Hi all , struggling to get my head round this one , the van is perfect except there is no remote locking and i cannot get into bcm via tech 2 as i have a can error. there is a new bcm in ending in code bb, theold one is fg and am told this is a superceded part no. but i am trying to meter the can wires with the ohms meter on the white and green but not sure what readings are right or wrong and if there are any certain ways to check this out, thankyou for any advice in advance, regards Jeff.

I don't know if this will help. We had a fault with our tech2 where it would read every box on any vaux apart from body control modules. It was the cable at fault. It might be worth checking the tech2 on another corsa.

Wiring fault traced to the k line / brown and white wire that runs from dlc to bcm, there was a red and orange sparred onto this wire which feeds the immobiliser unit .
high resistance on this wire stops comms to the bcm, disconnected wire , into bcm first time and remotes re programmed, thanks .