1.6hdi dv6 turbo solenoid valve diagram or photo needed

[scirocc0]

recently my 407 1.6hdi has lost boost , i think it could be because i fiddled with the pipes on the solenoid valve ,
i saw a loose pipe near it so i reconnected it but im unsure if its even for the solenoid ,as it boosted fine before i connected it ,

im looking for a diagram or a photo of a turbo solenoid valve so i can see what ive done wrong or right with the pipes

thanks