Voltage is supplied to the body control module (BCM) through the following components when the ignition switch is in the START or RUN position:

When you first turn the ignition switch to the START or RUN position, a class 2 signal from the BCM is sent to the instrument cluster logic turning ON the fasten seat belt indicator. The indicator comes ON steady for 20 seconds and then flashes for another 55 seconds if the drivers safety belt remains unbuckled, or goes out when the driver safety belt is buckled.

When the driver safety belt is buckled, ground is no longer applied to the BCM through CKT 238 (BLK/WHT) from the seat belt switch causing the lamp and chime to go out. The chime will only sound for about the first 5 seconds of the ignition on cycle.

Voltage is supplied at all times to the BCM through the following components:

The chime sounds if the following conditions exist:

When the ignition key is in the ignition switch and the RH front door is open, the ignition key alarm switch closes. The RH door jamb switch also closes. When both of the switches close, the Body Control Module (BCM) senses ground through the following components:

The chime will sound for as long as the door is open and the key is in the ignition switch.

Voltage is supplied through the ILLUM Fuse 12 to the BCM through CKT 44 (DK GRN) when the following conditions exist:

With the panel dimmer switch at the dimmest setting, the current to the BCM may be too weak to be sensed by the module. When the ignition switch is turned to RUN or START, voltage is supplied from the GAUGES Fuse 4 to the BCM through CKT 39 (PNK). When the ILLUM and GAUGES fuse voltages are sensed together, the alarm is not sounded.

GAUGES Fuse 4 loses voltage when the ignition switch is in one of the following positions: