Cougar V6-153 2.5L DOHC VIN L SFI (2001)
Cabin Air Filter: Description and Operation
Air Distribution And Filtering
The purpose of the air distribution system is to route air to the designated registers. This is accomplished when air enters the plenum through the
fresh/recirculated air inlet and is routed to the desired outlets by use of distribution doors. The incoming stream of fresh air is passed through a pollen
filter and is cleaned of pollen and dirt particles.
The air distribution system consists of the heater core, air conditioning (NC) evaporator core, A/C blower motor and all of the distribution doors. All
of the air is mixed inside of the plenum assembly and distributed depending on the distribution door positions.
Air ducts route air to specific areas of the air distribution system. These areas are the floor ducts, panel registers, side window demisters, and defrost
nozzles. The panel registers are adjustable and are used to "aim" the discharged air to a required area. The floor ducts, side window demisters, and
defrost nozzles are non-adjustable.
The distribution door positions are determined by the control components. The distribution doors open and close air flow passages inside the air
distribution system to establish air flow direction. There are two distribution doors inside the plenum assembly, panel/defrost door and panel/floor
door. The panel/defrost door can be positioned to either block off or allow air to the panel ducts or defrost ducts. The panel/floor door can block off or
allow air to the panel/defrost ducts or the floor duct.
