Principles of Operation

PRINCIPLES OF OPERATION

The instrument cluster uses different types of sounds to alert the driver of various vehicle conditions as follows:
- safety belt warning (repetitive chime)
- safety belt minder warning (repetitive chime after a delay and after the safety belt chime is completed)
- key-in-ignition warning (repetitive chime)
- headlamps on warning (repetitive chime)
- door ajar warning (single tone chime)
- turn signal on warning (repetitive chime after 3.2 km [2.0 miles])
- turn signal tone (tic-tock chime)
- parking brake warning (repetitive chime)
- air bag secondary warning chime (repetitive chime)

Safety Belt Warning Chime
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 ignition lock cylinder is turned from the OFF/LOCK or ACC to the ON or START position.

The safety belt warning chime stops sounding when the safety belt is fastened, when the ignition lock cylinder is turned from the ON or START position to the OFF/LOCK or ACC position, or when the chime has sounded for approximately 6 seconds.

The safety belt warning chime inputs are:
- ignition switch RUN/START position.
- driver or passenger safety belt switch data communicated by the restraint control module (RCM) to the instrument cluster through the controller area network (CAN).

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

The safety belt minder feature supplements the current safety belt warning function. The safety belt minder is enabled after the current safety belt warning is complete. The safety 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 once the vehicle speed has exceeded 5 km/h (3 mph), and remains active for 5 minutes from the time it is started. While activated, the safety belt minder alternates the chime and indicator from on for 6 seconds to off for 30 seconds.

NOTE: The safety belt minder is disabled for 1 ignition switch ON cycle if the safety belt is buckled then unbuckled during that specific cycle.

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. 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 ACC position.

The key-in-ignition warning chime stops sounding when the driver door is closed, the key is removed from the ignition lock cylinder, or if the ignition lock cylinder is turned to the ON position.

The key-in-ignition warning chime inputs are:
- ignition switch RUN/START position.
- door ajar data communicated by the smart junction box (SJB) to the instrument cluster through the CAN.
- key-in-ignition switch signal from the ignition switch.

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

The headlamps on warning chime stops sounding when any one of the above conditions are removed.

The headlamps on warning chime inputs are:
- ignition switch position.
- key-in-ignition switch position.
- driver door ajar data communicated by the SJB to the instrument cluster through the CAN.
- headlamp switch data communicated by the SJB to the instrument cluster through the CAN.

Door Ajar Warning Chime
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 ignition lock cylinder is in the ON position.

The door ajar warning chime stops sounding when all the doors and the luggage compartment lid are closed, or the ignition lock cylinder is turned to the OFF/LOCK or ACC position.

The door ajar warning lamp/chime inputs are:
- ignition switch RUN/START position.
- door ajar data communicated by the SJB to the instrument cluster through the CAN.

Turn Signal On Warning Chime
The turn signal on warning chime warns that the turn signal has not been cancelled. The turn signal on warning chime sounds if the left or right turn signal is on and the vehicle has traveled more than 3.2 km (2.0 miles).

The turn signal on warning chime stops sounding if the turn signal is turned off, or if the ignition lock cylinder is turned to the OFF or ACCESSORY position.

The turn signal on warning chime inputs are:
- turn signal data communicated by the SJB to the instrument cluster through the CAN communication.
- odometer count data communicated by the powertrain control module (PCM) to the instrument cluster through the CAN.

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 lock cylinder is in ON position, the parking brake is engaged, and the vehicle speed is greater than 5 km/h (3 mph).

The parking brake warning chime stops sounding if the parking brake is released, the ignition lock cylinder is not in the ON position, if 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 inputs are:
- ignition switch RUN/START position.
- parking brake switch data communicated by the SJB to the instrument cluster through the CAN.
- vehicle speed data communicated by the PCM to the instrument cluster through the CAN.

Airbag Secondary Warning Chime
The air bag secondary warning chime warns that the air bag warning indicator light does not work correctly. The instrument cluster monitors the air bag warning indicator status internally. When a fault is present in the air bag warning indicator and the instrument cluster receives an air bag warning indicator on request from the RCM, the air bag secondary warning chime sounds.

The air bag secondary warning chime inputs are:
- ignition switch RUN/START position.
- air bag warning indicator request data is communicated by the RCM to the instrument cluster.

Turn/Hazard On Tone
The turn/hazard on tone provides an audible signal in addition to the turn/hazard indicator lamps. The turn/hazard on tone sounds if the turn or hazard signals are on.

The turn/hazard on tone inputs are:
- left turn indicator signal from the SJB to the instrument cluster.
- right turn indicator signal from the SJB to the instrument cluster.