Electrical Issue

B112B:87 - Steering Wheel Module: Missing Message - Sets when the BCM loses communication with the SASM over the LIN.

B1130:87 - Light Switch Module: Missing Message - A continuous memory DTC that sets when the BCM has lost communication with the headlamp switch over the LIN circuit.

U0214:00 - Lost Communication With Remote Function Actuation: No Sub Type Information - A continuous memory DTC that sets in the BCM if push-button start function messages received from the RFA module over the MS-CAN are missing.

Ignore the last code, that's a normal/common fault that doesn't cause problems.

The headlamp switch and the steering angle sensor module (SASM) use separate LIN buses to communicate to the BCM. Both of those aren't working currently. The low speed on the wipers uses a separate wire that acts as a failsafe. It is not the clockspring because these signals don't pass through it. Both LIN busses are wired directly to the BCM with no splices or other connectors. The SASM is the module behind the steering wheel that the stalks are connected to.

Because both LIN busses are down, first check the ground resistance between the BCM and the battery. A loose ground/connection/battery cable could cause this. A damaged wire could also cause it. Try changing the tilt on the steering column and see if that has an effect. If so then you have a bad wire in the column.

Going further is going to require someone who's familiar with electrical troubleshooting to look for shorts and opens.

jpohlman said:

I would still go back to the BMS pigtail and sensor since that's where the LIN buses receive their power from. After that maybe a cracked fuse on the front of the battery compartment.

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How's it gdoing I have a similar issue as your kinda brushing the serfice or the issue. Well a weird thing ran into we'll I was installing a subwoofer and amp well just installed a fuse panel myself for said equipment well as I just got done wiring it all up. I reached over to grab the cover and before I could put the cover on the fuse panel, my head necklace droop down into the amp and gave me a nice little buzz but it made a huge noise went across the speaker system and then in result of that I now have issues I don’t have any power to my AC unit the entire dash the radio I mean the speedometer fuel gauge I have no dash lights but the car will run in the turn signals and lights work. I’ve tested the fuse plate or whatever that is outside the battery box and I’ve got continuity and voltage on both sides of the fuse or I guess it’s called mega fuse and all my relays in and everything seems to be fine. As far as that goes I can’t really tell where this issue is coming from. I’ve got a fully charged battery from what I can see. I believe that all those mega fuses are good and the relays I was wondering is there a relay in addition to the ones that are actually in the box because there is a little blue mounted what appears to be a relay to me outside and it’s continuously ticking so i’m kind of stumped here I got powered all three fuse boxes batteries good and those mega fuses seem to be testing fine I don’t know what is the first item that the powers distributed to that would be rendering me from getting any power to like the secondary part of the vehicle leak like I said, I’ve got lights turn signals in the car runs, but that’s it. in the car runs, but that’s it. But the code I get is a p068A and it's bringing me here idk please help if you've got any ideas id be grateful