Heating and Air Conditioning - Description

DESCRIPTION

A Manual Temperature Control (MTC) single zone type heating-A/C system is standard equipment on this vehicle.

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. See Cooling system for more information before opening or attempting any service to the engine cooling system.





All vehicles are equipped with a common HVAC housing (1). The heating-A/C system combines A/C, heating and ventilating capabilities in a single HVAC housing mounted within the passenger compartment behind the instrument panel. The HVAC housing includes:

- a heater core (2)
- blend-air doors and actuator (3)
- an A/C evaporator (4)
- a blower motor resistor (5)
- a recirculation-air door and actuator (6)
- a blower motor (7)
- an evaporator temperature sensor (8)
- mode-air doors and actuators (9)

Based upon the 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 panel outlets are located on the top of the HVAC housing and the floor outlet is located on the bottom of the HVAC housing. Once the conditioned air exits the HVAC housing, it is further directed through molded plastic ducts to the outlets within the vehicle interior. These outlets and their locations are as follows:

- Defroster Outlet - A single large defroster outlet is located in the center of the instrument panel top cover, near the base of the windshield.
- Side Window Demister Outlets - There are two side window demister outlets, one is located at each outboard end of the instrument panel face near the A-pillars.
- 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 at the top of the instrument panel center bezel.
- Floor Outlets - There are two floor outlets, one located above each side of the floor panel center tunnel near the dash panel.