Lincoln Nautilus Manuals

Lincoln Nautilus: Information and Entertainment System - General Information - Vehicles With: SYNC 4 / Information and Entertainment System. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

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).


Module DTC Description Action
ACM B150C:55 Automobile Audio Bus (A2B) Node 1: Not Configured GO to Pinpoint Test C
ACM B150C:87 Automobile Audio Bus (A2B) Node 1: Missing Message GO to Pinpoint Test C
ACM B150C:8F Automobile Audio Bus (A2B) Node 1: Erratic GO to Pinpoint Test C
ACM B1511:01 Automobile Audio Bus (A2B) Master Node: General Electrical Failure GO to Pinpoint Test C
ACM B1511:11 Automobile Audio Bus (A2B) Master Node: Circuit Short To Ground GO to Pinpoint Test C
ACM B1511:12 Automobile Audio Bus (A2B) Master Node: Circuit Short To Battery GO to Pinpoint Test C
ACM B1511:13 Automobile Audio Bus (A2B) Master Node: Circuit Open GO to Pinpoint Test C
ACM B1511:95 Automobile Audio Bus (A2B) Master Node: Incorrect Assembly GO to Pinpoint Test C
ACM B1A01:01 Speaker #1: General Electrical Failure GO to Pinpoint Test F
ACM B1A01:11 Speaker #1: Circuit Short To Ground GO to Pinpoint Test F
ACM B1A01:12 Speaker #1: Circuit Short To Battery GO to Pinpoint Test F
ACM B1A01:13 Speaker #1: Circuit Open GO to Pinpoint Test F
ACM B1A02:01 Speaker #2: General Electrical Failure GO to Pinpoint Test F
ACM B1A02:11 Speaker #2: Circuit Short To Ground GO to Pinpoint Test F
ACM B1A02:12 Speaker #2: Circuit Short To Battery GO to Pinpoint Test F
ACM B1A02:13 Speaker #2: Circuit Open GO to Pinpoint Test F
ACM B1A03:01 Speaker #3: General Electrical Failure GO to Pinpoint Test F
ACM B1A03:11 Speaker #3: Circuit Short To Ground GO to Pinpoint Test F
ACM B1A03:12 Speaker #3: Circuit Short To Battery GO to Pinpoint Test F
ACM B1A03:13 Speaker #3: Circuit Open GO to Pinpoint Test F
ACM B1A04:01 Speaker #4: General Electrical Failure GO to Pinpoint Test F
ACM B1A04:11 Speaker #4: Circuit Short To Ground GO to Pinpoint Test F
ACM B1A04:12 Speaker #4: Circuit Short To Battery GO to Pinpoint Test F
ACM B1A04:13 Speaker #4: Circuit Open GO to Pinpoint Test F
ACM B1A05:02 Speaker #5: General Signal Failure GO to Pinpoint Test G
ACM B1A06:01 Speaker #6: General Electrical Failure GO to Pinpoint Test F
ACM B1A06:11 Speaker #6: Circuit Short To Ground GO to Pinpoint Test F
ACM B1A06:12 Speaker #6: Circuit Short To Battery GO to Pinpoint Test F
ACM B1A06:13 Speaker #6: Circuit Open GO to Pinpoint Test F
ACM B1A89:11 Satellite Antenna: Circuit Short To Ground GO to Pinpoint Test B
ACM B1A89:13 Satellite Antenna: Circuit Open GO to Pinpoint Test B
ACM U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information GO to Pinpoint Test Y
ACM U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test Z
ACM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information GO to Pinpoint Test AC
ACM U0237:00 Lost Communication With Digital Audio Control Module 'C': No Sub Type Information GO to Pinpoint Test AE
ACM U0238:00 Lost Communication With Digital Audio Control Module 'D': No Sub Type Information GO to Pinpoint Test AF
ACM U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information GO to Pinpoint Test AG
ACM U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information GO to Pinpoint Test AH
ACM U201A:51 Control Module Main Calibration Data: Not Programmed GO to Pinpoint Test AM
ACM U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test AM
ACM U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO to Pinpoint Test AM
ACM U3000:41 Control Module: General Checksum Failure GO to Pinpoint Test AN
ACM U3000:42 Control Module: General Memory Failure GO to Pinpoint Test AN
ACM U3000:96 Control Module: Component Internal Failure GO to Pinpoint Test AN
ACM U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AI
ACM U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AJ
APIM B108E:01 Display: General Electrical Failure GO to Pinpoint Test L
APIM B108E:02 Display: General Signal Failure GO to Pinpoint Test L
APIM B108E:4A Display: Incorrect Component Installed GO to Pinpoint Test L
APIM B108E:4B Display: Over Temperature GO to Pinpoint Test L
APIM B108E:63 Display: Circuit/Component Protection Time-Out GO to Pinpoint Test L
APIM B108E:87 Display: Missing Message GO to Pinpoint Test L
APIM B119F:01 GPS Antenna: General Electrical Failure GO to Pinpoint Test S
APIM B119F:13 GPS Antenna: Circuit Open GO to Pinpoint Test S
APIM B1252:11 USB Port: Circuit Short To Ground GO to Pinpoint Test P
APIM B1252:13 USB Port: Circuit Open GO to Pinpoint Test P
APIM B14FD:11 External Media Control Connectivity: Circuit Short To Ground GO to Pinpoint Test P
APIM B156D:54 TCU Customer Connectivity Settings Synchronization With HMI: Missing Calibration GO to Pinpoint Test AS
APIM B156D:89 TCU Customer Connectivity Settings Synchronization With HMI: Data Transfer Failure GO to Pinpoint Test AS
APIM B15EB:57 Consumer Apps: Invalid/Incompatible Software Component GO to Pinpoint Test AS
APIM B1D79:11 Microphone Input: Circuit Short To Ground GO to Pinpoint Test N
APIM B1D79:12 Microphone Input: Circuit Short To Battery GO to Pinpoint Test N
APIM B1D79:13 Microphone Input: Circuit Open GO to Pinpoint Test N
APIM U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0121:55 Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A': Not Configured GO to Pinpoint Test AS
APIM U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test AQ
APIM U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information GO to Pinpoint Test AQ
APIM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information GO to Pinpoint Test AQ
APIM U0159:00 Lost Communication With Parking Assist Control Module 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0162:00 Lost Communication With Navigation Display Module: No Sub Type Information GO to Pinpoint Test L
APIM U0184:00 Lost Communication With Radio: No Sub Type Information GO to Pinpoint Test AQ
APIM U0198:00 Lost Communication With Telematic Control Module 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0208:00 Lost Communication With 'Seat Control Module A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0209:00 Lost Communication With 'Seat Control Module B': No Sub Type Information GO to Pinpoint Test AQ
APIM U020C:00 Lost Communication with Wireless Accessory Charging Module 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0212:00 Lost Communication With Steering Column Control Module: No Sub Type Information GO to Pinpoint Test AQ
APIM U0214:00 Lost Communication With Remote Function Actuation Module: No Sub Type Information GO to Pinpoint Test AQ
APIM U0232:00 Lost Communication With Side Obstacle Detection Control Module 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0233:00 Lost Communication With Side Obstacle Detection Control Module 'B': No Sub Type Information GO to Pinpoint Test AQ
APIM U0238:00 Lost Communication With Digital Audio Control Module 'D': No Sub Type Information GO to Pinpoint Test AQ
APIM U023B:00 Lost Communication With Image Processing Module B: No Sub Type Information GO to Pinpoint Test AQ
APIM U024B:00 Lost Communication with Seat Control Module 'G': No Sub Type Information GO to Pinpoint Test AQ
APIM U024C:00 Lost Communication with Seat Control Module 'H': No Sub Type Information GO to Pinpoint Test AQ
APIM U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information GO to Pinpoint Test AQ
APIM U0415:00 Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information GO to Pinpoint Test AR
APIM U0415:94 Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': Unexpected Operation GO to Pinpoint Test AR
APIM U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information GO to Pinpoint Test AR
APIM U0452:00 Invalid Data Received From Restraints Control Module: No Sub Type Information GO to Pinpoint Test AR
APIM U1A00:87 Private Communication Network: Missing Message GO to Pinpoint Test B
APIM U2017:45 Control Module Software #2: Program Memory Failure GO to Pinpoint Test AS
APIM U2017:51 Control Module Software #2: Not Programmed GO to Pinpoint Test AS
APIM U2017:52 Control Module Software #2: Not Activated GO to Pinpoint Test AS
APIM U2017:54 Control Module Software #2: Missing Calibration GO to Pinpoint Test AS
APIM U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test AS
APIM U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO to Pinpoint Test AS
APIM U3000:04 Control Module: System Internal Failures GO to Pinpoint Test AT
APIM U3000:05 Control Module: System Programming Failures GO to Pinpoint Test AT
APIM U3000:09 Control Module: Component Failures GO to Pinpoint Test AT
APIM U3000:41 Control Module: General Checksum Failure GO to Pinpoint Test AT
APIM U3000:43 Control Module: Special Memory Failure GO to Pinpoint Test AT
APIM U3000:57 Control Module: Invalid/Incompatible Software Component GO to Pinpoint Test AS
APIM U3000:88 Control Module: Bus Off GO to Pinpoint Test AQ
APIM U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AI
APIM U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AJ
DACMC B116A:01 Handset Microphone: General Electrical Failure GO to Pinpoint Test X
DACMC B117A:01 Backup Microphone: General Electrical Failure GO to Pinpoint Test X
DACMC B13F5:01 Microphone 3: General Electrical Failure GO to Pinpoint Test X
DACMC U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information GO to Pinpoint Test Y
DACMC U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test Z
DACMC U2024:00 Control Module Cal-Config Data: No Sub Type Information GO to Pinpoint Test AM
DACMC U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test AM
DACMC U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO to Pinpoint Test AM
DACMC U3000:41 Control Module: General Checksum Failure GO to Pinpoint Test AN
DACMC U3000:42 Control Module: General Memory Failure GO to Pinpoint Test AN
DACMC U3000:92 Control Module: Performance Or Incorrect Operation GO to Pinpoint Test AN
DACMC U3000:94 Control Module: Unexpected Operation GO to Pinpoint Test AN
DACMC U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AI
DACMC U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AJ
DSP B128A:01 Speaker #13: General Electrical Failure GO to Pinpoint Test I
DSP B128A:11 Speaker #13: Circuit Short To Ground GO to Pinpoint Test I
DSP B128A:12 Speaker #13: Circuit Short To Battery GO to Pinpoint Test I
DSP B128A:13 Speaker #13: Circuit Open GO to Pinpoint Test I
DSP B128B:01 Speaker #14: General Electrical Failure GO to Pinpoint Test I
DSP B128B:11 Speaker #14: Circuit Short To Ground GO to Pinpoint Test I
DSP B128B:12 Speaker #14: Circuit Short To Battery GO to Pinpoint Test I
DSP B128B:13 Speaker #14: Circuit Open GO to Pinpoint Test I
DSP B128C:01 Speaker #15: General Electrical Failure GO to Pinpoint Test I
DSP B128C:11 Speaker #15: Circuit Short To Ground GO to Pinpoint Test I
DSP B128C:12 Speaker #15: Circuit Short To Battery GO to Pinpoint Test I
DSP B128C:13 Speaker #15: Circuit Open GO to Pinpoint Test I
DSP B128D:01 Speaker #16: General Electrical Failure GO to Pinpoint Test I
DSP B128D:11 Speaker #16: Circuit Short To Ground GO to Pinpoint Test I
DSP B128D:12 Speaker #16: Circuit Short To Battery GO to Pinpoint Test I
DSP B128D:13 Speaker #16: Circuit Open GO to Pinpoint Test I
DSP B128E:01 Speaker #17: General Electrical Failure GO to Pinpoint Test I
DSP B128E:11 Speaker #17: Circuit Short To Ground GO to Pinpoint Test I
DSP B128E:12 Speaker #17: Circuit Short To Battery GO to Pinpoint Test I
DSP B128E:13 Speaker #17: Circuit Open GO to Pinpoint Test I
DSP B128F:01 Speaker #18: General Electrical Failure GO to Pinpoint Test I
DSP B128F:11 Speaker #18: Circuit Short To Ground GO to Pinpoint Test I
DSP B128F:12 Speaker #18: Circuit Short To Battery GO to Pinpoint Test I
DSP B128F:13 Speaker #18: Circuit Open GO to Pinpoint Test I
DSP B1290:01 Speaker #19: General Electrical Failure GO to Pinpoint Test I
DSP B1290:11 Speaker #19: Circuit Short To Ground GO to Pinpoint Test I
DSP B1290:12 Speaker #19: Circuit Short To Battery GO to Pinpoint Test I
DSP B1290:13 Speaker #19: Circuit Open GO to Pinpoint Test I
DSP B1291:01 Speaker #20: General Electrical Failure GO to Pinpoint Test I
DSP B1291:11 Speaker #20: Circuit Short To Ground GO to Pinpoint Test I
DSP B1291:12 Speaker #20: Circuit Short To Battery GO to Pinpoint Test I
DSP B1291:13 Speaker #20: Circuit Open GO to Pinpoint Test I
DSP B13FB:11 Audio Enable Line: Circuit Short To Ground GO to Pinpoint Test C
DSP B1A01:01 Speaker #1: General Electrical Failure GO to Pinpoint Test H
DSP B1A01:01 Speaker #1: General Electrical Failure GO to Pinpoint Test I
DSP B1A01:11 Speaker #1: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A01:11 Speaker #1: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A01:12 Speaker #1: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A01:12 Speaker #1: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A01:13 Speaker #1: Circuit Open GO to Pinpoint Test H
DSP B1A01:13 Speaker #1: Circuit Open GO to Pinpoint Test I
DSP B1A02:01 Speaker #2: General Electrical Failure GO to Pinpoint Test H
DSP B1A02:01 Speaker #2: General Electrical Failure GO to Pinpoint Test I
DSP B1A02:11 Speaker #2: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A02:11 Speaker #2: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A02:12 Speaker #2: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A02:12 Speaker #2: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A02:13 Speaker #2: Circuit Open GO to Pinpoint Test H
DSP B1A02:13 Speaker #2: Circuit Open GO to Pinpoint Test I
DSP B1A03:01 Speaker #3: General Electrical Failure GO to Pinpoint Test H
DSP B1A03:01 Speaker #3: General Electrical Failure GO to Pinpoint Test I
DSP B1A03:11 Speaker #3: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A03:11 Speaker #3: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A03:12 Speaker #3: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A03:12 Speaker #3: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A03:13 Speaker #3: Circuit Open GO to Pinpoint Test H
DSP B1A03:13 Speaker #3: Circuit Open GO to Pinpoint Test I
DSP B1A04:01 Speaker #4: General Electrical Failure GO to Pinpoint Test H
DSP B1A04:01 Speaker #4: General Electrical Failure GO to Pinpoint Test I
DSP B1A04:11 Speaker #4: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A04:11 Speaker #4: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A04:12 Speaker #4: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A04:12 Speaker #4: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A04:13 Speaker #4: Circuit Open GO to Pinpoint Test H
DSP B1A04:13 Speaker #4: Circuit Open GO to Pinpoint Test I
DSP B1A05:01 Speaker #5: General Electrical Failure GO to Pinpoint Test H
DSP B1A05:01 Speaker #5: General Electrical Failure GO to Pinpoint Test I
DSP B1A05:11 Speaker #5: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A05:11 Speaker #5: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A05:12 Speaker #5: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A05:12 Speaker #5: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A05:13 Speaker #5: Circuit Open GO to Pinpoint Test H
DSP B1A05:13 Speaker #5: Circuit Open GO to Pinpoint Test I
DSP B1A06:01 Speaker #6: General Electrical Failure GO to Pinpoint Test H
DSP B1A06:01 Speaker #6: General Electrical Failure GO to Pinpoint Test I
DSP B1A06:11 Speaker #6: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A06:11 Speaker #6: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A06:12 Speaker #6: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A06:12 Speaker #6: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A06:13 Speaker #6: Circuit Open GO to Pinpoint Test H
DSP B1A06:13 Speaker #6: Circuit Open GO to Pinpoint Test I
DSP B1A07:01 Speaker #7: General Electrical Failure GO to Pinpoint Test H
DSP B1A07:01 Speaker #7: General Electrical Failure GO to Pinpoint Test I
DSP B1A07:11 Speaker #7: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A07:11 Speaker #7: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A07:12 Speaker #7: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A07:12 Speaker #7: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A07:13 Speaker #7: Circuit Open GO to Pinpoint Test H
DSP B1A07:13 Speaker #7: Circuit Open GO to Pinpoint Test I
DSP B1A08:01 Speaker #8: General Electrical Failure GO to Pinpoint Test H
DSP B1A08:01 Speaker #8: General Electrical Failure GO to Pinpoint Test I
DSP B1A08:11 Speaker #8: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A08:11 Speaker #8: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A08:12 Speaker #8: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A08:12 Speaker #8: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A08:13 Speaker #8: Circuit Open GO to Pinpoint Test H
DSP B1A08:13 Speaker #8: Circuit Open GO to Pinpoint Test I
DSP B1A09:01 Speaker #9: General Electrical Failure GO to Pinpoint Test H
DSP B1A09:01 Speaker #9: General Electrical Failure GO to Pinpoint Test I
DSP B1A09:11 Speaker #9: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A09:11 Speaker #9: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A09:12 Speaker #9: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A09:12 Speaker #9: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A09:13 Speaker #9: Circuit Open GO to Pinpoint Test H
DSP B1A09:13 Speaker #9: Circuit Open GO to Pinpoint Test I
DSP B1A10:01 Speaker #10: General Electrical Failure GO to Pinpoint Test H
DSP B1A10:01 Speaker #10: General Electrical Failure GO to Pinpoint Test I
DSP B1A10:11 Speaker #10: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A10:11 Speaker #10: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A10:12 Speaker #10: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A10:12 Speaker #10: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A10:13 Speaker #10: Circuit Open GO to Pinpoint Test H
DSP B1A10:13 Speaker #10: Circuit Open GO to Pinpoint Test I
DSP B1A11:01 Speaker #11: General Electrical Failure GO to Pinpoint Test H
DSP B1A11:01 Speaker #11: General Electrical Failure GO to Pinpoint Test I
DSP B1A11:11 Speaker #11: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A11:11 Speaker #11: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A11:12 Speaker #11: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A11:12 Speaker #11: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A11:13 Speaker #11: Circuit Open GO to Pinpoint Test H
DSP B1A11:13 Speaker #11: Circuit Open GO to Pinpoint Test I
DSP B1A12:01 Speaker #12: General Electrical Failure GO to Pinpoint Test H
DSP B1A12:01 Speaker #12: General Electrical Failure GO to Pinpoint Test I
DSP B1A12:11 Speaker #12: Circuit Short To Ground GO to Pinpoint Test H
DSP B1A12:11 Speaker #12: Circuit Short To Ground GO to Pinpoint Test I
DSP B1A12:12 Speaker #12: Circuit Short To Battery GO to Pinpoint Test H
DSP B1A12:12 Speaker #12: Circuit Short To Battery GO to Pinpoint Test I
DSP B1A12:13 Speaker #12: Circuit Open GO to Pinpoint Test H
DSP B1A12:13 Speaker #12: Circuit Open GO to Pinpoint Test I
DSP U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information GO to Pinpoint Test Y
DSP U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test Z
DSP U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information GO to Pinpoint Test AC
DSP U0184:00 Lost Communication With Radio: No Sub Type Information GO to Pinpoint Test AD
DSP U0237:00 Lost Communication With Digital Audio Control Module 'C': No Sub Type Information GO to Pinpoint Test AE
DSP U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information GO to Pinpoint Test AG
DSP U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information GO to Pinpoint Test AH
DSP U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information GO to Pinpoint Test AL
DSP U201A:51 Control Module Main Calibration Data: Not Programmed GO to Pinpoint Test AM
DSP U2024:41 Control Module Cal-Config Data: General Checksum Failure GO to Pinpoint Test AM
DSP U2024:48 Control Module Cal-Config Data: Supervision Software Failure GO to Pinpoint Test AM
DSP U2024:51 Control Module Cal-Config Data: Not Programmed GO to Pinpoint Test AM
DSP U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test AM
DSP U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO to Pinpoint Test AM
DSP U3000:41 Control Module: General Checksum Failure GO to Pinpoint Test AN
DSP U3000:42 Control Module: General Memory Failure GO to Pinpoint Test AN
DSP U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AI
DSP U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AJ
FCIMB B10B8:63 Push Buttons: Circuit/Component Protection Time-Out GO to Pinpoint Test AN
FCIMB U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test Z
FCIMB U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information GO to Pinpoint Test AB
FCIMB U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information GO to Pinpoint Test AG
FCIMB U0422:81 Invalid Data Received From Body Control Module: Invalid Serial Data Received GO to Pinpoint Test AL
FCIMB U0554:00 Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information GO to Pinpoint Test AL
FCIMB U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test AM
FCIMB U3000:49 Control Module: Internal Electronic Failure GO to Pinpoint Test AN
FCIMB U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AI
FCIMB U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AJ
SCCM B137F:09 Steering Wheel Left Switch Pack: Component Failures GO to Pinpoint Test K
SCCM B137F:11 Steering Wheel Left Switch Pack: Circuit Short To Ground GO to Pinpoint Test K
SCCM B137F:17 Steering Wheel Left Switch Pack: Circuit Voltage Above Threshold GO to Pinpoint Test K
SCCM B1380:09 Steering Wheel Right Switch Pack: Component Failures GO to Pinpoint Test K
SCCM B1380:11 Steering Wheel Right Switch Pack: Circuit Short To Ground GO to Pinpoint Test K
SCCM B1380:17 Steering Wheel Right Switch Pack: Circuit Voltage Above Threshold GO to Pinpoint Test K
TCU B116C:04 External SIM Cable/SIM Card: System Internal Failures GO to Pinpoint Test AN
TCU B116C:57 External SIM Cable/SIM Card: Invalid/Incompatible Software Component GO to Pinpoint Test AN
TCU B1246:11 GSM (Group System for Mobile) Antenna: Circuit Short To Ground GO to Pinpoint Test T
TCU B1246:13 GSM (Group System for Mobile) Antenna: Circuit Open GO to Pinpoint Test T
TCU B1D55:11 Antenna #2: Circuit Short To Ground GO to Pinpoint Test U
TCU B1D55:13 Antenna #2: Circuit Open GO to Pinpoint Test U
TCU U0001:09 High Speed CAN Communication Bus: Component Failures GO to Pinpoint Test AK
TCU U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information GO to Pinpoint Test Y
TCU U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test Z
TCU U0146:09 Lost Communication With Serial Data Gateway 'A': Component Failures GO to Pinpoint Test AA
TCU U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information GO to Pinpoint Test AL
TCU U0554:00 Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information GO to Pinpoint Test AL
TCU U1A01:09 Communication Link: Component Failures GO to Pinpoint Test AM
TCU U1A01:93 Communication Link: No Operation GO to Pinpoint Test AN
TCU U1A4B:52 Control Module Processor B: Not Activated GO to Pinpoint Test AN
TCU U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test AM
TCU U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO to Pinpoint Test AM
TCU U2101:56 Control Module Configuration Incompatible: Invalid/Incompatible Configuration GO to Pinpoint Test AM
TCU U3000:04 Control Module: System Internal Failures GO to Pinpoint Test AO
TCU U3000:09 Control Module: Component Failures GO to Pinpoint Test AN
TCU U3000:43 Control Module: Special Memory Failure GO to Pinpoint Test AN
TCU U3000:57 Control Module: Invalid/Incompatible Software Component GO to Pinpoint Test AP
TCU U3000:96 Control Module: Component Internal Failure GO to Pinpoint Test AN
TCU U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AI
TCU U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AJ

Symptom Charts

Symptom Chart: Radio

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).

