Warning Chimes

Overview

The warning chimes provide the driver with audible warnings that act as reminders and supplemental alerts to the visual IPC indications (gauges, indicators and message center warnings). The deviation from this strategy is the air bag warning chime, which alerts the driver that the primary alerting system (air bag warning indicator) does not operate. The IPC controls all warning chimes based on messages received from external modules.

The warning chimes are an integral part of the IPC , which receives and acts upon much of the same input information used to operate the IPC gauges, indicators, warning indicators and message center warnings. The IPC prioritizes the chimes according to a preset hierarchy programmed into the IPC software. When more than one chime request is received by the IPC , the most important chime sounds. If a lower priority chime is currently sounding, the higher priority request takes over and replaces the lower priority chime.

System Operation

System Diagram

Network Message Chart

 Module Network Input Messages - IPC

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. For example, the parking brake warning chime and the key-in-ignition chime are repetitive 1 second chime tones that sound the same, but the entry conditions for sounding the chime may differ. For additional information, refer to the component descriptions for each of the chimes. The chime characteristics are defined by 3 basic chime types:

• Repetitive
• Single tone
• Tick-tock (on-off)

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 IPC sounds the appropriate warning chime when it receives the adaptive cruise control warning chime request (high priority chime) or adaptive cruise control message display (low priority chime) message from the C-CM .

The low priority adaptive cruise control warning chime is a single-tone chime that sounds to alert the driver that the adaptive cruise control system has shut itself off due to low vehicle speed (approximately 32 kmh [19.9 mph]). 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 also a single tone chime that is longer than the low priority chime. The chime increases in intensity and alerts the driver that the vehicle is approaching the vehicle ahead at a faster rate than the adaptive cruise control system can brake the vehicle. The driver needs to apply the brakes to slow the vehicle down.

Air Bag Secondary Warning Chime

The air bag secondary warning chime warns that the air bag warning indicator LED is inoperative.

If the IPC detects a fault with the air bag warning indicator LED during the bulb prove out, the air bag secondary warning chime sounds five repetitive 1 second chime tones.

If the IPC detects a fault in the air bag warning indicator when a SRS fault condition exists and the RCM has sent the IPC the air bag indicator message, the air bag secondary warning chime sounds five repetitive 1 second chime tones.

Belt-Minder® Feature

The Belt-Minder® is configurable. Refer to Belt-Minder® Deactivating/Activating .

The Belt-Minder® feature supplements the current safety belt warning function and is enabled after the current safety belt warning is complete and receives the Belt-Minder® warning request from the RCM . The Belt-Minder® reminds the driver that the driver or front passenger safety belt is unbuckled by intermittently and simultaneously sounding a chime and illuminating the safety belt warning indicator in the IPC once the vehicle speed has exceeded 9.7 kmh (6 mph). The Belt-Minder® remains active for 5 minutes from the time it is started. While activated, the Belt-Minder® chime provides a series of 6 chimes/safety belt warning indicator flash sequences, which consist of a 1 second chime tone and safety belt warning indicator on/off state. The Belt-Minder® chime and the safety belt warning indicator sound and flash for 6 seconds, then the chime stops and the safety belt warning indicator remains on for 25 seconds. The IPC repeats the chime cycle for 5 minutes.

If the vehicle speed drops below 4.8 kmh (3 mph) once the Belt-Minder® chime has activated, the chime turns off and the safety belt warning indicator remains on. When the vehicle speed exceeds 9.7 kmh (6 mph) again, the Belt-Minder® chime resumes.

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

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 safety belts are fastened. For information on the MyKey® feature, refer to the Owner's Literature.

BLIS® / CTA Warning Chime

The BLIS® / CTA warning chime sounds to alert the driver that a vehicle has been detected or that there is a system fault. The IPC receives the CTA information message from the BCM , which gateways the messages from the SOD-L and SOD-R .

The BLIS® / CTA warning chime sounds for 1 second whenever the IPC receives the BLIS® / CTA warning chime request.

Door Ajar Warning Chime

The door ajar warning chime warns that a door or the liftgate is ajar. The IPC receives the driver door, passenger door, left rear door, passenger rear door ajar and the liftgate ajar status from the BCM . When a door or the liftgate becomes ajar while the ignition is in RUN with vehicle speed greater than 5 kmh (3 mph), the IPC displays the appropriate door ajar warning message, illuminates the door ajar message center warning indicator and sounds a single 1.6 second chime tone.

Forward Collision Warning Chime

The forward collision warning chime warns that a forward collision potential has been detected or the C-CM detects a forward collision warning system concern. The IPC receives the forward collision warning chime request from the C-CM .

Once the forward collision system detects a possible forward collision, the C-CM sends the HUD module a message to flash the forward collision warning, a message to the ACM to mute the audio system and a message to the IPC to sound a 1.5 second chime tone.

