Warning Devices

WARNING DEVICES

The instrument cluster controls the warning chime function. The warning chime sounds to remind the driver to turn the headlamps off when exiting the vehicle, remove the ignition key when exiting the vehicle, close the doors after starting the vehicle, or to fasten the safety belt after starting the vehicle. The instrument cluster utilizes various inputs to determine when to sound the warning chime. The warning chime will sound if the headlamps have been left on with the key OFF and the driver door is ajar, the key is in the ignition with the key OFF and the driver door is ajar, a door is ajar while the key is in the RUN position, or the safety belts have not been fastened and the key is in the RUN position.

The instrument cluster will momentarily sound the chime to alert the driver when a warning message is first displayed on vehicles equipped with a message center. The instrument cluster will also momentarily sound the warning chime to alert the driver when the electronic parking brake is applied, and again when the electronic parking brake is released, for confirmation of parking brake status.

PRINCIPLES OF OPERATION

The instrument cluster controls the following warning chimes:
- driver or passenger safety belt not fastened warning chime (warning times out)
- key-in-ignition warning (repetitive chime)
- headlamp-on warning (repetitive chime)
- door ajar warning (repetitive chime)
- safety belt warning chime (repetitive chime)
- belt minder warning chime (repetitive chime after a delay and the safety belt chime has completed)

The safety belt warning chime warns that the safety belt is not fastened. The safety belt warning chime sounds when the driver or passenger safety belt is not fastened and the key switch is turned from the OFF/LOCK or ACC to the RUN or START position.

The safety belt warning chime stops sounding when the safety belt is fastened, when the key switch is switched from the RUN or START to the OFF/LOCK or ACC position, or when the chime has sounded for approximately 6 seconds.

The safety belt warning chime inputs are:
- key in START position
- key in RUN position
- driver or passenger safety belt switch data communicated by the restraint control module (RCM) to the instrument cluster on circuits 608 (BK/YE) and 1083 (LB/BK).

The safety belt warning lamp along with the chime warns that the safety belt is not fastened. The safety belt warning lamp illuminates when the safety belt is not fastened and the key is turned from the OFF/LOCK or ACC to the RUN or START position.

The safety belt warning lamp turns off when the safety belt is fastened, the key is moved from the RUN or START to the OFF/LOCK or ACC position, or if the lamp is illuminated for approximately 6 seconds.

The safety belt warning lamp inputs are:
- key in START position
- key in RUN position
- driver or passenger safety belt switch data communicated by the restraint control module (RCM) to the instrument cluster on circuits 608 (BK/YE) and 1083 (LB/BK).

NOTE: The belt minder is configurable. To configure without using a diagnostic tool, refer to Belt Minder Deactivating/Activating.

The belt minder feature supplements the current safety belt warning function. The belt minder is enabled after the current safety belt warning is complete. The belt minder reminds the driver that the driver or passenger safety belt is unbuckled by intermittently sounding a chime and illuminating the safety belt warning lamp in the instrument cluster. While activated, the belt minder alternates the chime and indicator from on for 6 seconds to off for 30 seconds.

The door ajar warning chime warns that a door is not fully closed. The chime sounds when any door or the luggage compartment lid becomes ajar while the key is in the RUN position.

The door ajar warning indicator warns that a door is not fully closed. The door ajar warning indicator illuminates when any door or the luggage compartment lid initially becomes ajar while the key is in the RUN position.

The door ajar warning indicator turns off when all doors and the luggage compartment lid are closed, or the key is turned to the OFF/LOCK or ACC position.

The door ajar warning lamp/chime inputs are:
- key in START position
- key in RUN position
- door ajar data communicated by the SJB to the instrument cluster on the SCP communication network

The key-in-ignition warning chime warns that the key is still in the ignition when the driver door is ajar.

The key-in-ignition warning chime sounds when the driver door is ajar and the key is in the ignition switch. The key-in-ignition warning chime stops sounding when the driver door is closed or the key is removed from the ignition.

The key-in-ignition warning chime input is the key-in-ignition switch circuit 1414 (LG/VT), voltage applied with the key in ignition.

The headlamp on warning chime warns that the headlamps are on when the driver door is ajar and the key is removed from the ignition. The headlamps on warning chime sounds if the driver door is ajar, the headlamp switch is in the PARK or HEAD position, and the key is in the OFF/LOCK position with the key out.

The headlamp on warning chime will stop sounding when any one of the above conditions are removed.

The headlamp on warning chime inputs are:
- key in START position
- key in RUN position
- key-in-ignition switch circuit 1414 (LG/VT), no voltage applied with the key removed from the ignition switch

Safety Belt Warning Chime
The safety belt warning chime is activated when the ignition switch is in the RUN position and the restraint control module (RCM) detects an unbuckled driver or front passenger safety belt. The instrument cluster generates the chime. The duration of the chime is 6 seconds or until the safety belt is buckled.

Belt Minder

NOTE: The belt minder feature is configurable. To configure without using a diagnostic tool, refer to Belt Minder Deactivating/Activating.

The belt minder feature supplements the current safety belt warning function. The belt minder feature is enabled after the current safety belt warning is complete. The belt minder reminds the driver or front passenger that their safety belt is unbuckled by intermittently sounding a chime and illuminating the safety belt warning lamp in the instrument cluster once the vehicle speed has exceeded 3 mph (5 km/h). While activated, the belt minder alternates the chime and indicator from ON for 6 seconds to OFF for 30 seconds.

The belt minder feature stops when:
- the driver safety belt is buckled.
- the passenger safety belt is buckled (if seat is occupied).
- the ignition is turned to OFF or ACC.
- 5 minutes have elapsed since belt minder has started.

Air Bag Warning Chime
The air bag warning chime is activated when the air bag warning lamp is inoperative and an active fault is detected by the RCM. The air bag warning chime sounds after the ignition switch has been in the RUN position for more than 20 seconds. When these conditions exist, the RCM sends a chime request through the air bag warning chime request circuit to the instrument cluster. The instrument cluster will activate the air bag warning chime. The warning consists of 5 sets of 5 1-second tone bursts. Each set is separated by 5 seconds of silence. The warning is repeated every 30 minutes.

Key-In-Ignition Warning Chime
When the key-in-ignition switch closes, it grounds an input to the instrument cluster, which then sounds a warning chime, provided that the ignition switch is off and the driver door is open. The instrument cluster will sound a steady tone, which will continue until the key is removed, the ignition switch is rotated to the RUN position, or the driver door is closed.

Headlamps On Warning Chime
The headlamp chime is activated when the instrument cluster receives the headlamps ON signal from the SJB, the key is out of the ignition, and the driver door is ajar. The warning consists of repeated one-half second bursts and will continue to sound until the headlamps/parking lamps are turned off, the driver door is closed, or 10 minutes have elapsed, at which time the battery saver will turn the headlamps off.

Message Center Warning Chime
The message center warning chime will accompany any initial warning message display, as well as any repeated initial warning message. As the message center is an integral part of the instrument cluster, the interaction between the message center and the chime function is also integral to the instrument cluster.

The message center switch tone sounds when any switch on the message center is pressed. The message center switches are supplied with a 5-voltreference signal from the instrument cluster. When a switch is pressed, it completes a circuit through a specific resistor in the switch assembly and back to the instrument cluster. The instrument cluster determines that a switch has been pressed when a voltage is returned to it.

Turn Signal Warning Chime
The turn signal warning chime sounds when the vehicle is driven in excess of 1/2 mile (0.805 km) with the right or left turn signal active continuously. The instrument cluster receives distance traveled information from the ABS module over the SCP communication network and receives turn signal activity information from the multifunction switch.