Vent Mode
When VENT is selected, air is delivered through the instrument panel outlets with a small amount of air delivered to the floor. Vacuum is applied to the
mode actuator through the Yellow vacuum line, and to the defrost actuator through the Green vacuum line. The mode actuator will pull, opening the Vent Door. The
defroster actuator will pull, closing the Defroster Door and open the Heater Door through mechanical linkage.