB

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  SCMB DTC Chart


  DTC Description Action
B105F:09 Seat Cushion Extension Motor Output: Component Failure   GO to Pinpoint Test B
B105F:11 Seat Cushion Extension Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B105F:12 Seat Cushion Extension Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B105F:13 Seat Cushion Extension Motor Output: Circuit Open   GO to Pinpoint Test B
B105F:1A Seat Cushion Extension Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B105F:31 Seat Cushion Extension Motor Output: No Signal   GO to Pinpoint Test C
B1060:09 Seat Headrest Motor Output: Component Failure   GO to Pinpoint Test B
B1060:11 Seat Headrest Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B1060:12 Seat Headrest Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B1060:13 Seat Headrest Motor Output: Circuit Open   GO to Pinpoint Test B
B1060:1A Seat Headrest Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B1060:31 Seat Headrest Motor Output: No Signal   GO to Pinpoint Test C
B1065:24 Cushion Extend Switch: Signal Stuck High   GO to Pinpoint Test B
B1066:24 Cushion Retract Switch: Signal Stuck High   GO to Pinpoint Test B
B106D:24 Headrest Up Switch: Signal Stuck High   GO to Pinpoint Test B
B106E:24 Headrest Down Switch: Signal Stuck High   GO to Pinpoint Test B
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High   GO to Pinpoint Test B
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High   GO to Pinpoint Test B
B14C5:24 Seat Headrest Forward Switch: Signal Stuck High   GO to Pinpoint Test B
B14C6:24 Seat Headrest Rearward Switch: Signal Stuck High   GO to Pinpoint Test B
B14CE:09 Seat Horizontal Motor Output: Component Failure   GO to Pinpoint Test B
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test B
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test B
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B14CE:31 Seat Horizontal Motor Output: No Signal   GO to Pinpoint Test C
B14CF:09 Seat Recline Motor Output: Component Failure   GO to Pinpoint Test B
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test B
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test B
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B14CF:31 Seat Recline Motor Output: No Signal   GO to Pinpoint Test C
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure   GO to Pinpoint Test B
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test B
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test B
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B14D0:31 Seat Height Front/Tilt Motor Output: No Signal   GO to Pinpoint Test C
B14D1:09 Seat Head Restraint Forward/Rearward Motor Output: Component Failure   GO to Pinpoint Test B
B14D1:11 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B14D1:12 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B14D1:13 Seat Head Restraint Forward/Rearward Motor Output: Circuit Open   GO to Pinpoint Test B
B14D1:1A Seat Head Restraint Forward/Rearward Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B14D1:31 Seat Head Restraint Forward/Rearward Motor Output: No Signal   GO to Pinpoint Test C
B14D2:09 Seat Height Rear Motor Output: Component Failure   GO to Pinpoint Test B
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground   GO to Pinpoint Test B
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery   GO to Pinpoint Test B
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open   GO to Pinpoint Test B
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open   GO to Pinpoint Test B
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold   GO to Pinpoint Test B
B14D2:31 Seat Height Rear Motor Output: No Signal   GO to Pinpoint Test C
B1B96:24 Seat Slide Forward Switch: Signal Stuck High   GO to Pinpoint Test B
B1B97:24 Seat Slide Backward Switch: Signal Stuck High   GO to Pinpoint Test B
B1B98:24 Seat Tilt Up Switch: Signal Stuck High   GO to Pinpoint Test B
B1B99:24 Seat Tilt Down Switch: Signal Stuck High   GO to Pinpoint Test B
B1C00:24 Seat Recline Up Switch: Signal Stuck High   GO to Pinpoint Test B
B1C01:24 Seat Recline Down Switch: Signal Stuck High   GO to Pinpoint Test B
U0100:00 Lost Communication with ECM/PCM "A": No Sub Type Information   GO to Pinpoint Test V
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test S
U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information DIAGNOSE any other related SCMB Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost. Presence of this DTC alone does not prevent basic seat operation from the seat control switch.

Using a diagnostic scan tool, CARRY OUT PMI on the SCMB . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).
U3000:49 Control Module: Internal Electronic Failure INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Chart: SCME

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  SCME DTC Chart


  DTC Description Action
B1151:4B Passenger Seat Cushion: Over Temperature   GO to Pinpoint Test O
B1153:4B Driver Seat Cushion: Over Temperature   GO to Pinpoint Test N
B1155:01 Passenger Seat: General Electrical Failure   GO to Pinpoint Test O
B1155:11 Passenger Seat: Circuit Short To Ground   GO to Pinpoint Test O
B1155:12 Passenger Seat: Circuit Short To Battery   GO to Pinpoint Test O
B1155:13 Passenger Seat: Circuit Open   GO to Pinpoint Test O
B1155:1A Passenger Seat: Circuit Resistance Below Threshold   GO to Pinpoint Test O
B1156:01 Driver Seat: General Electrical Failure   GO to Pinpoint Test N
B1156:11 Driver Seat: Circuit Short To Ground   GO to Pinpoint Test N
B1156:12 Driver Seat: Circuit Short To Battery   GO to Pinpoint Test N
B1156:13 Driver Seat: Circuit Open   GO to Pinpoint Test N
B1156:1A Driver Seat: Circuit Resistance Below Threshold   GO to Pinpoint Test N
B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure   GO to Pinpoint Test N
B1208:11 Driver Seat Cushion Temperature Sensor: Circuit Short To Ground   GO to Pinpoint Test N
B1208:15 Driver Seat Cushion Temperature Sensor: Circuit Short To Battery or Open   GO to Pinpoint Test N
B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure   GO to Pinpoint Test O
B120A:11 Passenger Seat Cushion Temperature Sensor: Circuit Short To Ground   GO to Pinpoint Test O
B120A:15 Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery or Open   GO to Pinpoint Test O
B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground   GO to Pinpoint Test Q
B14BE:11 Driver Seat Back Blower: Circuit Short To Ground   GO to Pinpoint Test Q
B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground   GO to Pinpoint Test R
B14C2:11 Passenger Seat Back Blower: Circuit Short To Ground   GO to Pinpoint Test R
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test W
U0257:00 Lost Communication with Front Controls / Display Interface Module: No Sub Type Information   GO to Pinpoint Test X
U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information DIAGNOSE any other related DSM Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost.

Using a diagnostic scan tool, CARRY OUT PMI on the SCME . REPEAT the self-test and VERIFY successful PMI . CLEAR the Diagnostic Trouble Codes (DTCs).
U3000:49 Control Module: Internal Electronic Failure INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).

DTC Chart: SCMG

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  SCMG DTC Chart


  DTC Description Action
B146F:00 Back Bladder System Electropneumatic Failure: No Sub Type Information   GO to Pinpoint Test T
B146F:04 Back Bladder System Electropneumatic Failure: System Internal Failure   GO to Pinpoint Test T
B1470:00 Cushion Bladder System Electropneumatic Failure: No Sub Type Information   GO to Pinpoint Test T
B1470:04 Cushion Bladder System Electropneumatic Failure: System Internal Failure   GO to Pinpoint Test T
B1471:11 Multi-Contour Seat Switch Input: Circuit Short To Ground   GO to Pinpoint Test T
B1471:13 Multi-Contour Seat Switch Input: Circuit Open   GO to Pinpoint Test T
B1471:2A Multi-Contour Seat Switch Input: Signal Stuck In Range VERIFY there is no obstruction that may be causing the multi-contour seat switch to be stuck in a certain position. If OK, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
B1473:11 Pump Driver: Circuit Short To Ground   GO to Pinpoint Test T
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test AA
U0208:00 Lost Communication With "Seat Control Module A": No Sub Type Information   GO to Pinpoint Test AB
U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information   GO to Pinpoint Test AD
U0256:00 Lost Communication with Front Controls Interface Module "A": No Sub Type Information   GO to Pinpoint Test AE
U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information   GO to Pinpoint Test AF
U1000:00 Solid State Driver Protection Activated - Driver Disabled: No Sub Type Information DIAGNOSE any other related SCMG Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost. Presence of this DTC alone does not prevent basic seat operation from the seat control switch.

Using a diagnostic scan tool, CARRY OUT PMI on the SCMG . REPEAT the self-test and VERIFY successful PMI .
U3000:49 Control Module: Internal Electronic Failure INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).

DTC Chart: SCMH

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  SCMH DTC Chart


  DTC Description Action
B146F:00 Back Bladder System Electropneumatic Failure: No Sub Type Information   GO to Pinpoint Test U
B146F:04 Back Bladder System Electropneumatic Failure: System Internal Failure   GO to Pinpoint Test U
B1470:00 Cushion Bladder System Electropneumatic Failure: No Sub Type Information   GO to Pinpoint Test U
B1470:04 Cushion Bladder System Electropneumatic Failure: System Internal Failure   GO to Pinpoint Test U
B1471:11 Multi-Contour Seat Switch Input: Circuit Short To Ground   GO to Pinpoint Test U
B1471:13 Multi-Contour Seat Switch Input: Circuit Open   GO to Pinpoint Test U
B1471:2A Multi-Contour Seat Switch Input: Signal Stuck In Range VERIFY there is no obstruction that may be causing the multi-contour seat switch to be stuck in a certain position. If OK, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
B1473:11 Pump Driver: Circuit Short To Ground   GO to Pinpoint Test U
U0140:00 Lost Communication with Body Control Module: No Sub Type Information   GO to Pinpoint Test AA
U0208:00 Lost Communication With "Seat Control Module A": No Sub Type Information   GO to Pinpoint Test AB
U024B:00 Lost Communication with Seat Control Module "G": No Sub Type Information   GO to Pinpoint Test AC
U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information   GO to Pinpoint Test AD
U0256:00 Lost Communication with Front Controls Interface Module "A": No Sub Type Information   GO to Pinpoint Test AE
U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information   GO to Pinpoint Test AF
U0455:00 Invalid Data Received From Restraints Occupant Classification System Module: No Sub Type Information   GO to Pinpoint Test AG
U1000:00 Solid State Driver Protection Activated - Driver Disabled: No Sub Type Information DIAGNOSE any other related SCMH Diagnostic Trouble Codes (DTCs) first. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
U2100:00 Initial Configuration Not Complete: No Sub Type Information

NOTE: This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost. Presence of this DTC alone does not prevent basic seat operation from the seat control switch.

Using a diagnostic scan tool, CARRY OUT PMI on the SCMH . REPEAT the self-test and VERIFY successful PMI .
U3000:49 Control Module: Internal Electronic Failure INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).

Symptom Chart(s)

Symptom Chart: Front Seats

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Possible Sources Actions
No communication with the DDM
  • Refer to the Pinpoint Test
No communication with the DSM
  • Refer to the Pinpoint Test
No communication with the HVAC module
  • Refer to the Pinpoint Test
No communication with the SCMB
  • Refer to the Pinpoint Test
No communication with the SCME
  • Refer to the Pinpoint Test
No communication with the SCMG
  • Refer to the Pinpoint Test
No communication with the SCMH
  • Refer to the Pinpoint Test
The power seat is inoperative or does not operate correctly — passenger, 10-way
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A
The power seat is inoperative or does not operate correctly — passenger, 16-way
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test B
The power lumbar is inoperative — driver, 10-way
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test D
The power lumbar is inoperative — passenger, 10-way
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test E
An individual multi-contour seat function is inoperative from the seat control switch — touchscreen control operates correctly
  • Seat control switch
  • Using a diagnostic scan tool, CARRY OUT self-test on the SCMG or SCMH . If any seat control switch related Diagnostic Trouble Codes (DTCs) are present, REFER to the SCMG or SCMH DTC Chart. If no seat control switch related Diagnostic Trouble Codes (DTCs) are present, INSTALL a new seat control switch.
    REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
The multi-contour seat feature is inoperative/does not operate correctly — driver
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test T
The multi-contour seat feature is inoperative/does not operate correctly — passenger
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test U
The memory seat does not operate horizontally/vertically/recline using the seat control switch — 10-way
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test F
The memory seat does not operate horizontally/vertically/recline using the seat control switch — 16-way
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test G
The memory seat does not operate using the memory SET switch
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test H
The memory seat moves in two-second intervals
  • Refer to the Pinpoint Test
  • CARRY OUT the DSM self-test and RETRIEVE the Diagnostic Trouble Codes (DTCs). REFER to the DSM DTC Chart.
The memory seat does not move to the correct memory position
  • Refer to the Pinpoint Test
  • CARRY OUT the DSM self-test and RETRIEVE the Diagnostic Trouble Codes (DTCs). REFER to the DSM DTC Chart.
The memory seat does not operate when using the RKE transmitter
  • Refer to the Pinpoint Test
  • VERIFY the RKE transmitter is operating correctly and is associated to a memory position. REFER to the Owner's Literature for information on associating a RKE transmitter. CARRY OUT the DSM self-test and REFER to the DSM DTC Chart to diagnose any Diagnostic Trouble Codes (DTCs) retrieved.
Easy entry/easy exit is inoperative/does not operate correctly
  • Easy entry/exit feature is not enabled
  • Refer to the Pinpoint Test
  • VERIFY the easy entry/exit feature is enabled in the message center. REFER to the Owner's Literature for information on programming vehicle settings in the message center. If the easy entry/exit feature is enabled but still does not operate correctly, GO to Pinpoint Test I
Both heated seats are inoperative — without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test J
The driver heated seat is inoperative/does not operate correctly — without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test K
The passenger heated seat is inoperative/does not operate correctly — without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test L
Both heated seats are inoperative — with heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test M
The left heated seat is inoperative/does not operate correctly — with heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test N
The right heated seat is inoperative/does not operate correctly — with heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test O
Both ventilated seats are inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test P
The driver ventilated seat is inoperative/does not operate correctly
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test Q
The passenger ventilated seat is inoperative/does not operate correctly
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test R

Pinpoint Test(s)

The Power Seat is Inoperative or Does Not Operate Correctly — Passenger, 10-way


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 70 (30A) is OK.

PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY — PASSENGER, 10-WAY
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
A1 CHECK THE SEAT OPERATION
  • Attempt to operate the seat in all directions.

