Operation CHARM: Car repair manuals for everyone.

Fasten Safety Belt Warning

The body control module (BCM) will sound the fasten belts warning for 5-8 seconds and illuminate the fasten seat belt indicator under the following conditions:
^ The ignition switch is in the RUN, BULB TEST or START position. Voltage is applied to the BCM ignition positive voltage input.
^ The driver's seat belt is unbuckled. Ground is applied to the BCM seat belt switch signal input.

If the driver seat belt is buckled before the ignition switch is turned to the RUN position, the BULB TEST position, or the START position, the following will occur:
^ The fasten seat belt warning will be disabled.
^ The fasten seat belt indicator will not illuminate.

If the driver seat belt is unbuckled, the fasten seat belt indicator will remain ON for approximately 70 seconds. The indicator turns off immediately if the seat belt is buckled.