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.

Upon passing these tests, 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 deployment loops.

The SDM inspects the air bag wiring by letting the perpetual current flow through the internal circuit and verify the resistance.

If the scan tool displays DTC B1395, connect the wrong high or low wiring correctly or replace the air bag wiring.

Ignition voltage is between 9-16 volts.

Any high or low wiring of the air bag is connected incorrectly.

The SDM commands ON the AIR BAG warning lamp.

The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

Electrical Information Reference

1. If the scan tool displays DTC B1395, check for improperly connected air bag deployment loop wiring.

⇒	If the above condition exists, properly connect the air bag deployment loop wiring.

2. Ignition ON, use the scan tool to clear the DTCs.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM replacement, setup, and programming