Is the seat inoperative in all directions?
Yes GO to A2
No If only the recliner motor is inoperative, GO to A4
If only the horizontal motor is inoperative, GO to A6
If only the front height motor is inoperative, GO to A8
If only the rear height motor is inoperative, GO to A10

A2 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Control Switch C330.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-11   Ground

Is the voltage greater than 11 volts?
Yes GO to A3
No VERIFY BJB fuse 70 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to A12

A3 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-10   Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the circuit. GO to A12

A4 CHECK FOR VOLTAGE TO THE SEAT RECLINER MOTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the recline switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-1   C3189-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger front seat backrest frame. GO to A12
No GO to A5

A5 CHECK THE SEAT RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C330.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-1   C3189-3
      C330-3   C3189-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the affected circuit. GO to A12

A6 CHECK FOR VOLTAGE TO THE SEAT HORIZONTAL MOTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the horizontal switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-1   C332-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A7

A7 CHECK THE SEAT HORIZONTAL MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C330.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-17   C332-3
      C330-16   C332-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the affected circuit. GO to A12

A8 CHECK FOR VOLTAGE TO THE SEAT FRONT HEIGHT MOTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Front Height Motor C3074.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the front height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-1   C3074-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A9

A9 CHECK THE SEAT FRONT HEIGHT MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C330.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-15   C3074-3
      C330-14   C3074-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the affected circuit. GO to A12

A10 CHECK FOR VOLTAGE TO THE SEAT REAR HEIGHT MOTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Rear Height Motor C3075.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the rear height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3075-1   C3075-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to A12
No GO to A11

A11 CHECK THE SEAT REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C330.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-18   C3075-3
      C330-19   C3075-1

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).
GO to A12
No REPAIR the affected circuit. GO to A12

A12 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Power Seat is Inoperative or Does Not Operate Correctly — Passenger, 16-way


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B105F:09 Seat Cushion Extension Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B105F:11 Seat Cushion Extension Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B105F:12 Seat Cushion Extension Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B105F:13 Seat Cushion Extension Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B105F:1A Seat Cushion Extension Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1060:09 Seat Headrest Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1060:11 Seat Headrest Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1060:12 Seat Headrest Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1060:13 Seat Headrest Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1060:1A Seat Headrest Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1065:24 Cushion Extend Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B1066:24 Cushion Retract Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B106D:24 Headrest Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B106E:24 Headrest Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B14C5:24 Seat Headrest Forward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B14C6:24 Seat Headrest Rearward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the SCMB sets this DTC .
B14CE:09 Seat Horizontal Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CF:09 Seat Recline Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D1:09 Seat Head Restraint Forward/Rearward Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D1:11 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D1:12 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D1:13 Seat Head Restraint Forward/Rearward Motor Output: Circuit Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D1:1A Seat Head Restraint Forward/Rearward Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D2:09 Seat Height Rear Motor Output: Component Failure If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold If the current sensed by the SCMB is within a specified range, the DTC is set and the output is disabled.
B1B96:24 Seat Slide Forward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the SCMB sets this DTC .
B1B97:24 Seat Slide Backward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the SCMB sets this DTC .
B1B98:24 Seat Tilt Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the SCMB sets this DTC .
B1B99:24 Seat Tilt Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the SCMB sets this DTC .
B1C00:24 Seat Recline Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the SCMB sets this DTC .
B1C01:24 Seat Recline Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the SCMB sets this DTC .

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest
  • Seat headrest assembly
  • SCMB

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 70 (30A) is OK.

PINPOINT TEST B: THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY — PASSENGER, 16-WAY
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
B1 RETRIEVE THE SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform SCMB self-test. If the diagnostic scan tool does not communicate with the SCMB ,

Are any SCMB Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1065:24, B1066:24, B106D:24, B106E:24, B14C3:24, B14C4:24, B14C5:24, B14C6:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation). For DTC B105F:31, B1060:31, B14CE:31, B14CF:31, B14D0:31, B14D1:31 or B14D2:31, GO to Pinpoint Test C
For DTC B105F:XX, GO to B34
For DTC B1060:XX, GO to B40
For DTC B14CE:XX, GO to B22
For DTC B14CF:XX, GO to B28
For DTC B14D0:XX, GO to B10
For DTC B14D1:XX, GO to B46
For DTC B14D2:XX, GO to B16
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart.
No If the seat only operates for short one-second intervals each time the switch is activated (jog mode), GO to Pinpoint Test C
If the seat is inoperative in one or more directions, GO to B2

B2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch in all positions, monitor the following SCMB seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
    • Front Tilt Switch (Down) (FTLT_SW_DN)
    • Front Tilt Switch (Up) (FTLT_SW_UP)
    • Recline Switch (Down) (REC_SW_DWN)
    • Recline Switch (Up) (REC_SW_UP)
    • Rear Tilt Switch (Down) (RTLT_SW_DN)
    • Rear Tilt Switch (Up) (RTLT_SW_UP)
    • Slide Switch (Backward) (SLIDE_SW_B)
    • Slide Switch (Forward) (SLIDE_SW_F)
    • Cushion Switch (Extend) (CSH_SW_EXT)
    • Cushion Switch (Retract) (CSH_SW_RT)
    • Headrest Switch (Backward) (HDRST_SW_B)
    • Headrest Switch (Forward) (HDRST_SW_F)
    • Headrest Switch (Down) (HDRST_SW_DN)
    • Headrest Switch (Up) (HDRST_SW_UP)

Do the PID states agree with all of the switch positions?
Yes GO to B8
No If none of the PID states changed when operating the seat control switch, GO to B3
If the PID states changed correctly for at least one switch position, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

B3 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Control Switch C3388.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-1   Ground

Is the voltage greater than 11 volts?
Yes GO to B4
No REPAIR the circuit. GO to B53

B4 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-6   Ground

Is the resistance less than 3 ohms?
Yes GO to B5
No REPAIR the circuit. GO to B53

B5 CHECK THE SEAT CONTROL SWITCH LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: SCMB C3696F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-4   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to B53
No GO to B6

B6 CHECK THE SEAT CONTROL SWITCH LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B7
No REPAIR the circuit. GO to B53

B7 CHECK THE SEAT CONTROL SWITCH LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-4   C3696F-16

Is the resistance less than 3 ohms?
Yes INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to B52 Otherwise, GO to B53
No REPAIR the circuit. GO to B53

B8 CHECK FOR VOLTAGE TO THE SCMB (PASSENGER FRONT SEAT MODULE)

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696B-3   Ground
      C3696B-6   Ground

Are the voltages greater than 11 volts?
Yes GO to B9
No REPAIR the circuit. GO to B53

B9 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) GROUND CIRCUITS FOR AN OPEN
  • Disconnect: SCMB C3696C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696C-3   Ground
      C3696C-6   Ground

Are the resistances less than 3 ohms?
Yes GO to B52
No REPAIR the affected circuit. GO to B53

B10 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-1   Ground
      C3696F-2   Ground

Is any voltage present?
Yes GO to B11
No GO to B12

B11 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Front Height Motor C3074.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-1   Ground
      C3696F-2   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53

B12 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-1   Ground
      C3696F-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B14
No GO to B13

B13 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Front Height Motor C3074.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-1   Ground
      C3696F-2   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53
No REPAIR the affected circuit. GO to B53

B14 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Front Height Motor C3074.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-1   C3074-3
      C3696F-2   C3074-1

Are the resistances less than 3 ohms?
Yes GO to B15
No REPAIR the affected circuit. GO to B53

B15 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE FRONT HEIGHT MOTOR
  • Connect: SCMB C3696A and C3696F.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the front height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-1   C3074-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53
No GO to B52

B16 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696C-1   Ground
      C3696C-2   Ground

Is any voltage present?
Yes GO to B17
No GO to B18

B17 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Rear Height Motor C3075.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696C-1   Ground
      C3696C-2   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53

B18 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696C-1   Ground
      C3696C-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B20
No GO to B19

B19 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Rear Height Motor C3075.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696C-1   Ground
      C3696C-2   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53
No REPAIR the affected circuit. GO to B53

B20 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Rear Height Motor C3075.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696C-1   C3075-1
      C3696C-2   C3075-3

Are the resistances less than 3 ohms?
Yes GO to B21
No REPAIR the affected circuit. GO to B53

B21 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE REAR HEIGHT MOTOR
  • Connect: SCMB C3696A and C3696C.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the rear height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3075-1   C3075-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53
No GO to B52

B22 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-5   Ground
      C3696F-6   Ground

Is any voltage present?
Yes GO to B23
No GO to B24

B23 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-5   Ground
      C3696F-6   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to B53

B24 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-5   Ground
      C3696F-6   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B26
No GO to B25

B25 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-5   Ground
      C3696F-6   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to B53
No REPAIR the affected circuit. GO to B53

B26 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-5   C332-1
      C3696F-6   C332-3

Are the resistances less than 3 ohms?
Yes GO to B27
No REPAIR the affected circuit. GO to B53

B27 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE HORIZONTAL MOTOR
  • Connect: SCMB C3696A and C3696F.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the horizontal switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-1   C332-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to B53
No GO to B52

B28 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696B-1   Ground
      C3696B-4   Ground

Is any voltage present?
Yes GO to B29
No GO to B30

B29 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Front Recliner Motor C3189.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696B-1   Ground
      C3696B-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat backrest frame. GO to B53

B30 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696B-1   Ground
      C3696B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B32
No GO to B31

B31 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696B-1   Ground
      C3696B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat backrest frame. GO to B53
No REPAIR the affected circuit. GO to B53

B32 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696B-1   C3189-1
      C3696B-4   C3189-3

Are the resistances less than 3 ohms?
Yes GO to B33
No REPAIR the affected circuit. GO to B53

B33 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE RECLINER MOTOR
  • Connect: SCMB C3696A and C3696B.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the recline switch forward and backward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-1   C3189-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat backrest frame. GO to B53
No GO to B52

B34 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-14   Ground
      C3696F-15   Ground

Is any voltage present?
Yes GO to B35
No GO to B36

B35 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Cushion Extension Motor C3695.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-14   Ground
      C3696F-15   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53

B36 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-14   Ground
      C3696F-15   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B38
No GO to B37

B37 CHECK THE CUSION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Cushion Extension Motor C3695.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-14   Ground
      C3696F-15   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53
No REPAIR the affected circuit. GO to B53

B38 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Cushion Extension Motor C3695.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-14   C3695-3
      C3696F-15   C3695-1

Are the resistances less than 3 ohms?
Yes GO to B39
No REPAIR the affected circuit. GO to B53

B39 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE CUSHION EXTENSION MOTOR
  • Connect: SCMB C3696A and C3696F.
  • Ignition ON.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the cushion extension switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3695-1   C3695-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to B53
No GO to B52

B40 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-3   Ground
      C3696F-4   Ground

Is any voltage present?
Yes GO to B41
No GO to B42

B41 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Headrest Up/Down Motor C3693.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-3   Ground
      C3696F-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B53

B42 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-3   Ground
      C3696F-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B44
No GO to B43

B43 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Seat Headrest Up/Down Motor C3693.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-3   Ground
      C3696F-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B53
No REPAIR the affected circuit. GO to B53

B44 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Headrest Up/Down Motor C3693.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696F-3   C3693-1
      C3696F-4   C3693-4

Are the resistances less than 3 ohms?
Yes GO to B45
No REPAIR the affected circuit. GO to B53

B45 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE SEAT HEADREST MOTOR
  • Connect: SCMB C3696A and C3696F.
  • Ignition ON.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the headrest motor switch up and down, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3693-1   C3693-4

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B53
No GO to B52

B46 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696D-7   Ground
      C3696D-8   Ground

Is any voltage present?
Yes GO to B47
No GO to B48

B47 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Head Restraint Forward/Rearward Motor C3702.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696D-7   Ground
      C3696D-8   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to B53
No INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B53

B48 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696D-7   Ground
      C3696D-8   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B50
No GO to B49

B49 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Passenger Head Restraint Forward/Rearward Motor C3702.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696D-7   Ground
      C3696D-8   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B53
No REPAIR the affected circuit. GO to B53

B50 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Head Restraint Forward/Rearward Motor C3702.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3696D-7   C3702-4
      C3696D-8   C3702-1

Are the resistances less than 3 ohms?
Yes GO to B51
No REPAIR the affected circuit. GO to B53

B51 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE HEAD RESTRAINT FORWARD/REARWARD MOTOR
  • Connect: SCMB C3696A and C3696D.
  • Ignition ON.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the headrest motor switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3702-1   C3702-4

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to B53
No GO to B52

B52 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C339 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to B53
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to B53

B53 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


DTC B105F:31, B1060:31, B14CE:31, B14CF:31, B14D0:31, B14D1:31 or B14D2:31


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  SCMB DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B105F:31 Seat Cushion Extension Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.
B1060:31 Seat Headrest Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.
B14CE:31 Seat Horizontal Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.
B14CF:31 Seat Recline Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.
B14D0:31 Seat Height Front/Tilt Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.
B14D1:31 Seat Head Restraint Forward/Rearward Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.
B14D2:31 Seat Height Rear Motor Output: No Signal During self-test, the SCMB attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The SCMB retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the SCMB disables the output.

