Front

All models are equipped with a common HVAC housing (9) that combines A/C and heating capabilities into a single unit mounted within the passenger compartment. The heating-A/C system is a blend-air type system. The blend-air doors (11) control the amount of conditioned air that is allowed to flow through, or around, the heater core (14). The A/C system is designed for the use of a non-CFC, R-134a refrigerant and uses an A/C evaporator (5) to cool and dehumidify the incoming air prior to blending it with the heated air. A temperature control determines the discharge air temperature by operating the blend door actuator (4) , which moves the blend-air doors. This allows an almost immediate control of the output air temperature of the system. The mode door actuators (12) operates the mode-air doors (10 and 13) which direct the flow of the conditioned air out the various air outlets, depending on the mode selected. The recirculation door actuator (3) operates the recirculation-air door (2) which closes off the fresh air intake and recirculates the air already inside the vehicle. The electric actuators are connected to the vehicle electrical system by the HVAC wire harness (1). The blower motor (8) controls the velocity of air flowing through the HVAC housing by spinning the blower wheel (6) within the HVAC housing at the selected speed by use of the blower motor resistor block or power model (7), depending on application.

The front HVAC housing must be removed from the vehicle and disassembled for service of the A/C evaporator, recirculation-air door, mode-air doors, blend-air doors and linkage.