I have the following issues.
lost communications with radio
lost communication with hvac control module
lost communication with sdars

how do I check the can bus circuit to find my wire problem?

 

Sounds like your totally integrated power module went. Can your Edge CTS check for codes?

 

I can get them....
The problem started when I disconnected all power, grounds and charge air preheater. The battery cable ends were trashed so I put military grade eyelets on the cables and reattached everything with fresh wire or cable ends. I left the air charge heater and solenoid off. So the only connections I did not re-install are the two wire going to the solenoid.