Possible Causes

  • Wiring, terminals or connectors
  • Horizontal motor
  • Seat track
  • Seat backrest
  • Seat headrest assembly
  • SCMB

PINPOINT TEST C: DTC (DIAGNOSTIC TROUBLE CODE) B105F:31, B1060:31, B14CE:31, B14CF:31, B14D0:31, B14D1:31 OR B14D2:31
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
C1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Attempt to operate the seat in all directions.
  • Using a diagnostic scan tool, perform self-test on the SCMB . If the diagnostic scan tool does not communicate to the SCMB (Front Passenger Seat Control Module,

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B14D0:31, GO to C2
For DTC B14D2:31, GO to C5
For DTC B14CE:31, GO to C8
For DTC B14CF:31, GO to C11
For DTC B105F:31, GO to C14
For DTC B1060:31, GO to C17
For DTC B14D1:31, GO to C20
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMB DTC Chart in this section.
No If the front height motor only operates for short one-second intervals each time the switch is activated, GO to C2
If the rear height motor only operates for short one-second intervals each time the switch is activated, GO to C5
If the horizontal motor only operates for short one-second intervals each time the switch is activated, GO to C8
If the recliner motor only operates for short one-second intervals each time the switch is activated, GO to C11
If the cushion extension motor only operates for short one-second intervals each time the switch is activated, GO to C14
If the seat headrest motor only operates for short one-second intervals each time the switch is activated, GO to C17
If the seat head restraint forward/rearward motor only operates for short one-second intervals each time the switch is activated, GO to C20

C2 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Front Height Motor C3074.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-2   Ground
      C3074-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to C24
No GO to C3

C3 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-2   Ground
      C3074-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C4
No REPAIR the affected circuit. GO to C24

C4 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-2   C3696F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3074-4   C3696A-19

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C5 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Rear Height Motor C3075.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3075-2   Ground
      C3075-4   Ground

Is any voltage present on any circuits?
Yes REPAIR the affected circuit. GO to C24
No GO to C6

C6 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3075-2   Ground
      C3075-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C7
No REPAIR the affected circuit. GO to C24

C7 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3075-2   C3696A-18
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3075-4   C3696F-9

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C8 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Horizontal Motor C332.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-2   Ground
      C332-4   Ground

Is any voltage present on any circuits?
Yes REPAIR the affected circuit. GO to C24
No GO to C9

C9 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-2   Ground
      C332-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C10
No REPAIR the affected circuit. GO to C24

C10 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-2   C3696F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C332-4   C3696A-20

Are the resistances less than 3 ohms?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C11 CHECK THE RECLINER SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Recliner Motor C3189.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-2   Ground
      C3189-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to C24
No GO to C12

C12 CHECK THE RECLINER SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-2   Ground
      C3189-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C13
No REPAIR the affected circuit. GO to C24

C13 CHECK THE RECLINER SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-2   C3696A-17
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3189-4   C3696F-9

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat backrest frame. If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C14 CHECK THE CUSHION EXTENSION MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Cushion Extension Motor C3695.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3695-2   Ground
      C3695-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to C24
No GO to C15

C15 CHECK THE CUSHION EXTENSION MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3695-2   Ground
      C3695-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C16
No REPAIR the affected circuit. GO to C24

C16 CHECK THE CUSHION EXTENSION MOTOR SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3695-2   C3696F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3695-4   C3696A-16

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C17 CHECK THE SEAT HEADREST MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Headrest Up/Down Motor C3693.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3693-2   Ground
      C3693-3   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to C24
No GO to C18

C18 CHECK THE SEAT HEADREST MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3693-2   Ground
      C3693-3   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C19
No REPAIR the affected circuit. GO to C24

C19 CHECK THE SEAT HEADREST MOTOR SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3693-3   C3696F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3693-2   C3696A-15

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C20 CHECK THE SEAT HEAD RESTRAINT FORWARD/REARWARD (TILT) MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: SCMB C3696A and C3696F.
  • Disconnect: Passenger Seat Head Restraint Forward/Rearward Motor C3702.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3702-2   Ground
      C3702-3   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to C24
No GO to C21

C21 CHECK THE SEAT HEAD RESTRAINT FORWARD/REARWARD (TILT) MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3702-2   Ground
      C3702-3   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to C22
No REPAIR the affected circuit. GO to C24

C22 CHECK THE SEAT HEAD RESTRAINT FORWARD/REARWARD (TILT) MOTOR SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3702-3   C3696F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3702-2   C3696A-14

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to C23 Otherwise, GO to C24
No REPAIR the affected circuit. GO to C24

C23 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMB connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C339 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to C24
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to C24

C24 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Power Lumbar is Inoperative — Driver, 10-Way


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly

PINPOINT TEST D: THE POWER LUMBAR IS INOPERATIVE — DRIVER, 10-WAY
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
D1 CHECK FOR VOLTAGE TO THE SEAT LUMBAR MOTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: Driver Seat Lumbar Motor C3215.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the lumbar switch in both directions, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3215-A   C3215-B

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to D3
No GO to D2

D2 CHECK THE SEAT LUMBAR MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Control Switch C369.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C369-2   C3215-B
      C369-6   C3215-A

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to D3
No REPAIR the affected circuit. GO to D3

D3 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Power Lumbar is Inoperative — Passenger, 10-Way


Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly

PINPOINT TEST E: THE POWER LUMBAR IS INOPERATIVE — PASSENGER, 10-WAY
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
E1 CHECK FOR VOLTAGE TO THE SEAT LUMBAR MOTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Lumbar Motor C3216.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the lumbar switch in both directions, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3216-A   C3216-B

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new passenger seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly (501-10A Front Seats, Removal and Installation).
GO to E3
No GO to E2

E2 CHECK THE SEAT LUMBAR MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Passenger Seat Control Switch C330.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C330-20   C3216-B
      C330-2   C3216-A

Are the resistances less than 3 ohms?
Yes INSTALL a new passenger seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to E3
No REPAIR the affected circuit. GO to E3

E3 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Memory Seat Does Not Operate Horizontally/Vertically/Recline Using the Seat Control Switch — 10-Way


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14CE:09 Seat Horizontal Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:09 Seat Recline Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:09 Seat Height Rear Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1B96:24 Seat Slide Forward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1B97:24 Seat Slide Backward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1B98:24 Seat Tilt Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1B99:24 Seat Tilt Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1C00:24 Seat Recline Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1C01:24 Seat Recline Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest
  • DSM

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 77 (30A) is OK.

PINPOINT TEST F: THE MEMORY SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH — 10-WAY
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
F1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B14C3:24, B14C4:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, GO to F3
For DTC B14CE:31, B14CF:31, B14D0:31 or B14D2:31, GO to Pinpoint Test H
For DTC B14CE:XX, B14CF:XX, B14D0:XX or B14D2:XX, GO to F9
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart.
No GO to F2

F2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch in all positions, monitor the following DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
    • Front Tilt Switch (Down) (FTLT_SW_DN)
    • Front Tilt Switch (Up) (FTLT_SW_UP)
    • Recline Switch (Down) (REC_SW_DWN)
    • Recline Switch (Up) (REC_SW_UP)
    • Rear Tilt Switch (Down) (RTLT_SW_DN)
    • Rear Tilt Switch (Up) (RTLT_SW_UP)
    • Slide Switch (Backward) (SLIDE_SW_B)
    • Slide Switch (Forward) (SLIDE_SW_F)

Do the PID states agree with the switch positions?
Yes GO to F9
No GO to F3

F3 CHECK THE SEAT CONTROL SWITCH
  • Ignition OFF.
  • Disconnect: Driver Seat Control Switch C369.
  • Carry out the component test on the seat control switch.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Did the seat control switch pass the component test?
Yes GO to F4
No INSTALL a new seat control switch.
REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation).

F4 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C369-10   Ground

Is the voltage greater than 11 volts?
Yes GO to F5
No REPAIR the circuit. GO to F37

F5 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C369-11   Ground

Is the resistance less than 3 ohms?
Yes GO to F6
No REPAIR the circuit. GO to F37

F6 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE) FOR A SHORT TO VOLTAGE
  • Disconnect: DSM C341A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C369-17   Ground
      C369-16   Ground
      C369-13   Ground
      C369-12   Ground
      C369-14   Ground
      C369-15   Ground
      C369-9   Ground
      C369-7   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No GO to F7

F7 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE) FOR A SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C369-17   Ground
      C369-16   Ground
      C369-13   Ground
      C369-12   Ground
      C369-14   Ground
      C369-15   Ground
      C369-9   Ground
      C369-7   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F8
No REPAIR the affected circuit. GO to F37

F8 CHECK THE CIRCUITS BETWEEN THE SEAT CONTROL SWITCH AND DSM (DRIVER FRONT SEAT MODULE) FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C369-17   C341A-7
      C369-16   C341A-8
      C369-13   C341A-5
      C369-12   C341A-6
      C369-14   C341A-9
      C369-15   C341A-10
      C369-9   C341A-4
      C369-7   C341A-3

Are the resistances greater than 10,000 ohms?
Yes GO to F36
No REPAIR the affected circuit. GO to F37

F9 CHECK THE SEAT TRACK OPERATION USING DSM (DRIVER FRONT SEAT MODULE) ACTIVE COMMANDS AND PARAMETER IDENTIFICATIONS (PIDS)
  • Toggle the following DSM active commands ON and OFF using a diagnostic scan tool while monitoring the seat movement:
    • Front Motor Up (FRONT_UP)
    • Front Motor Down (FRONT_DWN)
    • Seat Height Motor Up (H_MOT_U)
    • Seat Height Motor Down (H_MOT_D)
    • Horizontal Motor Forward (HORZ_FWD)
    • Horizontal Motor Backward (HORZ_BWD)
    • Recline Motor Backward (RECL_BWD)
    • Recline Motor Forward (RECL_FWD)

Does the driver seat operate correctly?
Yes The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.
No If no seat movement occurs, GO to F10
If no front vertical seat movement occurs, GO to F12
If no rear vertical seat movement occurs, GO to F18
If no horizontal seat movement occurs, GO to F24
If no recline seat movement occurs, GO to F30

F10 CHECK FOR VOLTAGE TO THE DSM (DRIVER FRONT SEAT MODULE)

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-3   Ground
      C341B-6   Ground

Are the voltages greater than 11 volts?
Yes GO to F11
No REPAIR the circuit. GO to F37

F11 CHECK THE DSM (DRIVER FRONT SEAT MODULE) GROUND CIRCUITS FOR AN OPEN
  • Disconnect: DSM C341C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-3   Ground
      C341C-6   Ground

Are the resistances less than 3 ohms?
Yes GO to F36
No REPAIR the affected circuit. GO to F37

F12 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Is any voltage present?
Yes GO to F13
No GO to F14

F13 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Height Motor C382.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37

F14 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F16
No GO to F15

F15 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F16 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   C382-1
      C341F-2   C382-3

Are the resistances less than 3 ohms?
Yes GO to F17
No REPAIR the affected circuit. GO to F37

F17 CHECK THE FRONT HEIGHT MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Front Motor Up (FRONT_UP)
    • Front Motor Down (FRONT_DWN)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands FRONT_UP and FRONT_DOWN ON and OFF and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-1   C382-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F18 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Is any voltage present?
Yes GO to F19
No GO to F20

F19 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37

F20 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F22
No GO to F21

F21 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F22 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   C363-1
      C341C-2   C363-3

Are the resistances less than 3 ohms?
Yes GO to F23
No REPAIR the affected circuit. GO to F37

F23 CHECK THE REAR HEIGHT MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: DSM C341A and C341C.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Seat Height Motor Up (H_MOT_U)
    • Seat Height Motor Down (H_MOT_D)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands H_MOT_U and H_MOT_D ON and OFF and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-1   C363-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F24 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Is any voltage present?
Yes GO to F25
No GO to F26

F25 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F37

F26 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F28
No GO to F27

F27 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F37
No REPAIR the affected circuit. GO to F37

F28 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   C362-3
      C341F-6   C362-1

Are the resistances less than 3 ohms?
Yes GO to F29
No REPAIR the affected circuit. GO to F37

F29 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Horizontal Motor Forward (HORZ_FWD)
    • Horizontal Motor Backward (HORZ_BWD)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands HORZ_FWD and HORZ_BWD ON and OFF and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-1   C362-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to F37
No GO to F36

F30 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Is any voltage present?
Yes GO to F31
No GO to F32

F31 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Recliner Motor C3187.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to F37
No INSTALL a new driver seat backrest frame. GO to F37

F32 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F34
No GO to F33

F33 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat backrest frame. GO to F37
No REPAIR the affected circuit. GO to F37

F34 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   C3187-1
      C341B-4   C3187-3

Are the resistances less than 3 ohms?
Yes GO to F35
No REPAIR the affected circuit. GO to F37

F35 CHECK THE RECLINER MOTOR FOR CORRECT OPERATION USING ACTIVE COMMANDS
  • Connect: DSM C341A and C341B.
  • Ignition ON.
  • Using a diagnostic scan tool, view the following DSM active command Parameter Identifications (PIDs):
    • Recline Motor Forward (RECL_FWD)
    • Recline Motor Backward (RECL_BWD)
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. Using a diagnostic scan tool, toggle the active commands RECL_FWD and RECL_BWD ON and OFF and measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-1   C3187-3

Is the voltage greater than 11 volts when commanded ON in both directions and 0 volt when commanded OFF?
Yes INSTALL a new driver seat backrest frame. GO to F37
No GO to F36

F36 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to F37
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to F37

F37 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Memory Seat Does Not Operate Horizontally/Vertically/Recline Using the Seat Control Switch — 16-Way


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1060:09 Seat Headrest Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1060:11 Seat Headrest Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1060:12 Seat Headrest Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1060:13 Seat Headrest Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1060:1A Seat Headrest Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1527:24 Left Cushion Fore Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B1528:24 Left Cushion Aft Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B106D:24 Headrest Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B106E:24 Headrest Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14C3:24 Seat Height Rear Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14C4:24 Seat Height Rear Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14C5:24 Seat Headrest Forward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14C6:24 Seat Headrest Rearward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or is active during the self-test, the DSM sets this DTC .
B14CE:09 Seat Horizontal Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:11 Seat Horizontal Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:12 Seat Horizontal Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:14 Seat Horizontal Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:15 Seat Horizontal Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CE:1A Seat Horizontal Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:09 Seat Recline Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:11 Seat Recline Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:12 Seat Recline Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:14 Seat Recline Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:15 Seat Recline Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14CF:1A Seat Recline Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:09 Seat Height Front/Tilt Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:11 Seat Height Front/Tilt Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:12 Seat Height Front/Tilt Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:14 Seat Height Front/Tilt Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:15 Seat Height Front/Tilt Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D0:1A Seat Height Front/Tilt Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D1:09 Seat Head Restraint Forward/Rearward Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D1:11 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D1:12 Seat Head Restraint Forward/Rearward Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D1:13 Seat Head Restraint Forward/Rearward Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D1:1A Seat Head Restraint Forward/Rearward Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:09 Seat Height Rear Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:11 Seat Height Rear Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:12 Seat Height Rear Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:14 Seat Height Rear Motor Output: Circuit Short To Ground or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:15 Seat Height Rear Motor Output: Circuit Short To Battery or Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B14D2:1A Seat Height Rear Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B151F:09 Left Cushion Motor Output: Component Failure If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B151F:11 Left Cushion Motor Output: Circuit Short To Ground If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B151F:12 Left Cushion Motor Output: Circuit Short To Battery If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B151F:13 Left Cushion Motor Output: Circuit Open If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B151F:1A Left Cushion Motor Output: Circuit Resistance Below Threshold If the current sensed by the DSM is within a specified range, the DTC is set and the output is disabled.
B1B96:24 Seat Slide Forward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1B97:24 Seat Slide Backward Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1B98:24 Seat Tilt Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1B99:24 Seat Tilt Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1C00:24 Seat Recline Up Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .
B1C01:24 Seat Recline Down Switch: Signal Stuck High If the seat control switch is active for greater than 2 minutes or was active during the self-test, the DSM sets this DTC .

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • Seat control switch
  • Horizontal motor
  • Seat track
  • Seat backrest
  • Seat headrest assembly
  • DSM

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 2 (7.5A) is OK.

