Structure and inner electrical connection
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
Vacuum and ambient pressure are both present at the electro-pneumatic changeover valve. The engine control determines whether to relay system vacuum to the vacuum unit. There are only two working positions, on and off.
| Item | Explanation |
|---|---|
| 1 | Electric changeover valve, bypass flap |
PIN REFERENCE
| Pin | Explanation |
|---|---|
| Terminal 15N | Switch off terminal 15N with after-run, voltage supply |
| SIG | Activation of electric changeover valve |