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.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
|
Caution: Refer to Sensing and Diagnostic Module Voltage after Ignition is Turned Off Caution in the Preface section. Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section. | ||||
1 | Did you perform the Diagnostic System Check - SIR? | -- | Go to Step 2 | |
2 | Examine the wiring and the connector of the driver side air bag. Is the connector disconnected? | -- | Go to Step 3 | Go to Step 4 |
3 | Connect the driver side air bag connector. Did you complete the repair? | -- | -- | |
4 |
Is the resistance as specified? | 0 ohms | Go to Step 5 | Go to Step 7 |
5 |
Is DTC 052 still shown as a current fault? | -- | Go to Step 6 | System OK |
6 | Replace the driver side air bag module. Did you complete the repair? | -- | -- | |
7 | Replace the supplemental inflatable restraints (SIR) wiring harness. Did you complete the repair? | -- | -- | |
