Auxiliary A/C System

Component Location:

A/C Lines And Heater Tubes - Vehicle Underbody, Vans Except RV:

A/C Lines And Heater Tubes - Vehicle Underbody, Vans And Cutaways:

An optional auxiliary air conditioning and heating system is available on these vehicles. The system is a one-piece unit that is located on the LH side of the vehicle between the side windows and the floorpan, behind the rear wheel well. The auxiliary air conditioning and heating system can also be equipped with an optional blower motor switch, mounted in the rear of the vehicle.

All of the auxiliary A/C-heater system components are serviceable from the inside of vehicle.

Air Distribution
Vehicles with trim have a vertical duct that supplies air to the integral headliner air conditioning duct. Air is supplied to the passengers through six adjustable registers. The heater floor duct is integral to the side trim panel and has four fixed registers for optimum heater air distribution. The trim panel connects directly to the auxiliary A/C-heater unit.

Vehicles without trim do not have the overhead A/C registers, heater floor ducts or registers. A unique A/C register is used to distribute air-conditioned air, and a heater outlet duct assembly distributes heated air.

System Airflow
The A/C-heater function selector switch (located in the front A/C control) controls the air distribution for both the front and auxiliary systems.
- When the A/C-heater function selector switch is in the VENT, FLOOR or MIX position, the auxiliary A/C-heater system will direct air to the floor. The damper door is driven by a vacuum control motor to its predetermined position.
- When the A/C-heater function selector switch is in the VENT position, the auxiliary A/C-heater unit will be in a recirculating function and will deliver interior air to the discharge registers.
- When the A/C-heater function selector switch is in the NORM A/C or MAX A/C position, air-conditioned air is distributed through the A/C registers.