Galant L4-1997cc 2.0L DOHC (1990)
Engine Coolant Temperature Switch (A/C): Description and Operation
LOCATION
The coolant temperature sensor is located in the thermostat housing.
Coolant Temperature Sensor
CONSTRUCTION
The Coolant Temperature Sensor is a thermistor type sensor.
Engine Coolant Temperature Sensor 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.