Engine Coolant Temperature (ECT) Sensor
WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
Remove ECT sensor. Place ECT sensor and thermometer in a container of water. Connect ohmmeter between ECT sensor terminals. Slowly heat water. Observe resistance reading at specified temperatures. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR SPECIFICATIONS table. If resistance is not as specified, replace ECT sensor.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR SPECIFICATIONS
| Temperature F° (°C) | Ohms |
|---|---|
| 68 (20) | 2200-2700 |
| 176 (80) | 290-350 |