Hello,

Sorry for my bad English, I 'm French and I have very big problem with Zafira B 1.9 CDTI

The garage has changed the battery before the problem and connect negative to positive.
Each electronic module are broken.

I change UEC from ASTRA H and REC from ZAFIRA B and new CIM OPEL
I have no communication with ECU, ABS and CIM

Opel garage has tried another CIM and another UEC but still the same problem
When i enter with OP-COM in UEC i found 0V in status but i have battery

I tested CAN H and CAN L line. The line is not cut
I found between CAN H and ground 3V and between CAN L and ground 6V
Normally it's 2.5V fro CAN H and 2.5V for CAN L

The problem is why I have not communication with CIM ?

What is te modul for the CAN ? Instrument panel ? Can Gateway (VAG) ??

Thank you very much