Engine Coolant Temperature Sensor: Inspection

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Measure the resistance according to the value(s) in the table below.

Standard resistance

RESISTANCE SPECIFICATION

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

NOTE: When checking the engine coolant temperature sensor in water, keep the terminals dry. After the check, wipe the sensor dry.

If the resistance is not as specified, replace the engine coolant temperature sensor.

Fig 1: Measuring Resistance Between Engine Coolant Temperature Sensor Terminals