Fresh Air Cannot Be Switched Off

Fresh Air Cannot Be Switched Off







Test condition
- Vehicle is running, vacuum is built up

Test procedure
- Check whether button -3- for fresh air and recirculating air valve was pressed.
- Check components and functions according to the following:
1 - Fresh air and recirculating air flap
- Fresh air intake blocked
- Check Fresh Air/Recirculating Flap Two-Way Valve (N63) using wiring diagram.
- Vacuum unit -2- has pulled in
- Check vacuum hoses as per vacuum hose connection diagram Vacuum and Vapor Hose Diagrams