Engine Coolant Temperature Sensor: Inspection

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Measure the resistance between the terminals.

Fig 1: Inspecting Engine Coolant Temperature Sensor

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Resistance

CONDITION SPECIFIED CONDITION

Condition	Specified Condition
Approx. 20°C (68°F)	2.32 to 2.59 k
Approx. 80°C (176°F)	0.31 to 0.326 k

If the result is not as specified, replace the sensor.

NOTE: If checking the ECT sensor in the water, keep the terminals dry. After the check, wipe the sensor.