The forward collision warning system and chime can be configured off using the message center. When MyKey® is in use, the driver cannot configure the forward collision warning system or chime off. For more information on the MyKey® feature, refer to the Owner's Literature. For more information on the forward collision configuration, REFER to Section 419-03C .

Headlamps On Warning Chime

The headlamps on warning chime warns that the headlamps are on when the driver door is ajar and the ignition is off. The IPC receives the headlamps on warning chime command from the BCM . The headlamps on warning chime sounds if the driver door is ajar, the headlamp switch is in the PARK or HEADLAMP position, and the ignition is off.

The chime sounds a repetitive 1.6 second chime tone for as long as the headlamps are on and the IPC receives the chime on command. The chime shuts off when battery saver has expired (approximately 30 minutes).

Key-In-Ignition Warning Chime

The key-in-ignition warning chime warns that the key is still in the ignition lock cylinder when the driver door is ajar (without IA ) or that the ignition is in the accessory state (with IA ). The IPC receives the key-in-ignition warning chime command from the BCM . The key-in-ignition warning chime sounds when the driver door is ajar, the key is in the ignition lock cylinder and in the off/lock or accessory position (without IA ) or when the ignition is in the accessory state (with IA ).

The chime sounds a repetitive 1 second chime tone for as long as the key is in the lock cylinder with the ignition off (except IA ) or the ignition in accessory mode (with IA ) with the door ajar. The chime shuts off when battery saver has expired (approximately 30 minutes).

Memory-Stored Feedback Chime

The memory-stored feedback chime informs the driver their preferences have been successfully programmed through the memory set procedure. The IPC receives the memory feedback request from the BCM . The BCM receives the memory feedback request from the DSM .

The chime sounds for 0.1 second when the IPC receives a successful memory state change message.

Message Center Warning Chime

The message center warning chime feature draws the driver's attention to the message center display to view a new warning message. The IPC provides a single 1.6 second tone whenever a new warning message is displayed in the message center. If multiple warning messages are present, the IPC sounds a chime for each of the warning messages that are present as they cycle through the message center display.

Parking Brake Warning Chime

The parking brake warning chime warns that the parking brake is engaged when the vehicle is in motion. The parking brake warning chime sounds if the ignition is in ON, the parking brake is engaged, and the vehicle speed is greater than 5 kmh (3 mph). The parking brake warning chime stops sounding and resets if the parking brake is released, the ignition is on, if the vehicle speed is less than 5 kmh (3 mph), or after 90 seconds from the time the chime is activated. The IPC receives the park brake chime request from the BCM . The chime sounds a repetitive 1 second chime tone for as long as the parking brake is applied and the IPC receives the park brake chime request.

Perimeter Alarm Warning Chime

The perimeter alarm warning chime alerts the driver the perimeter alarm is armed when the driver door is unlocked with a key. The warning chime is only functional when a key is used to unlock the driver door. If the key fob or keypad (if equipped) is used to unlock the door, the perimeter alarm is disarmed and the warning chime does not sound. The warning chime sounds for 12 seconds when the driver door is opened and turns off when the perimeter alarm is disarmed (either by using the key fob, keypad or turning the key to the ON position). The chime sounds 2 chime tones for the first 6 seconds, followed by 3 chime tones for the next 4 seconds, and finally 4 chime tones for the last 3 seconds. 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 BCM .

Safety Belt Warning Chime

The safety belt warning chime warns that the safety belt is not fastened. The safety belt warning chime sounds repetitive 1.6 second tones for 6 seconds when the driver safety belt is not fastened and the ignition is transitioned from OFF or ACC to ON or START. The safety belt warning chime stops sounding when the safety belt is fastened, when the ignition is transitioned from ON or START to OFF or ACC, or when the chime has sounded for approximately 6 seconds. The IPC receives the safety belt warning chime request from the RCM .

Service AdvanceTrac® Warning Chime

The service AdvanceTrac® warning chime warns that the ABS module has detected a fault condition in the stability-traction control system. The ABS module provides the AdvanceTrac® warning chime request to the IPC .

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 sound the chime. The chime sounds three repetitive 1.0 second chime tones 8 seconds after the IPC has stabilized in its normal operational mode, a fault condition has been detected by the ABS, and a chime request has been received by the IPC .

Turn Signal On Chime

The IPC provides a repetitive tick-tock along with visual RH/LH turn indicator to inform the driver the turn signal or hazard lamp function is on. The IPC receives the turn indicator command from the BCM .

Turn Signal Left On Chime

The IPC uses both odometer and steering wheel switch turn signal messages to control the turn signal left on chime. The IPC receives the steering wheel switch turn signal message from the BCM and the odometer message from the PCM. When the vehicle is driven with the turn signal on for more than 193 km (2.0 miles), the IPC sounds a repetitive 1.0 second chime.