Condition Actions
A module does not respond to the diagnostic scan tool  
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
The AM radio is inoperative   GO to Pinpoint Test A
The FM radio is inoperative   GO to Pinpoint Test A
Poor AM reception   GO to Pinpoint Test A
Poor FM reception   GO to Pinpoint Test A
Continuous seek or scan in AM / FM mode   GO to Pinpoint Test A
Poor satellite radio reception   GO to Pinpoint Test B
SIRIUS™ on-demand streaming content does not play or is not available   GO to Pinpoint Test B
SIRIUS™ content pausing repeatedly   GO to Pinpoint Test B
Poor sound quality or no sound while in satellite radio mode - all other functions operate correctly   GO to Pinpoint Test B
The satellite radio is inoperative or does not operate correctly   GO to Pinpoint Test B
The audio system does not operate correctly from the FCIMB   GO to Pinpoint Test J
One or more radio steering wheel control button is inoperative   GO to Pinpoint Test K
The speed compensated volume is inoperative   GO to Pinpoint Test E
Unable to change the audio source   GO to Pinpoint Test C
Audio System Off displays at regular intervals   GO to Pinpoint Test C

Symptom Chart: Speakers and Sound Quality - 11 Speaker System

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).

Condition Actions
No sound from all speakers   GO to Pinpoint Test C
The left speakers are inoperative when using Bluetooth and USB hub SYNC features   GO to Pinpoint Test M
The right speakers are inoperative when using Bluetooth and USB hub SYNC features   GO to Pinpoint Test M
Poor sound quality or distorted sound from one or more speakers (not all speakers)   GO to Pinpoint Test D
The instrument panel center speaker is inoperative   GO to Pinpoint Test F
The left front door tweeter speaker is inoperative   GO to Pinpoint Test F
The right front door tweeter speaker is inoperative   GO to Pinpoint Test F
The left front door woofer speaker is inoperative   GO to Pinpoint Test F
The right front door woofer speaker is inoperative   GO to Pinpoint Test F
The left rear door tweeter speaker is inoperative   GO to Pinpoint Test F
The right rear door tweeter speaker is inoperative   GO to Pinpoint Test F
The left rear door woofer speaker is inoperative   GO to Pinpoint Test F
The right rear door woofer speaker is inoperative   GO to Pinpoint Test F
The subwoofer speaker is inoperative   GO to Pinpoint Test G

Symptom Chart: Speakers and Sound Quality - 13 Speaker System

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).

Condition Actions
No sound from all speakers   GO to Pinpoint Test C
The left speakers are inoperative when using Bluetooth and USB hub SYNC features   GO to Pinpoint Test M
The right speakers are inoperative when using Bluetooth and USB hub SYNC features   GO to Pinpoint Test M
Poor sound quality or distorted sound from one or more speakers (not all speakers)   GO to Pinpoint Test D
The instrument panel center speaker is inoperative   GO to Pinpoint Test H
The left front door tweeter speaker is inoperative   GO to Pinpoint Test H
The right front door tweeter speaker is inoperative   GO to Pinpoint Test H
The left front door midrange speaker is inoperative   GO to Pinpoint Test H
The right front door midrange speaker is inoperative   GO to Pinpoint Test H
The left front door woofer speaker is inoperative   GO to Pinpoint Test H
The right front door woofer speaker is inoperative   GO to Pinpoint Test H
The left rear door tweeter speaker is inoperative   GO to Pinpoint Test H
The right rear door tweeter speaker is inoperative   GO to Pinpoint Test H
The left rear door woofer speaker is inoperative   GO to Pinpoint Test H
The right rear door woofer speaker is inoperative   GO to Pinpoint Test H
The subwoofer speaker is inoperative   GO to Pinpoint Test H

Symptom Chart: Speakers and Sound Quality - 19 Speaker System

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).

Condition Actions
No sound from all speakers   GO to Pinpoint Test C
The left speakers are inoperative when using Bluetooth and USB hub SYNC features   GO to Pinpoint Test M
The right speakers are inoperative when using Bluetooth and USB hub SYNC features   GO to Pinpoint Test M
Poor sound quality or distorted sound from one or more speakers (not all speakers)   GO to Pinpoint Test D
The instrument panel center speaker is inoperative   GO to Pinpoint Test I
The left front door tweeter speaker is inoperative   GO to Pinpoint Test I
The right front door tweeter speaker is inoperative   GO to Pinpoint Test I
The left front door midrange speaker is inoperative   GO to Pinpoint Test I
The right front door midrange speaker is inoperative   GO to Pinpoint Test I
The left front door woofer speaker is inoperative   GO to Pinpoint Test I
The right front door woofer speaker is inoperative   GO to Pinpoint Test I
The left rear door tweeter speaker is inoperative   GO to Pinpoint Test I
The right rear door tweeter speaker is inoperative   GO to Pinpoint Test I
The left rear door midrange speaker is inoperative   GO to Pinpoint Test I
The right rear door midrange speaker is inoperative   GO to Pinpoint Test I
The left rear door woofer speaker is inoperative   GO to Pinpoint Test I
The right rear door woofer speaker is inoperative   GO to Pinpoint Test I
The left D-pillar speaker is inoperative   GO to Pinpoint Test I
The right D-pillar speaker is inoperative   GO to Pinpoint Test I
The subwoofer speaker is inoperative   GO to Pinpoint Test I

Symptom Chart: Display Unit

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).

Condition Actions
The display unit is blank or black   GO to Pinpoint Test L
The display unit is not responsive to touch   GO to Pinpoint Test L
The display unit is slow to respond to touch   GO to Pinpoint Test L
The image displayed on the display unit is incorrect, the image color is incorrect, or the image is distorted, flickering, or unclear   GO to Pinpoint Test L
The image on the display unit is locked or frozen   GO to Pinpoint Test L

Symptom Chart: SYNC Features/Media/Phone

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).

Condition Actions
The SYNC system does not operate correctly from the FCIMB   GO to Pinpoint Test J
One or more steering wheel SYNC control button is inoperative   GO to Pinpoint Test K
The left speakers are inoperative when using Bluetooth and media hub SYNC features   GO to Pinpoint Test M
The right speakers are inoperative when using Bluetooth and media hub SYNC features   GO to Pinpoint Test M
The SYNC system audible prompts are inoperative or do not operate correctly   GO to Pinpoint Test M
During a phone call, no incoming audio is heard in the vehicle   GO to Pinpoint Test M
Poor sound quality, distorted, or no sound while in SYNC mode   GO to Pinpoint Test M
Voice commands are inoperative or outgoing audio is not transmitted during a phone call   GO to Pinpoint Test N
The SYNC system does not respond to the wake word   GO to Pinpoint Test O
Unable to pair Bluetooth device or a Bluetooth functionality is inoperative   GO to Pinpoint Test Q
A USB device is not recognized by the SYNC system or audio files on a USB device are not found using the SYNC system from one or both USB ports   GO to Pinpoint Test P
The 911 Assist or Emergency Assistance Not Operational message displays   GO to Pinpoint Test R
SYNC AppLink is inoperative or does not operate correctly   GO to Pinpoint Test V
FordPass is inoperative or does not operate correctly   GO to Pinpoint Test T
Android Auto™ or Apple CarPlay™ is inoperative   GO to Pinpoint Test W
The vehicle Wi-Fi hotspot feature is inoperative, experiencing poor data speed or cannot stream any data   GO to Pinpoint Test U
Automatic system updates do not occur or are delayed  
REFER to: Module Configuration (418-01B Module Configuration - Vehicles With: Over-the-Air (OTA) Programming, Diagnosis and Testing).

Symptom Chart: Navigation/Compass

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).

Condition Actions
The compass is inoperative or does not operate correctly   GO to Pinpoint Test S
Navigation is inoperative or does not operate correctly   GO to Pinpoint Test S
Traffic announcement is inoperative (vehicles equipped with a DAB radio)   GO to Pinpoint Test B

Pinpoint Tests


PINPOINT TEST A: POOR AM (AMPLITUDE MODULATION) - FM (FREQUENCY MODULATION) RECEPTION

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Coaxial Antenna Cable ACM Connections


Item Part Number Description
1 Audio unit antenna connection
2 FM2 diversity antenna connection
3 Satellite radio connection

Possible Sources

  • Wiring, terminals, or connectors
  • Noise suppression filter
  • Antenna cable
  • Antenna amplifier
  • On-glass antenna grid
  • ACM

Visual Inspection and Pre-checks

  • Inspect the on-glass antenna grid for damage.

NOTE: Prior to carrying out diagnostics, it may be beneficial to determine the cause using the Antenna Tool Kit (refer to the Rotunda catalog for the latest part number) or equivalent tool.

A1 CHECK THE AUDIO SYSTEM RECEPTION WITH THE ENGINE RUNNING
  • Operate the audio system in AM / FM mode.
  • NOTE: Activate the rear window defrost function while the engine is running. Check the reception with the engine running and with the engine off.

Does the poor reception only occur with the engine running?
Yes GO to A2
No GO to A5

A2 CHECK THE AUDIO SYSTEM RECEPTION WITH THE ENGINE RUNNING AND THE REAR DEFROST FUNCTION DEACTIVATED
  • Start the engine.
  • NOTE: Make sure the rear window defrost function is not activated. Operate the audio system in AM / FM mode.

Does the poor reception occur with the rear window defrost function deactivated?
Yes GO to A3
No INSTALL a new noise suppression filter at the rear window defrost grid power supply and ground connection as necessary.

A3 CHECK THE GENERATOR
  • Ignition OFF.
  • Disconnect the generator "A" connector.
  • NOTE: Do not increase the engine RPM above idle speed. Start the engine.
  • NOTE: Do not increase the RPM above idle speed. Incorrect test results may occur if the engine speed is increased above idle. With the engine at idle only, operate the audio system in AM / FM mode.

Is the reception OK?
Yes INSTALL a new generator. REFER to the appropriate Removal and Installation procedure in section 414-02.
No GO to A4

A4 CHECK THE IGNITION CIRCUITS
  • Ignition OFF.
  • Connect the generator "A" connector.
  • Inspect the engine compartment and make sure all ignition coils are correctly and securely connected, and no cracks are visible in the coil housings.
  • Inspect all the wiring harnesses and connectors for damaged insulation and loose or broken conditions.

Are the ignition components OK?
Yes USE a jumper cable to ground various parts of the vehicle to the frame (for example: engine, fenders, quarter panels, stone deflectors, air cleaner, and body sheet metal). When the noise is eliminated, PROVIDE a permanent ground where necessary.
No REPAIR the ignition system as necessary.

A5 INSPECT THE ANTENNA ON-GLASS GRID
  • Ignition OFF.
  • Inspect the connection to the antenna amplifier and the antenna on-glass grid for damage.

Is the connection to the antenna amplifier OK and the on-glass antenna grid free from damage?
Yes GO to A6
No REPAIR the connection to the antenna amplifier or the window grid as necessary.

A6 CHECK FOR VOLTAGE TO THE AUDIO UNIT ANTENNA AMPLIFIER
  • Disconnect AM / FM 1 Antenna Amplifier C4194A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4194A-1   Ground

Is the voltage greater than 12 volts?
Yes GO to A9
No GO to A7

A7 CHECK THE AUDIO UNIT ANTENNA VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect ACM C240A .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4194A-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A8
No REPAIR the circuit.

A8 CHECK THE AM (AMPLITUDE MODULATION) / FM (FREQUENCY MODULATION) 1 ANTENNA VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4194A-1   C240A-2

Is the resistance less than 3 ohms?
Yes GO to A13
No REPAIR the circuit.

A9 CHECK THE ANTENNA CABLE FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the AM / FM 1 antenna cable from the AM / FM 1 antenna amplifier.
  • Disconnect the AM / FM 1 antenna cable from the ACM .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    AM / FM 1 antenna cable core   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to A10
No IDENTIFY the cable with the short to ground. INSTALL a new cable for the one in question.

A10 CHECK THE ANTENNA CABLE FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    AM / FM 1 antenna cable core   Ground

Is any voltage present?
Yes IDENTIFY the cable with the short to voltage. INSTALL a new cable for the one in question.
No GO to A11

A11 CHECK THE ANTENNA CABLE FOR AN OPEN
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    AM / FM 1 antenna cable core at the AM / FM 1 antenna amplifier AM / FM 1 antenna cable core at the ACM

Are the resistances less than 3 ohms?
Yes GO to A13
No IDENTIFY the cable with the open. INSTALL a new cable in question.

A12 ISOLATE THE AM (AMPLITUDE MODULATION) / FM (FREQUENCY MODULATION) 1 ANTENNA AMPLIFIER
  • Ignition OFF.
  • Connect the AM / FM 1 antenna cable to the ACM .
  • Install a new AM / FM 1 antenna amplifier.
    REFER to: Audio Unit Antenna Amplifier (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
  • Operate the audio system in AM / FM mode.

Is the reception OK?
Yes The repair is complete.
No GO to A13

A13 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST B: SATELLITE RADIO/SIRIUS™ STREAMING CONTENT/TRAFFIC ANNOUNCEMENT CONCERN

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

When a satellite radio subscription is active, the ESN of the satellite radio receiver built into the ACM associates with the VIN .

Coaxial Antenna Cable ACM Connections


Item Part Number Description
1 Audio unit antenna connection
2 FM2 diversity antenna connection
3 Satellite radio connection

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM B1A89:11 Satellite Antenna: Circuit Short To Ground Sets when the ACM detects a short to ground from the satellite radio cable.
ACM B1A89:13 Satellite Antenna: Circuit Open Sets when the ACM detects an open from the satellite radio cable.
APIM U1A00:87 Private Communication Network: Missing Message Sets when the APIM does not receive a valid response from the ACM over the serial data circuits.

Possible Sources

  • Expired subscription
  • Vehicle Connectivity or the SiriusXM™ with 360L setting disabled
  • Compass concern
  • Ethernet cable concern
  • Cellular data input concern
  • Obstructions in the antenna line of sight
  • Incorrectly matched ESN
  • Wiring, terminals, or connectors
  • Lower satellite radio antenna cable (includes GPS splitter)
  • GPS /satellite radio antenna
  • ACM
  • APIM

NOTE: Prior to carrying out diagnostics, it may be beneficial to determine the cause using the Antenna Tool Kit (refer to the Rotunda catalog for the latest part number) or equivalent tool.

B1 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U1A00:87
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the APIM self-test.

Is DTC U1A00:87 present?
Yes GO to B16
No For vehicles equipped with a satellite radio, GO to B2
For vehicles not equipped with a satellite radio, GO to B14

B2 CHECK FOR PROMOTIONAL CHANNEL 1
  • Select channel 1.

Does the satellite radio system receive channel 1 with normal sound quality?
Yes GO to B3
No GO to B10

B3 VERIFY AN ACTIVE SUBSCRIPTION
  • Operate the audio system in satellite radio mode and observe the display.

Does the display indicate the subscription has expired?
Yes GO to B4
No For a SIRIUS on-demand streaming data concern, GO to B6
For all other satellite radio concerns, GO to B9

B4 CHECK THE VEHICLE SERVICE HISTORY FOR ACM (AUDIO FRONT CONTROL MODULE) REPLACEMENT
  • Check the vehicle service history and determine if the ACM was replaced.

Does the vehicle service history indicate the ACM was recently replaced?
Yes GO to B5
No The subscription has expired. INSTRUCT the vehicle owner to contact SIRIUS to reactivate the subscription.

B5 VERIFY THE VIN (VEHICLE IDENTIFICATION NUMBER) AND THE ESN (ELECTRONIC SERIAL NUMBER) ON FILE MATCHES THE VIN (VEHICLE IDENTIFICATION NUMBER) AND THE ESN (ELECTRONIC SERIAL NUMBER) FROM THE VEHICLE
  • Retrieve the satellite radio ESN by tuning to channel 0.
  • Contact the SIRIUS Dealer Support.
  • Make sure the VIN and the ESN SIRIUS has on the customer file match the VIN and the ESN retrieved from the vehicle.

Does the VIN and the ESN on the SIRIUS customer file match the ESN and VIN retrieved from the vehicle?
Yes The subscription has expired. INSTRUCT the vehicle owner to contact SIRIUS to reactivate the subscription.
No INSTRUCT the vehicle owner to contact SIRIUS to update the VIN and the ESN retrieved from the vehicle.

B6 CHECK THE CONNECTIVITY SETTINGS USING THE TOUCHSCREEN DISPLAY UNIT
  • Access the settings menu on the display unit. Make sure the Vehicle Connectivity and the SiriusXM with 360L settings are enabled.

Are the Vehicle Connectivity and the SiriusXM with 360L settings enabled?
Yes GO to B7
No ENABLE the Vehicle Connectivity and the SiriusXM with 360L settings.

B7 CHECK FOR GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the GWM self-test.

Are any GWM Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the Master DTC Chart.
No GO to B8

B8 CHECK THE CELLULAR SIGNAL STRENGTH
  • Drive the vehicle to an outdoor location that is free from obstacles such as tall buildings.
  • Observe the cellular signal strength on the display unit.

Does the display indicate a good cellular strength signal of at least 2 bars?
Yes GO to B9
No GO to Pinpoint Test T

B9 VERIFY THE VIN (VEHICLE IDENTIFICATION NUMBER) AND THE ESN (ELECTRONIC SERIAL NUMBER) ON FILE MATCHES THE VIN (VEHICLE IDENTIFICATION NUMBER) AND THE ESN (ELECTRONIC SERIAL NUMBER) FROM THE VEHICLE
  • Retrieve the satellite radio ESN by tuning to channel 0.
  • Contact the SIRIUS Dealer Support.
  • Make sure the VIN and the ESN SIRIUS has on the file match the VIN and the ESN retrieved from the vehicle.
  • Drive the vehicle to an open location free from obstacles such as tall buildings or large trees.
  • Operate the audio system in satellite radio mode.
  • NOTE: It may take up to 30 minutes for the activation signal to be received and satellite radio functions to operate. Request for SIRIUS to send the activation signal to the vehicle 2-3 times.
  • Operate multiple channels with the audio system in satellite radio mode.

Does the satellite radio system receive multiple channels with normal sound quality?
Yes The system is operating correctly. The concern may have been caused by the SIRIUS file information not matching the vehicle or a result of the activation signal needing to be resent.
No GO to B12

B10 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OUTPUT VOLTAGE TO THE SATELLITE RADIO ANTENNA CABLE
  • Ignition OFF.
  • Disconnect the GPS /satellite radio antenna cable from the ACM .
  • Ignition ON.
  • NOTE: Refer to the diagram at the beginning of this test to identify the correct cable connection to the ACM . Using the female Flex Probe 300-08058 (0.5 mm x 0.5 mm) or equivalent, measure:
    Positive Lead Measurement / Action Negative Lead
    Satellite radio antenna cable core at the ACM (component side)   Ground

Is the voltage between 4.7 and 5.8 volts?
Yes GO to B11
No GO to B20

B11 CHECK FOR VOLTAGE TO THE GPS (GLOBAL POSITIONING SYSTEM) /SATELLITE RADIO ANTENNA
  • Ignition OFF.
  • Connect the satellite radio antenna cable to the ACM .
  • Disconnect the GPS /satellite radio antenna cable from the GPS /satellite radio antenna.
  • Ignition ON.
  • Using the female Flex Probe 300-08058 (0.5 mm x 0.5 mm) or equivalent, measure:
    Positive Lead Measurement / Action Negative Lead
    GPS /satellite radio antenna cable core at the antenna   Ground

Is the voltage between 4.7 and 5.8 volts?
Yes GO to B12
No IDENTIFY the cable with the open or short. INSTALL a new GPS cable for the one in question.
REFER to: Audio Unit Antenna Cable (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

B12 ISOLATE THE GPS (GLOBAL POSITIONING SYSTEM) /SATELLITE RADIO ANTENNA SPLITTER CABLE
  • Connect the GPS /satellite radio antenna cable to the GPS /satellite radio antenna.
  • INSTALL a new GPS /satellite radio antenna splitter cable.
    REFER to: Audio Unit Antenna Cable (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
  • For a satellite radio concern, check the operation of the satellite radio function.
  • For a Sirius on-demand streaming concern, check the operation of this feature.

