Air Distribution And Filtering

Air Distribution and Filtering

NOTE: This vehicle is factory equipped with a cabin air filter.

There are 2 sources of air available to the air distribution system:

- Outside air
- Recirculated air

The HVAC module will drive the air inlet mode door to the full RECIRC position, the full fresh air inlet position, or may stop at a mid-position based on the HVAC module cooling/heating requirements.

Recirculated air is used only when the RECIRC function is selected in any mode other than DEFROST, or when required by the HVAC module in the AUTOMATIC mode during maximum cooling demands.

Air distribution within the vehicle is determined by the dual-zone Electronic Automatic Temperature Control (EATC) system in the AUTOMATIC mode. The air distribution mode can be overridden by the driver if desired. Airflow mode control doors are used to direct airflow within the heater core and evaporator core housing. Electric mode door actuators are used to position these airflow mode doors.

The heater core and evaporator core housing uses 2 separate temperature blend doors. This allows individual temperature settings to be selected for the RH and LH air outlets. The airflow mode doors are not partitioned for separate RH and LH airflow positions. Therefore, the airflow mode will always remain similar for the RH and LH sides of the vehicle regardless of the temperatures selected.

Air enters the passenger compartment from the:

- instrument panel registers.
- floor duct.
- windshield defroster.
- side window demisters.
- rear footwell duct.

Passenger compartment air is exhausted from the vehicle through open windows or body air vents located below the rear lamp assemblies.


Cabin Air Filter

NOTE: A cabin air filter must be installed for correct climate control system NVH performance.

The vehicle is factory equipped with a cabin air filter. The cabin air filter is positioned at the blower motor inlet and filters both fresh and recirculated air. The cabin air filter can be accessed though the glove compartment.

For cabin air filter maintenance intervals, refer to Maintenance Schedule.