Resistance Inspection
WARNING:
- When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
- Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
- Disconnect the ECT sensor connector.
- Remove the ECT sensor using the SST. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
- Place the ECT sensor in water with a thermometer, and heat the water gradually.
- Measure the resistance between ECT sensor terminals A and B.
- If not as specified, replace the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
ENGINE COOLANT TEMPERATURE SENSOR SPECIFICATION (REFERENCE)
| ECT (°C {°F}) | Resistance (Kilohms) |
|---|---|
| 20 {68} | Approx. 2.45 |
| 80 {176} | Approx. 0.318 |