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.
The 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 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 | Perform the Diagnostic System Check - SIR. Is the Diagnostic System Check - SIR complete? | -- | Go to Step 2 | |
2 | Visually inspect the connector and the wiring of the driver side air bag. Is the connector and wiring OK? | -- | Go to Step 4 | Go to Step 3 |
3 | Connect the connector or replace supplemental inflatable restraint (SIR) wiring harness. Is the repair complete? | -- | -- | |
4 |
Is the resistance at the specified value? | 0 ohms | Go to Step 6 | Go to Step 5 |
5 | Replace the air bag wiring. Is the repair complete? | -- | -- | |
6 |
Is DTC 052 still shown as a current fault? | -- | Go to Step 7 | |
7 | Replace the drive side air bag module. Is the repair complete? | -- | -- | |
