DTC 004

DTC 004

CIRCUIT DESCRIPTION
When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform a turn-on test to diagnose critical malfunctions within the SDM itself.

The test ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deploy loops.

CONDITIONS FOR SETTING THE DTC
- The air bag wiring of driver's high is shorted to battery wiring.
- The air bag wiring of driver's low is shorted to battery wire.

TEST

Steps 1-3:

Steps 4-6:

Steps 7-8: