Vacuum Function Diagrams

4 Air flow switch driver's compartment
14 Switchover valve for fresh air-circulating air flap
15 Switchover valve for fresh air-air passenger compartment
30 Suction pipe connection
31 Check valve
32 Vacuum reservoir
33 Vacuum element (2-stage) fresh air-circulating air flap
34 Vacuum element (2-stage) fresh air-circulating air flap
35 Vacuum element for fresh air flaps, rear passenger compartment

Color Code Vacuum Lines:
bl = blue
ge = yellow
gn = green
gr = grey
rt = red
ws = white