500SEC (140.070) V8-5.0L (119.970) (1993)
Air Door Vacuum Solenoid Valve: Description and Operation
Switchover Valve Unit (Y11)
Vacuum Distribution Block (36)
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The control of the individual air flaps occurs via the switchover valve unit (Y11, 15-connection) and via the single and two-stage vacuum
elements. The switchover valve unit is actuated via multiplex control (serial data transfer) from the pushbutton control unit (N22).
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The vacuum supply is provided by vacuum distribution block (36) located in the front passenger footwell.
Connector Assignment
Connector Assignment:
1. Rear passenger compartment climate control
2. Backrest lock, model 140 coupe (SEC)
3. Not used
4. Not used
5. ACC system switchover valve unit (Y11)
6. Manifold vacuum assist (pneumatic control unit A37/A37/1)
7. Manifold vacuum
8. Not used
9. Not used
10. Not used
11. Not used
12. Not used
13. ACC vacuum storage reservoir