Operation CHARM: Car repair manuals for everyone.

Principles of Operation (How Does it Work?)

Safety Belt Warning Chime
The safety belt warning chime alerts that the safety belt is not fastened. The safety belt chime will sound when the driver safety belt is not fastened and the ignition switch is turned from the OFF to the RUN or START position. The safety belt warning chime will stop when the safety belt is fastened, when the ignition is switched to the OFF position or after the chime has sounded for six seconds.

The safety belt warning chime inputs are:
- ignition switch position
- driver safety belt switch

The output for the safety belt warning chime is the GEM.

Belt Minder
The belt minder feature is configurable. To configure without using a diagnostic tool, refer to Deactivating/Activating the Belt Minder feature under General Procedures.

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 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 three mph. 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 ignition switch is turned to OFF or ACC.
- five minutes have elapsed since belt minder has started.

Door Ajar Warning Chime
The door ajar warning chime alerts when any door becomes ajar while the ignition is in the OFF position.

The door ajar warning will stop when the door is closed or when the ignition switch is turned OFF.

The door ajar warning chime inputs are:
- ignition switch in the RUN position
- door open switches

The output for the door ajar warning chime is the GEM.

Headlamp On Warning Chime
The headlamp on warning chime alerts that the headlamps are on with the driver door open and the ignition switch in the OFF position.

The warning chime will stop when any of the above conditions are removed.

The headlamp on warning chime inputs are:
- ignition switch
- headlamp switch
- driver door switch