Grand Cherokee 2WD L6-4.0L VIN S (1997)
Seat Belt Reminder Lamp: Description and Operation
SYSTEM OPERATION
The seat belt reminder lamp gives a visual reminder to the vehicle occupants to fasten their seat belts. The lamp is turned on by the instrument
cluster circuitry for about seven seconds when the ignition switch is turned to the On position. If the driver seat belt switch is closed (seat belt is
not buckled), the Body Control Module (BCM) will also sound a chime warning for the duration of the seat belt reminder lamp illumination. The
chime warning will stop when the driver seat belt switch is open (seat belt is buckled).
The seat belt reminder lamp also serves as a backup for the airbag indicator lamp. Following the seat belt reminder lamp seven second display
function, if the instrument cluster circuitry has detected an inoperative airbag indicator lamp circuit it will flash the seat belt reminder lamp on and
off for twenty seconds. If the seat belt reminder lamp flashes longer than twenty seconds, or flashes at any time other than immediately after the
initial seven second seat belt reminder lamp display, it indicates an airbag system fault has been detected and that the airbag indicator lamp is
inoperative.
