Diesel Data: Automotive Repair

DTC 052




DTC 052

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.

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

Conditions for Setting the DTC

The resistance of the driver side air bag deployment loop is higher than 2.7 ohms.