Air Duct: Description and Operation

Air Distribution System Description


Vacuum regulates sir flow through the system. Depending on the mode selected, the mode valves mix and direct either cooled, heated, or outside air through the air ducts. The various modes of operation are as follows:

RECIRC AIR
This mode limits the amount of fresh air that enters the vehicle be recirculating most of the air inside the vehicle. This setting helps cool the air quickly and helps to limit odors from entering the vehicle. The air id delivered through the I/P outlets.

OUTSIDE AIR
This mode draws fresh air in from the outside and delivers the air through the I/P outlets. This setting is used while defrosting or defogging the windows in order to help clear moisture.




BI/LEVEL
This mode draws air from the outside. This mode directs air into the vehicle in two ways:
^ Cooler air is directed toward the upper body through the I/P outlets.
^ Warmer air is directed through the lower outlets.




UPPER
This mode directs most of the air through the I/P outlets and a small amount of the air to the lower outlets.




LOWER
This mode directs air into the vehicle in two ways:
^ Most of the air is directed through the lower ducts to the floor area of the vehicle.
^ Some of the air is directed toward the windshield and the side window vents.




DEFOG
This mode directs air in the vehicle in two ways:
^ Air is divided between the windshield and the lower outlets.
^ A small amount of the air id directed toward the side window vents.

This mode is useful when fog appears on the windshield or side glass due to rain or snowy conditions.




DEFROST
This mode directs most of the air to the windshield for quick removal of fog or frost from the windshield. A small amount of air is also directed toward the lower and side window outlets.