Heating and A/C Systems

HEATING AND A/C SYSTEMS

A manually controlled dual zone heating-A/C system and an automatically controlled dual zone heating-A/C system with rear blower controls is available on this model.

To maintain the performance level of the heating, ventilation and air conditioning (HVAC) system, the engine cooling system must be properly maintained. The use of a bug screen is not recommended. Any obstructions in front of the radiator or A/C condenser will reduce the performance of the A/C and engine cooling systems.

The engine cooling system includes the radiator, thermostat, radiator hoses and the engine coolant pump.





All vehicles are equipped with a common heater, ventilation and air conditioning (HVAC) housing (1). The system combines air conditioning, heating, and ventilating capabilities in a single housing mounted within the passenger compartment under the instrument panel.

- Evaporator temperature sensor (2)
- A/C evaporator (3)
- Blower motor (4)
- Recirculation-air door and actuator (5)
- Blower motor resistor (MTC) or blower motor power module (ATC) (6)
- Blend-air door(s) and actuator(s) (7)
- Heater core (8)
- Mode-air doors and actuator (9)

Based upon the system and mode selected, conditioned air can exit the HVAC housing through one or a combination of the three main housing outlets: defrost, panel or floor. The defrost and the panel outlets are located on the top of the housing and, the floor outlet is located on the bottom of the housing. Once the conditioned air exits the HVAC housing, it is further directed through molded plastic ducts to the various outlets within the vehicle interior. These outlets and their locations are as follows:

- Defroster Outlet - A dual, centrally mounted outlet delivers air for defrosting the large windshield. An integral grid is molded into the center of the instrument panel top cover to prevent objects from falling into the duct.
- Demister Outlets - There are two side window demisters that aid in defogging and defrosting the front door windows. One demister outlet is located at each outboard end of the instrument panel top pad, near the belt line at the A-pillars.
- Instrument Panel Outlets - There are four panel outlets in the instrument panel, one located near each outboard end of the instrument panel facing the rear of the vehicle, and two located near the top of the instrument panel center bezel.
- Front Floor Outlets - There are two front floor outlets, one located above each side of the floor panel center tunnel below the instrument panel.
- Rear Floor Outlets Rear passenger vents are located in the center floor console and have separate blower fan control switch.