Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

ENGINE COOLANT TEMP. (ECT) SENSOR INSPECTION
1. DRAIN ENGINE COOLANT.
2. REMOVE ECT SENSOR.



- Disconnect the ECT sensor connector.
- Using a 19 mm deep socket wrench, remove the ECT sensor and gasket.

3. INSPECT ECT SENSOR.

Fig. 174b:

- Using an ohmmeter, measure the resistance betweer the terminals.
- Refer to the graph in Fig.174b for specified resistance.
- If the resistance is not as specified, replace the ECT sensor.

4. REINSTALL ECT SENSOR.
- Install a new gasket to the ECT sensor.
- Using a 19 mm deep socket, install the ECT sensor.

Torque: 20 Nm (14 ft.lb)

- Connect the ECT sensor connector.

5. REFILL WITH ENGINE COOLANT.

See also:
- Refer to the Trouble Code Charts for DTC P0115 and DTC P0116, under the Diagnostic Charts.