While you wait for answers, we may have found some information which could help you.
Click here for Van 04 PlateServo ?
Wiring to relay between fuse and starter motor?
Battery drain (or alternator or electrics?) on Citroen Berlingo 2008?
Citroen Dispatch 1.9 d in limp mode?
Citroen Berlingo 1.6 hdi will not start with key?
central door locking on Citroen Dispatch van not working properly?