2008 Aspen. CAN bus B(-) circuit. See image. Who has a guess on where the b(-) wire is broken?
I'm thinking left and right front doors at the hinge.
Everything (modules) work as designed. Updated Heated seat Module from 0460267AD to …AE.
That fixed the (intermittent) No bus message and flashing instrument panel.
It seems the AD would not switch to "single wire mode". The AD also rattles when shaken. The AE does not.
Installing the AE module also cleared six or so other CAN B faults,
All the modules on Can B are communicating with scan tool,
but the scan tool freezes at trying to erase the fault in both the old (AD) and new (AE) Heated Seat Module.
After trying to erase the fault in the new AE module, the scanner now freezes for a bit while Auto Scanning, then skips it and deletes from the list but it still shows in report; u1107.
So looking at Circuit Diagram and remaining faults..., who has a guess where the broken B(-) wire is?
https://drive.google.com/file/d/17UB...ew?usp=sharing

 

Is this for the seat modules? I would start by looking at seat tracks for any shorted wires.

 

No, not for seat module. Only module under seats is memory module under D seat.