Coolant Temperature Sensor

NOTE: Coolant temperature sensor may also be referred to as Engine Coolant Temperature (ECT) sensor.

Measure coolant temperature sensor resistance between sensor terminals. For resistance specifications, see Fig 1 and Fig 2.

Fig 1: Coolant Temperature Sensor Chart (Corolla, Land Cruiser, MR2 & Supra)

Fig 2: Coolant Temperature Sensor Chart (Except Corolla, Land Cruiser, MR2 & Supra)