Vacuum Circuit 7 (Main Air Flap)

NOTE: Ignition is OFF.

1. Remove left cover under instrument panel.
2. Remove optional switch.
3. Remove optional switch cover.
4. Remove glove box.

Switchover Valves ACC:

Main Air Flap Vacuum Element And ETR Switch:

5. Pull red vacuum line from switchover valve (17) and connect to vacuum tester.
6. Evacuate to approx. 400 mbar vacuum (12 in. Hg) while paying attention to operation of main air flap and watch tester gauge.
7. If the reading on the tester changes, check vacuum line and vacuum element (42) for leaks and replace as required.
8. Install cover for optional switch.
9. Install optional switch.
10. Install left cover under instrument panel.
11. Install glove box.

Vacuum Circuit Test 7(VII):

LEGEND
17 = Switchover valve for main air flap
42 = Vacuum element for main air flap (flap "open")



Color Code of Vacuum Lines
rt = Red