Vacuum System
With the automatic air conditioning, all of the vacuum elements (38, 39 and 41- 48), which serve for air distribution, are controlled by the vacuum system.
Vacuum is present at the valve block (Y11) from the vacuum distributor block (36). The valve block (Y11) allows the vacuum to pass the control for the individual flaps (38, 39 and 41-48), depending on the setting on the pushbutton control module.