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 they are within the 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 wiring of the driver high is shorted to battery wiring. |
| • | The side air bag wiring of the driver low is shorted to battery wiring. |
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 | Perform the Diagnostic System Check - SIR. Did you perform the Diagnostic System Check - SIR? | -- | Go to Step 2 | |
2 |
Is there any visible damage to the air bag wiring? | -- | Go to Step 4 | Go to Step 3 |
3 | Measure the resistance between the SDM and the high, low terminal of the driver side air bag module and the battery. Is the resistance equal to the specified value? | 10 K ohms | Go to Step 5 | Go to Step 4 |
4 | Replace the air bag wiring. Did you complete the replacement? | -- | -- | |
5 |
Is DTC 055 still shown as a current fault? | -- | Go to Step 6 | |
6 | Replace the driver side air bag module. Did you complete the replacement? | -- | -- | |
