Test Notes

Inoperative Lamp Circuit or No Ignition Voltage to Diagnostic Monitor

Normal Operation
The air bag indicator is designed to light for 6 ±2 seconds when the ignition key is turned to the ON position. This initial 6 seconds of air bag indicator illumination (continuous lamp) is considered normal operation and is called "prove-out" of the air bag indicator.

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

If the computer in the diagnostic monitor detects an open in the air bag lamp circuit and if another system fault exists, then the 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 key is in the ON position. The five beeps do not indicate a code five or any other code. The lamp circuitry must be repaired before the fault code can be read.

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