Test Notes and Schematics

Electrical Schematic

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.

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.