Testing Vacuum Circuit IV

TESTING VACUUM CIRCUIT IV:
Vacuum Elements (42) and (43) for Main Air Flaps with dark red vacuum line.

Pushbutton Control Unit:

Vacuum Elements - Main Air Flaps (43):

1. Push function button "a".
2. Evacuate with tester (approx. 600 mbar) and read pressure gauge.
3. If readout on pressure gauge changes, test vacuum element (42) and (43) individually as well as dark red vacuum line and renew, if required.