Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
ENGINE COOLANT TEMPERATURE (ECT) SENSOR COMPONENTSINSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
a. Disconnect the sensor connector.
b. Remove the 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 and connect the connector.
5. FILL RADIATOR WITH ENGINE COOLANT