Rear Mode Valve

The Rear Mode Valve is controlled by the Rear Mode Valve Vacuum Actuator. When the Mode Selector is in "MAX," "NORM," "VENT" or "DEFROST," vacuum is applied to the Rear Mode Valve Vacuum Actuator which moves the Rear Mode Valve to position A. This allows air to flow to both the A/C and the Heater Outlets. In any other mode, the Rear Mode Valve is in position B.