Test Notes

Normal Operation
The air bag indicator is designed to light for six (+/-two) seconds when the ignition switch is turned to the ON position. This "prove out" of the air bag warning indicator illumination lamp is considered normal operation.

If the air bag warning indicator circuit is open or if the air bag diagnostic monitor does not have voltage at pin C1-1, the air bag warning indicator will not illuminate.

If a fault is detected in the air bag warning indicator circuit and another fault is detected in the air bag system, the air bag diagnostic monitor will turn on its internal tone generator (beeper). The beep pattern is five sets of five beeps. The pattern is repeated every 30 minutes while the ignition switch is in the ON position. The five beeps do not indicate a Diagnostic Trouble Code (DTC) 55. The indicator circuitry must be repaired before any DTCs can be read.

Possible Causes
A "No Air Bag Indicator" concern can be caused by:
- A burned-out miniature bulb or open wiring in the air bag warning indicator circuit.
- Loss of ignition voltage at air bag diagnostic monitor pin C1-1.