2009 C30 - Can bus with 120ohms

[brunotata15]

As some already know, my car is stopped with the immobilizer activated, does not recognize the ECM module.

After much researching, I found the network CAN HIGH on volvo VIDA by measuring the resistance on the connector odb2, the network should have resistance 55-60 ohms and mine is with 120ohms, it indicates that I have open circuit on the CAN network

My next step should be to check the can network wires through the wiring diagram and test the continuity of all the network wires or would have some way to identify more easily where this network "open circuit".

Thank you