I recently purchased a 07 300 touring all wheel drive with 3.5 L V6. It has 45k miles and was sitting for some time. It had critters living in trunk and behind glove box judging by nut shells n poo in both locations. Most of which was in the trunk. I have many non communicating modules that seem to report to the BCM. They are as follows.
U0199 drivers door Module,U0200 passenger door module, U0208 heated seat module, U0212 steering cloumn module, U110A steering column can bus C. The last one was found in the antilock module. Considering a used and reprogrammed BCM Hoping it’s not a wiring issue. Also have a P0778 in the TCM but believe that to a separate issue. Anyone have some solid advice for decent troubleshooter?

 

have you erased the codes and this is what comes back on?

 

They are the codes that have returned. The driver and passenger doors do not function electrically the heated seats do not work and none of the functions on the steering column work either. The ABS is not hearing from the steering angle sensor, and I am uncertain whether the steering column control module Passes that signal along to the ABS module. I repaired the fuel injection harness between the firewall and the back of the engine. That’s something munched on. I’ve found no damage to the wiring inside the car but I examined only a small amount that I could access

 

I'm gonna go out on a limb here. You need to find where your critter friends have been dining. I'll bet you have massive wiring issues.

 

I was hoping there was a common thread between those modules I should be looking for. Do they share a common power source “fuse”? is the can bus configuration of a ring or Daisy chain style making a single break put multiple modules out of communication? Lastly, does the steering angle sensor data go directly to the ECM/BCM or is it sent around on the can bus from one of the modules? I was hoping to use this information to streamline my troubleshooting. Answers to these questions or any other helpful information is welcome and much appreciated. Thx in advance to all participating.

 

Test the switched power to the modules.