Air Door Vacuum Solenoid Valve: Description and Operation

SWITCH OVER VALVE UNIT (Y11, 15-POINT):

Switchover Valve Unit (Y11, 15 Point):

- The 15 point switch over valve unit controls the air flap vacuum elements. In this first-ever application, the switchover valve unit is controlled by serial data transmission via one circuit, also called multiplexing. A specific sequence of different voltage impulses are used to control the valves. The electronic circuitry of the valve unit recognizes these voltage impulses and actuates the appropriate valve