2009 Cummins ISX CM871 communication error? or not?

[trucklogger2]

Did you guys open up ESA to look for clues? It could help. also as I am finding out with my 09
is there is green goblins in most of the harnesses on the modules like the modules behind the gauges in the dash that runs signals and windows and door locks and such.This is probably from bad ground engine to frame.

Also take a look at CECU under coffee cup holder right next to accelerator pedal, which is also above your abs module; look at the contacts in the harness and tap on cecu also with key on and check voltage- as this is multiplexing with your ecm signals as Rawse was saying.

Spread the prongs in your ecm power harness too if you haven'i and add dielectrc grease too.