Grand Voyager V6-3.8L VIN L (1999)
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
ENGINE COOLANT TEMPERATURE SENSOR-PCM INPUT
The engine coolant temperature sensor is a variable resistor with a range of -40° C to 129° C (-40° F to 265° F).
The engine coolant temperature sensor provides an input voltage to the PCM. As coolant temperature varies, the sensor resistance changes
resulting in a different input voltage to the PCM.
When the engine is cold, the PCM will demand slightly richer air/fuel mixtures and higher idle speeds until normal operating temperatures are
reached.
The engine coolant sensor is also used for cooling fan control.
Engine Coolant Temperature Sensor
Engine Coolant Temperature Sensor
The sensor is installed next to the thermostat housing.
