Engine Coolant Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Partially insert the sensor into the water and warm up the water.

Measure the resistance between the terminals.

Standard resistance

ENGINE COOLANT TEMPERATURE SENSOR

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

Fig 1: Inspecting Engine Coolant Temperature Sensor

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

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