Engine Coolant Temperature Sensor: Inspection

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Measure the resistance between terminals 1 and 2.

Resistance

RESISTANCE SPECIFIED CONDITION

Condition	Specified Condition
20°C (68°F)	2.32 to 2.59 kΩ
80°C (176°F)	0.310 to 0.326 kΩ

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 dry.

Fig 1: Measuring Resistance Between Terminals