Possible Causes
| Possible Causes |
|---|
| ECT SIGNAL CIRCUIT INTERMITTENTLY SHORTED TO VOLTAGE |
| ECT SIGNAL CIRCUIT INTERMITTENTLY SHORTED TO GROUND |
| ECT SIGNAL CIRCUIT INTERMITTENTLY OPEN |
| SENSOR GROUND CIRCUIT INTERMITTENTLY OPEN |
| ENGINE COOLANT TEMPERATURE (ECT) SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .