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

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

INSPECTION




1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR

3. INSPECT ECT SENSOR RESISTANCE




Using an ohmmeter, measure the resistance between terminals 1 (E2) and 2 (THW).
Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.

4. REINSTALL ECT SENSOR
Install a new gasket to the ECT sensor.

5. FILL RADIATOR WITH ENGINE COOLANT