Lincoln Nautilus Manuals

Lincoln Nautilus: Instrumentation, Message Center and Warning Chimes / Warning Chimes - System Operation and Component Description. Description and Operation

Lincoln Nautilus 2018-2022 Service Manual / Electrical / Instrumentation and Warning Systems / Instrumentation, Message Center and Warning Chimes / Warning Chimes - System Operation and Component Description. Description and Operation

System Operation

System Diagram


Item Description
1 Turn signal/hazard on tick-tock tone
2 IPC
3 ABS module
4 IPMA
5 BCM
6 Driver door ajar switch
7 Driver seatbelt buckle switch
8 RCM
9 PCM
10 GWM
11 ACM
12 Rear speakers
13 Front speakers
14 Audio DSP module
15 Rear speakers
16 Front speakers
17 Revel mid level and Revel Ultima audio systems
18 RGTM
19 SODR
20 SODL
21 DSM
22 PAM
23 SCCM
24 Belt-Minder chime
25 Door ajar chime
26 Headlamps on chime
27 Parking brake chime
28 Seatbelt chime
29 Message center chime
30 Service AdvanceTrac chime
31 Ignition/engine on chime
32 Memory feedback chime
33 Perimeter alarm chime
34 Turn signal left on chime
35 Adaptive cruise control chime
36 BLIS / CTA chime
37 Forward collision warning chime
38 Lane keeping alert warning chime
39 Active park assist/parking aid chime
40 Backup chime (China only)
41 Power liftgate chime
42 IPC chime arbitrator
43 Base audio system
44 Passenger seatbelt buckle switch

Network Message Chart

  Module Network Input Messages - IPC


Broadcast Message Originating Module Message Purpose
Active park assist chime request   PAM Input used to control the active park assist chime.
Adaptive cruise control warning request   IPMA Input used to control the adaptive cruise control warning chime.
Cruise control status   PCM Input used to control the adaptive cruise control warning chime.
Cross traffic alert left status   SODL Input used to control the BLIS / CTA chime.
Cross traffic alert right status   SODR Input used to control the BLIS / CTA chime.
Driver door ajar status   BCM Input used for the ignition-engine on chime.
Driver seatbelt buckle status   RCM Input used to control the seatbelt reminder and Belt-Minder® chime.
Forward collision chime request   IPMA Input used for the confirmation chime portion of the forward collision warning chime.
Forward collision warning message request   IPMA Input used for the forward collision warning chime.
Front parking aid chime request   PAM Input used for the parking aid chime.
Front passenger detect status   RCM Input used to control the Belt-Minder® chime.
Gear lever position   PCM
  • Input used to control the Belt-Minder® chime.
  • Input used to control the backup warning chime (China).
Headlamps on warning chime   BCM Input used to control the headlamps on warning chime
Lane keeping system hands off display   IPMA Input used to control the lane keeping alert chime.
Memory feedback request   DSM Input used to control the memory seat status feedback chime.
Parking aid chime request   PAM Input used to control the parking aid chime status.
Parking brake chime request ABS module Input used to control the electric parking brake chime.
Passenger seatbelt buckle status   RCM Input used to control the Belt-Minder® chime.
Perimeter alarm chime request   BCM Input used to control the perimeter alarm chime.
Power liftgate chime request   RGTM Input used to control the power liftgate chime.
Power pack status   PCM Input used for the ignition-engine on chime.
Rear parking aid chime request   PAM Input used to control the parking aid chime.
Side obstacle sensor status-left   SODL Input used to control the BLIS / CTA chime.
Side obstacle sensor status-right   SODR Input used to control the BLIS / CTA chime.
Stability-traction control chime request ABS module Input used for the service AdvanceTrac® chime.
Transmission shift mode display   PCM Input used for the ignition-engine on chime.
Turn indication request   BCM Input used for the turn indication-hazard tick-tock tone.
Turn signal switch status   SCCM Input used for the turn signal left on chime.
Vehicle speed   PCM
  • Input used to control the Belt-Minder® chime.
  • Input used to control the igntion-engine on chime.

  Module Network Input Messages - ACM and DSP (Revel Audio System)


Broadcast Message Originating Module Message Purpose
Belt-Minder® audio mute   IPC Input from the IPC used to control the Belt-Minder® audio chime output.
Chime source   IPC Input used to configure the chime source (IPC or the audio system).
IPC chime request   IPC Input from the IPC used to control the audio chime output.
Power up chime modules   IPC Input used to initiate the audio system as the chime source.

