Engine Temperature Sensor: Testing and Inspection

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

INSPECTION




1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
Using a 19 mm socket wrench, remove the sensor and gasket.




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 sensor.

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

5. FILL WITH ENGINE COOLANT