Possible Causes
| Possible Causes |
|---|
| COOLANT BYPASS VALVE CONTROL CIRCUIT OPEN/HIGH RESISTANCE |
| COOLANT BYPASS VALVE GROUND CIRCUIT OPEN |
| COOLANT BYPASS VALVE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .