Diesel Data: Automotive Repair

B1404




DTC B1404

Circuit Description

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

Upon passing these 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 side air bag sensor wiring of the passenger high is shorted to ground.

* The side air bag sensor wiring of the passenger low is shorted to ground.