Heating and Air Conditioning: Locations

The compressor clutch relay is located in the Power Distribution Center (PDC) in the engine compartment.

The blower motor power module is only used in vehicles equipped with Automatic Temperature Control (ATC). It is located on the lower right side of the HVAC unit housing, and is controlled by the Body Control Module (BCM).

The evaporator temperature sensor is a temperature sensing element located at the coldest point on the face of the evaporator.

The in-car sensor thermistor is located inside of the ATC Control Head.

The blower motor and blower wheel are located in the passenger side end of the HVAC housing, below the glove box module.

The side window demisters direct air from the heater assembly through the outlets located on the top corners of the instrument panel, to the side windows.

The suction and discharge ports located on the cylinder head.

The "H valve" type Thermal Expansion Valve (TXV) is located at the point where the refrigerant lines join the a/c evaporator on the engine compartment side of the dash panel.

The receiver/drier is located in the engine compartment near the dash panel on the passenger side of the vehicle.

The evaporator, located in the HVAC unit, is cooled to temperatures near the freezing point.