Loose bcm wire

[Daverous]

Was recalibrating tire size with alfaobd, all went well on round one but when I went to adjust a second time(2665mm) it wouldn't clear faults or complete rolls appropriatly.

I poked my head under the dash and found this loose wire that wasn't pinned. I don't even know which harness diagram to start with so I thought I'd ask. Anyone have a clue? Perhaps the guru @Jimmy07 can rescue me yet again.

Right now it's still throwing a bunch of esc faults and rolls says tire size not programmed. May be totally unrelated, I'm really not sure.

 

[Jimmy07]

It’s hard to tell for sure because of pic exposure, but can you verify the main color/stripe color?
I looks to me like beige/violet?

 

[Daverous]

Correct, sir. It appears to be beige and purple Not much light under there.

 

[wsutard1]

Correct, sir. It appears to be beige and purple Not much light under there.

Take a pic looking at your dash from the drivers seat and then circle the approximate location of the plug. Then someone with your exact truck can look under and confirm if they also see this wire free floating or if they see it in the harness in question.

 

[Jimmy07]

It’s most likely the bed light switch signal wire from the blue BCM connector. This wire usually gets removed if it is present when the mopar bed light kit gets installed after the fact.

 

[Daverous]

That'd be it then. Dealer installed bed lights for me when I bought it.
Any clue on the lack of rolls taking? Letting it sit a minute and trying again.

Thanks yet again, man. You're a national treasure around here.

 

[wsutard1]

Wow.

 

[Daverous]

Posted in another thread, but I was able to fix it.

Quick update for those that get stuck in this loop. This process worked for me, and I have everything cleared and was able to update the size a third time without issues. I cannot guarantee these steps will work for everyone, or that I made all the correct changes, but it IS working for me and was repeatable.

All steps through AlfaOBD:

ABS>DT 2019+> ECS In Plant Mode> Disable
ABS>DT 2019+ > EPB In Plant Mode> Disable
BCM> MY2020>Chassis- Electonic Parking Brake> Yes
ABS > DT 2019> Service Procedures > Assembly Check

I have zero idea why my BCM and ABS system set those parameters differently after the process. I was only able to find it due to saved logs I had. Regardless, it worked. I cleared all faults during the process as well and they have not returned.