Air Inlet Valve

The first valve in the air distribution system is the air inlet valve. This two-position valve controls the two air entrances which feed air to the blower motor. When RECIRC mode is selected, vacuum is applied to the air inlet vacuum actuator and the air inlet valve opens the entrance which supplies inside air from the passenger compartment. In this position, the air inlet valve partially closes the entrance for outside air so only a slight amount can enter. Re-circulating the cooled air inside the passenger compartment when the outside temperature is very high gives a faster cool down to a more comfortable temperature.

When OUTSIDE AIR mode is selected, the air inlet vacuum actuator is vented to normal air pressure and the air inlet valve completely closes off the entrance for inside air. Only fresh outside air is used in the system in this mode.