I connected my scope and no signals on bus. I'm guessing the CEM is responsible for that? None of his videos I've watched so far tell you how to tell what device is responsible for bus arbitration and power.

I'll check that out.
Thanks!

2004 V70 that I'm trying to help a friend out with. I'm using a Vident scanner that is supposed to communicate with all the modules but I get a communication failure no matter what module I try to read. The problem with the vehicle is no crank. It shows a "severe" air bag problem on the da...