Engine Coolant Temperature Sensor - Description

DESCRIPTION





The Engine Coolant Temperature (ECT) sensor (2) is used to sense engine coolant temperature. The ECT sensor protrudes into an engine water jacket.

The ECT sensor is a two-wire Negative Thermal Coefficient (NTC) sensor. Meaning, as engine coolant temperature increases, resistance (voltage) in the sensor decreases. As temperature decreases, resistance (voltage) in the sensor increases.