Warning Chime Characteristics

The warning chimes use volume, chime frequency, length of time the chime sounds, decay of the chime tone and the number of chime tones to identify which chime is sounding. Most warning chimes have unique characteristics, however, there are chimes that do sound the same. The chime characteristics are defined by the different chime types:

  • Information
  • Soft-warning
  • Hard-warning
  • Tick-tock (on-off)

Active Park Assist Chime

The active park assist system uses informational and instructional messages displayed in the FDIM to direct the driver's interaction with the system. The active park assist system chimes alert or to draw the driver's attention to the requested actions. The active park assist chime sounds through the front speakers.

The IPC receives the active park assist chime request from the GWM over the HS-CAN3 .

The GWM receives the active park assist chime request from the PAM over the HS-CAN1 .

The IPC then sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Adaptive Cruise Control Warning Chime

The adaptive cruise control warning chime supplements the message center displays to draw the driver's attention to the need to intervene and take control of the vehicle. There are 2 levels of chime output (high priority and low priority) based upon the nature and urgency of the warning. The adaptive cruise control warning chime sounds through the front speakers. The audio system sounds the appropriate warning chime when it receives the adaptive cruise control warning request (high priority chime) or cruise control status (low priority chime) message from the IPMA .

The low priority adaptive cruise control warning chime is a single-tone, 1-second chime alerts the driver that the adaptive cruise control system has shut itself off due to low vehicle speed (approximately 32 km/h [20 mph]) and the driver needs to intervene if further braking is required or to resume the adaptive cruise control operation.

The high priority adaptive cruise control warning chime is a 0.25-second chime that sounds 12 times. The chime alerts the driver the vehicle is approaching the vehicle ahead at a faster rate than the adaptive cruise control system can brake the vehicle and the driver needs to apply the brakes to slow the vehicle down.

The IPC receives the cruise control status and the adaptive cruise control warning request messages from the GWM over the HS-CAN3 .

The GWM receives the cruise control status message from the PCM over the HS-CAN1 .

The GWM receives the adaptive cruise control warning request message from the IPMA over the HS-CAN2 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the audio DSP (with Revel audio system) to sound the chime.

Backup Warning Chime (China Only)

The backup warning chime warns the driver the vehicle is in reverse. When the selector lever is in reverse, the PCM sends the gear lever position message to the GWM over the HS-CAN1 . The GWM sends the gear position status message to the IPC over the HS-CAN3 to sound a 1-second chime tone continuously through the front speakers.

Belt-Minder® Feature

NOTE: Whenever the vehicle is operated using MyKey®, the IPC enables the Belt-Minder®.

The Belt-Minder® is configurable on or off.
Refer to: Seatbelt Minder Deactivating/Activating (413-01 Instrumentation, Message Center and Warning Chimes, General Procedures).

The Belt-Minder® feature supplements the current seatbelt warning function and is enabled after the current seatbelt warning is complete. The Belt-Minder® reminds the driver the driver or front passenger seatbelt is unbuckled by intermittently sounding a chime and simultaneously illuminating the seatbelt warning indicator through the front speakers. The Belt-Minder® begins once the current seatbelt warning has ended and the vehicle speed has exceeded 10 km/h (6 mph) with the driver or front passenger seatbelt unbuckled. While activated, the Belt-Minder® chime provides a series of chimes/seatbelt warning indicator flash sequences.

If the vehicle speed drops below 5 km/h (3 mph) once the Belt-Minder® chime has activated, the chime turns off and the seatbelt warning indicator remains on. When the vehicle speed exceeds 10 km/h (6 mph) again, the Belt-Minder® chime resumes.

When MyKey® is in use, the driver cannot configure the Belt-Minder® off. Once the Belt-Minder® is activated, the Belt-Minder® continues to chime periodically (does not time out after 5 minutes) and the audio system is muted until the driver and passenger seatbelts are fastened.

To control the Belt-Minder®, the IPC receives the vehicle speed, gear lever position, driver and passenger seatbelt buckle status and front passenger detect status messages from the GWM over the HS-CAN3

The GWM receives the vehicle speed and gear lever position messages from the PCM over the HS-CAN1

The IPC receives the driver and passenger seatbelt status messages from the RCM over the HS-CAN2

When the conditions require the Belt-Minder® chime, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Blind Spot Information System (BLIS®)/Cross Traffic Alert (CTA) Warning Chime

The BLIS / CTA warning chime sounds to alert the driver that a vehicle has been detected or there is a system fault. The BLIS / CTA warning chime sounds a 0.25-second chime continuously until the request is ended.