PINPOINT TEST G: THE MEMORY SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY/RECLINE USING THE SEAT CONTROL SWITCH — 16-WAY
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
G1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Attempt to activate the seat control switch in all directions.
  • Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM ,

Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B106D:24, B106E:24, B14C3:24, B14C4:24, B14C5:24, B14C6:24, B1527:24, B1528:24, B1B96:24, B1B97:24, B1B98:24, B1B99:24, B1C00:24 or B1C01:24, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation). For DTC B151F:31, B1060:31, B14CE:31, B14CF:31, B14D0:31, B14D1:31 or B14D2:31, GO to Pinpoint Test H
For DTC B151F:XX, GO to G34
For DTC B1060:XX, GO to G40
For DTC B14CE:XX, GO to G22
For DTC B14CF:XX, GO to G28
For DTC B14D0:XX, GO to G10
For DTC B14D1:XX, GO to G46
For DTC B14D2:XX, GO to G16
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart.
No GO to G2

G2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • While operating the seat control switch in all positions, monitor the following DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
    • Front Tilt Switch (Down) (FTLT_SW_DN)
    • Front Tilt Switch (Up) (FTLT_SW_UP)
    • Recline Switch (Down) (REC_SW_DWN)
    • Recline Switch (Up) (REC_SW_UP)
    • Rear Tilt Switch (Down) (RTLT_SW_DN)
    • Rear Tilt Switch (Up) (RTLT_SW_UP)
    • Slide Switch (Backward) (SLIDE_SW_B)
    • Slide Switch (Forward) (SLIDE_SW_F)
    • Cushion Switch (Extend) (CSH_SW_EXT)
    • Cushion Switch (Retract) (CSH_SW_RT)
    • Headrest Switch (Backward) (HDRST_SW_B)
    • Headrest Switch (Forward) (HDRST_SW_F)
    • Headrest Switch (Down) (HDRST_SW_DN)
    • Headrest Switch (Up) (HDRST_SW_UP)

Do the PID states agree with all of the switch positions?
Yes GO to G8
No If none of the PID states changed when operating the seat control switch, GO to G3
If the PID states changed correctly for at least one switch position, INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

G3 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: Driver Seat Control Switch C3387.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-1   Ground

Is the voltage greater than 11 volts?
Yes GO to G4
No VERIFY BCM fuse 2 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to G53

G4 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-6   Ground

Is the resistance less than 3 ohms?
Yes GO to G5
No REPAIR the circuit. GO to G53

G5 CHECK THE SEAT CONTROL SWITCH LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: DSM C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-4   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to G53
No GO to G6

G6 CHECK THE SEAT CONTROL SWITCH LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G7
No REPAIR the circuit. GO to G53

G7 CHECK THE SEAT CONTROL SWITCH LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-4   C341F-16

Is the resistance less than 3 ohms?
Yes INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
If the concern is still present, GO to G52 Otherwise, GO to G53
No REPAIR the circuit. GO to G53

G8 CHECK FOR VOLTAGE TO THE DSM (DRIVER FRONT SEAT MODULE)

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-3   Ground
      C341B-6   Ground

Are the voltages greater than 11 volts?
Yes GO to G9
No REPAIR the circuit. GO to G53

G9 CHECK THE DSM (DRIVER FRONT SEAT MODULE) GROUND CIRCUITS FOR AN OPEN
  • Disconnect: DSM C341C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-3   Ground
      C341C-6   Ground

Are the resistances less than 3 ohms?
Yes GO to G52
No REPAIR the affected circuit. GO to G53

G10 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Is any voltage present?
Yes GO to G11
No GO to G12

G11 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Height Motor C382.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53

G12 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G14
No GO to G13

G13 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   Ground
      C341F-2   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53
No REPAIR the affected circuit. GO to G53

G14 CHECK THE FRONT HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Front Height Motor C382.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-1   C382-1
      C341F-2   C382-3

Are the resistances less than 3 ohms?
Yes GO to G15
No REPAIR the affected circuit. GO to G53

G15 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE FRONT HEIGHT MOTOR
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the front height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-1   C382-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53
No GO to G52

G16 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Is any voltage present?
Yes GO to G17
No GO to G18

G17 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53

G18 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G20
No GO to G19

G19 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   Ground
      C341C-2   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53
No REPAIR the affected circuit. GO to G53

G20 CHECK THE REAR HEIGHT MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-1   C363-1
      C341C-2   C363-3

Are the resistances less than 3 ohms?
Yes GO to G21
No REPAIR the affected circuit. GO to G53

G21 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE REAR HEIGHT MOTOR
  • Connect: DSM C341A and C341C.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the rear height switch upward and downward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-1   C363-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53
No GO to G52

G22 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Is any voltage present?
Yes GO to G23
No GO to G24

G23 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to G53

G24 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G26
No GO to G25

G25 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   Ground
      C341F-6   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to G53
No REPAIR the affected circuit. GO to G53

G26 CHECK THE HORIZONTAL MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-5   C362-3
      C341F-6   C362-1

Are the resistances less than 3 ohms?
Yes GO to G27
No REPAIR the affected circuit. GO to G53

G27 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE HORIZONTAL MOTOR
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the horizontal switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-1   C362-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to G53
No GO to G52

G28 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Is any voltage present?
Yes GO to G29
No GO to G30

G29 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Front Recliner Motor C3187.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat backrest frame. GO to G53

G30 CHECK THE FRONT RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G32
No GO to G31

G31 CHECK THE RECLINER MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   Ground
      C341B-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat backrest frame. GO to G53
No REPAIR the affected circuit. GO to G53

G32 CHECK THE RECLINER MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-1   C3187-1
      C341B-4   C3187-3

Are the resistances less than 3 ohms?
Yes GO to G33
No REPAIR the affected circuit. GO to G53

G33 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE RECLINER MOTOR
  • Connect: DSM C341A and C341B.
  • Ignition ON.
  • NOTE: During the following step, the voltage being measured changes polarity dependent upon which direction the seat control is activated. While pushing the recline switch forward and backward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-1   C3187-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat backrest frame. GO to G53
No GO to G52

G34 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-14   Ground
      C341F-15   Ground

Is any voltage present?
Yes GO to G35
No GO to G36

G35 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Cushion Extension Motor C3694.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-14   Ground
      C341F-15   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53

G36 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-14   Ground
      C341F-15   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G38
No GO to G37

G37 CHECK THE CUSION EXTENSION MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Cushion Extension Motor C3694.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-14   Ground
      C341F-15   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53
No REPAIR the affected circuit. GO to G53

G38 CHECK THE CUSHION EXTENSION MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Cushion Extension Motor C3694.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-14   C3694-3
      C341F-15   C3694-1

Are the resistances less than 3 ohms?
Yes GO to G39
No REPAIR the affected circuit. GO to G53

G39 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE CUSHION EXTENSION MOTOR
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the cushion extension switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3694-1   C3694-3

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to G53
No GO to G52

G40 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-3   Ground
      C341F-4   Ground

Is any voltage present?
Yes GO to G41
No GO to G42

G41 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Headrest Up/Down Motor C3692.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-3   Ground
      C341F-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to G53

G42 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-3   Ground
      C341F-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G44
No GO to G43

G43 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Seat Headrest Up/Down Motor C3692.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-3   Ground
      C341F-4   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to G53
No REPAIR the affected circuit. GO to G53

G44 CHECK THE SEAT HEADREST MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Seat Headrest Up/Down Motor C3692.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341F-3   C3692-1
      C341F-4   C3692-4

Are the resistances less than 3 ohms?
Yes GO to G45
No REPAIR the affected circuit. GO to G53

G45 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE SEAT HEADREST MOTOR
  • Connect: DSM C341A and C341F.
  • Ignition ON.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the headrest motor switch up and down, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3692-1   C3692-4

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to G53
No GO to G52

G46 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341D.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-8   Ground

Is any voltage present?
Yes GO to G47
No GO to G48

G47 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO VOLTAGE WITH THE MOTOR DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Head Restraint Forward/Rearward Motor C3701.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-8   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to G53
No INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to G53

G48 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-8   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G50
No GO to G49

G49 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR A SHORT TO GROUND WITH THE MOTOR DISCONNECTED
  • Disconnect: Driver Head Restraint Forward/Rearward Motor C3701.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   Ground
      C341D-8   Ground

Are the resistances greater than 10,000 ohms?
Yes INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to G53
No REPAIR the affected circuit. GO to G53

G50 CHECK THE HEAD RESTRAINT FORWARD/REARWARD MOTOR CIRCUITS FOR AN OPEN
  • Disconnect: Driver Head Restraint Forward/Rearward Motor C3701.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341D-7   C3701-4
      C341D-8   C3701-1

Are the resistances less than 3 ohms?
Yes GO to G51
No REPAIR the affected circuit. GO to G53

G51 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OUTPUT VOLTAGE TO THE HEAD RESTRAINT FORWARD/REARWARD MOTOR
  • Connect: DSM C341A and C341D.
  • Ignition ON.
  • NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the headrest motor switch forward and rearward, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3701-1   C3701-4

Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to G53
No GO to G52

G52 CHECK THE DSM (DRIVER FRONT SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to G53
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to G53

G53 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Memory Seat Does Not Operate Using the Memory SET Switch


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DSM DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1060:31 Seat Headrest Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B1168:11 Seat Headrest Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1168:12 Seat Headrest Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CB:11 Seat Height Rear Position Feedback: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CB:12 Seat Height Rear Position Feedback: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CD:11 Seat Head Restraint Forward/Rearward Position Feedback: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CD:12 Seat Head Restraint Forward/Rearward Position Feedback: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B14CE:31 Seat Horizontal Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14CF:31 Seat Recline Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14D0:31 Seat Height Front/Tilt Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14D1:31 Seat Head Restraint Forward/Rearward Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B14D2:31 Seat Height Rear Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B151F:31 Left Cushion Motor Output: No Signal During self-test, the DSM attempts to operate the appropriate seat track motor and uses the motor's position sensor to monitor movement. If no motor movement is sensed, the DTC is set. The DSM retries motor operation on the next activation of the seat control switch. If no movement is detected after 250 milliseconds, the DSM disables the output.
B1523:11 Left Cushion Motor Position Sensor Feedback: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1523:12 Left Cushion Motor Position Sensor Feedback: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B89:11 Seat Slide Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B89:12 Seat Slide Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B91:11 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B91:12 Seat Tilt Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B93:11 Seat Recline Motor Speed/Position Sensor: Circuit Short To Ground If a short to ground condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.
B1B93:12 Seat Recline Motor Speed/Position Sensor: Circuit Short To Battery If a short to voltage condition is present on the affected motor's position sensor (Hall-effect) feedback circuit, the DTC is set. After a DTC is set, a memory recall is not possible but the seat control switch can operate the associated motor in two-second increments.

  DDM DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1C03:23 Memory #1 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1C04:23 Memory #2 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.
B1C05:23 Memory #3 Switch: Signal Stuck Low If a short to ground is sensed on the switch input circuit during the DDM self-test, the DTC is set. If activity is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored.

Possible Causes

  • Wiring, terminals or connectors
  • Memory SET switch
  • Missing ignition status information
  • Horizontal motor
  • Seat track
  • Seat backrest

PINPOINT TEST H: THE MEMORY SEAT DOES NOT OPERATE USING THE MEMORY SET SWITCH
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
H1 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION FINAL STATUS PID (PARAMETER IDENTIFICATION) STATES
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the DSM IGN_FINAL PID while cycling the ignition from ON to OFF and back to ON.

Do the PID states agree?
Yes GO to H2
No To diagnose no power in run,
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

H2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Attempt to operate the memory seat in all directions.
  • Place the memory seat in the middle of each range of travel.
  • Using a diagnostic scan tool, perform self-test on the DSM and DDM . If the diagnostic scan tool does not communicate to the DSM and/or DDM ,

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1C03:23, B1C04:23 or B1C05:23, GO to H4
For DTC B1B91:11, B1B91:12 or B14D0:31, GO to H10
For DTC B14CB:11, B14CB:12 or B14D2:31, GO to H13
For DTC B1B89:11, B1B89:12 or B14CE:31, GO to H16
For DTC B1B93:11, B1B93:12 or B14CF:31, GO to H19
For DTC B1523:11, B1523:12 or B151F:31, GO to H22
For DTC B1168:11, B1168:12 or B1060:31, GO to H25
For DTC B14CD:11, B14CD:12 or B14D1:31, GO to H28
For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM or DDM DTC Chart(s) in this section.
No GO to H3

H3 MONITOR DSM (DRIVER FRONT SEAT MODULE) PARAMETER IDENTIFICATIONS (PIDS) AND CHECK FOR CORRECT MEMORY SET SWITCH INPUTS
  • While activating the memory recall 1, 2 and 3 buttons, monitor the following DSM memory recall switch status Parameter Identifications (PIDs) using a diagnostic scan tool:
    • Set Memory 1 (MEMORY_1).
    • Set Memory 2 (MEMORY_2).
    • Set Memory 3 (MEMORY_3).

Do the PID values agree with the switch button positions?
Yes GO to H9
No GO to H4

H4 CHECK THE MEMORY SET SWITCH
  • Ignition OFF.
  • Disconnect: Driver Door Lock Control Switch C552.
  • While pressing and releasing the indicated memory recall button 1, measure the component side resistance of the driver door lock control switch using the following table:
    Positive Lead Measurement / Action Negative Lead
    C552, pin 5, Component Side C552, pin 6, Component Side
  • While pressing and releasing the indicated memory recall button 2, measure the component side resistance of the driver door lock control switch using the following table:
    Positive Lead Measurement / Action Negative Lead
    C552, pin 4, Component Side C552, pin 6, Component Side
  • While pressing and releasing the indicated memory recall button 3, measure the component side resistance of the driver door lock control switch using the following table:
    Positive Lead Measurement / Action Negative Lead
    C552, pin 3, Component Side C552, pin 6, Component Side

Are the resistances less than 20 ohms with the switch buttons pressed and greater than 10,000 ohms with the switch buttons released?
Yes GO to H5
No INSTALL a new door lock control switch.
REFER to: Front Door Lock Control Switch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).

H5 CHECK THE MEMORY SET SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C552-6   Ground

Is the resistance less than 3 ohms?
Yes GO to H6
No REPAIR the circuit.

H6 CHECK THE MEMORY SET CIRCUITS FOR A SHORT TO VOLTAGE
  • Disconnect: DDM C501B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C552-3   Ground
      C552-4   Ground
      C552-5   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to H7

H7 CHECK THE MEMORY SET SWITCH CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C552-3   Ground
      C552-4   Ground
      C552-5   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to H8
No REPAIR the affected circuit.

