Engine Coolant Temperature (ECT) Sensor
- A malfunction in the engine coolant temperature sensor circuit will set a related DTC. For testing procedures, see TESTS W/CODES - 1.6L article. An out-of-calibration ECT sensor may not set a DTC. Use following procedure to test sensor calibration.
- Remove engine coolant temperature sensor. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION table. Using ohmmeter, measure resistance of engine coolant temperature sensor at designated temperatures. Replace ECT sensor if resistance is not within specification. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE table.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION
| Application | Location |
|---|---|
| Prizm | On Left Side Of Engine, In Engine Coolant Housing |
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| -4 (-20) | 10,000-20,000 |
| 32 (0) | 4000-7000 |
| 68 (20) | 2000-3000 |
| 104 (40) | 900-1300 |
| 140 (60) | 400-700 |
| 176 (80) | 200-400 |