Vacuum Function Diagram

VACUUM FUNCTION DIAGRAM FOR AUTOMATIC CLIMATE CONTROL, FUNCTION SELECTION NORMAL COOLING - RECIRCULATED AIR
as of 9/85

Y7 Switchover valve unit:
1 Switchover valve for fresh air/recirculated air flap (short stroke)
2 Switchover valve for fresh air/recirculated air flap (long stroke)
3 Switchover valve for footwell flaps
4 Switchover valve for center outlet flap
5 Switchover valve for defroster outlet flaps (long stroke)
6 Switchover valve for diverter flap
7 Switchover valve for defroster outlet flaps (short stroke)
35 Vacuum Connection at intake manifold
36 Check valve
37 Vacuum reservoir
38 Vacuum element for defroster outlet flaps (flaps "closed")
39 Vacuum element for footwell flaps (flaps "closed")
40 Vacuum element for center outlet flap (flap "open")
41 Vacuum element for diverter flap (flap "open")
42 Vacuum element for fresh air/recirculated air flap (flap in position for 20 % fresh air)
hbl light blue
drt dark red
ge yellow
mgn middle green
gr grey
rt red
ws white
sw black