H8 CHECK THE MEMORY SET SWITCH CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C552-3   C501B-2
      C552-4   C501B-3
      C552-5   C501B-1

Are the resistances less than 3 ohms?
Yes GO to H31
No REPAIR the affected circuit.

H9 CHECK THE SEAT TRACK OPERATION USING DSM (DRIVER FRONT SEAT MODULE) ACTIVE COMMANDS AND PARAMETER IDENTIFICATIONS (PIDS)
  • Toggle the following DSM active commands ON and OFF using a diagnostic scan tool while monitoring the seat movement:
    • Front Motor Up (FRONT_UP)
    • Front Motor Down (FRONT_DWN)
    • Seat Height Motor Up (H_MOT_U)
    • Seat Height Motor Down (H_MOT_D)
    • Horizontal Motor Forward (HORZ_FWD)
    • Horizontal Motor Backward (HORZ_BWD)
    • Recline Motor Backward (RECL_BWD)
    • Recline Motor Forward (RECL_FWD)

Does the driver seat operate correctly?
Yes The condition is intermittent. CHECK for causes of an intermittent concern, particularly the pins and terminals of electrical connectors that were disconnected. Do not install any new components at this time. Components should only be installed when directed to do so in the pinpoint test. REPAIR any intermittent wiring, terminal or connector concerns found.
No DIAGNOSE the inoperative seat:
If equipped with a 10-way seat, GO to Pinpoint Test F
If equipped with a 16-way seat, GO to Pinpoint Test G

H10 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Front Height Motor C382.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-2   Ground
      C382-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to H32
No GO to H11

H11 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-2   Ground
      C382-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H12
No REPAIR the affected circuit. GO to H32

H12 CHECK THE FRONT HEIGHT SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-2   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C382-4   C341A-19

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to H32
No REPAIR the affected circuit. GO to H32

H13 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Rear Height Motor C363.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-2   Ground
      C363-4   Ground

Is any voltage present on any circuits?
Yes REPAIR the affected circuit. GO to H32
No GO to H14

H14 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-2   Ground
      C363-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H15
No REPAIR the affected circuit. GO to H32

H15 CHECK THE REAR HEIGHT SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-2   C341A-18
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C363-4   C341F-9

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to H32
No REPAIR the affected circuit. GO to H32

H16 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Horizontal Motor C362.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-2   Ground
      C362-4   Ground

Is any voltage present on any circuits?
Yes REPAIR the affected circuit. GO to H32
No GO to H17

H17 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-2   Ground
      C362-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H18
No REPAIR the affected circuit. GO to H32

H18 CHECK THE HORIZONTAL SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-2   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C362-4   C341A-20

Are the resistances less than 3 ohms?
Yes INSTALL a new horizontal motor.
REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation).
GO to H32
No REPAIR the affected circuit. GO to H32

H19 CHECK THE RECLINER SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Recliner Motor C3187.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-2   Ground
      C3187-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to H32
No GO to H20

H20 CHECK THE RECLINER SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-2   Ground
      C3187-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H21
No REPAIR the affected circuit. GO to H32

H21 CHECK THE RECLINER SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-2   C341A-17
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3187-4   C341F-9

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat backrest frame. GO to H32
No REPAIR the affected circuit. GO to H32

H22 CHECK THE CUSHION EXTENSION MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Cushion Extension Motor C3694.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3694-2   Ground
      C3694-4   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to H32
No GO to H23

H23 CHECK THE CUSHION EXTENSION MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3694-2   Ground
      C3694-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H24
No REPAIR the affected circuit. GO to H32

H24 CHECK THE CUSHION EXTENSION MOTOR SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3694-2   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3694-4   C341A-16

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat track.
REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation).
GO to H32
No REPAIR the affected circuit. GO to H32

H25 CHECK THE SEAT HEADREST MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Headrest Up/Down Motor C3692.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3692-2   Ground
      C3692-3   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to H32
No GO to H26

H26 CHECK THE SEAT HEADREST MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3692-2   Ground
      C3692-3   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H27
No REPAIR the affected circuit. GO to H32

H27 CHECK THE SEAT HEADREST MOTOR SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3692-3   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3692-2   C341A-15

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to H32
No REPAIR the affected circuit. GO to H32

H28 CHECK THE SEAT HEAD RESTRAINT FORWARD/REARWARD MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341F.
  • Disconnect: Driver Seat Head Restraint Forward/Rearward Motor C3701.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3701-2   Ground
      C3701-3   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to H32
No GO to H29

H29 CHECK THE SEAT HEAD RESTRAINT FORWARD/REARWARD MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3701-2   Ground
      C3701-3   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H30
No REPAIR the affected circuit. GO to H32

H30 CHECK THE SEAT HEAD RESTRAINT FORWARD/REARWARD MOTOR SENSOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3701-3   C341F-9
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3701-2   C341A-14

Are the resistances less than 3 ohms?
Yes INSTALL a new driver seat head restraint assembly.
REFER to: Front Seat Head Restraint Motor - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to H32
No REPAIR the affected circuit. GO to H32

H31 CHECK THE DDM (DRIVER DOOR MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DDM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DDM connectors. Make sure they seat and latch correctly.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

H32 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


Easy Entry/Easy Exit is Inoperative/Does Not Operate Correctly

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Easy entry/exit feature is not enabled
  • Missing ignition status information
  • DSM

Visual Inspection and Diagnostic Pre-checks

  • Verify the easy entry/exit feature is enabled in the message center. REFER to the Owner's Literature for information on programming vehicle settings in the message center.

PINPOINT TEST I: EASY ENTRY/EASY EXIT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
I1 CHECK THE DRIVER POWER SEAT OPERATION
  • Ignition ON.
  • Check the message center to verify the easy entry/exit feature is turned on.
  • Using the seat control switch, verify the driver power seat operates fully forward and backward.
  • Using a diagnostic scan tool, perform the DSM self-test.

Are any Diagnostic Trouble Codes (DTCs) received?
Yes REFER to the DSM DTC Chart.
No If disabled, ENABLE the easy entry/exit feature through the message center. REFER to the Owner's Literature. TEST the system for normal operation. If OK, INSTRUCT the customer on correct system operation. GO to I2

I2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) IGNITION POSITION FINAL STATUS PID (PARAMETER IDENTIFICATION) STATES
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the DSM IGN_FINAL PID while cycling the ignition from ON to OFF and back to ON.

Does the PID states match with ignition mode?
Yes INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No DIAGNOSE the ignition status concern.
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).


Both Heated Seats Are Inoperative — Without Heated/Ventilated Seats


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • HVAC module

Visual Inspection and Diagnostic Pre-checks

  • Verify the BJB fuse 65 (20A) is OK.

PINPOINT TEST J: BOTH HEATED SEATS ARE INOPERATIVE — WITHOUT HEATED/VENTILATED SEATS
J1 CHECK FOR HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform HVAC module self-test.

Are any HVAC module Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the HVAC Module DTC Chart.
No GO to J2

J2 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: HVAC module C228B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C228B-1   Ground

Is the voltage greater than 11 volts?
Yes GO to J3
No VERIFY BJB fuse 65 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

J3 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the HVAC module connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Driver Heated Seat Is Inoperative/Does Not Operate Correctly — Without Heated/Ventilated Seats


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1034:11 Left Front Seat Heater Element: Circuit Short To Ground Sets when the HVAC module senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1034:15 Left Front Seat Heater Element: Circuit Short To Battery or Open Sets when the HVAC module senses the left front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1038:11 Left Front Seat Heater Sensor: Circuit Short To Ground Sets when the HVAC module senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1038:15 Left Front Seat Heater Sensor: Circuit Short To Battery or Open Sets when the HVAC module senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

Possible Causes

  • Wiring, terminals or connectors
  • Heater mat
  • Touchscreen
  • HVAC module

PINPOINT TEST K: THE DRIVER HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — WITHOUT HEATED/VENTILATED SEATS
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
K1 CHECK FOR HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform HVAC module self-test.

Are any HVAC module Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1034:11 or B1034:15, GO to K4
For DTC B1038:11 or B1038:15, GO to K6
For all other Diagnostic Trouble Codes (DTCs), REFER to the HVAC Module DTC Chart.
No GO to K2

K2 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DRIVER HEATED SEAT CONTROL SWITCH (CC_SW_D_HSEATS) PID (PARAMETER IDENTIFICATION)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the HVAC module CC_SW_D_HSEATS PID while operating the driver heated seat switch.

Does the PID state change when the driver heated seat switch is pressed and released?
Yes GO to K3
No If any other climate control system features are also inoperative from the touchscreen, DIAGNOSE the inoperative climate control system.
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
Otherwise, GO to K14

K3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: HVAC Module C228B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C228B-1   Ground

Is the voltage greater than 11 volts?
Yes GO to K4
No REPAIR the circuit.

K4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: HVAC Module C228B (if not previously disconnected).
  • Disconnect: Left Front Seat Cushion Heater C364.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to K15
No GO to K5

K5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-1   C228B-16

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?
Yes GO to K9
No REPAIR the circuit. GO to K15

K6 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: HVAC Module C228B.
  • Disconnect: Left Front Seat Cushion Heater C364.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-2   C228B-30

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?
Yes GO to K7
No REPAIR the circuit. GO to K15

K7 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect: HVAC Module C228A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-3   C228A-2

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module?
Yes GO to K8
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to K15

K8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to K15
No GO to K13

K9 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Front Seat Backrest Heater C365.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C365-2   Ground

Is the resistance less than 0.5 ohm?
Yes GO to K10
No REPAIR the circuit. GO to K15

K10 CHECK THE CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C364-1, Component Side C364-4, Component Side
    C364-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to K11
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to K15

K11 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C365-1, Component Side C365-2, Component Side
    C365-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to K12
No INSTALL a new driver seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to K15

K12 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C364-4   C365-1

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the backrest heater mat?
Yes GO to K14
No REPAIR the circuit. GO to K15

K13 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C364-2, Component Side C364-3, Component Side
    C364-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to K14
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to K15

K14 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the HVAC module connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
GO to K15
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to K15

K15 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Passenger Heated Seat Is Inoperative/Does Not Operate Correctly — Without Heated/Ventilated Seats


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1036:11 Right Front Seat Heater Element: Circuit Short To Ground Sets when the HVAC module senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B1036:15 Right Front Seat Heater Element: Circuit Short To Battery or Open Sets when the HVAC module senses the right front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B103A:11 Right Front Seat Heater Sensor: Circuit Short To Ground Sets when the HVAC module senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.
B103A:15 Right Front Seat Heater Sensor: Circuit Short To Battery or Open Sets when the HVAC module senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the HVAC module disables the circuit until the ignition is cycled.

Possible Causes

  • Wiring, terminals or connectors
  • Heater mat
  • Touchscreen
  • HVAC module

PINPOINT TEST L: THE PASSENGER HEATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY — WITHOUT HEATED/VENTILATED SEATS
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
L1 CHECK FOR HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform HVAC module self-test.

Are any HVAC module Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1036:11 or B1036:15, GO to L4
For DTC B103A:11 or B103A:15, GO to L6
For all other Diagnostic Trouble Codes (DTCs), REFER to the HVAC Module DTC Chart.
No GO to L2

L2 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE PASSENGER HEATED SEAT CONTROL SWITCH (CC_SW_P_HSEATS) PID (PARAMETER IDENTIFICATION)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the HVAC module CC_SW_P_HSEATS PID while operating the passenger heated seat switch.

Does the PID state change when the passenger heated seat switch is pressed and released?
Yes GO to L3
No If any other climate control system features are also inoperative from the touchscreen, DIAGNOSE the inoperative climate control system.
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
Otherwise, GO to L14

L3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: HVAC Module C228B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C228B-2   Ground

Is the voltage greater than 11 volts?
Yes GO to L4
No REPAIR the circuit.

L4 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: HVAC Module C228B (if not previously disconnected).
  • Disconnect: Right Front Seat Cushion Heater C334.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to L15
No GO to L5

L5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-1   C228B-17

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?
Yes GO to L9
No REPAIR the circuit. GO to L15

L6 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: HVAC Module C228B.
  • Disconnect: Right Front Seat Cushion Heater C334.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2   C228B-15

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?
Yes GO to L7
No REPAIR the circuit. GO to L15

L7 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect: HVAC Module C228A.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-3   C228A-2

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the HVAC module?
Yes GO to L8
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to L15

L8 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to L15
No GO to L13

L9 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Right Front Seat Backrest Heater C335.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C335-2   Ground

Is the resistance less than 0.5 ohm?
Yes GO to L10
No REPAIR the circuit. GO to L15

L10 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C334-1, Component Side C334-4, Component Side
    C334-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to L11
No INSTALL a new passenger seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to L15

L11 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C335-1, Component Side C335-2, Component Side
    C335-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to L12
No INSTALL a new passenger seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to L15

L12 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C334-4   C335-1

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the backrest heater mat?
Yes GO to L14
No REPAIR the circuit. GO to L15

L13 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C334-2, Component Side C334-3, Component Side
    C334-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to L14
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to L15

L14 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the HVAC module connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C339 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes
CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
GO to L15
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to L15

L15 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


Both Heated Seats are Inoperative — With Heated/Ventilated Seats


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, terminals or connectors
  • SCME

Visual Inspection and Diagnostic Pre-checks

  • Verify the BJB fuse 77 (30A) is OK.

PINPOINT TEST M: BOTH HEATED SEATS ARE INOPERATIVE — WITH HEATED/VENTILATED SEATS
M1 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the SCME DTC Chart in this section.
No GO to M2

M2 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM Module C341B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-8   Ground
      C341B-9   Ground

Are the voltages greater than 11 volts?
Yes GO to M3
No VERIFY BJB fuse 77 (30A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to M5

M3 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: DSM Module C341C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-7   Ground
      C341C-8   Ground

Are the resistances less than 3 ohms?
Yes GO to M4
No REPAIR the circuit in question. GO to M5

M4 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCME connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCME connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to M5
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to M5

M5 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Left Heated Seat is Inoperative — With Heated/Ventilated Seats


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1153:4B Driver Seat Cushion: Over Temperature Sets when the SCME senses the left front cushion temperature has exceeded 110°C (230°F) for more than 4 seconds. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:01 Driver Seat: General Electrical Failure Sets when the SCME senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:11 Driver Seat: Circuit Short To Ground Sets when the SCME senses the left front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:12 Driver Seat: Circuit Short To Battery Sets when the SCME senses the left front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:13 Driver Seat: Circuit Open Sets when the SCME senses the left front heater element current draw is less than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1156:1A Driver Seat: Circuit Resistance Below Threshold Sets when the SCME senses the left front heater element current draw is more than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure Sets when the SCME senses the left front heater sensor voltage is out-of-range low or high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1208:11 Driver Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCME senses the left front heater sensor voltage is out-of-range low. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1208:15 Driver Seat Cushion Temperature Sensor: Circuit Short To Battery or Open Sets when the SCME senses the left front heater sensor voltage is out-of-range high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.

