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.
These 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. The SDM inspects the wiring connection to the passenger side air bag module by letting the perpetual current flow through the internal circuit and verify the resistance.
Conditions for Setting the DTC
The resistance of the passenger side air bag deployment loop is over 3 ohms.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
|
Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section. Caution: Refer to SRS Sensing and Diagnostic Module Handling Caution in the Preface section. | ||||
1 | Visually inspect any damage for the passenger side air bag wiring and connector. Is the air bag wiring damaged or the connector disconnected? | -- | Go to Step 2 | Go to Step 3 |
2 | Repair the wiring damage or connect the connector. Is the action complete? | -- | -- | |
3 |
Is the resistance equal to the specified value? | 0 ohms | Go to Step 5 | Go to Step 4 |
4 | Replace the air bag wiring. Is the replacement complete? | -- | -- | |
5 |
Is the DTC removed? | -- | Go to Step 6 | |
6 | Replace the passenger side air bag module. Is the replacement complete? | -- | -- | |