Does the system in question operate correctly?
Yes The repair is complete.
No GO to B13

B13 CHECK THE ANTENNA BASE AND MOUNTING SURFACE
  • Remove the GPS /satellite radio antenna.
    REFER to: Audio Unit Antenna (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
  • Inspect for corrosion on the antenna base and the vehicle mounting surface.

Is antenna base and mounting free of corrosion?
Yes GO to B15
No REPAIR any corrosion on the antenna unit base and/or vehicle mounting surface. INSTALL the antenna and make sure the correct torque value is used when tightening the fastener.

B14 VERIFY THE COMPASS OPERATES CORRECTLY
  • Ignition ON.
  • Check the operation of the compass and make sure it operates correctly.

Does the compass operate correctly?
Yes GO to B15
No GO to Pinpoint Test S

B15 ISOLATE THE GPS (GLOBAL POSITIONING SYSTEM) /SATELLITE RADIO ANTENNA
  • INSTALL a new GPS /satellite radio antenna.
    REFER to: Audio Unit Antenna (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
  • For a satellite radio concern, check the operation of the satellite radio function.
  • For a Sirius on-demand streaming concern, check the operation of this feature.
  • For a traffic announcement (vehicles with a DAB radio) concern, check the operation of the traffic announcement feature.

Does the system in question operate correctly?
Yes The repair is complete.
No GO to B16

B16 CHECK THE SERIAL DATA CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect ACM C240A and C240B .
  • Disconnect APIM C2383A .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2383A-27   Ground
      C2383A-28   Ground
      C2383A-51   Ground
      C2383A-52   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to B17
No REPAIR the circuit in question.

B17 CHECK THE SERIAL DATA CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2383A-27   Ground
      C2383A-28   Ground
      C2383A-51   Ground
      C2383A-52   Ground

Is any voltage present?
Yes REPAIR the circuit in question.
No GO to B18

B18 CHECK THE SERIAL DATA CIRCUITS FOR A SHORT TOGETHER
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2383A-27   C2383A-28
      C2383A-51   C2383A-52

Is the resistance greater than 10,000 ohms?
Yes GO to B19
No REPAIR the circuits.

B19 CHECK THE SERIAL DATA CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors

      ACM C240A


    Positive Lead Measurement / Action Negative Lead
      C2383A-27   C240A-5
      C2383A-28   C240A-4

    Click to display connectors

      ACM C240B


    Positive Lead Measurement / Action Negative Lead
      C2383A-51   C4240B-6
      C2383A-52   C4240B-19

Are the resistances less than 3 ohms?
Yes GO to B20
No REPAIR the circuit in question.

B20 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to B21
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.

B21 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM connector.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the APIM connector. Make sure it seats and latches correctly.
  • 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, GO to Pinpoint Test AN
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.

PINPOINT TEST C: NO SOUND FROM ALL SPEAKERS

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

A short to ground or voltage in the circuitry to one of the speakers may cause multiple speakers to lose sound due to the built-in overload protection feature of the ACM . In this case, a speaker fault DTC sets.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM B150C:55 Automobile Audio Bus (A2B) Node 1: Not Configured Sets when the ACM detects a fault attempting to configure the audio DSP module as Slave 1.
ACM B150C:87 Automobile Audio Bus (A2B) Node 1: Missing Message Sets when the ACM detects a fault trying to communicate to the audio DSP module.
ACM B150C:8F Automobile Audio Bus (A2B) Node 1: Erratic Sets when the ACM detects a fault trying to communicate to the audio DSP module.
ACM B1511:01 Automobile Audio Bus (A2B) Master Node: General Electrical Failure Sets when the ACM detects a fault trying to communicate to the audio DSP module.
ACM B1511:11 Automobile Audio Bus (A2B) Master Node: Circuit Short To Ground Sets when the ACM detects a short to ground from the Automobile Audio Bus (A2B).
ACM B1511:12 Automobile Audio Bus (A2B) Master Node: Circuit Short To Battery Sets when the ACM detects a short to voltage from the Automobile Audio Bus (A2B).
ACM B1511:13 Automobile Audio Bus (A2B) Master Node: Circuit Open Sets when the ACM detects an open from the Automobile Audio Bus (A2B) cable.
ACM B1511:95 Automobile Audio Bus (A2B) Master Node: Incorrect Assembly Sets when the ACM detects the A2B cable circuitry is reversed.
DSP B13FB:11 Audio Enable Line: Circuit Short To Ground Sets when the audio DSP module does not detect the correct voltage signal from the enable circuit 5 seconds after receiving the ignition mode RUN message from the BCM .

Possible Sources

  • Network communication concern
  • Wiring, terminals, or connectors
  • Automobile Audio Bus (A2B) cable
  • Module configuration
  • DSP
  • ACM
C1 VERIFY THE ACM (AUDIO FRONT CONTROL MODULE) PASSES THE NETWORK TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the network test.

Does the ACM pass the network test?
Yes GO to C2
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

C2 VERIFY THE APIM (SYNC MODULE) PASSES THE NETWORK TEST
  • Review the results from the network test.

Does the APIM pass the network test?
Yes If equipped with the 11 speaker system, GO to C4
If equipped with the 13 or 19 speaker system, GO to C3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

C3 VERIFY THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) PASSES THE NETWORK TEST
  • Review the results from the network test.

Does the DSP pass the network test?
Yes GO to C4
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

C4 CHECK FOR APIM (SYNC MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the APIM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to C5

C5 CHECK FOR ACM (AUDIO FRONT CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the ACM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For any Automobile Audio Bus (A2B) DTC , GO to C13
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No If equipped with the 11 speaker system, GO to C16
If equipped with the 13 or 19 speaker system, GO to C6

C6 CHECK FOR DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) SPEAKER-RELATED DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the DSP self-test.

Are any speaker-related Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to C7

C7 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) ENABLE CIRCUIT FOR CORRECT VOLTAGE
  • Ignition OFF.
  • Disconnect DSP C4326C (13 speaker system).
  • Disconnect DSP C4452C (19 speaker system).
  • Ignition ON.
  • Turn the audio system on.
  • Measure:
    Click to display connectors

      13 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4326C-6   Ground

    Click to display connectors

      19 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4452C-10   Ground

Is the voltage between 3.5 and 7 volts?
Yes GO to C12
No GO to C8

C8 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) ENABLE CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect ACM C240B .
  • Measure:
    Click to display connectors

      13 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4326C-6   Ground

    Click to display connectors

      19 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4452C-10   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to C9
No REPAIR the circuit.

C9 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) ENABLE CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors

      13 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4326C-6   Ground

    Click to display connectors

      19 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4452C-10   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to C10

C10 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) ENABLE CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors

      13 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4326C-6   C240B-18

    Click to display connectors

      19 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4452C-10   C240B-18

Is the resistance less than 3 ohms?
Yes GO to C11
No REPAIR the circuit.

C11 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) CONFIGURATION
  • Connect DSP C4326C (13 speaker system).
  • Connect DSP C4452C (19 speaker system).
  • Connect ACM C240B .
  • Ignition ON.
  • Carry out the PMI \ programming for the ACM using as-built data.
    REFER to: Module Programming (418-01A Module Configuration, General Procedures).
  • Test the audio system for correct speaker operation.

Is sound heard from all of the speakers?
Yes The system is operating correctly. The cause may have been caused by incorrect module configuration.
No GO to C16

C12 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) CONFIGURATION
  • Ignition OFF.
  • Connect DSP C4326C (13 speaker system).
  • Connect DSP C4452C (19 speaker system).
  • Ignition ON.
  • Carry out the PMI programming for the DSP using as-built data.
    REFER to: Module Programming (418-01A Module Configuration, General Procedures).
  • Test the audio system for correct speaker operation.

Is sound heard from all of the speakers?
Yes The system is operating correctly. The cause may have been caused by incorrect module configuration.
No GO to C13

C13 CHECK THE FRONT AUTOMOBILE AUDIO BUS (A2B) CABLE
  • Ignition OFF.
  • Install a new front Automobile Audio Bus (A2B) cable.
  • Ignition ON.
  • Test the audio system for correct speaker operation.

Is sound heard from all of the speakers?
Yes The repair is complete.
No GO to C14

C14 CHECK THE REAR AUTOMOBILE AUDIO BUS (A2B) CABLE
  • Ignition OFF.
  • Install a new rear Automobile Audio Bus (A2B) cable.
  • Ignition ON.
  • Test the audio system for correct speaker operation.

Is sound heard from all of the speakers?
Yes The repair is complete.
No GO to C15

C15 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the DSP connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to C16
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.

C16 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST D: POOR SOUND QUALITY OR DISTORTED SOUND FROM ONE OR MORE SPEAKERS (NOT ALL SPEAKERS)

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Possible Sources

  • Loose component fasteners
  • Loose door handle, lock or other trim panel components and fasteners
  • Loose items in storage areas
  • Loose speaker grilles
  • Loose wire harnesses or wire harness fasteners
  • Speaker
  • Trim panel
  • Water shield bonding and placement

Visual Inspection and Pre-checks

  • Any map pockets and storage compartments (including cup holders) for contents that can rattle (if equipped)
  • Door pull cup attachments for correct fit (if equipped)
  • Door switch bezels for correct fit (if equipped)
  • Speaker grilles for correct fit
  • Trim panels for correct fit
D1 ISOLATE THE ZONE
  • Download all the diagnostic sound tracks to a suitable USB flash drive and connect it to the media hub.
    REFER to: Speaker Audio Test (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, General Procedures).
  • Operate the audio system in USB mode using the downloaded audio files.
  • Using the audio system fade and balance settings, adjust the audio sound to each of the zones and use the 6 diagnostic sound tracks to isolate the poor sound quality.
  • Locate and apply pressure to the trim panel(s) around the poor sound quality area in question.

Does applying pressure to a trim panel reduce or eliminate the noise?
Yes REPAIR or REPLACE the trim panel as needed.
No GO to D2

D2 REMOVE AND INSPECT BEHIND/UNDERNEATH THE SUSPECT TRIM PANEL
  • Remove the trim panel to access the suspect speaker.
  • Operate the audio system in USB mode using the downloaded audio files.
  • Validate where the poor sound quality area is located.
  • Check:
    • Trim panel for loose components (speaker grille for example) around the speaker area.
    • Trim panel joining components for missing or broken pieces.
    • Door latch mechanical parts for correct attachment.
    • Wire harnesses for correct routing and attachment.
    • Water shield for correct placement (speaker air path not blocked).
    • Water shield for correct bonding to sheet metal.
    • Storage areas for loose items.
    • All safety belt retractors.
    • All speaker bracket and related fasteners. Make sure they are secure and tightened to specified torque.

Is the source of the noise located?
Yes REPAIR or REPLACE any loose or broken component or fastener as necessary.
No GO to D3

D3 CHECK THE SUSPECT SPEAKER FOR WATER INTRUSION
  • Inspect for watermarks.
  • Check the following speaker components:
    • Cone
    • Magnet
    • Basket

Are any watermarks present on the speaker?
Yes VERIFY the water shield is in the correct location, REPAIR or REPLACE any trim, door or speaker seal as required. DRY the speaker in question. TEST the system for normal operation.
No GO to D4

D4 ISOLATE THE SUSPECT SPEAKER TO VERIFY NOISE
  • Remove the suspect speaker from its location and leave the speaker connected to the harness.
  • Hold the speaker away from any trim panel and make sure the speaker is isolated from contact.
  • Operate the audio system in USB mode using the downloaded audio files.

Is the noise still present in the suspect speaker?
Yes INSTALL a new speaker for the one in question.
No LOCATE the source of the noise and REPAIR as necessary.

PINPOINT TEST E: THE SPEED COMPENSATED VOLUME DOES NOT OPERATE CORRECTLY

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Possible Sources

  • Speed compensated volume setting
  • Network communication concern
  • Module configuration
  • ACM
  • DSP
E1 CHECK THE SPEED COMPENSATED VOLUME SETTING

NOTE: Refer to the Owner Literature to access the speed compensated volume settings.

  • Turn the speed compensated volume off.
  • Operate the audio system in AM / FM mode.
  • Drive the vehicle at various speeds and observe the speaker volume.
  • Set the speed compensated volume to maximum compensation.
  • Drive the vehicle at various speeds and observe the speaker volume.

Does the volume remain constant with the speed compensated volume turned off, and increase and decrease with vehicle speed with the speed compensated volume set to maximum?
Yes The system is operating correctly at this time. INFORM the vehicle owner in the correct usage of the speed compensated volume feature.
No GO to E2

E2 CHECK FOR COMMUNICATION DIAGNOSTIC TROUBLE CODES (DTCS)
  • For vehicles equipped with the 11 speaker system, carry out the ACM self-test.
  • For vehicles equipped with the 13 or 19 speaker system, carry out the DSP self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC chart in this section.
No GO to E3

E3 CARRY OUT PMI (PROGRAMMABLE MODULE INSTALLATION) FOR THE SUSPECT MODULE
  • For vehicles equipped with the 11 speaker system, carry out the PMI for the ACM .
  • For vehicles equipped with the 13 or 19 speaker system, carry out the PMI for the DSP .
  • Check the operation of the speed compensated volume feature.

Does the speed compensated volume feature operate?
Yes The repair is complete.
No For vehicles equipped with the 11 speaker system, GO to E5
For vehicles equipped with the 13 or 19 speaker system, GO to E4

E4 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the DSP connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

E5 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST F: ONE OR MORE SPEAKER IS INOPERATIVE - ACM (AUDIO FRONT CONTROL MODULE) CONTROLLED 11 SPEAKER SYSTEM

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM B1A01:01 Speaker #1: General Electrical Failure Sets when the ACM detects a failure from the left front door woofer speaker circuits.
ACM B1A01:11 Speaker #1: Circuit Short To Ground Sets when the ACM detects a short to ground from the left front door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A01:12 Speaker #1: Circuit Short To Battery Sets when the ACM detects a short to voltage from the left front door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A01:13 Speaker #1: Circuit Open Sets when the ACM detects an open from the left front door woofer speaker circuits.
ACM B1A02:01 Speaker #2: General Electrical Failure Sets when the ACM detects a failure from the right front door woofer speaker circuits.
ACM B1A02:11 Speaker #2: Circuit Short To Ground Sets when the ACM detects a short to ground from the right front door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A02:12 Speaker #2: Circuit Short To Battery Sets when the ACM detects a short to voltage from the right front door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A02:13 Speaker #2: Circuit Open Sets when the ACM detects an open from the right front door woofer speaker circuits.
ACM B1A03:01 Speaker #3: General Electrical Failure Sets when the ACM detects a failure from the right rear door woofer speaker circuits.
ACM B1A03:11 Speaker #3: Circuit Short To Ground Sets when the ACM detects a short to ground from the right rear door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A03:12 Speaker #3: Circuit Short To Battery Sets when the ACM detects a short to voltage from the right rear door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A03:13 Speaker #3: Circuit Open Sets when the ACM detects an open from the right rear door woofer speaker circuits.
ACM B1A04:01 Speaker #4: General Electrical Failure Sets when the ACM detects a failure from the left rear door woofer speaker circuits.
ACM B1A04:11 Speaker #4: Circuit Short To Ground Sets when the ACM detects a short to ground from the left rear door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A04:12 Speaker #4: Circuit Short To Battery Sets when the ACM detects a short to voltage from the left rear door woofer speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A04:13 Speaker #4: Circuit Open Sets when the ACM detects an open from the left rear door woofer speaker circuits.
ACM B1A06:01 Speaker #6: General Electrical Failure Sets when the ACM detects a failure from the instrument panel center speaker circuits.
ACM B1A06:11 Speaker #6: Circuit Short To Ground Sets when the ACM detects a short to ground from the instrument panel center speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A06:12 Speaker #6: Circuit Short To Battery Sets when the ACM detects a short to voltage from the instrument panel center speaker circuits. The speaker output is disabled when this DTC is set.
ACM B1A06:13 Speaker #6: Circuit Open Sets when the ACM detects an open from the instrument panel center speaker circuits.

Possible Sources

  • Wiring, terminals, or connectors
  • Speaker
  • ACM

NOTE: For a concern with a tweeter speaker, the corresponding woofer speaker must be disconnected for correct test results.

F1 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the suspect speaker.
  • Disconnect ACM C240A .
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2356-1   Ground
      C2356-2   Ground

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   Ground
      C513-3   Ground

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   Ground
      C613-3   Ground

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   Ground
      C523-4   Ground

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   Ground
      C612-4   Ground

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   Ground
      C730-3   Ground

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   Ground
      C830-3   Ground

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   Ground
      C702-4   Ground

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   Ground
      C802-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to F2
No REPAIR the circuit in question.

F2 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2356-1   Ground
      C2356-2   Ground

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   Ground
      C513-3   Ground

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   Ground
      C613-3   Ground

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   Ground
      C523-4   Ground

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   Ground
      C612-4   Ground

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   Ground
      C730-3   Ground

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   Ground
      C830-3   Ground

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   Ground
      C702-4   Ground

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   Ground
      C802-4   Ground

Is any voltage present?
Yes REPAIR the circuit in question.
No GO to F3

F3 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TOGETHER
  • Ignition OFF.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2356-1   C2356-2

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   C513-3

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   C613-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C523-4

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C612-4

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   C730-3

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   C830-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C702-4

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C802-4

Are the resistances greater than 10,000 ohms?
Yes GO to F4
No REPAIR the circuits.

F4 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR AN OPEN
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2356-1   C240A-20
      C2356-2   C240A-8

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   C523-2
      C513-3   C523-3

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   C612-2
      C613-3   C612-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C240A-22
      C523-4   C240A-10

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C240A-23
      C612-4   C240A-11

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   C702-2
      C730-3   C702-3

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   C802-2
      C830-3   C802-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C240A-21
      C702-4   C240A-9

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C240A-24
      C802-4   C240A-12

Are the resistances less than 3 ohms?
Yes GO to F5
No REPAIR the circuit in question.

F5 CHECK THE AUDIO SIGNAL TO THE SUSPECT SPEAKER
  • Connect ACM C240A .
  • Ignition ON.
  • NOTE: For a door tweeter speaker concern, make sure the corresponding door woofer speaker is connected. Operate the audio system in AM / FM mode.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2356-1   C2356-2

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   C513-3

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   C613-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C523-4

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C612-4

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   C730-3

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   C830-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C702-4

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C802-4

Is a fluctuating AC voltage present?
Yes INSTALL a new speaker for the one in question.
No GO to F6

F6 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST G: THE SUBWOOFER SPEAKER IS INOPERATIVE

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM B1A05:02 Speaker #5: General Signal Failure Sets when the ACM detects a failure from the subwoofer speaker circuits.

Possible Sources

  • Wiring, terminals, or connectors
  • Subwoofer amplifier and peaker
  • BCM
  • ACM

Visual Inspection and Pre-checks

  • Check the BCM fuse 25 (20A) and make sure it is OK.
G1 CHECK FOR VOLTAGE TO THE SUBWOOFER AMPLIFIER
  • Ignition OFF.
  • Disconnect Subwoofer Amplifier C4601 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-14   Ground

Is the voltage greater than 11 volts?
Yes GO to G3
No VERIFY the BCM fuse 25 (20A) is OK. If OK, GO to G2
If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

G2 CHECK THE SUBWOOFER AMPLIFIER VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Disconnect BCM C2280F .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-14   C2280F-20

Is the resistance less than 3 ohms?
Yes GO to G13
No REPAIR the circuit.

G3 CHECK THE SUBWOOFER AMPLIFIER GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect Subwoofer Amplifier C4601 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-14   C4601-11

Is the voltage greater than 11 volts?
Yes GO to G4
No REPAIR the circuit.

G4 CHECK THE SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR CORRECT VOLTAGE
  • Ignition ON.
  • Turn the audio system on.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-1   Ground

Is the voltage between 3.5 and 7 volts?
Yes GO to G8
No GO to G5

G5 CHECK THE SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect ACM C240B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to G6
No REPAIR the circuit.

G6 CHECK THE SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to G7

G7 CHECK THE SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-1   C240B-18

Is the resistance less than 3 ohms?
Yes GO to G14
No REPAIR the circuit.

G8 CHECK THE SUBWOOFER AMPLIFIER AUDIO INPUT CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect ACM C240B .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-5   Ground
      C4601-6   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to G9
No REPAIR the circuit in question.

G9 CHECK THE SUBWOOFER AMPLIFIER AUDIO INPUT CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-5   Ground
      C4601-6   Ground

Is any voltage present?
Yes REPAIR the circuit in question.
No GO to G10

G10 CHECK THE SUBWOOFER AMPLIFIER AUDIO INPUT CIRCUITS FOR A SHORT TOGETHER
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-5   C4601-6

Are the resistances greater than 10,000 ohms?
Yes GO to G11
No REPAIR the circuits.

