When Monitored And Set Conditions
This diagnostic runs continuously when the following conditions are met:
- With the ignition on.
- No Battery system voltage or ASD Relay DTCs present.
- The OBD Vent Valve is commanded on.
Set Conditions:
- The Powertrain Control Module (PCM) detects that the OBD Vent Valve Driver circuit voltage is too high.
Default Actions:
- The MIL will illuminate.
| Possible Causes |
|---|
| OBD VENT VALVE DRIVER CIRCUIT SHORTED TO THE FUSED ASD RELAY OUTPUT CIRCUIT |
| OBD VENT VALVE DRIVER CIRCUIT SHORTED TO VOLTAGE |
| OBD VENT VALVE |
| POWERTRAIN CONTROL MODULE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .