Air Bag Indicator Does Not Come ON

Air Bag Indicator Does Not Come ON

Circuit Description

The ignition switch supplies battery voltage to the AIR BAG indicator using the AM2 fuse. The AIR BAG indicator is connected to the AIR BAG indicator control circuit of the sensing diagnostic module (SDM). When the ignition switch is first turned to the ON position, the SDM responds by illuminating the AIR BAG indicator for approximately 6 seconds while performing diagnostic tests on the SIR system.


Diagnostic Aids

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.


The following are possible causes of the malfunction:

* A short to voltage in the AIR BAG indicator control circuit
* An instrument panel cluster malfunction
* An internal SDM malfunction


If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics).


Test Description

The number below refers to the step number on the diagnostic table.
4. Tests for a short to voltage in the air bag indicator control circuitry.