G11 CHECK THE SUBWOOFER AMPLIFIER AUDIO INPUT CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-5   C240B-4
      C4601-6   C240B-17

Are the resistances less than 3 ohms?
Yes GO to G12
No REPAIR the circuit in question.

G12 CHECK THE AUDIO SIGNAL TO THE SUBWOOFER AMPLIFIER
  • Connect ACM C240B .
  • Ignition ON.
  • Operate the audio system in AM / FM mode.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4601-5   C4601-6

Is a fluctuating AC voltage present?
Yes INSTALL a new subwoofer amplifier and speaker.
REFER to: Subwoofer and Amplifier Unit (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
No GO to G14

G13 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • 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 BCM .
REFER to: Body Control Module (BCM) (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.

G14 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST H: ONE OR MORE SPEAKER IS INOPERATIVE - DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) CONTROLLED 13 SPEAKER SYSTEM

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSP B1A01:01 Speaker #1: General Electrical Failure Sets when the DSP detects a failure from the subwoofer channel 1 speaker circuits.
DSP B1A01:11 Speaker #1: Circuit Short To Ground Sets when the DSP detects a short to ground from the channel 1 speaker circuits.
DSP B1A01:12 Speaker #1: Circuit Short To Battery Sets when the DSP detects a short to voltage from the channel 1 speaker circuits.
DSP B1A01:13 Speaker #1: Circuit Open Sets when the DSP detects an open from the subwoofer channel 1 speaker circuits.
DSP B1A02:01 Speaker #2: General Electrical Failure Sets when the DSP detects a failure from the left front door midrange speaker circuits.
DSP B1A02:11 Speaker #2: Circuit Short To Ground Sets when the DSP detects a short to ground from the left front door midrange speaker circuits.
DSP B1A02:12 Speaker #2: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left front door midrange speaker circuits.
DSP B1A02:13 Speaker #2: Circuit Open Sets when the DSP detects an open from the left front door midrange speaker circuits.
DSP B1A03:01 Speaker #3: General Electrical Failure Sets when the DSP detects a failure from the right front door midrange speaker circuits.
DSP B1A03:11 Speaker #3: Circuit Short To Ground Sets when the DSP detects a short to ground from the right front door midrange speaker circuits.
DSP B1A03:12 Speaker #3: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right front door midrange speaker circuits.
DSP B1A03:13 Speaker #3: Circuit Open Sets when the DSP detects an open from the right front door midrange speaker circuits.
DSP B1A04:01 Speaker #4: General Electrical Failure Sets when the DSP detects a failure from the instrument panel center channel 1 speaker circuits.
DSP B1A04:11 Speaker #4: Circuit Short To Ground Sets when the DSP detects a short to ground from the instrument panel center channel 1 speaker circuits.
DSP B1A04:12 Speaker #4: Circuit Short To Battery Sets when the DSP detects a short to voltage from the instrument panel center channel 1 speaker circuits.
DSP B1A04:13 Speaker #4: Circuit Open Sets when the DSP detects an open from the instrument panel center channel 1 speaker circuits.
DSP B1A05:01 Speaker #5: General Electrical Failure Sets when the DSP detects a failure from the left front door woofer speaker circuits.
DSP B1A05:11 Speaker #5: Circuit Short To Ground Sets when the DSP detects a short to ground from the left front door woofer speaker circuits.
DSP B1A05:12 Speaker #5: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left front door woofer speaker circuits.
DSP B1A05:13 Speaker #5: Circuit Open Sets when the DSP detects an open from the left front door woofer speaker circuits.
DSP B1A06:01 Speaker #6: General Electrical Failure Sets when the DSP detects a failure from the left front door tweeter speaker circuits.
DSP B1A06:11 Speaker #6: Circuit Short To Ground Sets when the DSP detects a short to ground from the left front door tweeter speaker circuits.
DSP B1A06:12 Speaker #6: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left front door tweeter speaker circuits.
DSP B1A06:13 Speaker #6: Circuit Open Sets when the DSP detects an open from the left front door tweeter speaker circuits.
DSP B1A07:01 Speaker #7: General Electrical Failure Sets when the DSP detects a failure from the right front door tweeter speaker circuits.
DSP B1A07:11 Speaker #7: Circuit Short To Ground Sets when the DSP detects a short to ground from the right front door tweeter speaker circuits.
DSP B1A07:12 Speaker #7: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right front door tweeter speaker circuits.
DSP B1A07:13 Speaker #7: Circuit Open Sets when the DSP detects an open from the right front door tweeter speaker circuits.
DSP B1A08:01 Speaker #8: General Electrical Failure Sets when the DSP detects a failure from the right front door woofer speaker circuits.
DSP B1A08:11 Speaker #8: Circuit Short To Ground Sets when the DSP detects a short to ground from the right front door woofer speaker circuits.
DSP B1A08:12 Speaker #8: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right front door woofer speaker circuits.
DSP B1A08:13 Speaker #8: Circuit Open Sets when the DSP detects an open from the right front door woofer speaker circuits.
DSP B1A09:01 Speaker #9: General Electrical Failure Sets when the DSP detects a failure from the left rear door woofer and tweeter speaker.
DSP B1A09:11 Speaker #9: Circuit Short To Ground Sets when the DSP detects a short to ground from the left rear door woofer and tweeter speaker circuits.
DSP B1A09:12 Speaker #9: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left rear door woofer and tweeter speaker circuits.
DSP B1A09:13 Speaker #9: Circuit Open Sets when the DSP detects an open from the right left rear door woofer and tweeter speaker circuits.
DSP B1A10:01 Speaker #10: General Electrical Failure Sets when the DSP detects a failure from the right rear door woofer and tweeter speaker circuits.
DSP B1A10:11 Speaker #10: Circuit Short To Ground Sets when the DSP detects a short to ground from the right rear door woofer and tweeter speaker circuits.
DSP B1A10:12 Speaker #10: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right rear door woofer and tweeter speaker circuits.
DSP B1A10:13 Speaker #10: Circuit Open Sets when the DSP detects an open from the right rear door woofer and tweeter speaker circuits.
DSP B1A11:01 Speaker #11: General Electrical Failure Sets when the DSP detects a failure from the instrument panel center channel 2 speaker circuits.
DSP B1A11:11 Speaker #11: Circuit Short To Ground Sets when the DSP detects a short to ground from the instrument panel center channel 2 speaker circuits.
DSP B1A11:12 Speaker #11: Circuit Short To Battery Sets when the DSP detects a short to voltage from the instrument panel center channel 2 speaker circuits.
DSP B1A11:13 Speaker #11: Circuit Open Sets when the DSP detects an open from the instrument panel center channel 2 speaker circuits.
DSP B1A12:01 Speaker #12: General Electrical Failure Sets when the DSP detects a failure from the subwoofer channel 2 speaker circuits.
DSP B1A12:11 Speaker #12: Circuit Short To Ground Sets when the DSP detects a short to ground from the subwoofer channel 2 speaker circuits.
DSP B1A12:12 Speaker #12: Circuit Short To Battery Sets when the DSP detects a short to voltage from the subwoofer channel 2 speaker circuits.
DSP B1A12:13 Speaker #12: Circuit Open Sets when the DSP detects an open from the subwoofer channel 2 speaker circuits.

Possible Sources

  • Wiring, terminals, or connectors
  • Speaker
  • DSP

NOTE: The rear door woofer and corresponding tweeter speaker share the same circuitry. If a concern exists with both speakers, retest the system with the rear door tweeter speaker disconnected to determine if the tweeter speaker is the cause of the concern.

H1 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TO GROUND

NOTE: If a concern exists with both speakers in a rear door, both speakers must be disconnected for correct test results.

  • Ignition OFF.
  • Disconnect the suspect speaker.
  • Disconnect DSP C4326A and C4326B .
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   Ground
      C2359-2   Ground
      C2359-3   Ground
      C2359-4   Ground

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   Ground
      C513-3   Ground

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   Ground
      C613-3   Ground

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   Ground
      C5002-3   Ground

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   Ground
      C6002-3   Ground

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   Ground
      C523-4   Ground

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   Ground
      C612-4   Ground

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   Ground
      C730-3   Ground

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   Ground
      C830-3   Ground

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   Ground
      C702-4   Ground

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   Ground
      C802-4   Ground

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   Ground
      C4436-2   Ground
      C4436-3   Ground
      C4436-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to H2
No REPAIR the circuits in question.

H2 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   Ground
      C2359-2   Ground
      C2359-3   Ground
      C2359-4   Ground

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   Ground
      C513-3   Ground

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   Ground
      C613-3   Ground

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   Ground
      C5002-3   Ground

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   Ground
      C6002-3   Ground

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   Ground
      C523-4   Ground

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   Ground
      C612-4   Ground

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   Ground
      C730-3   Ground

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   Ground
      C830-3   Ground

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   Ground
      C702-4   Ground

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   Ground
      C802-4   Ground

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   Ground
      C4436-2   Ground
      C4436-3   Ground
      C4436-4   Ground

Is any voltage present?
Yes REPAIR the circuits in question.
No GO to H3

H3 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TOGETHER
  • Ignition OFF.
  • NOTE: For a rear door woofer speaker and tweeter speaker concern, make sure the both speakers are disconnected. For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   C2359-2
      C2359-3   C2359-4

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   C513-3

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   C613-3

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   C5002-3

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   C6002-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C523-4

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C612-4

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   C730-3

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   C830-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C702-4

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C802-4

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   C4436-2
      C4436-3   C4436-4

Are the resistances greater than 10,000 ohms?
Yes GO to H4
No REPAIR the circuits in question.

H4 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR AN OPEN
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   C4326B-11
      C2359-2   C4326B-1
      C2359-3   C4326B-19
      C2359-4   C4326B-9

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   C4326B-14
      C513-3   C4326B-4

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   C4326B-15
      C613-3   C4326B-5

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   C4326B-19
      C5002-3   C4326B-9

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   C4326B-12
      C6002-3   C4326B-2

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C4326B-13
      C523-4   C4326B-3

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C4326B-16
      C612-4   C4326B-6

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   C4326B-17
      C730-3   C4326B-7

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   C4326B-18
      C830-3   C4326B-8

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C4326B-17
      C702-4   C4326B-7

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C4326B-18
      C802-4   C4326B-8

    Click to display connectors

      Subwoofer Speaker Channel 1


    Positive Lead Measurement / Action Negative Lead
      C4436-1   C4326A-20
      C4436-2   C4326A-10

    Click to display connectors

      Subwoofer Speaker Channel 2


    Positive Lead Measurement / Action Negative Lead
      C4436-3   C4326B-20
      C4436-4   C4326B-10

Are the resistances less than 3 ohms?
Yes GO to H5
No REPAIR the circuit in question.

H5 CHECK THE AUDIO SIGNAL TO THE SUSPECT SPEAKER
  • Connect DSP C4326A and C4326B .
  • Ignition ON.
  • Operate the audio system in AM / FM mode.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   C2359-2
      C2359-3   C2359-4

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C513-1   C513-3

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C613-1   C613-3

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   C5002-3

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   C6002-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C523-4

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C612-4

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C730-1   C730-3

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C830-1   C830-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C702-4

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C802-4

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   C4436-2
      C4436-3   C4436-4

Is a fluctuating AC voltage present?
Yes INSTALL a new speaker for the one in question.
No GO to H6

H6 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the DSP connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST I: ONE OR MORE SPEAKER IS INOPERATIVE - DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) CONTROLLED 19 SPEAKER SYSTEM

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSP B128A:01 Speaker #13: General Electrical Failure Sets when the DSP detects a failure from the left rear door midrange speaker circuits.
DSP B128A:11 Speaker #13: Circuit Short To Ground Sets when the DSP detects a short to ground from the left rear door midrange speaker circuits.
DSP B128A:12 Speaker #13: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left rear door midrange speaker circuits.
DSP B128A:13 Speaker #13: Circuit Open Sets when the DSP detects an open from the left rear door midrange speaker circuits.
DSP B128B:01 Speaker #14: General Electrical Failure Sets when the DSP detects a failure from the right rear door tweeter speaker circuits.
DSP B128B:11 Speaker #14: Circuit Short To Ground Sets when the DSP detects a short to ground from the right rear door tweeter speaker circuits.
DSP B128B:12 Speaker #14: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right rear door tweeter speaker circuits.
DSP B128B:13 Speaker #14: Circuit Open Sets when the DSP detects an open from the right rear door tweeter speaker circuits.
DSP B128C:01 Speaker #15: General Electrical Failure Sets when the DSP detects a failure from the left front door tweeter speaker circuits.
DSP B128C:11 Speaker #15: Circuit Short To Ground Sets when the DSP detects a short to ground from the left front door tweeter speaker circuits.
DSP B128C:12 Speaker #15: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left front door tweeter speaker circuits.
DSP B128C:13 Speaker #15: Circuit Open Sets when the DSP detects an open from the left front door tweeter speaker circuits.
DSP B128D:01 Speaker #16: General Electrical Failure Sets when the DSP detects a failure from the right front door tweeter speaker circuits.
DSP B128D:11 Speaker #16: Circuit Short To Ground Sets when the DSP detects a short to ground from the right front door tweeter speaker circuits.
DSP B128D:12 Speaker #16: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right front door tweeter speaker circuits.
DSP B128D:13 Speaker #16: Circuit Open Sets when the DSP detects an open from the right front door tweeter speaker circuits.
DSP B128E:01 Speaker #17: General Electrical Failure Sets when the DSP detects a failure from the left rear door tweeter speaker circuits.
DSP B128E:11 Speaker #17: Circuit Short To Ground Sets when the DSP detects a short to ground from the left rear door tweeter speaker circuits.
DSP B128E:12 Speaker #17: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left rear door tweeter speaker circuits.
DSP B128E:13 Speaker #17: Circuit Open Sets when the DSP detects an open from the left rear door tweeter speaker circuits.
DSP B128F:01 Speaker #18: General Electrical Failure Sets when the DSP detects a failure from the left D-pillar tweeter speaker circuits.
DSP B128F:11 Speaker #18: Circuit Short To Ground Sets when the DSP detects a short to ground from the left D-pillar tweeter speaker circuits.
DSP B128F:12 Speaker #18: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left D-pillar tweeter speaker circuits.
DSP B128F:13 Speaker #18: Circuit Open Sets when the DSP detects an open from the left D-pillar tweeter speaker circuits.
DSP B1290:01 Speaker #19: General Electrical Failure Sets when the DSP detects a failure from the right D-pillar tweeter speaker circuits.
DSP B1290:11 Speaker #19: Circuit Short To Ground Sets when the DSP detects a short to ground from the right D-pillar tweeter speaker circuits.
DSP B1290:12 Speaker #19: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right D-pillar tweeter speaker circuits.
DSP B1290:13 Speaker #19: Circuit Open Sets when the DSP detects an open from the right D-pillar tweeter speaker circuits.
DSP B1291:01 Speaker #20: General Electrical Failure Sets when the DSP detects a failure from the instrument panel center tweeter speaker circuits.
DSP B1291:11 Speaker #20: Circuit Short To Ground Sets when the DSP detects a short to ground from the instrument panel center tweeter speaker circuits.
DSP B1291:12 Speaker #20: Circuit Short To Battery Sets when the DSP detects a short to voltage from the instrument panel center tweeter speaker circuits.
DSP B1291:13 Speaker #20: Circuit Open Sets when the DSP detects an open from the instrument panel center tweeter speaker circuits.
DSP B1A01:01 Speaker #1: General Electrical Failure Sets when the DSP detects a failure from the subwoofer channel 1 speaker circuits.
DSP B1A01:11 Speaker #1: Circuit Short To Ground Sets when the DSP detects a short to ground from the subwoofer channel 1 speaker circuits.
DSP B1A01:12 Speaker #1: Circuit Short To Battery Sets when the DSP detects a short to voltage from the subwoofer channel 1 speaker circuits.
DSP B1A01:13 Speaker #1: Circuit Open Sets when the DSP detects an open from the subwoofer channel 1 speaker circuits.
DSP B1A02:01 Speaker #2: General Electrical Failure Sets when the DSP detects a failure from the left D-pillar midrange speaker circuits.
DSP B1A02:11 Speaker #2: Circuit Short To Ground Sets when the DSP detects a short to ground from the left D-pillar midrange speaker circuits.
DSP B1A02:12 Speaker #2: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left D-pillar midrange speaker circuits.
DSP B1A02:13 Speaker #2: Circuit Open Sets when the DSP detects an open from the left D-pillar midrange speaker circuits.
DSP B1A03:01 Speaker #3: General Electrical Failure Sets when the DSP detects a failure from the right front door woofer speaker circuits.
DSP B1A03:11 Speaker #3: Circuit Short To Ground Sets when the DSP detects a short to ground from the right front door woofer speaker circuits.
DSP B1A03:12 Speaker #3: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right front door woofer speaker circuits.
DSP B1A03:13 Speaker #3: Circuit Open Sets when the DSP detects an open from the right front door woofer speaker circuits.
DSP B1A04:01 Speaker #4: General Electrical Failure Sets when the DSP detects a failure from the left front door midrange speaker circuits.
DSP B1A04:11 Speaker #4: Circuit Short To Ground Sets when the DSP detects a short to ground from the left front door midrange speaker circuits.
DSP B1A04:12 Speaker #4: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left front door midrange speaker circuits.
DSP B1A04:13 Speaker #4: Circuit Open Sets when the DSP detects an open from the left front door midrange speaker circuits.
DSP B1A05:01 Speaker #5: General Electrical Failure Sets when the DSP detects a failure from the left front door woofer speaker circuits.
DSP B1A05:11 Speaker #5: Circuit Short To Ground Sets when the DSP detects a short to ground from the left front door woofer speaker circuits.
DSP B1A05:12 Speaker #5: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left front door woofer speaker circuits.
DSP B1A05:13 Speaker #5: Circuit Open Sets when the DSP detects an open from the left front door woofer speaker circuits.
DSP B1A06:01 Speaker #6: General Electrical Failure Sets when the DSP detects a failure from the subwoofer channel 2 speaker circuits.
DSP B1A06:11 Speaker #6: Circuit Short To Ground Sets when the DSP detects a short to ground from the subwoofer channel 2 speaker circuits.
DSP B1A06:12 Speaker #6: Circuit Short To Battery Sets when the DSP detects a short to voltage from the subwoofer channel 2 speaker circuits.
DSP B1A06:13 Speaker #6: Circuit Open Sets when the DSP detects an open from the subwoofer channel 2 speaker circuits.
DSP B1A07:01 Speaker #7: General Electrical Failure Sets when the DSP detects a failure from the right front door midrange speaker circuits.
DSP B1A07:11 Speaker #7: Circuit Short To Ground Sets when the DSP detects a short to ground from the right front door midrange speaker circuits.
DSP B1A07:12 Speaker #7: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right front door midrange speaker circuits.
DSP B1A07:13 Speaker #7: Circuit Open Sets when the DSP detects an open from the right front door midrange speaker circuits.
DSP B1A08:01 Speaker #8: General Electrical Failure Sets when the DSP detects a failure from the instrument panel center midrange speaker circuits.
DSP B1A08:11 Speaker #8: Circuit Short To Ground Sets when the DSP detects a short to ground from the instrument panel center midrange speaker circuits.
DSP B1A08:12 Speaker #8: Circuit Short To Battery Sets when the DSP detects a short to voltage from the instrument panel center midrange speaker circuits.
DSP B1A08:13 Speaker #8: Circuit Open Sets when the DSP detects an open from the instrument panel center midrange speaker circuits.
DSP B1A09:01 Speaker #9: General Electrical Failure Sets when the DSP detects a failure from the left rear door woofer speaker circuits.
DSP B1A09:11 Speaker #9: Circuit Short To Ground Sets when the DSP detects a short to ground from the left rear door woofer speaker circuits.
DSP B1A09:12 Speaker #9: Circuit Short To Battery Sets when the DSP detects a short to voltage from the left rear door woofer speaker circuits.
DSP B1A09:13 Speaker #9: Circuit Open Sets when the DSP detects an open from the left rear door woofer speaker circuits.
DSP B1A10:01 Speaker #10: General Electrical Failure Sets when the DSP detects a failure from the right D-pillar midrange speaker circuits.
DSP B1A10:11 Speaker #10: Circuit Short To Ground Sets when the DSP detects a short to ground from the right D-pillar midrange speaker circuits.
DSP B1A10:12 Speaker #10: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right D-pillar midrange speaker circuits.
DSP B1A10:13 Speaker #10: Circuit Open Sets when the DSP detects an open from the right D-pillar midrange speaker circuits.
DSP B1A11:01 Speaker #11: General Electrical Failure Sets when the DSP detects a failure from the right rear door midrange speaker circuits.
DSP B1A11:11 Speaker #11: Circuit Short To Ground Sets when the DSP detects a short to ground from the right rear door midrange speaker circuits.
DSP B1A11:12 Speaker #11: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right rear door midrange speaker circuits.
DSP B1A11:13 Speaker #11: Circuit Open Sets when the DSP detects an open from the right rear door midrange speaker circuits.
DSP B1A12:01 Speaker #12: General Electrical Failure Sets when the DSP detects a failure from the right rear door woofer speaker circuits.
DSP B1A12:11 Speaker #12: Circuit Short To Ground Sets when the DSP detects a short to ground from the right rear door woofer speaker circuits.
DSP B1A12:12 Speaker #12: Circuit Short To Battery Sets when the DSP detects a short to voltage from the right rear door woofer speaker circuits.
DSP B1A12:13 Speaker #12: Circuit Open Sets when the DSP detects an open from the right rear door woofer speaker circuits.

