Typical Malfunction Thresholds
ECT Sensor cold start monitor:
ECT SENSOR COLD START MONITOR
| ECT sensor value change |
Less than 5°C (9°F) |
ECT Sensor soak monitor:
ECT SENSOR SOAK MONITOR
| Difference between current ECT sensor value and previous ECT sensor value when engine stopped |
Less than 5°C (9°F) |