Engine Coolant Temperature (ECT) Sensor
- Engine Coolant Temperature (ECT) Sensor is a thermistor which changes resistance proportionate to temperature changes.
- Resistance increases as coolant temperature decreases and decreases as coolant temperature increases.
- Engine Coolant Temperature (ECT) Sensor inputs coolant temperature to the PCM.
Engine Coolant Temperature (ECT) Sensor is threaded into heater outlet fitting or coolant passage.