DESCRIPTION & OPERATION
If driver's seat belt is not buckled and ignition is turned to "ON" or "START" position, seat belt warning system will turn on "FASTEN SEAT BELTS" indicator light and sound buzzer for 4 to 8 seconds.
If the driver's belt is buckled after buzzer sounds, buzzer will remain on until timer turns it off. When ignition is turned to "ON" position, current is supplied through timer to buzzer circuit and indicator light circuit.
Light will always remain on until timer turns off current. Buzzer will only sound if single space driver's seat belt is not buckled before turning on ignition.
General Motors Seat Belt Warning System Wiring Diagram. Scheme 1
BUZZER & INDICATOR LIGHT INOPERATIVE
Check fuse. Check for open circuit in timer feed wire. Check seat belt switch for good ground. Check for defective timer or ignition switch.
BUZZER INOPERATIVE
Check for defective buzzer, open circuit in seat belt switch or defective wire. Check connections at seat belt switch and buzzer. Check seat belt switch ground.
INDICATOR LIGHT INOPERATIVE
Check light and wiring for shorts, open circuits, or poor connections.
BUZZER & INDICATOR LIGHT REMAIN ON
Check for open circuit in timer ground lead. Check for a defective timer.