Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor Location:

LOCATION
The coolant temperature sensor is located in the coolant passage of the intake manifold.

Coolant Temperature Sensor:

CONSTRUCTION
The Coolant Temperature Sensor is a thermistor type sensor.

Engine Coolant Temperature Sensor (ECT) Circuit:

OPERATION
As engine temperature increases, sensor resistance decreases. The ECU monitors engine temperature by the sensor output voltage and provides optimum fuel enrichment when the engine is cold.