Typical Malfunction Thresholds
ECT sensor cold start monitor:
TYPICAL MALFUNCTION THRESHOLDS - ECT SENSOR COLD START MONITOR
| ECT sensor value change | Below 5°C (9°F) |
ECT sensor soak monitor:
TYPICAL MALFUNCTION THRESHOLDS - ECT SENSOR SOAK MONITOR
| Difference between current ECT sensor value and previous ECT sensor value when engine stopped | Below 3°C (5.4°F) [varies with ECT of last trip engine stop] |