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Have you looked at any diagrams to see if the door itself has a ground? I've never looked but it's possible?
BCM Programming 2013 Ram 1500
- Thread starter Swims43
- Start date
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- Joined
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- AK Trucks Tuned 5.7
Tipm can cause similar issues with one thing then all the sudden you’re in a no start situation. It will come down to testing every circuit and tracing wires. A lot of the time it’s one wire broke at a connector
Swims43
Junior Member
Yeah, it seems like it's isolated to the driver door harness somehow. Everything else connected to the BCM works. So either a wire or a connector is messed up. Now I'm just trying to find the harness for sale. Dealer wants like 500 for it.
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Harness may not fix it. Throwing parts at it is not diagnosing. Getting a wiring diagram and back probes is a lot less expensive. Can bus errors could be in a tail light causing weird stuff. I had one last week that was giving transmission errors and glow plug errors. It turned out to be a corroded connector at the rear of the truck
NitroHvy
Junior Member
Have you tried replacing the door module? I’m telling you, I have a 2013 1500 4WD 5.7. A cpl of my wireless modules failed then the main WIM failed.
You stated in your OP that a diagnostic showed ’loss of communication to module A’. That is the door wireless door module. It costs $150.00 genuine Mopar. Super easy to replace. Your tech should test it. There is a test built-in from the WIM that will ping each module to test for reception.
Sounds like a wireless module issue to me.
You stated in your OP that a diagnostic showed ’loss of communication to module A’. That is the door wireless door module. It costs $150.00 genuine Mopar. Super easy to replace. Your tech should test it. There is a test built-in from the WIM that will ping each module to test for reception.
Sounds like a wireless module issue to me.
DutchRamRepair
Junior Member
Plug in the replacement bcm.
You car wont start, but you might be able to do some tests.
Worry about programming later.
You could disconnect the abs and pcm, if you are worried about vin changing issuess.
There is a reset function, in Alfaobd, to renew the replacement bcm.
You might need that, before you are able to change the bcm vin.
You car wont start, but you might be able to do some tests.
Worry about programming later.
You could disconnect the abs and pcm, if you are worried about vin changing issuess.
There is a reset function, in Alfaobd, to renew the replacement bcm.
You might need that, before you are able to change the bcm vin.
jdasilva
Junior Member
Also in case anyone has multiple faults at the same time like: no radio, rear left taillight short, no ambient temp, front windows not working.. Check that all the modules in the vehicle are working before changing out the BCM. Like drivers door module, trailer brake module, e.t.c. Hopefully this helps someone out.