Possible Causes

  • Wiring, terminals or connectors
  • Heater mat
  • Touchscreen
  • SCME

PINPOINT TEST N: THE LEFT HEATED SEAT IS INOPERATIVE — WITH HEATED/VENTILATED SEATS
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
N1 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1156:01, B1156:11, B1156:12, B1156:13 or B1156:1A, GO to N5
For DTC B1153:4B, B1208:01, B1208:11 or B1208:15, GO to N7
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCME DTC Chart.
No GO to N2

N2 CHECK THE CLIMATE CONTROL OPERATION FROM THE TOUCHSCREEN
  • Ignition ON.
  • Using the touchscreen, operate the climate control system and verify operation.

Does the climate control system function when controlled by the touchscreen?
Yes GO to N3
No DIAGNOSE the inoperative climate control system.
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).

N3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-8   Ground
      C341B-9   Ground

Are the voltages greater than 11 volts?
Yes GO to N4
No REPAIR the affected circuit. GO to N16

N4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: DSM Module C341C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-7   Ground
      C341C-8   Ground

Are the resistances less than 3 ohms?
Yes GO to N5
No REPAIR the circuit in question. GO to N16

N5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051 (if not previously disconnected).
  • Disconnect: DSM C341A and C341B.
  • Disconnect: Left Front Seat Cushion Heater C3298.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to N16
No GO to N6

N6 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-1   C341B-2

Are the resistances greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the DSM ?
Yes GO to N10
No REPAIR the affected circuit. GO to N16

N7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A and C341B.
  • Disconnect: Left Front Seat Cushion Heater C3298.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-2   C341A-12

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the DSM ?
Yes GO to N8
No REPAIR the circuit. GO to N16

N8 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-3   C341A-9

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the DSM ?
Yes GO to N9
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to N16

N9 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to N16
No GO to N14

N10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Front Seat Backrest Heater C3057.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3057-2   C341B-4

Are the resistances less than 3 ohms?
Yes GO to N11
No REPAIR the circuit in question. GO to N16

N11 CHECK THE CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3298-1, Component Side C3298-4, Component Side
    C3298-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to N12
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to N16

N12 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3057-1, Component Side C3057-2, Component Side
    C3057-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to N13
No INSTALL a new driver seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to N16

N13 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3298-4   C3057-1

Is the resistance greater than 10,000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the backrest heater mat?
Yes GO to N15
No REPAIR the circuit. GO to N16

N14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3298-2, Component Side C3298-3, Component Side
    C3298-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to N15
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to N16

N15 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). GO to N16
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to N16

N16 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Right Heated Seat is Inoperative — With Heated/Ventilated Seats


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B1151:4B Passenger Seat Cushion: Over Temperature Sets when the SCME senses the right front cushion temperature has exceeded 110°C (230°F) for more than 4 seconds. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1155:01 Passenger Seat: General Electrical Failure Sets when the SCME senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1155:11 Passenger Seat: Circuit Short To Ground Sets when the SCME senses the right front heater element current draw has exceeded a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1155:12 Passenger Seat: Circuit Short To Battery Sets when the SCME senses the right front heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1155:13 Passenger Seat: Circuit Open Sets when the SCME senses the right front heater element current draw is less than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B1155:1A Passenger Seat: Circuit Resistance Below Threshold Sets when the SCME senses the right front heater element current draw is more than a specified threshold. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure Sets when the SCME senses the right front heater sensor voltage is out-of-range low or high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B120A:11 Passenger Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCME senses the right front heater sensor voltage is out-of-range low. When this DTC sets, the SCME disables the circuit until the ignition is cycled.
B120A:15 Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery or Open Sets when the SCME senses the right front heater sensor voltage is out-of-range high. When this DTC sets, the SCME disables the circuit until the ignition is cycled.

Possible Causes

  • Wiring, terminals or connectors
  • Heater mat
  • Touchscreen
  • SCME

PINPOINT TEST O: THE RIGHT HEATED SEAT IS INOPERATIVE — WITH HEATED/VENTILATED SEATS
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
O1 CHECK FOR SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCME self-test.

Are any SCME Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1155:01, B1155:11, B1155:12, B1155:13 or B1155:1A, GO to O5
For DTC B1151:4B, B120A:01, B120A:11 or B120A:15, GO to O7
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCME DTC Chart.
No GO to O2

O2 CHECK THE CLIMATE CONTROL OPERATION FROM THE TOUCHSCREEN
  • Ignition ON.
  • Using the touchscreen, operate the climate control system and verify operation.

Does the climate control system function when controlled by the touchscreen?
Yes GO to O3
No DIAGNOSE the inoperative climate control system.
REFER to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).

O3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341B.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341B-8   Ground
      C341B-9   Ground

Are the voltages greater than 11 volts?
Yes GO to O4
No REPAIR the circuit in question. GO to O16

O4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: DSM Module C341C.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341C-7   Ground
      C341C-8   Ground

Are the resistances less than 3 ohms?
Yes GO to O5
No REPAIR the circuit in question. GO to O16

O5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051 (if not previously disconnected).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: DSM C341A and C341B.
  • Disconnect: Right Front Seat Cushion Heater C3302.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-1   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to O16
No GO to O6

O6 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-1   C341B-5

Are the resistances greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the DSM ?
Yes GO to O10
No REPAIR the affected circuit. GO to O16

O7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: DSM C341A and C341B.
  • Disconnect: Right Front Seat Cushion Heater C3302.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-2   C341A-14

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the DSM ?
Yes GO to O8
No REPAIR the circuit. GO to O16

O8 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-3   C341A-10

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the DSM ?
Yes GO to O9
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to O16

O9 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-2   Ground

Is any voltage present?
Yes REPAIR the circuit. GO to O16
No GO to O14

O10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Right Front Seat Backrest Heater C3316.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3316-2   C341B-7

Are the resistances less than 3 ohms?
Yes GO to O11
No REPAIR the affected circuit. GO to O16

O11 CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3302-1, Component Side C3302-4, Component Side
    C3302-1, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 4; and greater than 10,000 ohms between pin 1 and ground?
Yes GO to O12
No INSTALL a new passenger seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to O16

O12 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3316-1, Component Side C3316-2, Component Side
    C3316-2, Component Side Ground

Is the resistance between 0.6 and 2 ohms between pins 1 and 2; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to O13
No INSTALL a new passenger seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to O16

O13 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3302-4   C3316-1

Is the resistance greater than 10,000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the backrest heater mat?
Yes GO to O15
No REPAIR the circuit. GO to O16

O14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
  • Measure the component side resistance between:
    Positive Lead Measurement / Action Negative Lead
    C3302-2, Component Side C3302-3, Component Side
    C3302-2, Component Side Ground

Is the resistance between 300 and 300,000 ohms between pins 2 and 3; and greater than 10,000 ohms between pin 2 and ground?
Yes GO to O15
No INSTALL a new driver seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
GO to O16

O15 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C339 or Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). GO to O16
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to O16

O16 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect: Passenger Side Airbag In-line C337.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


Both Ventilated Seats are Inoperative


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).

Possible Causes

  • Wiring, terminals or connectors
  • SCME

Visual Inspection and Diagnostic Pre-checks

  • Verify BJB fuse 77 (30A) is OK.

PINPOINT TEST P: BOTH VENTILATED SEATS ARE INOPERATIVE
P1 CHECK THE HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the heated seats using the touchscreen buttons.

Did the heated seats operate correctly?
Yes GO to P2
No DIAGNOSE the inoperative heated seats. GO to Pinpoint Test M

P2 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Driver Ventilated Seat is Inoperative/Does Not Operate Correctly


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground If the current to the driver seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC .
B14BE:11 Driver Seat Back Blower: Circuit Short To Ground If the current to the driver seat back blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC .

Possible Causes

  • Wiring, terminals or connectors
  • Cushion blower motor
  • Backrest blower motor
  • SCME

PINPOINT TEST Q: THE DRIVER VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
Q1 CHECK THE DRIVER HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the driver heated seat using the touchscreen.

Does the driver heated seat operate correctly?
Yes GO to Q2
No DIAGNOSE the inoperative driver heated seat. GO to Pinpoint Test N

Q2 CHECK THE BLOWER MOTOR AND DSM (DRIVER FRONT SEAT MODULE) CONNECTIONS
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Disconnect: Left Front Seat Cushion Blower Motor C3035.
  • Disconnect: Left Front Seat Backrest Blower Motor C3034.
  • Inspect the DSM , front seat cushion blower motor and front seat backrest blower motor connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes GO to Q3
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

Q3 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: DSM C341A.
  • Disconnect: Left Front Seat Cushion Blower Motor C3035.
  • Disconnect: Left Front Seat Backrest Blower Motor C3034.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-1   Ground
      C341A-2   Ground
      C341A-5   Ground
      C341A-7   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to Q8
No GO to Q4

Q4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-1   Ground
      C341A-2   Ground
      C341A-5   Ground
      C341A-7   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to Q5
No REPAIR the affected circuit. GO to Q8

Q5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-5   C3034-3
      C341A-7   C3034-1
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-5   C3035-3
      C341A-7   C3035-1
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-1   C3034-2
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-2   C3035-2

Are the resistances less than 3 ohms?
Yes If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
REFER to: Front Seat Backrest Blower Motor - Vehicles With: Black Label Trim/Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to Q6
If only the cushion blower did not operate correctly, INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to Q6
If both the cushion and backrest blower motors did not operate correctly, GO to Q7
No REPAIR the affected circuit. GO to Q8

Q6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to Q8
No GO to Q8

Q7 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). GO to Q8
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to Q8

Q8 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


The Passenger Ventilated Seat is Inoperative/Does Not Operate Correctly


Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground If the current to the passenger seat cushion blower exceeds a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC .
B14C2:11 Passenger Seat Back Blower: Circuit Short To Ground If the current to the passenger seat back blower exceeds a programmed threshold, the SCME shuts down the passenger seat system and sets this DTC .

Possible Causes

  • Wiring, terminals or connectors
  • SCME

PINPOINT TEST R: THE PASSENGER VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
R1 CHECK THE PASSENGER HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the passenger heated seat using the touchscreen buttons.

Did the passenger heated seat operate correctly?
Yes GO to R2
No DIAGNOSE the inoperative passenger heated seat. GO to Pinpoint Test O

R2 CHECK THE BLOWER MOTOR AND DSM (DRIVER FRONT SEAT MODULE) CONNECTIONS
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Disconnect: Right Front Seat Cushion Blower Motor C3695.
  • Disconnect: Right Front Seat Backrest Blower Motor C3039.
  • Inspect the DSM , front seat cushion blower motor and front seat backrest blower motor connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes GO to R3
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

R3 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: DSM C341A.
  • Disconnect: Right Front Seat Cushion Blower Motor C3695.
  • Disconnect: Right Front Seat Backrest Blower Motor C3039.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-3   Ground
      C341A-4   Ground
      C341A-6   Ground
      C341A-15   Ground

Is any voltage present?
Yes REPAIR the affected circuit. GO to R8
No GO to R4

R4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-3   Ground
      C341A-4   Ground
      C341A-6   Ground
      C341A-15   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to R5
No REPAIR the affected circuit. GO to R8

R5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-6   C3039-1
      C341A-15   C3039-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-6   C3695-1
      C341A-15   C3695-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-3   C3039-2
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C341A-4   C3695-2

Are the resistances less than 3 ohms?
Yes If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Front Seat Backrest Blower Motor (501-10A Front Seats, Removal and Installation).
REFER to: Front Seat Backrest Blower Motor - Vehicles With: Black Label Trim/Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to R6
If only the cushion blower did not operate correctly, INSTALL a new cushion blower motor.
REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation).
GO to R6
If both the cushion and backrest blower motors did not operate correctly, GO to R7
No REPAIR the affected circuit. GO to R8

R6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 or Passenger Side Airbag In-line C339 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
GO to R8
No GO to R8

R7 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the DSM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSM connectors. Make sure they seat and latch correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 or Passenger Side Airbag In-line C339 at this time. Reconnect all previously disconnected connectors.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, If the concern is still present, INSTALL a new SCME .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). GO to R8
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to R8

R8 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).


DTC: U0140:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM / SCMB and the BCM communicate using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0140:00 Lost Communication with Body Control Module: No Sub Type Information Set by the DSM / SCMB whenever it has lost communication to the BCM for 5 seconds or longer while DSM / SCMB input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • SCMB
  • BCM

PINPOINT TEST S: DTC: U0140:00
S1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to S2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

S2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to S3
No

S3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) OR SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM or SCMB self-test.

Is DTC U0140:00 still present?
Yes GO to S4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

S4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No If the DTC was set in the DSM , INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). If the DTC was set in the SCMB , INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


The Multi-Contour Seat Feature is Inoperative/ Does Not Operate Correctly — Driver


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B146F:00 Back Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B146F:04 Back Bladder System Electropneumatic Failure: System Internal Failure During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B1470:00 Cushion Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B1470:04 Cushion Bladder System Electropneumatic Failure: System Internal Failure During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B1471:11 Multi-Contour Seat Switch Input: Circuit Short To Ground This DTC sets when the seat control switch (multi-contour) input circuit is shorted to ground. This DTC may be set on-demand or in continuous memory.
B1471:13 Multi-Contour Seat Switch Input: Circuit Open This DTC sets when the seat control switch (multi-contour) input circuit is open. This DTC may be set on-demand or in continuous memory.
B1473:11 Pump Driver: Circuit Short To Ground This DTC sets when the current draw for the air pump driver is too high for a predetermined time period. This DTC may be set on-demand or in continuous memory.

Possible Sources

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly
  • Front seat cushion adjuster
  • SCMG

Visual Inspection and Diagnostic Pre-checks

  • Verify all the hose connections to the SCMG are correctly seated and not leaking and/or check for any signs of restrictions (kinked or pinched hoses).

