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

System Operation

System Diagram

*.sttxt { visibility: hidden; } *.stcallout { visibility: visible; } 1 ABS Module 2 PCM 3 IPMA 4 SODx 5 CCM 6 Door Ajar Switches 7 BCM 8 Driver Seatbelt Buckle 9 Passenger Seatbelt Buckle 10 RCM 11 SCCM 12 DSM 13 RGTM 14 GWM 15 ACM (Except China) 16 APIM (China only) 17 IPC Chime Arbitrator 18 Turn Signal On Tick-Tock Tone 19 Chime Sounder 20 14 or 28-Speaker System 21 DSP 22 Front/Rear Speakers E367708

Item	Description
1	ABS module
2	PCM
3	IPMA
4	Side Obstacle Detection Control Module x (SODx)
5	CCM
6	Door ajar switches
7	BCM
8	Driver seatbelt buckle
9	Passenger seatbelt buckle
10	RCM
11	SCCM
12	DSM
13	RGTM
14	GWM
15	ACM (except China)
16	APIM (China only)
17	IPC chime arbitrator
18	Turn signal on tick-tock tone
19	Chime sounder
20	14 or 28-speaker system
21	DSP
22	Front/rear speakers

Network Message Chart - Warning Chimes

NOTE: There are instances where some chimes may sound through the IPC and should not be interpreted as a fault in the audio system. An example might be when the ignition is off, with the key in the ignition and the driver door ajar. In this instance, the audio system is offline and the key-in-ignition chime defaults to the IPC .

The IPC uses multiple network messages to control the overall warning chime arbitrator. The IPC arbitrates and controls all chimes regardless if they are sounded through the audio system or the IPC . The warning chimes all sound through the audio system except for the turn signal tick-tock chime which is sounded through the IPC . In the event of an audio system fault, the IPC sounds all chimes. The audio system has the ability to sound up to 2 chimes at a time while the IPC can only sound a single chime at a time.

The warning chimes use volume, chime frequency, length of time the chime sounds, length of off time between chime tones, 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)

The IPC receives messaged inputs from other modules on the CAN , unless the chime is controlled exclusively by the IPC . The IPC communicates on the HS-CAN3 . If the originating module communicates on a network other than the HS-CAN3 , the messaged signals are sent to the GWM first, then to the IPC .

Chime	Network Message	Originating Module	Originating CAN	Receiving Module
Adaptive cruise control	Cruise control status	PCM	FD-CAN	IPC
	Adaptive cruise control forward distance alert	IPMA
Backup warning (except North America)	Gear lever position	PCM	FD-CAN	IPC
Belt-Minder®	Driver seatbelt buckle status Passenger seatbelt buckle status	RCM	HS-CAN2	IPC
	Vehicle speed Gear lever position	PCM	FD-CAN	IPC
Chime control	IPC chime request Chime source Chime module power up Chime controls	IPC	HS-CAN3	IPC DSP (if equipped)
Chime status feedback	Audio chime status	ACM	HS-CAN3	IPC DSP (if equipped)
Chime volume	Engine rpm data	PCM	FD-CAN	IPC DSP (if equipped)
Chime wakeup	Ignition status Door ajar status Accessory delay	BCM	HS-CAN1	IPC
CTA	Side obstacle detect status-left Cross traffic left sensor status Side obstacle detect status-right Cross traffic right sensor status	IPMA	FD-CAN	IPC
Door ajar	Driver door ajar status Passenger door ajar status Left rear door ajar status Right rear door ajar status	BCM	HS-CAN1	IPC
	Vehicle speed	PCM	FD-CAN	IPC
Forward collision warning	Forward collision chime request	IPMA	FD-CAN	IPC
Headlamps on	Headlamps on warning chime	BCM	HS-CAN1	IPC
Highway assist (hard takeover)	Traffic jam assist warning request	IPMA	FD-CAN	IPC
Ignition-engine on	Vehicle speed Transmission gear display mode	PCM	FD-CAN	IPC
	Driver door ajar status	BCM	HS-CAN1	IPC
Memory stored feedback (memory seat)	Memory feedback request	DSM	MS-CAN	IPC
Parking aid	Parking aid chime request	IPMA	FD-CAN	IPC
PRND not in park	Vehicle speed Transmission gear display mode	PCM	FD-CAN	IPC
	Ignition status Driver door ajar status Transport mode	BCM	HS-CAN1	IPC
Perimeter alarm	Perimeter alarm chime request	BCM	HS-CAN1	IPC
Power liftgate	Power liftgate chime request	RGTM	MS-CAN	IPC
Rear occupant alert	Ignition status Left rear door ajar status Right rear door ajar status	BCM	HS-CAN1	IPC
Seatbelt	Driver seatbelt buckle status Passenger seatbelt buckle status Front passenger detect status	RCM	HS-CAN2	IPC
Service AdvanceTrac	Brake chime request	ABS module	FD-CAN	IPC
Turn signal-hazard on tick-tock	Left turn lamp on request Right turn lamp on request	BCM	HS-CAN1	IPC
Turn signal left on	Turn signal switch status	SCCM	HS-CAN2	IPC
	Odometer count	PCM	FD-CAN	IPC

Warning Chimes

Adaptive Cruise Control

The ACC 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 ACC warning chime sounds through the front speakers. The audio system sounds the appropriate warning chime when it receives the ACC warning request message from the IPMA .

