While you wait for answers, we may have found some information which could help you.
Click here for Turn Key TurningWiring to relay between fuse and starter motor?
Battery drain (or alternator or electrics?) on Citroen Berlingo 2008?
Citroen dispatch rear door lock issue?
does the berlingo bend valves when the timing belt snaps?
No accessory mode electrics unless engine running?
citreon berlingo 2.0 hdi van?