Engine Coolant Temperature (ECT) Sensor
Disconnect ECT sensor wiring harness connector. Using DVOM, measure resistance between sensor terminals at specified temperature. See ECT SENSOR SPECIFICATIONS table. Replace sensor if resistance is not as specified.
ECT SENSOR SPECIFICATIONS
| Temperature °F (°C) | Ohms |
|---|---|
| 68 (20) | 2200-2700 |
| 104 (40) | 1000-1300 |
| 140 (60) | 500-650 |
| 176 (80) | 250-350 |