Bi-Level Mode

When Bi-Level is selected, air is delivered through the instrument panel outlets and to the floor outlets. With the Mode actuator in neutral, vacuum is applied to the defrost actuator through the Green vacuum line. Vacuum is bled off the actuator and will hold the Vent Door stationary in the half open position. The defroster actuator will pull closed the Defroster Door and open the Heater Door through mechanical linkage.