Principles of Operation

PRINCIPLES OF OPERATION

Chime
The instrument cluster produces a repetitive chime for either a predetermined amount of time or continuously, under the following conditions:
- the driver safety belt is unbuckled and the ignition switch is in the RUN position
- the key is in the ignition switch and the driver door is open
- the headlamp switch is in the HEAD or PARK position, the driver door is open, and the key is not in the ignition switch
- the Safety Belt Minder feature is enabled and the appropriate parameters have been met

Air Bag Warning Chime
The air bag warning chime warns the driver that the air bag warning indicator lamp is not working and a fault occurred by sounding a chime when the ignition switch is in the RUN position for more than 20 seconds. When these conditions exist, the restraint control module (RCM) sends a chime request through the communication network to the instrument cluster. The instrument cluster then activates the warning chime. The warning consists of 5 sets of 1-second tone bursts. Each set is separated by 5 seconds of silence.

Safety Belt Warning
The safety belt warning chime reminds the driver to fasten the safety belt. This occurs when the ignition switch is turned to the RUN position and the driver safety belt remains unbuckled. The chime is terminated by buckling the driver safety belt at any time during the 4-8 second chime warning.

The chime works in conjunction with the safety belt warning indicator in the instrument cluster.

Key-in-Ignition Warning
The key-in-ignition warning chime sounds continuously when the ignition key is in the ignition lock cylinder with the key OFF and the driver door open. The chime continues to sound until the key is removed from the ignition lock cylinder or the driver door is closed.

Headlamps On Warning
The headlamps on warning chime sounds continuously when the headlamp switch is in the PARK or HEAD position, the driver door is open, and the key is not in the ignition lock cylinder.

The chime continues to sound until the headlamp switch is turned OFF or the driver door is closed.

Park Brake Warning
The park brake warning chime provides an audible indication to the driver that the park brake is engaged while the vehicle is in motion.

Safety Belt Minder

NOTE: The Safety Belt Minder can be configured with or without using a diagnostic tool. To configure this feature without using a diagnostic tool, refer to Belt Minder Deactivating/Activating.

The Safety Belt Minder feature supplements the safety belt warning function. The Safety Belt Minder feature is enabled after the current safety belt warning is complete. The Safety Belt Minder reminds the driver that the 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. While activated, the Safety Belt Minder activates the chime and warning indicator for 6 seconds, with a 30 second interval between activations.

The Safety Belt Minder stops when:
- the driver seat belt is buckled.
- the ignition switch is turned to OFF or ACC.
- 5 minutes have elapsed since the belt minder started.