For 1990-2009 cars only
Circuit Description
When the ignition switch is turned ON, the sensing and diagnostic module (SDM) will perform tests to diagnose any malfunctions within itself.
After completing the internal tests, the SDM will check its voltage supply. If the voltage supply is too high or too low, the SDM may not receive the proper information when it attempts to use a known current to test the air bag module circuits.
Conditions for Setting the DTC
The SDM receives voltage higher than a specified value.
Step | Action | Yes | No |
|---|---|---|---|
|
Caution: Refer to Battery Disconnect Caution in the Preface section. | |||
1 | Check the vehicle's charging system. Is the charging system OK? | Go to Step 3 | Go to Step 2 |
2 | Repair the charging system. Is the repair complete? | -- | |
3 |
Is the repair complete? | -- | |