The low priority ACC warning chime is a single-tone, 1-second chime that alerts the driver the ACC 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 ACC operation.

The high priority ACC 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 ACC system can brake the vehicle and the driver needs to apply the brakes to slow the vehicle down.

Airbag Secondary Warning

The airbag secondary warning chime warns the airbag warning indicator LED is inoperative. The airbag secondary warning chime sounds through the front speakers. If the IPC detects a fault with the airbag warning indicator LED during the bulb prove out, the airbag secondary warning chime sounds. If the IPC detects a fault in the airbag warning indicator when a SRS fault condition exists and the RCM has sent the IPC the airbag indicator request, the airbag secondary warning chime sounds. The airbag chime is a 0.5-second chime that sounds 5 times.

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) .

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 that 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.

Backup Warning (Except North America)

The reverse warning chime warns the vehicle is in reverse. When the transmission is in reverse, the PCM sends a message to the IPC of the gear position, and the IPC sounds a 1-second chime tone continuously through the front speakers.

Cross Traffic Alert (CTA)

The CTA warning chime alerts the driver that a vehicle has been detected or there is a system fault. The CTA warning chime sounds a 0.25-second chime continuously until the request is ended. The chime sounds through the rear speakers.

Door Ajar

The door ajar warning chime warns that a door is ajar and sounds the chime through the front speakers. When a door 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 is opened, and only repeats the chime if the door is closed then reopened.

Forward Collision

The forward collision warning chime warns that a forward collision potential has been detected or the CCM detects a forward collision warning system concern. Once the forward collision system detects a possible forward collision, the CCM sends a message to the IPMA over a private CAN . The IPMA sends a message to the IPC to flash the forward collision warning in the message center and a chime request to the IPC 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 center touchscreen display. 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.

Headlamps On

The headlamps on warning chime warns the headlamps are on when exiting the vehicle. 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 IPC sounds the headlamps on chime. The headlamps on chime sounds a 1-second chime tone continuously.

Highway Assist (Hard Takeover)

The highway assist warning chime informs the driver that the system has determined that the driver has diverted attention away from vehicle control, road conditions demand driver control (such as merge lanes, construction, etc.) or the predetermined time for hands off driving has elapsed. If the driver has not taken control of the vehicle (hands on the steering wheel), a warning chime will sound.

Ignition-Engine On

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.

Memory Stored Feedback (Memory Seats)

The memory-stored feedback chime informs the driver the selected preferences have been programmed successfully using the memory switches. When the driver holds either of the memory buttons, the adjustable features including seat position, pedal position or side mirror position selections will be stored in the DSM . The DSM sends a request to the IPC to sound the feedback chime.

Message Center Warnings

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)

Parking Aid

The parking aid system uses a visual display in the center touchscreen display and a chime to alert the driver objects are 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. The parking aid chime sounds through the front speakers for front parking aid, and through the rear speakers for rear parking aid.

PRND Not In Park

The IPC provides a transmission not in park warning chime that sounds along with the transmission not in park message center warning message to inform the driver the vehicle is not in P . The IPC displays the shift to park message and the transmission not in park warning chime sounds three 0.5-second chime tones if the selector lever is not in P , the ignition is OFF and the driver door is open or ajar.

Perimeter Alarm

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 12 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 turning the key to the ON position). After the twelve second warning chime duration, the warning chime stops sounding and the perimeter alarm activates, sounding the horn and flashing the turn signal lamps.

Power Liftgate

The power liftgate warning 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.

Rear Occupant Alert

The rear occupant alert warning chime sounds to alert the driver to check for an occupant in the rear seat before exiting the vehicle. A message will also appear in the center touchscreen. The rear occupant alert system will sound the chime when:

• the ignition is switched off after a rear door is opened or closed while the ignition is on.
• the ignition is switched on within 15 minutes of a rear door opening.
• the ignition is switched on within 15 minutes of the message being displayed or the chime sounding.

Seatbelt

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 or passenger 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.

Service AdvanceTrac

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 brake chime request to sound the warning chime. The service AdvanceTrac warning chime sounds 3 0.5-second chime tones through the front speakers.

Turn Signal-Hazard Tick-Tock

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.

Turn Signal Left On

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).