The ignition switch supplies ignition 1 voltage to the inflatable restraint sensing and diagnostic module (SDM) using the F10 fuse. The ignition switch also supplies battery voltage to the AIR BAG indicator using the F1 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 six times.

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:

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

•	The I/P module

•	The SDM module

•	The I/P wiring harness connector

•	The SDM wiring harness connector

1. Ignition Off, disconnect the sensing and diagnostic module (SDM) connector.
2. Inspect the SDM connector and the shorting bar for damage or corrosion.

⇒	If above conditions are present, repair or replace connector as necessary.

3. Test the air bag indicator control circuit for a short to ground.

⇒	If circuit tests normal, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM replacement, setup, and programming