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
A communication error occurs between the SDM and the passenger side air bag sensor.
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 the air bag wiring damaged? | -- | Go to Step 3 | Go to Step 4 |
3 | Replace the air bag wiring. Did you complete the replacement? | -- | -- | |
4 |
Is DTC 086 still shown as a current fault? | -- | Go to Step 5 | |
5 | Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement . Did you complete the replacement? | -- | -- | |