Possible Sources

  • Wiring, terminals, or connectors
  • Speaker
  • DSP
I1 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the suspect speaker.
  • Disconnect DSP C4452A and C4452B .
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   Ground
      C2359-2   Ground
      C2359-3   Ground
      C2359-4   Ground

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C569-1   Ground
      C569-2   Ground

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C645-1   Ground
      C645-2   Ground

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   Ground
      C5002-3   Ground

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   Ground
      C6002-3   Ground

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   Ground
      C523-4   Ground

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   Ground
      C612-4   Ground

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C744-1   Ground
      C744-2   Ground

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C844-1   Ground
      C844-2   Ground

    Click to display connectors

      Left Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C751-1   Ground
      C751-3   Ground

    Click to display connectors

      Right Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C851-1   Ground
      C851-3   Ground

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   Ground
      C702-4   Ground

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   Ground
      C802-4   Ground

    Click to display connectors

      Left D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C485-1   Ground
      C485-2   Ground
      C485-3   Ground
      C485-4   Ground

    Click to display connectors

      Right D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C484-1   Ground
      C484-2   Ground
      C484-3   Ground
      C484-4   Ground

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   Ground
      C4436-2   Ground
      C4436-3   Ground
      C4436-4   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to I2
No REPAIR the circuits in question.

I2 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   Ground
      C2359-2   Ground
      C2359-3   Ground
      C2359-4   Ground

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C569-1   Ground
      C569-2   Ground

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C645-1   Ground
      C645-2   Ground

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   Ground
      C5002-3   Ground

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   Ground
      C6002-3   Ground

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   Ground
      C523-4   Ground

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   Ground
      C612-4   Ground

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C744-1   Ground
      C744-2   Ground

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C844-1   Ground
      C844-2   Ground

    Click to display connectors

      Left Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C751-1   Ground
      C751-3   Ground

    Click to display connectors

      Right Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C851-1   Ground
      C851-3   Ground

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   Ground
      C702-4   Ground

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   Ground
      C802-4   Ground

    Click to display connectors

      Left D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C485-1   Ground
      C485-2   Ground
      C485-3   Ground
      C485-4   Ground

    Click to display connectors

      Right D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C484-1   Ground
      C484-2   Ground
      C484-3   Ground
      C484-4   Ground

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   Ground
      C4436-2   Ground
      C4436-3   Ground
      C4436-4   Ground

Is any voltage present?
Yes REPAIR the circuits in question.
No GO to I3

I3 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR A SHORT TOGETHER
  • Ignition OFF.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   C2359-2
      C2359-3   C2359-4

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C569-1   C569-2

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C645-1   C645-2

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   C5002-3

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   C6002-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C523-4

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C612-4

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C744-1   C744-2

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C844-1   C844-2

    Click to display connectors

      Left Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C751-1   C751-3

    Click to display connectors

      Right Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C851-1   C851-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C702-4

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C802-4

    Click to display connectors

      Left D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C485-1   C485-2
      C485-3   C485-4

    Click to display connectors

      Right D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C484-1   C484-2
      C484-3   C484-4

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   C4436-2
      C4436-3   C4436-4

Are the resistances greater than 10,000 ohms?
Yes GO to I4
No REPAIR the circuits in question.

I4 CHECK THE AUDIO CIRCUITS TO THE SPEAKER FOR AN OPEN
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker - Midrange


    Positive Lead Measurement / Action Negative Lead
      C2359-1   C4452B-19
      C2359-2   C4452B-9

    Click to display connectors

      Instrument Panel Center Speaker - Tweeter


    Positive Lead Measurement / Action Negative Lead
      C2359-3   C4452A-20
      C2359-4   C4452A-10

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C569-1   C4452A-15
      C569-2   C4452A-5

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C645-1   C4452A-16
      C645-2   C4452A-6

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   C4452B-12
      C5002-3   C4452B-2

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   C4452B-16
      C6002-3   C4452B-6

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C4452B-11
      C523-4   C4452B-1

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C4452B-13
      C612-4   C4452B-3

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C744-1   C4452A-17
      C744-2   C4452A-7

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C844-1   C4452A-14
      C844-2   C4452A-4

    Click to display connectors

      Left Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C751-1   C4452A-13
      C751-3   C4452A-3

    Click to display connectors

      Right Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C851-1   C4452A-11
      C851-3   C4452A-1

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C4452B-18
      C702-4   C4452B-8

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C4452A-12
      C802-4   C4452A-2

    Click to display connectors

      Left D-Pillar Speaker - Midrange Circuits


    Positive Lead Measurement / Action Negative Lead
      C485-1   C4452B-14
      C485-2   C4452B-4

    Click to display connectors

      Left D-Pillar Speaker - Tweeter Circuits


    Positive Lead Measurement / Action Negative Lead
      C485-3   C4452A-18
      C485-4   C4452A-8

    Click to display connectors

      Right D-Pillar Speaker - Midrange Circuits


    Positive Lead Measurement / Action Negative Lead
      C484-1   C4452B-20
      C484-2   C4452B-10

    Click to display connectors

      Right D-Pillar Speaker - Tweeter Circuits


    Positive Lead Measurement / Action Negative Lead
      C484-3   C4452A-19
      C484-4   C4452A-9

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   C4452B-15
      C4436-2   C4452B-5
      C4436-3   C4452B-17
      C4436-4   C4452B-7

Are the resistances less than 3 ohms?
Yes GO to I5
No REPAIR the circuit in question.

I5 CHECK THE AUDIO SIGNAL TO THE SUSPECT SPEAKER
  • Connect DSP C4452A and C4452B .
  • Ignition ON.
  • Operate the audio system in AM / FM mode.
  • For the suspect speaker, measure:
    Click to display connectors

      Instrument Panel Center Speaker


    Positive Lead Measurement / Action Negative Lead
      C2359-1   C2359-2
      C2359-3   C2359-4

    Click to display connectors

      Left Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C569-1   C569-2

    Click to display connectors

      Right Front Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C645-1   C645-2

    Click to display connectors

      Left Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C5002-1   C5002-3

    Click to display connectors

      Right Front Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C6002-1   C6002-3

    Click to display connectors

      Left Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C523-1   C523-4

    Click to display connectors

      Right Front Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C612-1   C612-4

    Click to display connectors

      Left Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C744-1   C744-2

    Click to display connectors

      Right Rear Door Tweeter Speaker


    Positive Lead Measurement / Action Negative Lead
      C844-1   C844-2

    Click to display connectors

      Left Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C751-1   C751-3

    Click to display connectors

      Right Rear Door Midrange Speaker


    Positive Lead Measurement / Action Negative Lead
      C851-1   C851-3

    Click to display connectors

      Left Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C702-1   C702-4

    Click to display connectors

      Right Rear Door Woofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C802-1   C802-4

    Click to display connectors

      Left D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C485-1   C485-2
      C485-3   C485-4

    Click to display connectors

      Right D-Pillar Speaker


    Positive Lead Measurement / Action Negative Lead
      C484-1   C484-2
      C484-3   C484-4

    Click to display connectors

      Subwoofer Speaker


    Positive Lead Measurement / Action Negative Lead
      C4436-1   C4436-2
      C4436-3   C4436-4

Is a fluctuating AC voltage present?
Yes INSTALL a new speaker for the one in question.
No GO to I6

I6 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the DSP connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST J: THE AUDIO/SYNC SYSTEM DOES NOT OPERATE CORRECTLY FROM THE FCIMB (FRONT CONTROLS INTERFACE MODULE B)

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Possible Sources

  • Network communication concern
  • ACM concern
  • APIM concern
  • FCIMB
J1 VERIFY THE ACM (AUDIO FRONT CONTROL MODULE) , THE APIM (SYNC MODULE) AND THE FCIMB (FRONT CONTROLS INTERFACE MODULE B) PASS THE NETWORK TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the network test.

Does the ACM , the APIM and the FCIMB pass the network test?
Yes GO to J2
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

J2 CHECK FOR ACM (AUDIO FRONT CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the ACM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to J3

J3 CHECK FOR APIM (SYNC MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the APIM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Chart in this section.
No GO to J4

J4 CHECK FOR FCIMB (FRONT CONTROLS INTERFACE MODULE B) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the FCIMB self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the DTC Charts in this section.
No GO to J5

J5 CHECK FOR CORRECT FCIMB (FRONT CONTROLS INTERFACE MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the FCIMB connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the FCIMB connectors. Make sure they seat and latch correctly.
  • 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 FCIMB .
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.

PINPOINT TEST K: ONE OR MORE RADIO/SYNC STEERING WHEEL CONTROL BUTTON IS INOPERATIVE

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM B137F:09 Steering Wheel Left Switch Pack: Component Failures Sets when the SCCM detects the left steering wheel switch is active for more than 2 minutes.
SCCM B137F:11 Steering Wheel Left Switch Pack: Circuit Short To Ground Sets when the SCCM detects a short to ground from the left steering wheel switch input circuits.
SCCM B137F:17 Steering Wheel Left Switch Pack: Circuit Voltage Above Threshold Sets when the SCCM detects an open or short to voltage from the left steering wheel switch input circuits.
SCCM B1380:09 Steering Wheel Right Switch Pack: Component Failures Sets when the SCCM detects the right steering wheel switch is active for more than 2 minutes.
SCCM B1380:11 Steering Wheel Right Switch Pack: Circuit Short To Ground Sets when the SCCM detects a short to ground from the right steering wheel switch input circuits.
SCCM B1380:17 Steering Wheel Right Switch Pack: Circuit Voltage Above Threshold Sets when the SCCM detects an open or short to voltage from the right steering wheel switch input circuits.

Possible Sources

  • Wiring, terminals, or connectors
  • Steering wheel switch
  • Clockspring
  • Steering wheel
  • SCCM
K1 CHECK FOR VOLTAGE TO THE STEERING WHEEL SWITCH
  • Ignition OFF.
  • Remove the driver airbag.
    REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  • Disconnect Left Steering Wheel Switches C2998 and C2366 .
  • Disconnect Right Steering Wheel Switches C2999 and C2367 .
  • Ignition ON.
  • Measure:
    Click to display connectors

      Right Upper Steering Wheel Switch


    Positive Lead Measurement / Action Negative Lead
      C2999-2   C2999-3

    Click to display connectors

      Right Lower Steering Wheel Switch


    Positive Lead Measurement / Action Negative Lead
      C2367-2   C2367-4
      C2367-3   C2367-4
      C2367-5   C2367-4

    Click to display connectors

      Left Upper Steering Wheel Switch


    Positive Lead Measurement / Action Negative Lead
      C2998-2   C2998-3

    Click to display connectors

      Left Lower Steering Wheel Switch


    Positive Lead Measurement / Action Negative Lead
      C2366-2   C2366-3
      C2366-4   C2366-3
      C2366-5   C2366-3

Are the voltages approximately 5 volts?
Yes INSTALL a new steering wheel switch in question.
REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new opposing (opposite) steering wheel switch.
REFER to: Steering Wheel Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No GO to K2

K2 CHECK THE STEERING WHEEL HARNESS
  • Ignition OFF.
  • Disconnect Clockspring C218B .
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Upper Clockspring C218B, pin 14 (component side) Upper Clockspring C218B, pin 8 (component side)
    Upper Clockspring C218B, pin 15 (component side) Upper Clockspring C218B, pin 8 (component side)
    Upper Clockspring C218B, pin 6 (component side) Upper Clockspring C218B, pin 16 (component side)
    Upper Clockspring C218B, pin 7 (component side) Upper Clockspring C218B, pin 16 (component side)

Are the voltages approximately 5 volts?
Yes REPAIR the steering wheel harness (open or short is present) or INSTALL a new steering wheel as necessary.
REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).
No GO to K3

K3 CHECK THE CLOCKSPRING FOR AN OPEN
  • Ignition OFF.
  • Remove the clockspring.
    REFER to: Clockspring (501-20B Supplemental Restraint System, Removal and Installation).
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Upper Clockspring C218B, pin 14 (component side) Lower Clockspring C218G, pin 6 (component side)
    Upper Clockspring C218B, pin 15 (component side) Lower Clockspring C218G, pin 8 (component side)
    Upper Clockspring C218B, pin 6 (component side) Lower Clockspring C218G, pin 5 (component side)
    Upper Clockspring C218B, pin 7 (component side) Lower Clockspring C218G, pin 7 (component side)
    Upper Clockspring C218B, pin 16 (component side) Lower Clockspring C218G, pin 10 (component side)
    Upper Clockspring C218B, pin 8 (component side) Lower Clockspring C218G, pin 9 (component side)

Are the resistances less than 3 ohms?
Yes GO to K4
No INSTALL a new clockspring.
REFER to: Clockspring (501-20B Supplemental Restraint System, Removal and Installation).

K4 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the SCCM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the SCCM connectors. Make sure they seat and latch correctly.
  • 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 SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, 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.

PINPOINT TEST L: THE DISPLAY UNIT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

NOTE: The display unit calibrates after each ignition cycle. Touching the display during an ignition cycle may cause the touchscreen to be inoperative.


Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM B108E:01 Display: General Electrical Failure Sets when the APIM detects an error from the display unit.
APIM B108E:02 Display: General Signal Failure Sets when the APIM receives a message from the display unit indicating a fault.
APIM B108E:4A Display: Incorrect Component Installed Sets when the APIM detects an incorrect display unit is installed.
APIM B108E:4B Display: Over Temperature Sets a message from the display unit reporting an over temperature condition.
APIM B108E:63 Display: Circuit/Component Protection Time-Out Sets when the APIM receives a message from the display unit reporting a fault with the integrated dial or button.
APIM B108E:87 Display: Missing Message Sets when the APIM loses communication to the display unit.
APIM U0162:00 Lost Communication With Navigation Display Module: No Sub Type Information Sets when the APIM loses communication to the display unit.

Possible Sources

  • Communication concern
  • Configuration concern
  • LVDS cable
  • Display unit
  • BCM
  • APIM

NOTE: Prior to carrying out diagnostics, it may be beneficial to determine the cause using the Circuit Tester and LVDS Adapter Kit 420-912 (Rotunda part number NUD420-912) or equivalent tool.

  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Touchscreen/Information and Entertainment Display.

PINPOINT TEST M: SOUND FROM THE SYNC SYSTEM (MUSIC/AUDIBLE PROMPTS) IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Possible Sources

  • Wiring, terminals, or connectors
  • Steering wheel switch input concern
  • APIM
  • ACM
M1 CHECK THE OPERATION OF THE SPEAKERS USING THE AM (AMPLITUDE MODULATION) / FM (FREQUENCY MODULATION) MODE
  • Ignition ON.
  • Operate the audio system in AM / FM mode.
  • Using the audio system fade and balance features, adjust the audio sound to each of the zones (left front, right front, left rear and right rear).

Do all of the speakers operate?
Yes GO to M2
No REFER to the appropriate symptom in the Speakers and Sound Quality Symptom Chart.

M2 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) STEERING WHEEL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, view the following SCCM steering wheel audio/media switch Parameter Identifications (PIDs) while pressing each button:
    • Access the  SCCM  and monitor the  SW_VOICE  PID

    • Access the  SCCM  and monitor the  SW_MEDIA  PID

    • Access the  SCCM  and monitor the  SW_MUTE  PID


Do the Parameter Identifications (PIDs) correspond correctly?
Yes GO to M3
No GO to Pinpoint Test K

M3 CHECK THE APIM (SYNC MODULE) OUTPUT CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect ACM C240B .
  • Disconnect APIM C2383A .
  • Measure:
    Click to display connectors

      Mono/Alert


    Positive Lead Measurement / Action Negative Lead
      C240B-8   Ground
      C240B-21   Ground

    Click to display connectors

      Stereo Left


    Positive Lead Measurement / Action Negative Lead
      C240B-12   Ground
      C240B-25   Ground

    Click to display connectors

      Stereo Right


    Positive Lead Measurement / Action Negative Lead
      C240B-13   Ground
      C240B-26   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to M4
No REPAIR the circuit in question.

M4 CHECK THE APIM (SYNC MODULE) OUTPUT CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors

      Mono/Alert


    Positive Lead Measurement / Action Negative Lead
      C240B-8   Ground
      C240B-21   Ground

    Click to display connectors

      Stereo Left


    Positive Lead Measurement / Action Negative Lead
      C240B-12   Ground
      C240B-25   Ground

    Click to display connectors

      Stereo Right


    Positive Lead Measurement / Action Negative Lead
      C240B-13   Ground
      C240B-26   Ground

Is any voltage present?
Yes REPAIR the circuit in question.
No GO to M5

M5 CHECK THE APIM (SYNC MODULE) OUTPUT CIRCUITS FOR A SHORT TOGETHER
  • Measure:
    Click to display connectors

      Mono/Alert


    Positive Lead Measurement / Action Negative Lead
      C240B-8   C240B-21

    Click to display connectors

      Stereo Left


    Positive Lead Measurement / Action Negative Lead
      C240B-12   C240B-25

    Click to display connectors

      Stereo Right


    Positive Lead Measurement / Action Negative Lead
      C240B-13   C240B-26

Are the resistances greater than 10,000 ohms?
Yes GO to M6
No REPAIR the circuits in question.

M6 CHECK THE APIM (SYNC MODULE) OUTPUT CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors

      Mono/Alert


    Positive Lead Measurement / Action Negative Lead
      C240B-8   C2383A-3
      C240B-21   C2383A-4

    Click to display connectors

      Stereo Left


    Positive Lead Measurement / Action Negative Lead
      C240B-12   C2383A-23
      C240B-25   C2383A-24

    Click to display connectors

      Stereo Right


    Positive Lead Measurement / Action Negative Lead
      C240B-13   C2383A-25
      C240B-26   C2383A-26

Are the resistances less than 3 ohms?
Yes GO to M7
No REPAIR the circuit in question.

M7 CHECK FOR AN AC (ALTERNATING CURRENT) VOLTAGE SIGNAL FROM THE APIM (SYNC MODULE) OUTPUT CIRCUITS
  • Connect APIM C2383 .
  • Ignition ON.
  • For a concern playing music using the SYNC system, play an audio file through the audio system using a SYNC audio source (Bluetooth or USB port).
  • For a concern with the SYNC audible prompts, repeatedly press the VOICE button on the steering wheel switch while measuring the voltage.
  • NOTE: The ACM C240A connector must be connected for this test. Measure:
    Click to display connectors

      Mono/Alert


    Positive Lead Measurement / Action Negative Lead
      C240B-8   C240B-21

    Click to display connectors

      Stereo Left


    Positive Lead Measurement / Action Negative Lead
      C240B-12   C240B-25

    Click to display connectors

      Stereo Right


    Positive Lead Measurement / Action Negative Lead
      C240B-13   C240B-26

Is a fluctuating AC voltage present?
Yes GO to M9
No GO to M8

M8 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM connector.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the APIM connector. Make sure it seats and latches correctly.
  • 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, GO to Pinpoint Test AT
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.

M9 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST N: VOICE COMMANDS ARE INOPERATIVE OR OUTGOING AUDIO IS NOT TRANSMITTED DURING A PHONE CALL

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM B1D79:11 Microphone Input: Circuit Short To Ground Sets when the APIM detects a short to ground from the microphone circuitry.
APIM B1D79:12 Microphone Input: Circuit Short To Battery Sets when the APIM detects a short to voltage from the microphone circuitry.
APIM B1D79:13 Microphone Input: Circuit Open Sets when the APIM detects an open from the microphone circuitry.

Possible Sources

  • Wiring, terminals, or connectors
  • Steering wheel switch input concern
  • Microphone
  • APIM
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Voice Recognition.

PINPOINT TEST O: THE SYNC SYSTEM DOES NOT RESPOND TO THE WAKE WORD

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Possible Sources

  • Wake Word setting disabled
  • Incorrect Wake Word used
  • Wake Word not recognized
  • Steering wheel switch input concern
  • Microphone input concern

NOTE: The Wake Word used by the vehicle owner needs to be provided in advance of this test.

O1 CHECK THE OPERATION OF THE STEERING WHEEL VOICE BUTTON
  • Ignition ON.
  • Press the steering wheel voice control button.

Does the SYNC system acknowledge the voice button press?
Yes GO to O2
No GO to Pinpoint Test K

O2 CHECK THE OPERATION OF THE MICROPHONE
  • Turn on the radio and set the source to AM radio.
  • Press the steering wheel voice control button and then state "FM".

Does the radio change to FM?
Yes GO to O3
No GO to Pinpoint Test N

O3 CHECK THE WAKE WORD SETTINGS
  • Access the Ford Voice Settings menu using the touchscreen.

Is the Listen for Wake Word setting enabled?
Yes GO to O4
No ENABLE the Listen for Wake Word setting.

O4 CHECK THE PREFERRED WAKE WORD
  • Access the Preferred Wake Word.
  • Compare the Preferred Wake Word to the wake word provided by the vehicle owner.

Does the Preferred Wake Word match the wake word provided the vehicle owner?
Yes The system is operating as designed. The Preferred Wake Word needs to be spoken clearly for the SYNC system to recognize the request.
No INFORM the vehicle owner of the Preferred Wake Word selected in the SYNC system.

PINPOINT TEST P: A USB (UNIVERSAL SERIAL BUS) INPUT CONCERN

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM B1252:11 USB Port: Circuit Short To Ground Sets when the APIM detects a short to ground from the USB cable.
APIM B1252:13 USB Port: Circuit Open Sets when the APIM detects an open from the USB cable.
APIM B14FD:11 External Media Control Connectivity: Circuit Short To Ground Sets when the APIM detects a short to ground from the USB hub power supply circuit.