The IPC receives the cross traffic alert left status, the cross traffic alert right status, side obstacle detect status-left and the side obstacle detect status-right request messages from the GWM over the HS-CAN3 .

The GWM receives the cross traffic alert right status, side obstacle detect status-left and the side obstacle detect status-right request messages from the SODL and SODR over the MS-CAN .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Door Ajar Warning Chime

The door ajar warning chime warns that a door or the liftgate is ajar and sounds a chime through the front speakers. When a door or the liftgate becomes ajar while the ignition is in RUN with vehicle speed greater than 5 km/h (3 mph), the IPC displays the appropriate door ajar warning message and sounds a single chime tone for each door opened. The door ajar chime only sounds once for each time the door or the liftgate is opened, and only repeats the chime if the door is closed then reopened.

The IPC receives the door ajar status (driver door, passenger door, right rear door, left rear door or liftgate) from the GWM over the HS-CAN3 . The GWM receives the door ajar status from the BCM over the HS-CAN1 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Forward Collision Warning Chime

The forward collision warning chime warns that a forward collision potential has been detected or the CCM or IPMA detects a forward collision warning system concern. Once the forward collision system detects a possible forward collision, the IPMA the forward collision warning message request to the IPC through the GWM to sound a 0.25-second chime tone 12 times.

The forward collision warning system and chime can be disabled or turned off using the message center. When MyKey® is in use, the driver cannot configure the forward collision warning system or chime off. When the driver disables the forward collision warning chime, the IPMA sends the IPC the forward collision chime request through the GWM to sound a 0.25-second chime tone 12 times at 50% volume. The forward collision warning chime and confirmation chime are both sounded through the front speakers.

The IPC receives the forward collision warning message request and the forward collision chime request from the GWM over the HS-CAN3 .

The GWM receives the forward collision warning message request and the forward collision chime request from the IPMA over the HS-CAN2 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Headlamps On Warning Chime

When the driver exits the vehicle with the driver door ajar, the headlamp switch is in the PARK or HEADLAMP position and the ignition is OFF, the BCM sends the headlamp on warning chime message to the IPC through the GWM to sound the headlamps on chime. The headlamps on chime sounds a 1-second chime tone continuously.

The IPC receives the headlamp on warning chime message from the GWM over the HS-CAN3 .

The GWM receives the headlamp on warning chime message from the BCM over the HS-CAN1 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Ignition-Engine On Warning Chime

The ignition-engine on chime informs the driver they are exiting the vehicle when the ignition has been left on (engine off) or the engine is running. When the driver exits the vehicle with the ignition on or with the engine running, the ignition-engine on warning chime sounds five 1-second chime tones. The ignition-engine on warning chime sounds through the front speakers. The IPC uses driver door ajar status, vehicle speed and transmission shift mode display messaged inputs to control the ignition-engine on warning chime.

The IPC receives the driver door ajar status, vehicle speed and transmission shift mode display messages from the GWM over the HS-CAN3 .

The GWM receives the driver door ajar status message from the BCM over the HS-CAN1 .

The GWM receives the vehicle speed and transmission gear display messages from the PCM over the HS-CAN1 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Lane Keeping Alert Warning Chime

The lane keeping alert warning chime sounds an alert that the driver's hands are off the steering wheel. The lane keeping alert warning system chime sounds three 0.25-second chime tones through the front speakers.

The IPC receives the lane keeping hands off display message from the GWM over the HS-CAN3 .

The GWM receives the land keeping hands off display message from the IPMA over the HS-CAN2 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Memory-Stored Feedback Chime

The memory-stored feedback chime informs the driver the preferences have been successfully programmed through the memory set procedure. The memory-stored feedback chime sounds a 100-millisecond chirp when the DSM successfully stores a memory change.

The IPC receives the memory feedback request from the GWM over the HS-CAN3 .

The GWM receives the memory feedback request from the BCM over the HS-CAN1 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Message Center Warning Chime

The message center warning chime feature draws the driver's attention to the message center display to view new warning messages. There are 3 different message center warning chime types that are defined by the length of the chime tone, which are designed to create a greater sense of urgency based on the nature of the condition and message displayed in the message center.

  • Informational (1-second chime)
  • Soft warning (0.5-second chime)
  • Hard warning (0.25-second chime)

When a new message request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Parking Aid Chime

The parking aid system uses a visual display in the FDIM and a chime to alert the driver to objects close to the vehicle. The parking aid chime sounds a repetitive chime tone that decreases the time off between chime tones as objects get closer to the sensor until a continuous tone is heard through the rear speakers.

