Circuit diagram / Wiring diagram searched V50 11/2006 2.0D

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Any body here to help me out?

I have a elektrical problem in the front of the motor-wiring. maybe one or more an broken inside from exhaust intake-switches to the main Wiring.
So some sensors or elktromagnetic valve working wrong or not a bit.

Now I want to find out, wich cable is broken.. and should be repaired.