Fresh Air Flap Open

Air Volume Switch (S3) At Blower Stage 1, Fresh-recirculated Air Flap Open 100% Fresh Air






S3 Air volume switch
Y3/1 Switch-over valve connector block fresh/recirculated air flap 2-fold
y1 Switchover valve for fresh/recirculated air flap (long stroke)
y2 Switchover valve for fresh/recirculated air fiap (short stroke)
30 Vacuum connection at intake manifold
31 Non-return valve
32 Vacuum reservoir
33 Left vacuum element for fresh/recirculated air flap
34 Flight vacuum element for fresh/recirculated air flap

Color code for vacuum lines:
mgn median green
hbl light blue
drt dark red
gn green
rt red
gr gray
ws white