PINPOINT TEST T: THE MULTI-CONTOUR SEAT FEATURE IS INOPERATIVE/ DOES NOT OPERATE CORRECTLY — DRIVER
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
T1 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • NOTE: If the diagnostic scan tool does not communicate to the SCMG ,
  • Using a diagnostic scan tool, perform the SCMG self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?
Yes For B1471:11, GO to T3
For B1471:13, GO to T5
For B1473:11, GO to T2
If B146F:00 and B1470:00 are both present, GO to T7
For B146F:00 or B146F:04, GO to T13
For B1470:00 or B1470:04, GO to T17
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMG DTC Chart.
No If the multi-contour seat is inoperative, GO to T7
If only the seat backrest bladder(s) are not operating correctly, GO to T13
If only the seat cushion bladder(s) are not operating correctly, GO to T17

T2 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR A SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Remove the seat backrest access panel.
  • Disconnect: SCMG C3385.
  • Disconnect: Left Multi-Contour Seat Control Pump C3383.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3383-1   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to T22
No REPAIR the circuit. GO to T22

T3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) WITH SEAT CONTROL SWITCH DISCONNECTED
  • Ignition OFF.
  • Disconnect: Driver Seat Control Switch C3387.
  • Ignition ON.
  • Using a diagnostic scan tool, perform the SCMG self-test.

Was DTC B1471:13 retrieved?
Yes INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
No GO to T4

T4 CHECK THE SEAT CONTROL SWITCH CIRCUIT FOR A SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Remove the seat backrest access panel.
  • Disconnect: SCMG C3385.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to T21
No REPAIR the circuit. GO to T22

T5 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) WITH JUMPER WIRE CONNECTED TO SEAT CONTROL SWITCH CONNECTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: Driver Seat Control Switch C3387.
  • Connect a fused jumper wire:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-5   C3387-2
  • Ignition ON.
  • Using a diagnostic scan tool, perform the SCMG self-test.

Was DTC B1471:11 retrieved?
Yes REMOVE the fused jumper wire. INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to T22
No REMOVE the fused jumper wire. GO to T6

T6 CHECK THE SEAT CONTROL SWITCH CIRCUITS FOR AN OPEN CIRCUIT
  • Ignition OFF.
  • Remove the seat backrest access panel.
  • Disconnect: SCMG C3385.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3387-5   C3385-15
      C3387-2   C3385-11

Are the resistances less than 3 ohms?
Yes GO to T21
No REPAIR the affected circuit. GO to T22

T7 VERIFY THE MULTI-CONTOUR SEAT CONTROL PUMP OPERATES
  • Ignition OFF.
  • Remove the seat backrest access panel.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the seat control switch or touchscreen, place the multi-contour seat into the MASSAGE mode.
  • Listen near the backrest to determine whether the multi-contour seat control pump is on.

Is the multi-contour seat control pump on?
Yes GO to T11
No GO to T8

T8 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP GROUND FOR AN OPEN CIRCUIT

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag In-line C3051.
  • Disconnect: Left Multi-Contour Seat Control Pump C3383.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3383-2   Ground

Is the resistance less than 3 ohms?
Yes GO to T9
No REPAIR the circuit. GO to T22

T9 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR VOLTAGE

NOTICE: The following step uses a test light to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C3383-1   C3383-2
  • Ignition ON.
  • Using a diagnostic scan tool, toggle the SCMG PID Seat Bladder Pump Status (DRV_SBLADR_PMP) on while observing the test light.

Does the test light illuminate?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to T22
No GO to T10

T10 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR AN OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect: SCMG C3385.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3385-3   C3383-1

Is the resistance less than 3 ohms?
Yes GO to T21
No REPAIR the circuit. GO to T22

T11 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP HOSE FOR CORRECT INSTALLATION OR DAMAGE
  • Ignition OFF.
  • NOTE: The multi-contour seat control pump hose is the red hose located within the blue lock. Visually inspect the multi-contour seat control pump hose for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

Is the multi-contour seat control pump hose installed correctly with no damage?
Yes GO to T12
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to T22

T12 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP OUTPUT
  • Disconnect the multi-contour seat control pump hose at the SCMG .
    • Remove the blue lock (with all 4 hoses)
    • Disconnect the red hose from the blue lock.
  • Connect a suitable pressure gauge to the (red) multi-contour seat control pump hose.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the seat control switch or touchscreen, place the multi-contour seat into the MASSAGE mode while observing the pressure gauge. Note the highest pressure obtained.
  • Ignition OFF.

Was the pressure equal to or greater than 169 kPa (24.5 psi)?
Yes GO to T23
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to T22

T13 INFLATE THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Backrest Lumbar
    DRV_UPPR_LUMB (Upper Lumbar Inflate Status) DRV_LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    DRV_MID_LUMB (Mid-Lumbar Bladder Inflate Status) DRV_LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    DRV_LOW_LUMB (Lower Lumbar Bladder Inflate Status) DRV_LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    DRV_L_BOLST (Left Side Bolster Bladder Inflate Status) DRV_SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    DRV_R_BOLST (Right Side Bolster Bladder Inflate Status) DRV_SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to T14
No GO to T16

T14 VENT THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Backrest Lumbar
    DRV_UPPR_LUMB (Upper Lumbar Inflate Status) DRV_LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    DRV_MID_LUMB (Mid-Lumbar Bladder Inflate Status) DRV_LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    DRV_LOW_LUMB (Lower Lumbar Bladder Inflate Status) DRV_LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    DRV_L_BOLST (Left Side Bolster Bladder Inflate Status) DRV_SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    DRV_R_BOLST (Right Side Bolster Bladder Inflate Status) DRV_SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to T23
No GO to T15

T15 CHECK THE BACKREST HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the backrest hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )

Are the backrest hoses installed correctly with no damage or restrictions?
Yes GO to T23
No REPAIR the hose(s) or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

T16 CHECK THE BACKREST HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect backrest hose(s) at the SCMG .

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect backrest hose.
  • NOTICE: To prevent damage to the front seat power lumbar assembly, do not exceed 169 kPa (24.5 psi) during this step. Pump the suspect backrest hose and bladder to 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to T23
No INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

T17 INFLATE THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Seat Cushion
    DRV_SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) DRV_SC_BLADDR1 (Seat Cushion Bladder 1)
    DRV_SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) DRV_SC_BLADDR2 (Seat Cushion Bladder 2)
    DRV_SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) DRV_SC_BLADDR3 (Seat Cushion Bladder 3)
    DRV_SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) DRV_SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    DRV_LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) DRV_SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    DRV_RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) DRV_SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to T18
No GO to T20

T18 VENT THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMG Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Seat Cushion
    DRV_SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) DRV_SC_BLADDR1 (Seat Cushion Bladder 1)
    DRV_SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) DRV_SC_BLADDR2 (Seat Cushion Bladder 2)
    DRV_SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) DRV_SC_BLADDR3 (Seat Cushion Bladder 3)
    DRV_SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) DRV_SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    DRV_LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) DRV_SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    DRV_RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) DRV_SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to T23
No GO to T19

T19 CHECK THE CUSHION HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the cushion hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose are not restricted (bends, kinks, etc...).

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)

Are the cushion hoses installed correctly with no damage or restrictions?
Yes GO to T23
No REPAIR the hose(s) or INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

T20 CHECK THE CUSHION HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect cushion hose(s) at the SCMG .

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect cushion hose.
  • NOTICE: To prevent damage to the front seat cushion adjuster, do not exceed 169 kPa (24.5 psi) during this step. Carefully pump the suspect cushion hose to approximately 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to T23
No INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

T21 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMG connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMG connector. Make sure it seats and latches correctly.
  • NOTE: Do not reconnect Driver Side Airbag In-line C3051 at this time. Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
GO to T22
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to T22

T22 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Driver Side Airbag In-line C3051.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

T23 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMG connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMG connector. Make sure it seats and latches correctly.
  • Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


The Multi-Contour Seat Feature is Inoperative/ Does Not Operate Correctly — Passenger


Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions


REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
B146F:00 Back Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B146F:04 Back Bladder System Electropneumatic Failure: System Internal Failure During self-test, the system inflates each of the bladders in the back of the seat, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B1470:00 Cushion Bladder System Electropneumatic Failure: No Sub Type Information During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B1470:04 Cushion Bladder System Electropneumatic Failure: System Internal Failure During self-test, the system inflates each of the bladders in the seat cushion, then monitors for a change in pressure. If the bladders successfully inflate, the system deflates the bladders while checking for a change in pressure. If the pressure change is not within the allowed threshold, this DTC sets.
B1471:11 Multi-Contour Seat Switch Input: Circuit Short To Ground This DTC sets when the seat control switch (multi-contour seat) input circuit is shorted to ground. This DTC may be set on-demand or in continuous memory.
B1471:13 Multi-Contour Seat Switch Input: Circuit Open This DTC sets when the seat control switch (multi-contour seat) input circuit is open. This DTC may be set on-demand or in continuous memory.
B1473:11 Pump Driver: Circuit Short To Ground This DTC sets when the current draw for the air pump driver is too high for a predetermined time period. This DTC may be set on-demand or in continuous memory.

Possible Sources

  • Wiring, terminals or connectors
  • Seat control switch
  • Front seat power lumbar assembly
  • Front seat cushion adjuster
  • SCMH

Visual Inspection and Diagnostic Pre-checks

  • Verify all the hose connections to the SCMH are correctly seated and not leaking and/or check for any signs of restrictions (kinked or pinched hoses).

PINPOINT TEST U: THE MULTI-CONTOUR SEAT FEATURE IS INOPERATIVE/ DOES NOT OPERATE CORRECTLY — PASSENGER
  WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
U1 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • NOTE: If the diagnostic scan tool does not communicate to the SCMH ,
  • Using a diagnostic scan tool, perform the SCMH self-test.

Were any Diagnostic Trouble Codes (DTCs) retrieved?
Yes For B1471:11, GO to U3
For B1471:13, GO to U5
For B1473:11, GO to U2
If B146F:00 and B1470:00 are both present, GO to U7
For B146F:00 or B146F:04, GO to U13
For B1470:00 or B1470:04, GO to U17
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCMH DTC Chart.
No If the multi-contour seat is inoperative, GO to U7
If only the seat backrest bladder(s) are not operating correctly, GO to U13
If only the seat cushion bladder(s) are not operating correctly, GO to U17

U2 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR A SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Remove the seat backrest access panel.
  • Disconnect: SCMH C3386.
  • Disconnect: Right Multi-Contour Seat Control Pump C3384.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3384-1   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to U22
No REPAIR the circuit. GO to U22

U3 RECHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) WITH SEAT CONTROL SWITCH DISCONNECTED
  • Ignition OFF.
  • Disconnect: Passenger Seat Control Switch C3388.
  • Ignition ON.
  • Using a diagnostic scan tool, perform the SCMH self-test.

Was DTC B1471:13 retrieved?
Yes INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
No GO to U4

U4 CHECK THE SEAT CONTROL SWITCH CIRCUIT FOR A SHORT TO GROUND

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Remove the seat backrest access panel.
  • Disconnect: SCMH C3386.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to U21
No REPAIR the circuit. GO to U22

U5 RECHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) WITH JUMPER WIRE CONNECTED TO SEAT CONTROL SWITCH CONNECTOR

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Passenger Seat Control Switch C3388.
  • Connect a fused jumper wire:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-5   C3388-2
  • Ignition ON.
  • Using a diagnostic scan tool, perform the SCMH self-test.

Was DTC B1471:11 retrieved?
Yes REMOVE the fused jumper wire. INSTALL a new seat control switch.
REFER to: Front Seat Control Switch - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to U22
No REMOVE the fused jumper wire. GO to U6

U6 CHECK THE SEAT CONTROL SWITCH CIRCUITS FOR AN OPEN CIRCUIT
  • Ignition OFF.
  • Remove the seat backrest access panel.
  • Disconnect: SCMH C3386.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3388-5   C3386-15
      C3388-2   C3386-11

Are the resistances less than 3 ohms?
Yes GO to U21
No REPAIR the affected circuit. GO to U22

U7 VERIFY THE MULTI-CONTOUR SEAT CONTROL PUMP OPERATES
  • Ignition OFF.
  • Remove the seat backrest access panel.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the seat control switch or touchscreen, place the multi-contour seat into the MASSAGE mode.
  • Listen near the backrest to determine whether the multi-contour seat control pump is on.

Is the multi-contour seat control pump on?
Yes GO to U11
No GO to U8

U8 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP GROUND FOR AN OPEN CIRCUIT

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Passenger Side Airbag In-line C339.
  • Disconnect: Right Multi-Contour Seat Control Pump C3384.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3384-2   Ground

Is the resistance less than 3 ohms?
Yes GO to U9
No REPAIR the circuit. GO to U22

U9 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR VOLTAGE

NOTICE: The following step uses a test light to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Positive Lead Measurement / Action Negative Lead
      C3384-1   C3384-2
  • Ignition ON.
  • Using a diagnostic scan tool, toggle the SCMH PID Seat Bladder Pump Status (PAS_SBLADR_PMP) on while observing the test light.

Does the test light illuminate?
Yes INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to U22
No GO to U10

U10 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP FEED FOR AN OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect: SCMH C3386.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3386-3   C3384-1

Is the resistance less than 3 ohms?
Yes GO to U21
No REPAIR the circuit. GO to U22

U11 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP HOSE FOR CORRECT INSTALLATION OR DAMAGE
  • Ignition OFF.
  • NOTE: The multi-contour seat control pump hose is the red hose located within the blue lock. Visually inspect the multi-contour seat control pump hose for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

Is the multi-contour seat control pump hose installed correctly with no damage?
Yes GO to U12
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to U22

U12 CHECK THE MULTI-CONTOUR SEAT CONTROL PUMP OUTPUT
  • Disconnect the multi-contour seat control pump hose at the SCMH .
    • Remove the blue lock (with all 4 hoses)
    • Disconnect the red hose from the blue lock.
  • Connect a suitable pressure gauge to the (red) multi-contour seat control pump hose.
  • Ignition ON.
  • NOTE: When in MASSAGE mode, the multi-contour seat control pump operates continuously. Using the seat control switch or touchscreen, place the multi-contour seat into the MASSAGE mode while observing the pressure gauge. Note the highest pressure obtained.
  • Ignition OFF.