Possible Sources

  • Wiring, terminals, or connectors
  • USB device
  • Foreign object in the USB port
  • USB cable
  • Media hub
  • APIM
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Connectivity.

PINPOINT TEST Q: UNABLE TO PAIR BLUETOOTH DEVICE OR A BLUETOOTH FUNCTIONALITY IS INOPERATIVE

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Possible Sources

  • Incompatible Bluetooth device
  • Bluetooth device
  • APIM
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Connectivity.

PINPOINT TEST R: THE 911 ASSIST OR EMERGENCY ASSISTANCE NOT OPERATIONAL MESSAGE DISPLAYS

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

If a fault message appears indicating the 911 Assist or emergency assistance is not operational, the concern may be caused due to modules not communicating or incorrect APIM programming procedures.

Possible Sources

  • 911 Assist or emergency assistance feature disabled
  • Network communication concern
  • Module configuration concern
  • APIM
R1 VERIFY THE 911 ASSIST OR EMERGENCY ASSISTANCE FEATURE IS ENABLED
  • Ignition ON.
  • Check the 911 Assist or emergency assistance feature setting in the display settings menu.

Is the 911 Assist or emergency assistance setting enabled?
Yes GO to R2
No ENABLE the 911 Assist or emergency assistance feature.

R2 CHECK FOR CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Continuous Memory Diagnostic Trouble Codes (CMDTCs) present?
Yes REFER to the appropriate module DTC Chart in the appropriate section.
No GO to R3

R3 CHECK THE VEHICLE SERVICE HISTORY
  • Check the vehicle service history for recent service actions related to the RCM and the APIM .

Is any recent service action noted with the RCM or the APIM noted?
Yes CARRY OUT the PMI procedure using As-Built data as directed by the diagnostic scan tool for the module in question.
No GO to R4

R4 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM and any related in-line connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the APIM and any related in-line connectors. Make sure they seat and latch correctly.
  • 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, GO to Pinpoint Test AT
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.

PINPOINT TEST S: THE COMPASS/NAVIGATION IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Coaxial Antenna Cable ACM Connections


Item Part Number Description
1 AM/FM1 antenna connection
2 FM2 diversity antenna connection
3 Satellite radio connection

Coaxial Cable APIM Connections


Item Part Number Description
1 GPS antenna connection
2 Video coaxial cable connection

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM B119F:01 GPS Antenna: General Electrical Failure Sets when the APIM detects a short to ground or short to voltage from the GPS antenna cable.
APIM B119F:13 GPS Antenna: Circuit Open Sets when the APIM detects an open from the GPS antenna cable.

Possible Sources

  • Corrosion
  • Network communication concern
  • Obstructions in the GPS antenna line of sight to the satellite
  • GPS antenna cable
  • Roof mounted antenna
  • ACM
  • APIM

NOTE: Prior to carrying out diagnostics, it may be beneficial to determine the cause using the Antenna Tool Kit (refer to the Rotunda catalog for the latest part number) or equivalent tool.

S1 CHECK FOR ABS (ANTI-LOCK BRAKE SYSTEM) MODULE NETWORK COMMUNICATION
  • Ignition ON.
  • Using a diagnostic scan tool, clear the APIM Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 30 seconds.
  • Using a diagnostic scan tool, carry out the APIM self-test.

Is DTC U0121:00 present?
Yes GO to Pinpoint Test AQ
No GO to S2

S2 CHECK THE GPS (GLOBAL POSITIONING SYSTEM) ANTENNA RECEPTION
  • Access "APIM Diagnostics" using Bezel Diagnostics.
    REFER to: Bezel Diagnostics (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, General Procedures).
  • Select "Location Information".
  • NOTE: If the value reads less than 3 for "Number of Satellites" or "No GPS Fix" for "Fix Mode", drive the vehicle to an outdoor location free from obstacles such as tall buildings and large trees. Monitor the "Number of Satellites" and "Fix Mode".

Are 3 or more satellites displayed for "Number of Satellites" and is "3D fix obtained" displayed for "fix Mode"?
Yes GO to S3
No GO to S4

S3 CHECK COMPASS FOR CORRECT OPERATION
  • Operate the vehicle and observe the compass heading.

Does the compass operate correctly?
Yes The system is operating correctly at this time. The concern may have been caused by obstructions in the antenna line of sight to the satellites for an extended period of time.
No GO to S13

S4 CHECK FOR CORRECT APIM (SYNC MODULE) OUTPUT VOLTAGE AT THE GPS (GLOBAL POSITIONING SYSTEM) CABLE CONNECTION
  • Ignition OFF.
  • Disconnect GPS antenna cable from the APIM .
  • Ignition ON.
  • NOTE: Refer to the APIM diagram at the beginning of this test to identify the correct cable connection to the APIM . Using the female Flex Probe 300-08058 (0.5 mm x 0.5 mm) or equivalent, measure:
    Positive Lead Measurement / Action Negative Lead
    GPS cable core at the APIM (component side)   Ground

Is the voltage between 4.7 and 5.8 volts?
Yes For vehicles not equipped with a satellite radio, GO to S9
For vehicles equipped with a satellite radio, GO to S5
No GO to S13

S5 CHECK FOR PROMOTIONAL CHANNEL 1
  • Operate the audio system in satellite radio mode.
  • Select channel 1.

Does the satellite radio system receive channel 1 with normal sound quality?
Yes GO to S8
No GO to S6

S6 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OUTPUT VOLTAGE TO THE SATELLITE RADIO ANTENNA CABLE
  • Ignition OFF.
  • Disconnect the satellite radio antenna cable from the ACM .
  • Ignition ON.
  • NOTE: Refer to the diagram at the beginning of this test to identify the correct cable connection to the ACM . Using the female Flex Probe 300-08058 (0.5 mm x 0.5 mm) or equivalent, measure:
    Positive Lead Measurement / Action Negative Lead
    Satellite radio antenna cable core (component side)   Ground

Is the voltage between 4.7 and 5.8 volts?
Yes GO to S7
No GO to S12

S7 CHECK FOR VOLTAGE TO THE GPS (GLOBAL POSITIONING SYSTEM) /SATELLITE RADIO ANTENNA
  • Ignition OFF.
  • Connect the satellite radio antenna cable to the ACM .
  • Disconnect the GPS /satellite radio antenna cable from the satellite radio antenna.
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    GPS /satellite radio antenna cable core at the antenna   Ground

Is the voltage between 4.7 and 5.8 volts?
Yes GO to S8
No IDENTIFY the cable with the open or short. INSTALL a new GPS /satellite radio antenna cable for the one in question.

S8 ISOLATE THE GPS (GLOBAL POSITIONING SYSTEM) /SATELLITE RADIO ANTENNA SPLITTER CABLE
  • Ignition OFF.
  • Install a new front GPS /satellite antenna splitter cable.
  • Operate the vehicle and observe the compass heading.

Does the compass operate correctly?
Yes The repair is complete.
No GO to S10

S9 CHECK FOR VOLTAGE TO THE GPS (GLOBAL POSITIONING SYSTEM) ANTENNA
  • Ignition OFF.
  • Connect the GPS antenna cable to the APIM .
  • Disconnect the GPS antenna cable from the GPS antenna.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    GPS antenna cable core at the antenna   Ground

Is the voltage between 4.7 and 5.8 volts?
Yes GO to S10
No IDENTIFY the cable with the open or short. INSTALL a new GPS cable for the one in question.

S10 CHECK THE ANTENNA BASE AND MOUNTING SURFACE
  • Remove the GPS /satellite radio antenna.
  • Inspect for corrosion on the audio unit antenna base and the vehicle mounting surface.

Is audio unit base and mounting free of corrosion?
Yes GO to S11
No REPAIR any corrosion on the antenna unit base and/or vehicle mounting surface. INSTALL the antenna and make sure the correct torque value is used when tightening the fastener.

S11 CHECK THE GPS (GLOBAL POSITIONING SYSTEM) /SATELLITE RADIO ANTENNA
  • Install a new GPS /satellite radio antenna.
  • Test the system for normal operation.

Does the compass operate correctly?
Yes The repair is complete.
No GO to S13

S12 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

S13 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the APIM and any related in-line connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the APIM and any related in-line connectors. Make sure they seat and latch correctly.
  • 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, GO to Pinpoint Test AT
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.

PINPOINT TEST T: THE FORDPASS FEATURE IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Coaxial Antenna Cable TCU Connections


Item Part Number Description
1 Secondary cellular antenna connection
4 Primary cellular antenna connection

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
TCU B1246:11 GSM (Group System for Mobile) Antenna: Circuit Short To Ground Sets when the TCU detects a short to ground from the primary cellular antenna cable to the satellite antenna for more than 5 seconds.
TCU B1246:13 GSM (Group System for Mobile) Antenna: Circuit Open Sets when the TCU detects an open from the primary cellular antenna cable to the satellite antenna for more than 5 seconds.

Possible Sources

  • Outdated FordPass mobile application software version/level
  • Poor reception
  • Cellular device
  • Wiring, terminals, or connectors
  • Cellular antenna cable
  • Primary cellular antenna cable splitter/combiner
  • Primary cellular antenna
  • TCU

Visual Inspection and Pre-checks

  • Check OASIS for any of the following 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
  • Check the following with the vehicle owner:
  • The FordPass mobile application software version level matches the latest software version level available.
  • The device is logged into the FordPass mobile application with the login created from the application or with the Ford Owner account login that corresponds with the vehicle.
  • The vehicle is added to the FordPass mobile application.
  • FordPass has been fully activated by authorizing the vehicle within the FordPass mobile application.
  • The vehicle is within cell phone tower range. Refer to the coverage map at mobile data service provider website.
  • Check the operation of the FordPass mobile applications for correct operation.

NOTE: Prior to carrying out diagnostics, it may be beneficial to determine the cause using the Antenna Tool Kit (refer to the Rotunda catalog for the latest part number) or equivalent tool.

NOTE: This pinpoint test presumes the Diagnostic Pre-Checks have been completed.

T1 VERIFY THE TCU (TELEMATIC CONTROL UNIT MODULE) PASSES THE NETWORK TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the network test.

Does the TCU pass the network test?
Yes GO to T2
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

T2 CHECK FOR TCU (TELEMATIC CONTROL UNIT MODULE) DIAGNOSTIC TROUBLE CODES
  • Using a diagnostic tool, carry out the TCU self-test.

Is any DTC present?
Yes For any GSM antenna DTC , GO to T19
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to T3

T3 VERIFY THE ONBOARD SERIAL NUMBER
  • Ignition ON.
  • Using the SYNC menu settings, view the onboard modem serial number:
    • Select Settings>General>About Sync

Is the onboard Modem Serial Number (ESN) present?
Yes GO to T6
No GO to T4

T4 RESET THE TCU (TELEMATIC CONTROL UNIT MODULE) AND RECHECK FOR THE ONBOARD SERIAL NUMBER
  • Ignition OFF.
  • Remove the TCU fuse.
  • Wait at 5 minutes.
  • Install the TCU fuse.
  • Ignition ON.
  • Using the SYNC menu settings, view the onboard modem serial number:
    • Select Settings>General>About Sync

Is the onboard Modem Serial Number (ESN) present?
Yes GO to T5
No GO to T21

T5 CHECK FOR CORRECT SYSTEM OPERATION
  • Operate the system and determine if the concern is still present.

Is concern is still present?
Yes GO to T6
No The repair is complete.

T6 CHECK FOR UPDATED SOFTWARE
  • Ignition ON.
  • Program the TCU to the latest version level.
    REFER to: Module Programming (418-01A Module Configuration, General Procedures).
  • Check the system and determine if the concern is still present.

Is concern is still present?
Yes GO to T7
No The repair is complete.

T7 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) CELL PHONE SIGNAL STRENGTH STATUS
  • Ignition ON.
  • NOTE: Drive the vehicle to an outdoor location with good cellular coverage. Refer to the coverage map at the mobile data service provider website. Monitor the cellular signal strength. Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  CELL_SIGNAL  PID


Is the cellular signal between -85 dBm to -95 dBm?
Yes GO to T8
No GO to T19

T8 VERIFY THE TCU (TELEMATIC CONTROL UNIT MODULE) AUTHORIZATION STATUS
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Wait for Auth" or "Authorized" displayed?
Yes GO to T11
No GO to T9

T9 CHECK IF THE TCU (TELEMATIC CONTROL UNIT MODULE) IS IN FACTORY MODE
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Factory Mode" displayed?
Yes GO to T10
No GO to T12

T10 RECHECK IF THE TCU (TELEMATIC CONTROL UNIT MODULE) IS IN FACTORY MODE
  • Carry out the PMI using as-built data.
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Factory Mode" still displayed?
Yes GO to T17
No GO to T11

T11 RESET THE VEHICLE CONNECTIVITY SETTINGS
  • Ignition ON.
  • Using the vehicle touchscreen display, access the SYNC Menu.
    • Select Settings/FordPass Connect/Connectivity Settings
  • Turn the Vehicle Connectivity option off.
  • Ignition OFF.
  • Open and then close the driver door.
  • Lock the vehicle using the button on the IKT or passive key.
  • Wait 30 seconds.
  • Unlock the vehicle using the button on the IKT or passive key.
  • Ignition ON.
  • Using the vehicle touchscreen display, access the SYNC Menu.
    • Select Settings/FordPass Connect/Connectivity Settings
  • Turn the Vehicle Connectivity option on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes GO to T12
No The repair is complete.

T12 CHECK IF THE TCU (TELEMATIC CONTROL UNIT MODULE) IS UN-PROVISIONED
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Un-Provisioned" displayed?
Yes GO to T21
No GO to T13

T13 CHECK FOR CORRECT VEHICLE OPERATION
  • Verify the FordPass function in question operates correctly on the vehicle, independent of the FordPass mobile application. For example, if the FordPass door lock/unlock function is inoperative, check the operation of the door locks using the door lock control switch or IKT /passive key.

Does the base function in question operate when tested on the vehicle?
Yes GO to T14
No REFER to the appropriate section in the Workshop Manual to diagnose the inoperative function.

T14 CHECK IF THE TCU (TELEMATIC CONTROL UNIT MODULE) IS AUTHORIZED
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Authorized" displayed?
Yes The vehicle is operating correctly. The concern may have been caused by a loss of cellular signal, an outdated FordPass App or synchronization concern.
No GO to T15

T15 CHECK IF THE TCU (TELEMATIC CONTROL UNIT MODULE) IS WAITING FOR AUTHORIZATION
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Waiting for Auth" displayed?
Yes GO to T16
No GO to T17

T16 ADD THE VIN (VEHICLE IDENTIFICATION NUMBER) AND THEN RECHECK IF THE TCU (TELEMATIC CONTROL UNIT MODULE) IS AUTHORIZED
  • Add the vehicle VIN to the FordPass/Lincoln Way App and then authorize the vehicle.
  • Using a diagnostic scan tool, access the following TCU PID :
    • Access the  TCU  and monitor the  AUTHMODE  PID


Is "Authorized" displayed?
Yes The repair is complete.
No GO to T17

T17 CHECK FOR LOST COMMUNICATION DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, clear all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait at least 10 seconds.
  • Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any lost communication Diagnostic Trouble Codes (DTCs) set in any audio system module?
Yes REFER to the DTC Chart in this section.
No GO to T18

T18 CARRY OUT A SYNC SYSTEM MASTER RESET

NOTE: Carrying out a Master Reset returns all preference settings to the factory defaults, erases the phone book and call histories, deletes any Bluetooth devices paired with the SYNC system, removes any Wi-Fi network connections (cancelling any system update download or installation in progress), erases the saved destinations (home, favorites, and previous), and deletes any devices paired with the FordPass mobile application.

  • Carry out a master reset from the SYNC Master Reset menu. Refer to the Owner Literature.
  • Uninstall the FordPass mobile application in the phone associated with the vehicle.
  • Re-install the FordPass mobile application in the phone associated with the vehicle.
  • Reauthorize the vehicle from the FordPass application.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes GO to T19
No The repair is complete

T19 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OUTPUT VOLTAGE TO THE PRIMARY CELLULAR ANTENNA CABLE
  • Ignition OFF.
  • Disconnect the primary cellular antenna cable from the TCU .
  • Ignition ON.
  • NOTE: Refer to the diagram at the beginning of this test to identify the correct cable connection to the TCU . Using the female Flex Probe 300-08058 (0.5 mm x 0.5 mm) or equivalent, measure:
    Positive Lead Measurement / Action Negative Lead
    Primary cellular antenna cable core, pin 4 (component side)   Ground

Does the voltage cycle from 0 to approximately 2.8 volts at regular intervals?
Yes GO to T20
No GO to T21

T20 CHECK FOR VOLTAGE TO THE PRIMARY CELLULAR ANTENNA
  • Ignition OFF.
  • Connect the primary cellular antenna cable to the TCU .
  • Disconnect primary cellular antenna cable from the primary cellular antenna cable splitter/combiner.
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Primary cellular antenna cable core at the primary cellular cable splitter/combiner, pin 1   Ground

Does the voltage cycle from 0 to approximately 2.8 volts at regular intervals?
Yes INSTALL a new left and right primary cellular antenna.
REFER to: Cellular Phone Antenna (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to T21
No INSTALL a new left or right primary cellular antenna cable in question.
REFER to: Cellular Antenna Cable (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

T21 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OPERATION
  • Ignition OFF.
  • Inspect the TCU connector.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the TCU connector. Make sure it seats and latches correctly.
  • 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 TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST U: THE VEHICLE WI-FI HOTSPOT FEATURE IS INOPERATIVE, EXPERIENCING POOR DATA SPEED OR CANNOT STREAM ANY DATA

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

Coaxial Antenna Cable TCU Connections


Item Part Number Description
1 Secondary cellular antenna connection
4 Primary cellular antenna connection

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
TCU B1D55:11 Antenna #2: Circuit Short To Ground Sets when the TCU detects a short to ground from the secondary cellular antenna cable for more than 5 seconds.
TCU B1D55:13 Antenna #2: Circuit Open Sets when the TCU detects an open from the secondary cellular antenna cable for more than 5 seconds.

Possible Sources

  • FordPass concern
  • Poor TCU reception
  • Wi-Fi connected device
  • Wiring, terminals, or connectors
  • Secondary cellular antenna
  • Secondary cellular antenna cable
  • TCU

NOTE: Prior to carrying out diagnostics, it may be beneficial to determine the cause using the Antenna Tool Kit (refer to the Rotunda catalog for the latest part number) or equivalent tool.

U1 CHECK FOR CORRECT FORDPASS OPERATION
  • Verify the FordPass function operates correctly. For example, check the operation of the door locks using the FordPass feature.

Does the FordPass feature operate?
Yes GO to U2
No GO to Pinpoint Test T

U2 COMPARE THE WI-FI SPEED TO A SECOND DEVICE
  • Park the vehicle away from buildings with a clear view of the sky.
  • Establish a vehicle Wi-Fi Hotspot connection.
  • Use a laptop (or equivalent device), connect to the vehicle Wi-Fi Hotspot.
    • Using the network connection settings or compatible software on the laptop (or equivalent device), document the connection speed.
  • Disconnect the laptop (or equivalent device) from the vehicle Wi-Fi Hotspot
  • Establish a Wi-Fi connection using a cell phone (or equivalent device) using the cellular network.
  • Use the laptop (or equivalent device) to connect to the new Wi-Fi Hotspot.
    • Using the network connection settings or compatible software on the laptop (or equivalent device), document the connection speed.
  • Compare the data speed from the vehicle Wi-Fi Hotspot to the second device supporting a Wi-Fi hotspot.

Is the data speed of the vehicle 50% or less than the second device?
Yes GO to U3
No The system is operating as designed. The concern may have been caused by environmental conditions or obstruction to the signal.

U3 CHECK FOR TCU (TELEMATIC CONTROL UNIT MODULE) OUTPUT VOLTAGE TO THE SECONDARY CELLULAR ANTENNA CABLE
  • Ignition OFF.
  • Disconnect the secondary cellular antenna cable from the TCU .
  • Ignition ON.
  • NOTE: Refer to the diagram at the beginning of this test to identify the correct cable connection to the TCU . Using the female Flex Probe 300-08058 (0.5 mm x 0.5 mm) or equivalent, measure:
    Positive Lead Measurement / Action Negative Lead
    Secondary cellular antenna cable core, pin 1 (component side)   Ground

Does the voltage cycle from 0 to approximately 2.8 volts at regular intervals?
Yes GO to U4
No GO to U5

U4 CHECK FOR VOLTAGE TO THE SECONDARY CELLULAR ANTENNA
  • Ignition OFF.
  • Connect the secondary cellular antenna cable to the TCU .
  • Disconnect secondary cellular antenna cable from the secondary cellular antenna.
  • Ignition ON.
  • Measure:
    Positive Lead Measurement / Action Negative Lead
    Secondary cellular antenna cable core at the secondary cellular antenna   Ground

Does the voltage cycle from 0 to approximately 1.8 volts at regular intervals?
Yes INSTALL a new secondary cellular antenna.
REFER to: Telematics Control Unit (TCU) Module Antenna (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to U5
No INSTALL a new secondary cellular antenna cable.

U5 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OPERATION
  • Ignition OFF.
  • Inspect the TCU connector.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the TCU connector. Make sure it seats and latches correctly.
  • 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 TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST V: SYNC APPLINK CONCERN

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

  • NOTE: AppLink does not operate if Android Auto™ and Apple CarPlay™ are enabled.

