Test Notes

Normal Operation
The AIR BAG warning indicator is designed to light for six (+/-two) seconds when the ignition switch is turned to RUN. 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 C2000-1 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 C2000-1, 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 lamp circuit and if another system fault exists, then 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 ignition switch is in RUN. The five beeps do not indicate a code five or any other code. The air bag warning indicator lamp circuitry must be serviced before the diagnostic trouble code can be read.

Possible Causes
A no air bag indicator condition can be caused by:

- A burned out-bulb or open wiring in the air bag warning indicator circuit.
- Loss of ignition voltage at Pin C2000-1 of the air bag diagnostic monitor.