Engine Coolant Temperature (ECT) Sensor
Sensor is located in engine, near alternator. With sensor disconnected, measure resistance between sensor terminals. Refer to the ECT SENSOR RESISTANCE table. Replace sensor as necessary.
ECT SENSOR RESISTANCE
| Temperature | Ohms |
|---|---|
| -4°F (-20°C) | 14,600-17,800 |
| 68°F (20°C) | 2200-2700 |
| 104°F (40°C) | 1000-1300 |
| 140°F (60°C) | 500-650 |
| 176°F (80°C) | 290-350 |