Was the pressure equal to or greater than 169 kPa (24.5 psi)?
Yes GO to U23
No REPAIR the hose or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).
GO to U22

U13 INFLATE THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Backrest Lumbar
    PAS_UPPR_LUMB (Upper Lumbar Inflate Status) PAS_LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    PAS_MID_LUMB (Mid-Lumbar Bladder Inflate Status) PAS_LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    PAS_LOW_LUMB (Lower Lumbar Bladder Inflate Status) PAS_LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    PAS_L_BOLST (Left Side Bolster Bladder Inflate Status) PAS_SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    PAS_R_BOLST (Right Side Bolster Bladder Inflate Status) PAS_SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to U14
No GO to U16

U14 VENT THE SUSPECT BACKREST BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Backrest Lumbar
    PAS_UPPR_LUMB (Upper Lumbar Inflate Status) PAS_LUM_BLADR1 (Lumbar Bladder 1 Pressure)
    PAS_MID_LUMB (Mid-Lumbar Bladder Inflate Status) PAS_LUM_BLADR2 (Lumbar Bladder 2 Pressure)
    PAS_LOW_LUMB (Lower Lumbar Bladder Inflate Status) PAS_LUM_BLADR3 (Lumbar Bladder 3 Pressure)
    Backrest Bolster
    PAS_L_BOLST (Left Side Bolster Bladder Inflate Status) PAS_SIDE_BLDR1 (Side Bolsters Bladder Pressure 1)
    PAS_R_BOLST (Right Side Bolster Bladder Inflate Status) PAS_SIDE_BLDR2 (Side Bolsters Bladder Pressure 2)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to U23
No GO to U15

U15 CHECK THE BACKREST HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the backrest hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose is not restricted, bent, kinked or damaged.

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )

Are the backrest hoses installed correctly with no damage or restrictions?
Yes GO to U23
No REPAIR the hose(s) or INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

U16 CHECK THE BACKREST HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect backrest hose(s) at the SCMH .

    Blue lock:

    • Yellow hose - Lumbar bladder 3 (lower)
    • Transparent green hose - Lumbar bladder 2 (middle)
    • Clear hose - Lumbar bladder 1 (upper)

    Yellow lock:

    • Transparent orange hose - Side bolster 2 (RH )
    • Transparent red hose - Side bolster 1 (LH )
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect backrest hose.
  • NOTICE: To prevent damage to the front seat power lumbar assembly, do not exceed 169 kPa (24.5 psi) during this step. Pump the suspect backrest hose and bladder to 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) for 2 minutes?
Yes GO to U23
No INSTALL a new front seat power lumbar assembly.
REFER to: Front Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

U17 INFLATE THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Seat Cushion
    PAS_SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) PAS_SC_BLADDR1 (Seat Cushion Bladder 1)
    PAS_SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) PAS_SC_BLADDR2 (Seat Cushion Bladder 2)
    PAS_SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) PAS_SC_BLADDR3 (Seat Cushion Bladder 3)
    PAS_SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) PAS_SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    PAS_LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) PAS_SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    PAS_RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) PAS_SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • NOTE: During this step, the multi-contour seat control pump is on continuously until the output state control PID is toggled back to the NONE mode (off). Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the INFLATE mode until the pressure PID reaches its highest pressure reading. Note the highest pressure achieved.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.
  • Continue to observe the pressure Parameter Identifications (PIDs) for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 169 kPa (24.5 psi) and hold pressure within 7 kPa (1 psi) over a time period of 2 minutes?
Yes GO to U18
No GO to U20

U18 VENT THE SUSPECT CUSHION BLADDER(S) WHILE MONITORING THE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, select and view the SCMH Parameter Identifications (PIDs) for the suspected bladder(s) as indicated in the table below:
    Output State Control PID Pressure PID
    Seat Cushion
    PAS_SC_INFLAT1 (Seat Cushion Bladder Inflate Status 1) PAS_SC_BLADDR1 (Seat Cushion Bladder 1)
    PAS_SC_INFLAT2 (Seat Cushion Bladder Inflate Status 2) PAS_SC_BLADDR2 (Seat Cushion Bladder 2)
    PAS_SC_INFLAT3 (Seat Cushion Bladder Inflate Status 3) PAS_SC_BLADDR3 (Seat Cushion Bladder 3)
    PAS_SC_INFLAT4 (Seat Cushion Bladder Inflate Status 4) PAS_SC_BLADDR4 (Seat Cushion Bladder 4)
    Seat Cushion Bolster
    PAS_LBOT_BOLST (Left Bottom Bolster Bladder Inflate Status) PAS_SC_BOLST1 (Seat Cushion Bolster Bladder 1 Pressure)
    PAS_RBOT_BOLST (Right Bottom Bolster Bladder Inflate Status) PAS_SC_BOLST2 (Seat Cushion Bolster Bladder 2 Pressure)
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the VENT mode until the pressure PID reaches its lowest pressure reading.
  • Using the diagnostic scan tool, toggle the suspected bladder(s) output state control PID to the NONE mode.

Did the suspected bladder(s) pressure drop to approximately 100 kPa (14.5 psi)?
Yes GO to U23
No GO to U19

U19 CHECK THE CUSHION HOSE(S) FOR CORRECT INSTALLATION, RESTRICTION OR DAMAGE
  • Ignition OFF.
  • Visually inspect the cushion hose(s) for correct installation or damage and check the hose routing to make sure the entire length of the hose are not restricted (bends, kinks, etc...).

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)

Are the cushion hoses installed correctly with no damage or restrictions?
Yes GO to U23
No REPAIR the hose(s) or INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

U20 CHECK THE CUSHION HOSES FOR LEAKS
  • Ignition OFF.
  • NOTE: To disconnect the suspect hose(s), first remove the associated lock (with all the associated hoses) as an assembly. Once removed, individual hose(s) can be removed from the lock. Disconnect the suspect cushion hose(s) at the SCMH .

    Orange lock:

    • Black hose - Seat cushion bladder 4 (RH front)
    • Transparent blue hose - Seat cushion bladder 3 (RH rear)
    • Blue hose - Seat cushion bladder 2 (LH rear)
    • Green hose - Seat cushion bladder 1 (LH front)

    Green lock:

    • Transparent yellow hose - Seat cushion bolster 2 (RH front)
    • Transparent magenta hose - Seat cushion bolster 1 (LH rear)
  • Connect a suitable hand vacuum/pressure pump (with pressure gauge) to the suspect cushion hose.
  • NOTICE: To prevent damage to the front seat cushion adjuster, do not exceed 169 kPa (24.5 psi) during this step. Carefully pump the suspect cushion hose to approximately 138 kPa (20 psi).
  • Continue to observe the pressure gauge for 2 minutes to check for system air leaks.

Did the suspected bladder(s) inflate to approximately 138 kPa (20 psi) and hold pressure within 7 kPa (1 psi) over a time period of 2 minutes?
Yes GO to U23
No INSTALL a new front seat cushion adjuster.
REFER to: Front Seat Cushion Adjuster - Vehicles With: Multi-Contour Seats (501-10A Front Seats, Removal and Installation).

U21 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMH connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMH connector. Make sure it seats and latches correctly.
  • NOTE: Do not reconnect Passenger Side Airbag In-line C339 at this time. Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
GO to U22
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to U22

U22 VERIFY THE SRS (SUPPLEMENTAL RESTRAINT SYSTEM) PROVES OUT SUCCESSFULLY

  • REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).
  • Connect: Passenger Side Airbag In-line C339.
  • Connect all previously disconnected connectors.

  • REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Did the SRS prove out successfully?
Yes Repair is complete. RETURN the vehicle to the customer.
No
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

U23 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMH connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMH connector. Make sure it seats and latches correctly.
  • Reconnect all previously disconnected connectors and hoses.
  • Ignition ON.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.


DTC: U0100:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM / SCMB and the PCM communicate using the HS-CAN1 and MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0100:00 Lost Communication with ECM/PCM "A": No Sub Type Information Set by the DSM / SCMB whenever it has lost communication to the PCM for 5 seconds or longer while DSM / SCMB input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • SCMB
  • PCM

PINPOINT TEST V: DTC: U0100:00
V1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to V2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the PCM pass the network test?
Yes GO to V3
No

V3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) OR SCMB (PASSENGER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM or SCMB self-test.

Is DTC U0100:00 still present?
Yes GO to V4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V4 CHECK FOR DTC U0100:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0100:00 set in other modules?
Yes
   Click here to access Guided Routine (PCM).
No If the DTC was set in the DSM , INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation). If the DTC was set in the SCMB , INSTALL a new SCMB .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0140:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCME and the BCM communicate using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0140:00 Lost Communication with Body Control Module: No Sub Type Information Set by the SCME whenever it has lost communication to the BCM for 5 seconds or longer while SCME input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCME
  • BCM

PINPOINT TEST W: DTC: U0140:00
W1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to W2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to W3
No

W3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0140:00 still present?
Yes GO to W4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

W4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0257:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCME and the APIM communicate using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0257:00 Lost Communication with Front Controls / Display Interface Module: No Sub Type Information Set by the SCME whenever it has lost communication to the APIM while SCME input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCME
  • APIM

PINPOINT TEST X: DTC: U0257:00
X1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to X2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

X2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?
Yes GO to X3
No

X3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCME self-test.

Is DTC U0257:00 still present?
Yes GO to X4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

X4 CHECK FOR DTC U0257:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new APIM .
REFER to: SYNC Module [APIM] (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
No INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0212:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM and the SCCM communicate using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information Set by the DSM whenever it has lost communication to the SCCM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • SCCM

PINPOINT TEST Y: DTC: U0212:00
Y1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Y2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Y2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the SCCM pass the network test?
Yes GO to Y3
No

Y3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0212:00 still present?
Yes GO to Y4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Y4 CHECK FOR DTC U0212:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0212:00 set in other modules?
Yes INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0253:87


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM and the SCCM communicate using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0253:87 Lost Communication with Accessory Protocol Interface Module: Missing Message Set by the DSM whenever it has lost communication to the APIM for 5 seconds or longer while DSM input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • DSM
  • APIM

PINPOINT TEST Z: DTC: U0253:87
Z1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Z2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Z2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?
Yes GO to Z3
No

Z3 RECHECK THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the DSM self-test.

Is DTC U0253:87 still present?
Yes GO to Z4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Z4 CHECK FOR DTC U0253:87 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0253:87 set in other modules?
Yes INSTALL a new APIM . Refer to the appropriate section in Group 415 for the procedure.
No INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).


DTC: U0140:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG and SCMH communicate to the BCM using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0140:00 Lost Communication with Body Control Module: No Sub Type Information Set by the SCMG or SCMH whenever it has lost communication to the BCM for 5 seconds or longer while the SCMG / SCMH input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCMG / SCMH
  • BCM

PINPOINT TEST AA: DTC: U0140:00
AA1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AA2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AA2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to AA3
No

AA3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0140:00 still present?
Yes GO to AA4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AA4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


DTC: U0208:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG / SCMH and DSM communicate using the MS-CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0208:00 Lost Communication With "Seat Control Module A": No Sub Type Information Set by the SCMG / SCMH whenever it has lost communication to the DSM for 5 seconds or longer while the SCMG / SCMH input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCMG / SCMH
  • DSM

PINPOINT TEST AB: DTC: U0208:00
AB1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AB2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AB2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the DSM pass the network test?
Yes GO to AB3
No

AB3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0208:00 still present?
Yes GO to AB4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AB4 CHECK FOR DTC U0208:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0208:00 set in other modules?
Yes INSTALL a new DSM .
REFER to: Driver Front Seat Module (DSM) (501-10A Front Seats, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


DTC: U024B:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMH communicates to the SCMG using the CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U024B:00 Lost Communication with Seat Control Module "G": No Sub Type Information Set by the SCMH whenever it has lost communication to the SCMG for 5 seconds or longer while the SCMH input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCMH
  • SCMG

PINPOINT TEST AC: DTC: U024B:00
AC1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AC2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AC2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the SCMG pass the network test?
Yes GO to AC3
No

AC3 RECHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMH self-test.

Is DTC U024B:00 still present?
Yes GO to AC4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AC4 CHECK FOR DTC U024B:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U024B:00 set in other modules?
Yes INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).
No INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


DTC: U0253:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG and SCMH communicate to the APIM using the CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Set by the SCMG / SCMH whenever it has lost communication to the APIM for 5 seconds or longer while the SCMG / SCMH input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCMG / SCMH
  • APIM

PINPOINT TEST AD: DTC: U0253:00
AD1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AD2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AD2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?
Yes GO to AD3
No

AD3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0253:00 still present?
Yes GO to AD4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AD4 CHECK FOR DTC U0253:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0253:00 set in other modules?
Yes INSTALL a new APIM . Refer to the appropriate section in Group 415 for the procedure.
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


DTC: U0256:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG and SCMH communicate to the APIM using the CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0256:00 Lost Communication With Front Controls Interface Module "A": No Sub Type Information Set by the SCMG / SCMH whenever it has lost communication to the APIM for 5 seconds or longer while the SCMG / SCMH input voltage is between 10 and 15.5 volts.

Possible Causes

  • Module communication
  • SCMG / SCMH
  • APIM

PINPOINT TEST AE: DTC: U0256:00
AE1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AE2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AE2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?
Yes GO to AE3
No

AE3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0256:00 still present?
Yes GO to AE4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AE4 CHECK FOR DTC U0256:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0256:00 set in other modules?
Yes INSTALL a new APIM .
REFER to: SYNC Module [APIM] (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


DTC: U0422:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG and SCMH communicate to the BCM using the CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Set by the SCMG / SCMH whenever it has received an unknown ignition status from the BCM .

Possible Causes

  • Module communication
  • SCMG / SCMH
  • BCM

PINPOINT TEST AF: DTC: U0422:00
AF1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AF2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AF2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to AF3
No

AF3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0422:00 still present?
Yes GO to AF4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AF4 CHECK FOR DTC U0422:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0422:00 set in other modules?
Yes INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


DTC: U0455:00


Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG and SCMH communicate to the OCSM using the CAN .


  DTC Fault Trigger Conditions


DTC Description Fault Trigger Conditions
U0455:00 Invalid Data Received From Restraints Occupant Classification System Module: No Sub Type Information Set by the SCMG or SCMH whenever it has received an invalid status from the OCSM .

Possible Causes

  • Module communication
  • SCMG / SCMH
  • OCSM

PINPOINT TEST AG: DTC: U0455:00
AG1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AG2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AG2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the OCSM pass the network test?
Yes GO to AG3
No

AG3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMG / SCMH self-test.

Is DTC U0455:00 still present?
Yes GO to AG4
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

AG4 CHECK FOR DTC U0455:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0455:00 set in other modules?
Yes INSTALL a new OCSM .
REFER to: Occupant Classification System (OCS) Sensor - Vehicles With: Multi-Contour Seats (501-20B Supplemental Restraint System, Removal and Installation).
No INSTALL a new SCMG or SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).


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