Air Distribution

There are two sources of air available for both the Electronic Automatic Temperature Control (EATC) and the manual climate control air distribution systems:
- outside air
- recirculated air

EATC Air Distribution
Recirculated air is only used during MAX A/C, AUTOMATIC and OFF modes.

Air distribution within the vehicle is controlled by the electronic automatic temperature control system in the AUTOMATIC mode, but it can be overridden by the driver if desired. Airflow control doors are used to direct airflow within the A/C evaporator housing and plenum/floor chamber. Vacuum control motors are used to position these airflow control doors.

For additional information on the control components, refer to Section Heating and Air Conditioning.

For additional information on air distribution doors and airflow through the system in each mode, refer to System Operation. System Operation

The air distribution system is designed to provide airflow from the defrost nozzle when no vacuum is applied to any of the vacuum control motors. This is done to prevent a situation where defrost cannot be obtained due to a system vacuum leak.

Air enters the passenger compartment from the:
- instrument panel A/C registers.
- heater outlet floor duct.
- windshield defroster hose nozzle.
- side window demisters.
- rear seat airflow duct.

Passenger compartment air is exhausted from the vehicle through open windows or luggage compartment air vents.

Manual Climate Control Air Distribution
Recirculated air is only used during MAX A/C and OFF modes.

Air distribution within the vehicle is controlled by the position of the function selector switch. Airflow control doors are used to direct airflow within the A/C evaporator housing and plenum/floor chamber. Vacuum control motors are used to position these airflow control doors.

For additional information on air distribution doors and airflow through the system in each mode, refer to Control Components.

The air distribution system is designed to provide airflow from the defrost nozzle when no vacuum is applied to any of the vacuum control motors. This is done to prevent a situation where defrost cannot be obtained due to a system vacuum leak.

Air enters the passenger compartment from the:
- instrument panel A/C registers.
- heater outlet floor duct.
- windshield defroster hose nozzle.
- side window demisters.
- rear seat airflow duct.

Passenger compartment air is exhausted from the vehicle through open windows or luggage compartment air vents.