ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0]

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.

ECT sensor No.1

Resistance Inspection

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0].)

3. Disconnect the ECT sensor No.1 connector.

4. Remove the ECT sensor No.1 using the SST. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

5. Place the ECT sensor No.1 in water with a thermometer, and heat the water gradually.

6. Measure the resistance between ECT sensor No.1 terminals A and B.

• If not as specified, replace the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Specification (Reference)

ECT (°C {°F})	Resistance (Kilohms)
20	Approx. 2.45
80	Approx. 0.318

ECT sensor No.2 (U.S.A. and CANADA)

Resistance Inspection

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

2. Lift up the vehicle.

3. Remove the front under cover. (See FRONT UNDER COVER REMOVAL/INSTALLATION.)

4. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0].)

5. Disconnect the ECT sensor No.2 connector.

6. Remove the ECT sensor No.2 using the SST. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

7. Place the ECT sensor No.2 in water with a thermometer, and heat the water gradually.

8. Measure the resistance between ECT sensor No.2 terminals A and B.

• If not as specified, replace the ECT sensor No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Specification (Reference)

ECT (°C {°F})	Resistance (Kilohms)
20	Approx. 2.45
80	Approx. 0.318