Test Notes

Normal Operation
The air bag warning indicator is designed to illuminate for six ± two seconds when the ignition switch is turned to the ON position. This initial six seconds of air bag warning indicator illumination (continuous lamp) is considered normal operation and is called "prove out" of the air bag warning indicator.

The air bag diagnostic monitor requires power at Pin 1 in order to energize the air bag warning indicator circuit. If the air bag warning indicator circuit is open or if the air bag diagnostic monitor does not have ignition voltage at Pin 1, then the air bag warning indicator will not light.

If the computer in the air bag diagnostic monitor detects an open in the air bag warning indicator circuit and if another system fault exists, then the warning indicator 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 code five or any other code. The air bag warning indicator circuitry must be repaired before the fault code can be read.

Possible Causes
A no air bag warning indicator condition can be caused by:
1. A burned out miniature bulb or open wiring in the air bag warning indicator circuit.
2. Loss of ignition voltage at Pin 1 of the air bag diagnostic monitor.