    It is normal for incompatible mobile device platforms, applications, and application versions to be unavailable through SYNC AppLink.
    • If the mobile device platform, application, and application version are compatible, and the device is connected through Bluetooth only, GO to Pinpoint Test Q
    • If the mobile device platform, application, and application version are compatible, and the device is connected through Bluetooth and the USB port, GO to Pinpoint Test P

Possible Sources

  • Refer to the pinpoint test
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST W: ANDROID AUTO™ OR APPLE CARPLAY™ CONCERN

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

  • NOTE: Make sure the operating system of the device and the SYNC system are current.

    CHECK the operation of the USB port by using a known good USB device to play audio files.
    • If the SYNC system does not recognize the USB device, GO to Pinpoint Test P
    • If the SYNC system recognizes the USB device, refer to the Android Auto™ or Apple CarPlay™ information in the Owner Literature.

Possible Sources

  • Refer to the Owner Literature
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Connectivity.

PINPOINT TEST X: ANC (ACTIVE NOISE CONTROL) -RELATED DTC (DIAGNOSTIC TROUBLE CODE) CONCERN

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - Component Location (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).
REFER to: Information and Entertainment System - System Operation and Component Description (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DACMC B116A:01 Handset Microphone: General Electrical Failure Sets when the DACMC detects a fault from the left front ANC microphone circuitry.
DACMC B117A:01 Backup Microphone: General Electrical Failure Sets when the DACMC detects a fault from the right front ANC microphone circuitry.
DACMC B13F5:01 Microphone 3: General Electrical Failure Sets when the DACMC detects a fault from the rear ANC microphone circuitry.

Possible Sources

  • Wiring, terminals, or connectors
  • ANC microphone
  • ACM (with integrated DACMC )

Visual Inspection and Pre-checks

  • Make sure no modifications have been made to the audio system.
  • Inspect the speaker areas for items that may be blocking the speaker sound output.

NOTE: The ANC system is not compatible with aftermarket audio system components and architectures not approved by Ford.

X1 INSPECT THE ANC (ACTIVE NOISE CONTROL) MICROPHONES
  • Inspect each ANC microphone and make sure it is correctly installed into the mounting bezel.

Are the ANC microphones installed correctly?
Yes For the 11 speaker system, GO to X2
For the 13 or 19 speaker system, GO to X3
No Correctly INSTALL the ANC microphone in question.
REFER to: Active Noise Control Microphone (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

X2 CHECK FOR ACM (AUDIO FRONT CONTROL MODULE) SPEAKER-RELATED DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the ACM self-test.

Are any ACM speaker-related Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE the speaker Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to X4

X3 CHECK FOR DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) SPEAKER-RELATED DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the DSP self-test.

Are any DSP speaker-related Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE the speaker-related Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to X4

X4 CHECK THE SUSPECT ANC (ACTIVE NOISE CONTROL) MICROPHONE INPUT CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Front Driver ANC microphone C9228 (B116A:01).
  • Disconnect Front Passenger ANC microphone C9227 (B117A:01).
  • Disconnect Rear ANC microphone C9225 (B13F5:01).
  • Disconnect ACM C240B .
  • Measure:
    Click to display connectors

      Front Driver ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9228-1   Ground
      C9228-2   Ground

    Click to display connectors

      Front Passenger ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9227-1   Ground
      C9227-2   Ground

    Click to display connectors

      Rear ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9225-1   Ground
      C9225-2   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to X5
No REPAIR the circuit in question.

X5 CHECK THE SUSPECT ANC (ACTIVE NOISE CONTROL) MICROPHONE INPUT CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors

      Front Driver ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9228-1   Ground
      C9228-2   Ground

    Click to display connectors

      Front Passenger ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9227-1   Ground
      C9227-2   Ground

    Click to display connectors

      Rear ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9225-1   Ground
      C9225-2   Ground

Is any voltage present?
Yes REPAIR the circuit in question.
No GO to X6

X6 CHECK THE SUSPECT ANC (ACTIVE NOISE CONTROL) MICROPHONE INPUT CIRCUITS FOR A SHORT TOGETHER
  • Measure:
    Click to display connectors

      Front Driver ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9228-1   C9228-2

    Click to display connectors

      Front Passenger ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9227-1   C9227-2

    Click to display connectors

      Rear ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9225-1   C9225-2

Is the resistance greater than 10,000 ohms?
Yes GO to X7
No REPAIR the circuits.

X7 CHECK THE SUSPECT ANC (ACTIVE NOISE CONTROL) MICROPHONE INPUT CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors

      Front Driver ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9228-1   C240B-1
      C9228-2   C240B-14

    Click to display connectors

      Front Passenger ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9227-1   C240B-2
      C9227-2   C240B-15

    Click to display connectors

      Center ANC Microphone


    Positive Lead Measurement / Action Negative Lead
      C9225-1   C240B-7
      C9225-2   C240B-20

Are the resistances less than 3 ohms?
Yes INSTALL a new ANC microphone in question.
REFER to: Active Noise Control Microphone (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to X8
No REPAIR the circuit in question.

X8 CHECK FOR CORRECT DACMC (DIGITAL AUDIO CONTROL MODULE C) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • Corrosion (clean module pins or install new connectors or terminals)
    • Damaged or bent pins (install new terminals or pins)
    • Pushed-out pins (install new pins as necessary)
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST Y: U0100:00 (ACM (AUDIO FRONT CONTROL MODULE) , DACMC (DIGITAL AUDIO CONTROL MODULE C) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) , TCU (TELEMATIC CONTROL UNIT MODULE) )

Normal Operation and Fault Conditions

The ACM and the TCU communicate with the PCM over the CAN . If messages are missing or not received from the PCM module, features such as the speed compensated volume can be inoperative.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Sets when the ACM detects network messages are missing from the PCM for more than 5 seconds.
DACMC U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Sets when the DACMC detects network messages are missing from the PCM for more than 5 seconds.
DSP U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Sets when the DSP detects network messages are missing from the PCM for more than 5 seconds.
TCU U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Sets when the TCU detects network messages are missing from the PCM for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DACMC concern
  • DSP concern
  • TCU concern
  • PCM
Y1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify an observable symptom is 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 an intermittent fault condition.

Y2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the PCM pass the network test?
Yes GO to Y3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Y3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DACMC , DSP , TCU ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE these Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to Y4

Y4 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the PCM self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the Diagnosis and Testing in the appropriate 303-14 section.
No GO to Y5

Y5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0100:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM , DACMC , DSP , TCU ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DACMC , DSP , TCU ) setting the DTC .

Is DTC U0100:00 still present?
Yes GO to Y6
No The system is operating correctly at this time. The DTC may have set due to high network traffic or an intermittent fault condition.

Y6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the PCM and the module in question ( ACM , DACMC , DSP , TCU ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to Y7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

Y7 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the PCM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the PCM connectors. Make sure they seat and latch correctly.
  • 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,
   Click here to access Guided Routine (PCM).
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.

PINPOINT TEST Z: U0140:00 (ACM (AUDIO FRONT CONTROL MODULE) , DACMC (DIGITAL AUDIO CONTROL MODULE C) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) , FCIMB (FRONT CONTROLS INTERFACE MODULE B) , TCU (TELEMATIC CONTROL UNIT MODULE) )

Normal Operation and Fault Conditions

The ACM , the DACMC , the DSP , FCIMB and the TCU communicate with the BCM over the CAN . If messages are missing or not received from the BCM , the display screen brightness may not operate not operate correctly.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the ACM detects network messages are missing from the BCM for more than 5 seconds.
DACMC U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the DACMC detects network messages are missing from the BCM for more than 5 seconds.
DSP U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the DSP detects network messages are missing from the BCM for more than 5 seconds.
FCIMB U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the FCIMB detects network messages are missing from the BCM for more than 5 seconds.
TCU U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the TCU detects network messages are missing from the BCM for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DACMC concern
  • DSP concern
  • FCIMB concern
  • TCU concern
  • BCM
Z1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Z2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

Z2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the BCM pass the network test?
Yes GO to Z3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

Z3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DACMC , DSP , FCIMB , TCU ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to Z4

Z4 CHECK FOR NON-NETWORK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the BCM self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the Master DTC Chart
No GO to Z5

Z5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0140:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM , DACMC , DSP , FCIMB , TCU ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DACMC , DSP , FCIMB , TCU ) setting the DTC .

Is DTC U0140:00 still present?
Yes GO to Z6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

Z6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the BCM and the module in question ( ACM , DACMC , DSP , FCIMB , TCU ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to Z7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

Z7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the BCM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • 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 BCM .
REFER to: Body Control Module (BCM) (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.

PINPOINT TEST AA: U0146 (TCU (TELEMATIC CONTROL UNIT MODULE) )

Normal Operation and Fault Conditions

The TCU communicates with the GWM over the CAN . If messages are missing or not received from the GWM , FordPass features and over the air updates may be inoperative.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
TCU U0146:09 Lost Communication With Serial Data Gateway 'A': Component Failures Sets when the TCU detects network messages are missing from the GWM over the Ethernet for more than 5 seconds.

Possible Sources

  • Network communication concern
  • TCU concern
  • GWM
AA1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify an observable symptom present.

Is an observable symptom present?
Yes GO to AA2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AA2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the GWM pass the network test?
Yes GO to AA3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AA3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (TCU ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE these Diagnostic Trouble Codes (DTCs) first. REFER to the Diagnostic Trouble Code (DTC) Chart in this section.
No GO to AA4

AA4 CHECK FOR GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the GWM self-test.

Are any GWM Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the Master DTC Chart.
No GO to AA5

AA5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0146:09
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (TCU ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (TCU ) setting the DTC .

Is DTC U0146:09 still present?
Yes GO to AA6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AA6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the GWM and the module in question ( TCU ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AA7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AA7 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the GWM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the GWM connectors. Make sure they seat and latch correctly.
  • 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 GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, 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.

PINPOINT TEST AB: U0151:00 (FCIMB (FRONT CONTROLS INTERFACE MODULE B) )

Normal Operation and Fault Conditions

The FCIMB communicates with the RCM over the CAN . If messages are missing or not received from the RCM , features such as the 911 Assist or Emergency Assist or the passenger airbag disable indicator may be inoperative.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
FCIMB U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information Sets when the FCIMB detects messages from the RCM are missing for more than 5 seconds.

Possible Sources

  • Network communication concern
  • FCIMB concern
  • RCM
AB1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AB2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AB2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the RCM pass the network test?
Yes GO to AB3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AB3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (FCIMB ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AB4

AB4 CHECK FOR NON-NETWORK RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the RCM self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the Master DTC Chart.
No GO to AB5

AB5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0151:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (FCIMB ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (FCIMB ) setting the DTC .

Is DTC U0151:00 still present?
Yes GO to AB6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AB6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the RCM and the module in question ( FCIMB ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AB7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AB7 CHECK FOR CORRECT RCM (RESTRAINTS CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the RCM and any related in-line connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the RCM and any related in-line connectors. Make sure they seat and latch correctly.
  • 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 RCM .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, 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.

PINPOINT TEST AC: U0155:00 (ACM (AUDIO FRONT CONTROL MODULE) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) )

Normal Operation and Fault Conditions

The ACM and the DSP communicate with the IPC over the CAN . If messages are missing or not received from the IPC , features such as the display illumination or warning chimes may not operate correctly.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information Sets when the ACM detects network messages are missing from the IPC for more than 5 seconds.
DSP U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information Sets when the DSP detects network messages are missing from the IPC for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DSP concern
  • IPC
AC1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AC2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AC2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the IPC pass the network test?
Yes GO to AC3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AC3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AC4

AC4 CHECK FOR NON-NETWORK IPC (INSTRUMENT PANEL CLUSTER) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the IPC self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes REFER to the Master DTC Chart.
No GO to AC5

AC5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0155:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM , DSP ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP ) setting the DTC .

Is DTC U0155:00 still present?
Yes GO to AC6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AC6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the IPC and the module in question ( ACM , DSP ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AC7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AC7 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the IPC connector.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the IPC connector. Make sure it seats and latches correctly.
  • 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 IPC .
REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, 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.

PINPOINT TEST AD: U0184:00 (DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) )

Normal Operation and Fault Conditions

The DSP communicates with the ACM over the CAN . If messages are missing or not received from the ACM , the display unit may be blank.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSP U0184:00 Lost Communication With Radio: No Sub Type Information Sets when the DSP detects network messages are missing from the ACM for more than 5 seconds.

Possible Sources

  • Network communication concern
  • DSP concern
  • ACM
AD1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AD2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AD2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the ACM pass the network test?
Yes GO to AD3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AD3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (DSP ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AD4

AD4 CHECK FOR NON-NETWORK ACM (AUDIO FRONT CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the ACM self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AD5

AD5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0184:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (DSP ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (DSP ) setting the DTC .

Is DTC U0184:00 still present?
Yes GO to AD6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AD6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the ACM and the module in question ( DSP ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AD7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AD7 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the ACM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST AE: U0237:00 (ACM (AUDIO FRONT CONTROL MODULE) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) )

Normal Operation and Fault Conditions

The ACM and the DSP communicates with the DACMC over the CAN . If messages are missing or not received from the DACMC , features such as the ANC may not operate correctly.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0237:00 Lost Communication With Digital Audio Control Module 'C': No Sub Type Information Sets when the ACM detects network messages are missing from the DACMC for more than 5 seconds.
DSP U0237:00 Lost Communication With Digital Audio Control Module 'C': No Sub Type Information Sets when the DSP detects network messages are missing from the DACMC for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DSP concern
  • DSP
AE1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AE2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AE2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the DACMC pass the network test?
Yes GO to AE3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AE3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AE4

AE4 CHECK FOR NON-NETWORK DACMC (DIGITAL AUDIO CONTROL MODULE C) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the DACMC self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AE5

AE5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0237:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM , DSP ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP ) setting the DTC .

Is DTC U0237:00 still present?
Yes GO to AE6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AE6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the ACM and the module in question ( ACM , DSP ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AE7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AE7 CHECK FOR CORRECT DACMC (DIGITAL AUDIO CONTROL MODULE C) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the ACM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST AF: U0238:00 (ACM (AUDIO FRONT CONTROL MODULE) )

Normal Operation and Fault Conditions

The ACM communicates with the audio DSP module over the CAN . If messages are missing or not received from the DSP , features such as the emergency assistance feature may not operate correctly.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0238:00 Lost Communication With Digital Audio Control Module 'D': No Sub Type Information Sets when the ACM detects network messages are missing from the DSP for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DSP
AF1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AF2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AF2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the DSP pass the network test?
Yes GO to AF3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AF3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the appropriate DTC Chart in this section.
No GO to AF4

AF4 CHECK FOR NON-NETWORK DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the DSP self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AF5

AF5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0238:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM ) setting the DTC .

Is DTC U0238:00 still present?
Yes GO to AF6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AF6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the audio DSP module and the module in question ( ACM ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AF7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AF7 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the DSP connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST AG: U0253:00 (ACM (AUDIO FRONT CONTROL MODULE) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) , FCIMB (FRONT CONTROLS INTERFACE MODULE B) )

Normal Operation and Fault Conditions

The ACM , the DSP and the FCIMB communicate with the APIM over the CAN . If messages are missing or not received from the APIM , the display is blank.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Sets when the ACM detects network messages are missing from the APIM for more than 5 seconds.
DSP U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Sets when the DSP detects network messages are missing from the APIM for more than 5 seconds.
FCIMB U0253:00 Lost Communication With Accessory Protocol Interface Module: No Sub Type Information Sets when the FCIMB detects network messages are missing from the APIM for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DSP concern
  • FCIMB concern
  • APIM
AG1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AG2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AG2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the APIM pass the network test?
Yes GO to AG3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AG3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP , FCIMB ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AG4

AG4 CHECK FOR NON-NETWORK APIM (SYNC MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the APIM self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AG5

AG5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0253:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM , DSP , FCIMB ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP , FCIMB ) setting the DTC .

Is DTC U0253:00 still present?
Yes GO to AG6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AG6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the APIM and the module in question ( ACM , DSP , FCIMB ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AG7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AG7 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the APIM connectors. Make sure they seat and latch correctly.
  • 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, GO to Pinpoint Test AT
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.

PINPOINT TEST AH: U0256:00 (ACM (AUDIO FRONT CONTROL MODULE) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) )

Normal Operation and Fault Conditions

The ACM and the DSP communicate with the FCIMB over the CAN . If messages are missing or not received from the FCIMB , button presses on the FCIMB may not operate correctly.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information Sets when the ACM detects network messages are missing from the FCIMB for more than 5 seconds.
DSP U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information Sets when the DSP detects network messages are missing from the FCIMB for more than 5 seconds.

Possible Sources

  • Network communication concern
  • ACM concern
  • DSP concern
  • FCIMB
AH1 VERIFY THE CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to AH2
No CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AH2 CHECK THE NETWORK COMMUNICATION
  • Using a diagnostic scan tool, carry out the network test.

Does the FCIMB pass the network test?
Yes GO to AH3
No
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

AH3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the appropriate DTC Chart in this section.
No GO to AH4

AH4 CHECK FOR NON-NETWORK FCIMB (FRONT CONTROLS INTERFACE MODULE B) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the FCIMB self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the DTC Chart in this section.
No GO to AH5

AH5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0256:00
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (ACM , DSP ) setting the DTC .
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question (ACM , DSP ) setting the DTC .

Is DTC U0256:00 still present?
Yes GO to AH6
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AH6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

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

  • Check the vehicle service history for recent service actions related to the FCIMB and the module in question ( ACM , DSP ) setting the DTC . If recent service history is found:
    • verify correct replacement module was installed
      • vehicle parts build list may be used to verify correct part fitment
    • verify the configuration of replacement module was correct
      • re-configure module using as-built data if prior configuration is suspect
    • verify the module was not obtained from a like vehicle and installed into vehicle with concern
      • return the swapped module to source vehicle and obtain new replacement module
  • Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?
Yes GO to AH7
No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AH7 CHECK FOR CORRECT FCIMB (FRONT CONTROLS INTERFACE MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the FCIMB connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the FCIMB connectors. Make sure they seat and latch correctly.
  • 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 FCIMB .
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.

PINPOINT TEST AI: U3003:16 (ACM (AUDIO FRONT CONTROL MODULE) , APIM (SYNC MODULE) , DACMC (DIGITAL AUDIO CONTROL MODULE C) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) , FCIMB (FRONT CONTROLS INTERFACE MODULE B) , TCU (TELEMATIC CONTROL UNIT MODULE) )

Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

The modules monitor the supplied voltage and set a DTC if it falls below a threshold.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U3003:16 Battery Voltage: Circuit Voltage Below Threshold Sets when the ACM detects the supply voltage below 10 volts.
APIM U3003:16 Battery Voltage: Circuit Voltage Below Threshold Sets when the APIM detects the supply voltage below 10 volts.
DACMC U3003:16 Battery Voltage: Circuit Voltage Below Threshold Sets when the DACMC detects the supply voltage below 10 volts.
DSP U3003:16 Battery Voltage: Circuit Voltage Below Threshold Sets when the DSP detects the supply voltage below 10 volts.
FCIMB U3003:16 Battery Voltage: Circuit Voltage Below Threshold Sets when the FCIMB detects the supply voltage below 10 volts.
TCU U3003:16 Battery Voltage: Circuit Voltage Below Threshold Sets when the TCU detects the supply voltage below 10 volts.

Possible Sources

  • Previous low battery voltage
  • Wiring, terminals, or connectors
  • Charging system concern
  • ACM
  • APIM
  • DSP
  • FCIMB
  • TCU
AI1 RECHECK FOR LOW VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question setting the low voltage DTC .
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question setting the low voltage DTC .

Is DTC U3003:16 still present?
Yes GO to AI2
No The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

AI2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any voltage-related Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE the charging system concern. REFER to the appropriate Diagnosis and Testing in section 414-00.
No GO to AI3

AI3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
  • Ignition OFF.
  • Check the battery condition and verify the battery is fully charged.
    REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK and fully charged?
Yes GO to AI4
No DIAGNOSE the battery.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

AI4 COMPARE THE SUSPECT MODULE VOLTAGE SUPPLY PID (PARAMETER IDENTIFICATION) TO THE BATTERY VOLTAGE
  • Ignition ON.
  • Measure and record the battery voltage.
  • For the suspect module, monitor the voltage supply PID :
    • ACM :

      Access the  ACM  and monitor the  VPWR (V)  PID

    • APIM :

      Access the  APIM  and monitor the  VPWR (V)  PID

    • DACMC :

      Access the  DACMC  and monitor the  VPWR (V)  PID

    • DSP :

      Access the  DSP  and monitor the  VPWR (V)  PID

    • FCIMB :

      Access the  FCIMB  and monitor the  VPWR (V)  PID

    • TCU :

      Access the  TCU  and monitor the  VPWR (V)  PID


Is the voltage reading within 0.2 volt of the recorded battery voltage?
Yes For the ACM or the DACMC , GO to AI7
For the APIM , GO to AI8
For the DSP , GO to AI9
For the FCIMB , GO to AI10
For the TCU , GO to AI11
No GO to AI5

AI5 CHECK THE MODULE VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE
  • Ignition OFF.
  • Disconnect the suspect module.
  • Ignition ON.
  • Measure and record the battery voltage.
  • For the suspect module, measure:
    Click to display connectors

      ACM / DACMC


    Positive Lead Measurement / Action Negative Lead
      C240A-1   Ground

    Click to display connectors

      APIM


    Positive Lead Measurement / Action Negative Lead
      C2383A-1   Ground

    Click to display connectors

      DSP - 13 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4326C-4   Ground
      C4326C-8   Ground

    Click to display connectors

      DSP - 19 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4452D-6   Ground
      C4452D-12   Ground

    Click to display connectors

      FCIMB


    Positive Lead Measurement / Action Negative Lead
      C3402-1   Ground

    Click to display connectors

      TCU


    Positive Lead Measurement / Action Negative Lead
      C4803A-1   Ground

Is the voltage reading within 0.2 volt of the recorded battery voltage?
Yes GO to AI6
No REPAIR the circuit for high resistance.