The IPC receives the front parking aid chime request or rear parking aid chime request from the GWM over the HS-CAN3 .

The GWM receives the front parking aid chime request or rear parking aid chime request from the PAM over the HS-CAN1 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Parking Brake Warning Chime

The parking brake warning chime sounds if the ignition is in RUN, the parking brake is engaged, and the vehicle speed is greater than 5 km/h (3 mph). The parking brake warning chime stops sounding and resets if the parking brake is released, the ignition is not in RUN, the vehicle speed is less than 5 km/h (3 mph), or after 90 seconds from the time the chime is activated. The parking brake warning chime sounds a repetitive 0.5 second chime tone through the front speakers.

The IPC receives the parking brake chime request from the GWM over the HS-CAN3 .

The GWM receives the parking brake chime request from the ABS module over the HS-CAN2 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Perimeter Alarm Warning Chime

The perimeter alarm warning chime alerts the driver the perimeter alarm is armed when the driver door is unlocked before disarming the alarm. The IPC displays a perimeter alarm message in the message center and the perimeter alarm warning chime sounds for twelve 1-second chime tones when the driver door is opened. The perimeter alarm warning chime turns off when the perimeter alarm is disarmed (either by using the key fob or placing the ignition to the ON position). After the 12 second warning chime duration, the warning chime stops sounding and the perimeter alarm activates, sounding the horn and flashing the turn signal lamps.

The IPC receives the perimeter alarm chime request from the GWM over the HS-CAN3 .

The GWM receives the perimeter alarm chime request from the BCM over the HS-CAN1 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Power Liftgate Chime

The power liftgate chime is used to alert the driver of the status of the power liftgate system. The chimes indicate a close request, obstacle detection, memory feedback, a precondition change during operation, a rejected request, and a system error state. There are 4 different chimes used to indicate these various conditions as requested by the RGTM . Two chimes sound once and 2 chimes sound continuously.

The power liftgate chime sounds through the rear speakers. The IPC receives the power liftgate chime request from the GWM over the HS-CAN3 . The GWM receives the power liftgate chime request from the RGTM over the MS-CAN .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Seatbelt Warning Chime

The seatbelt warning chime warns the seatbelt is not fastened. The seatbelt warning chime sounds a repetitive 1-second chime tone for 6 seconds through the front speakers when the driver seatbelt is not fastened and the ignition is transitioned from OFF or ACC to ON or START. The seatbelt warning chime stops sounding when the seatbelt is fastened, when the ignition is transitioned from ON or START to OFF or ACC, or when the chime has sounded for 6 seconds.

The IPC receives the driver seatbelt buckle status message from the GWM over the HS-CAN3 .

The GWM receives the driver seatbelt buckle status from the RCM over the HS-CAN2 .

When the conditions require the seatbelt warning chime, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Service AdvanceTrac® Warning Chime

The service AdvanceTrac® warning chime warns the ABS module has detected a fault condition in the stability-traction control system. If a fault condition exists in the stability-traction control system, the ABS module sends the IPC the AdvanceTrac® warning chime request to display SERVICE ADVANCETRAC in the message center and to sound the chime.

The service AdvanceTrac® warning chime sounds 3 0.5-second chime tones through the front speakers.

The IPC receives the stability-traction control chime request from the GWM over the HS-CAN3 .

The GWM receives the stability-traction control chime request from the ABS module over the HS-CAN2 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Turn Signal Left On Chime

The turn signal left on or turn signal minder chime uses both odometer and turn signal status messages. The turn signal left on chime sounds a repetitive 1-second chime through the front speakers when the vehicle is driven with the turn signal on for more than 3.2 km (2.0 miles).

The IPC receives the turn signal switch status from the GWM over the HS-CAN3 .

The GWM receives the turn signal switch status from the SCCM over the HS-CAN2 .

When a chime request is received, the IPC sends the IPC chime request message to the ACM or the DSP (with Revel audio system) to sound the chime.

Turn Signal On Chime Tone

The IPC provides a repetitive 1-second on/off tick-tock chime tone along with visual RH or LH turn indicators to inform the driver the turn signal or hazard lamp function is on.

The IPC receives the turn indication request from the GWM over the HS-CAN3 .

The GWM receives the turn indication request from the BCM over the HS-CAN1 .

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