Air Bag Indicator Always On

Air Bag Indicator Always On

Circuit Description

The ignition switch supplies ignition 1 voltage to the inflatable restraint sensing and diagnostic module (SDM) using the F1 fuse. The ignition switch also supplies battery voltage to the AIR BAG indicator using the F4 fuse. The AIR BAG indicator is connected to the AIR BAG indicator output of the SDM. When the ignition switch is first turned to the ON position, the SDM responds by flashing the AIR BAG indicator seven times.

Diagnostic Aids

In order to disable the shorting bar between the air bag indicator control circuit and ground inside the SDM wiring harness connector, the following two conditions must be met:

* The SDM wiring harness connector must be properly connected to the SDM.
* The connector position assurance (CPA) must be properly installed in the SDM wiring harness connector.

Test Description

The number below refers to the step number on the diagnostic table.
2. This step determines if the malfunction is caused by a battery overcharge condition.