AI6 CHECK THE SUSPECT MODULE GROUND CIRCUIT FOR HIGH RESISTANCE
  • For the suspect module, measure:
    Click to display connectors

      ACM / DACMC


    Positive Lead Measurement / Action Negative Lead
      C240A-1   C240A-13

    Click to display connectors

      APIM


    Positive Lead Measurement / Action Negative Lead
      C2383A-1   C2383A-37

    Click to display connectors

      DSP - 13 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4326C-4   C4326C-1
      C4326C-8   C4326C-5

    Click to display connectors

      DSP - 19 Speaker System


    Positive Lead Measurement / Action Negative Lead
      C4452D-6   C4452D-3
      C4452D-12   C4452D-9

    Click to display connectors

      FCIMB


    Positive Lead Measurement / Action Negative Lead
      C3402-1   C3402-10

    Click to display connectors

      TCU


    Positive Lead Measurement / Action Negative Lead
      C4803A-1   C4803A-9

Is the voltage reading within 0.2 volt of the recorded battery voltage?
Yes For the ACM or the DACMC , GO to AI7
For the APIM , GO to AI8
For the DSP , GO to AI9
For the FCIMB , GO to AI10
For the TCU , GO to AI11
No REPAIR the circuit for high resistance.

AI7 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

AI8 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the APIM connectors. Make sure they seat and latch correctly.
  • 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, GO to Pinpoint Test AT
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.

AI9 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the DSP connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

AI10 CHECK FOR CORRECT FCIMB (FRONT CONTROLS INTERFACE MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the FCIMB connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the FCIMB connectors. Make sure they seat and latch correctly.
  • 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 FCIMB .
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.

AI11 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the TCU connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the TCU connectors. Make sure they seat and latch correctly.
  • 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 TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST AJ: U3003:17 (ACM (AUDIO FRONT CONTROL MODULE) , APIM (SYNC MODULE) , DACMC (DIGITAL AUDIO CONTROL MODULE C) , DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) , FCIMB (FRONT CONTROLS INTERFACE MODULE B) , TCU (TELEMATIC CONTROL UNIT MODULE) )

Normal Operation and Fault Conditions

The modules monitor the supplied voltage and set a DTC if it rises above a threshold.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets when the ACM detects the supply voltage is greater than 16 volts.
APIM U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets when the APIM detects the supply voltage is greater than 16 volts.
DACMC U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets when the DACMC detects the supply voltage is greater than 16 volts.
DSP U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets when the DSP detects the supply voltage is greater than 16 volts.
FCIMB U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets when the FCIMB detects the supply voltage is greater than 16 volts.
TCU U3003:17 Battery Voltage: Circuit Voltage Above Threshold Sets when the TCU detects the supply voltage is greater than 16 volts.

Possible Sources

  • Charging system concern
  • ACM
  • APIM
  • DSP
  • FCIMB
  • TCU

NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.

AJ1 CHECK FOR HIGH VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES
  • Ignition ON.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any charging or over-voltage related voltage Diagnostic Trouble Codes (DTCs) present in multiple modules?
Yes DIAGNOSE the overcharging condition. REFER to the appropriate Diagnosis and Testing in section 414-00.
No GO to AJ2

AJ2 CHECK THE BATTERY VOLTAGE WITH THE ENGINE RUNNING
  • Turn off all interior/exterior lights and accessories.
  • Start and run the engine at approximately 2,000 RPM for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 15.5 volts or higher?
Yes DIAGNOSE the overcharging condition. REFER to the appropriate Diagnosis and Testing in section 414-00.
No GO to AJ3

AJ3 RECHECK FOR THE HIGH VOLTAGE DTC (DIAGNOSTIC TROUBLE CODE)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the DTC for the suspect module.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the suspect module setting the high voltage DTC .

Is DTC U3003:17 still present?
Yes For the ACM or the DACMC , GO to AJ4
For the APIM , GO to AJ5
For the DSP , GO to AJ6
For the FCIMB , GO to AJ7
For the TCU , GO to AJ8
No The system is operating correctly at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

AJ4 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the ACM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the ACM connectors. Make sure they seat and latch correctly.
  • 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 ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

AJ5 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the APIM connectors. Make sure they seat and latch correctly.
  • 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, GO to Pinpoint Test AT
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.

AJ6 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all the DSP connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the DSP connectors. Make sure they seat and latch correctly.
  • 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 DSP .
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

AJ7 CHECK FOR CORRECT FCIMB (FRONT CONTROLS INTERFACE MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the FCIMB connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the FCIMB connectors. Make sure they seat and latch correctly.
  • 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 FCIMB .
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.

AJ8 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the TCU connectors.
  • Repair:
    • corrosion (install new connectors or terminals - clean module pins)
    • damaged or bent pins - install new terminals pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the TCU connectors. Make sure they seat and latch correctly.
  • 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 TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, 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.

PINPOINT TEST AK: BUS OFF (TCU (TELEMATIC CONTROL UNIT MODULE) )

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
TCU U0001:09 High Speed CAN Communication Bus: Component Failures The module could not communicate on the network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report this DTC .

Possible Sources

  • Intermittent fault with the CAN
AK1 DIAGNOSE THE INTERMITTENT FAULT

NOTE: The module was unable to communicate on the network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report this DTC .

  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question.
  • Wait at least 10 seconds.
  • Using a diagnostic scan tool, carry out the self-test for the module in question.
  • Verify the integrity of the connectors and wiring for the CAN .

Is the DTC still present?
Yes DIAGNOSE the CAN in question.
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).
No The system is operating correctly at this time. VERIFY the integrity of the connectors and wiring for the CAN in question.

PINPOINT TEST AL: INVALID DATA RECEIVED

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
DSP U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Sets when the DSP receives invalid network data from the BCM .
FCIMB U0422:81 Invalid Data Received From Body Control Module: Invalid Serial Data Received Sets when the FCIMB receives invalid network data from the BCM .
FCIMB U0554:00 Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information Sets when the FCIMB receives invalid network data from the APIM .
TCU U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Sets when the TCU receives invalid network data from the BCM .
TCU U0554:00 Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information Sets when the TCU receives invalid network data from the APIM .

Possible Sources

  • Suspect module
AL1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE MODULE SENDING INVALID DATA
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the self-test for the module in question sending the invalid data.

Are any Diagnostic Trouble Codes (DTCs) present from the module sending the invalid data?
Yes DIAGNOSE the module sending the invalid data. REFER to the appropriate section in the Workshop Manual.
No DIAGNOSE the observable symptom present. REFER to the appropriate Symptom chart in this section.

PINPOINT TEST AM: MODULE CONFIGURATION FAULT

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U201A:51 Control Module Main Calibration Data: Not Programmed Sets due to an incomplete or incorrect ACM PMI .
ACM U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets due to an incomplete or incorrect ACM PMI .
ACM U2101:00 Control Module Configuration Incompatible: No Sub Type Information Sets due to an incomplete or incorrect ACM PMI .
DACMC U2024:00 Control Module Cal-Config Data: No Sub Type Information Sets due to an incomplete or incorrect DACMC PMI .
DACMC U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets due to an incomplete or incorrect DACMC PMI .
DACMC U2101:00 Control Module Configuration Incompatible: No Sub Type Information Sets due to an incomplete or incorrect DACMC PMI .
DSP U201A:51 Control Module Main Calibration Data: Not Programmed Sets due to an incomplete or incorrect DSP PMI .
DSP U2024:41 Control Module Cal-Config Data: General Checksum Failure Sets due to an incomplete or incorrect DSP PMI .
DSP U2024:48 Control Module Cal-Config Data: Supervision Software Failure Sets due to an incomplete or incorrect DSP PMI .
DSP U2024:51 Control Module Cal-Config Data: Not Programmed Sets due to an incomplete or incorrect DSP PMI .
DSP U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets due to an incomplete or incorrect DSP PMI .
DSP U2101:00 Control Module Configuration Incompatible: No Sub Type Information Sets due to an incomplete or incorrect DSP PMI .
FCIMB U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets due to an incomplete or incorrect FCIMB PMI .
TCU U1A01:09 Communication Link: Component Failures Sets when the TCU detects an internal fault.
TCU U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets due to an internal fault, incomplete or incorrect TCU PMI .
TCU U2101:00 Control Module Configuration Incompatible: No Sub Type Information Sets due to an internal fault, incomplete or incorrect TCU PMI .
TCU U2101:56 Control Module Configuration Incompatible: Invalid/Incompatible Configuration Sets due to an internal fault, incomplete or incorrect TCU PMI .

Possible Sources

  • Incomplete or incorrect module PMI
AM1 CARRY OUT THE PMI (PROGRAMMABLE MODULE INSTALLATION) FOR THE SUSPECT MODULE
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the PMI procedure for the suspect module as directed by the diagnostic scan tool.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the suspect module.
  • Using a diagnostic scan tool, carry out the self-test for the suspect module.

Is the original DTC still present?
Yes INSTALL a new module in question. REFER to the appropriate removal and installation procedure in this section.
No The repair is complete.

PINPOINT TEST AN: INTERNAL MODULE FAILURE

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
ACM U3000:41 Control Module: General Checksum Failure Sets when the ACM detects an internal fault.
ACM U3000:42 Control Module: General Memory Failure Sets when the ACM detects an internal fault.
ACM U3000:96 Control Module: Component Internal Failure Sets when the ACM detects an internal fault.
DACMC U3000:41 Control Module: General Checksum Failure Sets when the DACMC detects an internal fault.
DACMC U3000:42 Control Module: General Memory Failure Sets when the DACMC detects an internal fault.
DACMC U3000:92 Control Module: Performance Or Incorrect Operation Sets when the DACMC detects an internal fault.
DACMC U3000:94 Control Module: Unexpected Operation Sets when the DACMC detects an internal fault.
DSP U3000:41 Control Module: General Checksum Failure Sets when the DSP detects an internal fault.
DSP U3000:42 Control Module: General Memory Failure Sets when the DSP detects an internal fault.
FCIMB B10B8:63 Push Buttons: Circuit/Component Protection Time-Out Sets when the FCIMB detects a button stuck pressed.
FCIMB U3000:49 Control Module: Internal Electronic Failure Sets when the FCIMB detects a button stuck pressed.
TCU B116C:04 External SIM Cable/SIM Card: System Internal Failures Sets when the TCU detects an internal fault.
TCU B116C:57 External SIM Cable/SIM Card: Invalid/Incompatible Software Component Sets when the TCU detects an internal fault.
TCU U1A01:93 Communication Link: No Operation Sets when the TCU detects an internal fault.
TCU U1A4B:52 Control Module Processor B: Not Activated Sets when the TCU detects an internal fault.
TCU U3000:09 Control Module: Component Failures Sets when the TCU detects an internal fault.
TCU U3000:43 Control Module: Special Memory Failure Sets when the TCU detects an internal fault.
TCU U3000:96 Control Module: Component Internal Failure Sets when the TCU detects an internal fault.

Possible Sources

  • Suspect module
AN1 INSTALL A NEW SUSPECT MODULE
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the suspect module.
  • Using a diagnostic scan tool, carry out the self-test for the suspect module.

Is the original DTC still present?
Yes INSTALL a new module in question. REFER to the appropriate removal and installation procedure in this section.
No The repair is complete.

PINPOINT TEST AO: TCU (TELEMATIC CONTROL UNIT MODULE) DTC (DIAGNOSTIC TROUBLE CODE) U3000:04

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
TCU U3000:04 Control Module: System Internal Failures Sets when the TCU detects an internal fault.

Possible Sources

  • TCU software
  • TCU
AO1 CLEAR THE DTC (DIAGNOSTIC TROUBLE CODE) AND RECHECK THE SYSTEM
  • Ignition ON.
  • Using a diagnostic scan tool, clear the TCU DTC .
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out the TCU self-test.

Is the DTC still present?
Yes GO to AO2
No The repair is complete.

AO2 PROGRAM THE TCU (TELEMATIC CONTROL UNIT MODULE)
  • Ignition OFF.
  • Disconnect the 12-volt battery.
  • Wait 5 minutes.
  • Connect the 12-volt battery.
  • Ignition ON.
  • Program the TCU with the latest software level.
  • NOTE: Make sure the SYNC system is connected to the internet before retesting. Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS and follow any instructions for the applicable TSB , GSB , SSM or FSA . INSTALL a new TCU .
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
No The repair is complete.

PINPOINT TEST AP: TCU (TELEMATIC CONTROL UNIT MODULE) DTC (DIAGNOSTIC TROUBLE CODE) U3000:57

Normal Operation and Fault Conditions

Carry out a Master Reset of the SYNC system using the touchscreen display interface.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
TCU U3000:57 Control Module: Invalid/Incompatible Software Component Sets when the TCU detects an internal configuration concern.

Possible Sources

  • Corrupt module configuration
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST AQ: APIM (SYNC MODULE) LOST COMMUNICATION TO A MODULE

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM U0100:00 Lost Communication With ECM/PCM 'A': No Sub Type Information Sets when the APIM detects network messages are missing from the PCM for more than 5 seconds.
APIM U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information Sets when the APIM detects network messages are missing from the ABS module for more than 5 seconds.
APIM U0140:00 Lost Communication With Body Control Module: No Sub Type Information Sets when the APIM detects network messages are missing from the BCM for more than 5 seconds.
APIM U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information Sets when the APIM detects messages from the RCM are missing for more than 5 seconds.
APIM U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information Sets when the APIM detects network messages are missing from the IPC for more than 5 seconds.
APIM U0159:00 Lost Communication With Parking Assist Control Module 'A': No Sub Type Information Set when the APIM detects parking aid network messages are missing from the IPMA for more than 5 seconds.
APIM U0184:00 Lost Communication With Radio: No Sub Type Information Sets when the APIM detects network messages are missing from the ACM for more than 5 seconds.
APIM U0198:00 Lost Communication With Telematic Control Module 'A': No Sub Type Information Sets when the APIM detects network messages are missing from the TCU for more than 5 seconds.
APIM U0208:00 Lost Communication With 'Seat Control Module A': No Sub Type Information Sets when the APIM detects network messages are missing from the SCME for more than 5 seconds.
APIM U0209:00 Lost Communication With 'Seat Control Module B': No Sub Type Information Sets when the APIM detects network messages are missing from the SCMB for more than 5 seconds.
APIM U020C:00 Lost Communication with Wireless Accessory Charging Module 'A': No Sub Type Information Sets when the APIM detects network messages are missing from the WACM for more than 5 seconds.
APIM U0212:00 Lost Communication With Steering Column Control Module: No Sub Type Information Sets when the APIM detects network messages are missing from the SCCM / SASM for more than 5 seconds.
APIM U0214:00 Lost Communication With Remote Function Actuation Module: No Sub Type Information Sets when the APIM detects network messages are missing from the RFA module for more than 5 seconds.
APIM U0232:00 Lost Communication With Side Obstacle Detection Control Module 'A': No Sub Type Information Sets when the APIM detects left cross traffic alert network messages are missing from the IPMA for more than 5 seconds.
APIM U0233:00 Lost Communication With Side Obstacle Detection Control Module 'B': No Sub Type Information Sets when the APIM detects right cross traffic alert network messages are missing from the IPMA for more than 5 seconds when the ignition is on.
APIM U0238:00 Lost Communication With Digital Audio Control Module 'D': No Sub Type Information Sets when the APIM detects network messages are missing from the DSP for more than 5 seconds.
APIM U023B:00 Lost Communication With Image Processing Module B: No Sub Type Information Sets when the APIM detects image processing data network messages are missing from the IPMA for more than 5 seconds when the ignition is on.
APIM U024B:00 Lost Communication with Seat Control Module 'G': No Sub Type Information Sets when the APIM detects network messages are missing from the SCMG for more than 5 seconds.
APIM U024C:00 Lost Communication with Seat Control Module 'H': No Sub Type Information Sets when the APIM detects network messages are missing from the SCMH for more than 5 seconds.
APIM U0256:00 Lost Communication With Front Controls Interface Module 'A': No Sub Type Information Sets when the APIM detects network messages are missing from the FCIMB for more than 5 seconds.
APIM U3000:88 Control Module: Bus Off The module could not communicate on the network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report this DTC .

Possible Sources

  • Communication from sending module concern
  • Intermittent CAN failure concern
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Touchscreen/Information and Entertainment Display.

PINPOINT TEST AR: APIM (SYNC MODULE) INVALID DATA RECEIVED

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM U0415:00 Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information Sets when the APIM receives invalid network data from the ABS module.
APIM U0415:94 Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': Unexpected Operation Sets when the APIM receives invalid network data from the ABS module.
APIM U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information Sets when the APIM receives invalid network data from the BCM .
APIM U0452:00 Invalid Data Received From Restraints Control Module: No Sub Type Information Sets when the APIM receives invalid network data from the RCM .

Possible Sources

  • Corrupt or invalid data received from sending module
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Touchscreen/Information and Entertainment Display.

PINPOINT TEST AS: APIM (SYNC MODULE) CONFIGURATION

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM B156D:54 TCU Customer Connectivity Settings Synchronization With HMI: Missing Calibration Sets due to an incomplete or incorrect APIM PMI .
APIM B156D:89 TCU Customer Connectivity Settings Synchronization With HMI: Data Transfer Failure Sets due to an incomplete or incorrect APIM PMI .
APIM B15EB:57 Consumer Apps: Invalid/Incompatible Software Component Sets due to an incomplete or incorrect APIM PMI .
APIM U0121:55 Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A': Not Configured Sets due to an incomplete or incorrect APIM PMI .
APIM U2017:45 Control Module Software #2: Program Memory Failure Sets due to an incomplete or incorrect APIM PMI .
APIM U2017:51 Control Module Software #2: Not Programmed Sets due to an incomplete or incorrect APIM PMI .
APIM U2017:52 Control Module Software #2: Not Activated Sets due to an incomplete or incorrect APIM PMI .
APIM U2017:54 Control Module Software #2: Missing Calibration Sets due to an incomplete or incorrect APIM PMI .
APIM U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets due to an incomplete or incorrect APIM PMI .
APIM U2101:00 Control Module Configuration Incompatible: No Sub Type Information Sets due to an incomplete or incorrect APIM PMI .
APIM U3000:57 Control Module: Invalid/Incompatible Software Component Sets due to an incomplete or incorrect APIM PMI .

Possible Sources

  • Corrupt module configuration
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Touchscreen/Information and Entertainment Display.

PINPOINT TEST AT: APIM (SYNC MODULE) INTERNAL MODULE CONCERN

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
APIM U3000:04 Control Module: System Internal Failures Sets when the APIM detects an internal fault.
APIM U3000:05 Control Module: System Programming Failures Sets when the APIM detects an internal fault.
APIM U3000:09 Control Module: Component Failures Sets when the APIM detects an internal fault.
APIM U3000:41 Control Module: General Checksum Failure Sets when the APIM detects an internal fault.
APIM U3000:43 Control Module: Special Memory Failure Sets when the APIM detects an internal fault.

Possible Sources

  • Corrupt module firmware
  COMPLETE THE FDRS GUIDED ROUTINE
  • NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.
      To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure SYNC Touchscreen/Information and Entertainment Display.


    Information and Entertainment System - System Operation and Component Description. Description and Operation

    System Operation Audio System Overview NOTE: Refer to the Owner Literature for additional details of the audio system. AM / FM Radio The ACM can be operated when the ignition is on or off...

    Bezel Diagnostics. General Procedures

    Check NOTE: If there is a concern with one of the following components and Bezel Diagnostics cannot be accessed, obtain the module part number by referencing the label attached to the module...

    Other information:

    Lincoln Nautilus 2018-2022 Service Manual: Steering Column. Diagnosis and Testing


    DTC Chart: SCCM 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).   SCCM DTC Chart DTC Description Action B1298:09 Steering Column Adjust Up Switch: Component Failure NOTE: ..

    Lincoln Nautilus 2018-2022 Service Manual: Axle Assembly. Removal and Installation


    Special Tool(s) / General Equipment 205-242Remover, Fuel InjectorTKIT-1986-LMTKIT-1986-F 205-243Remover, HalfshaftTKIT-1986-LMTKIT-1986-F Transmission Jack Wooden Block Removal NOTE: Removal steps in this procedure may contain installation details. Remove the fuel tank. Refer to: Fuel Tank (310-01A Fuel Tank and Lines - 2.0L EcoBoost (184kW/250PS) – M..

    Categories

    Traction Control

    How Does Traction Control Work

    If your vehicle begins to slide, the system applies the brakes to individual wheels and, when needed, reduces power at the same time. If the wheels spin when accelerating on slippery or loose surfaces, the system reduces power in order to increase traction.

    Switching Traction Control On and Off

    WARNING: The stability and traction control light illuminates steadily if the system detects a failure. Make sure you did not manually disable the traction control system using the information display controls or the switch. If the stability control and traction control light is still illuminating steadily, have the system serviced by an authorized dealer immediately. Operating your vehicle with the traction co

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