Hi

Happy days are here.. van is now running... traced fault finaly to pin bg2 of central ecu plug a green and blue thin wire. Wire runs from engine bay fuse box black multi plug pin 9, along ns inner wing to engine control unit.. the wire itself is a 12v feed. Wire was heavily corroded and when pulled broke apart..after cutting back to good wire and soldering together comms are now back and van starts.. thanks for all your replies, have helped to point me in the right direction..