crazy electrical issue
Thread Starter
Intermediate
Joined: Dec 2011
Posts: 39
Likes: 0
crazy electrical issue
I made a related topic earlier about my headlight acting crazy. Today, while I was driving with the lights off, my driver side light flipped up and down on its own, my spedometer shot down to 0 MPH and my heater turned (all this happened at the same time)
Does anyone know why this happened and what I can do to make sure it doesn't happen again?
Does anyone know why this happened and what I can do to make sure it doesn't happen again?
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
First things first, go here: http://www.c5forum.com/ayc/dtcdic.php
Follow that procedure and write down all the codes you have, including any H and C that may be with them (ex, PCM - P1153 H C) and come back here and post the codes you're seeing.
Once we know what codes you have we can better help you troubleshoot.
Follow that procedure and write down all the codes you have, including any H and C that may be with them (ex, PCM - P1153 H C) and come back here and post the codes you're seeing.
Once we know what codes you have we can better help you troubleshoot.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You probably had more symptoms BUT, that sounds a LOT like a Serial Bus glitch. Most of the time when you have a serial bus issue, the BCM got wet or damp OR the LDCM, RDCM or SCM modules corrupt the data line for a wide range of reasons. If the LDCM or RDCM is the cause of the issue, one or both of the door controls wont work properly.
The connectors for the doors have been found to have damaged female pins and cause power to the modules to turn on and off on and off on and off etc.......
The connectors for the doors have been found to have damaged female pins and cause power to the modules to turn on and off on and off on and off etc.......
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
First things first, go here: http://www.c5forum.com/ayc/dtcdic.php
Follow that procedure and write down all the codes you have, including any H and C that may be with them (ex, PCM - P1153 H C) and come back here and post the codes you're seeing.
Once we know what codes you have we can better help you troubleshoot.
Follow that procedure and write down all the codes you have, including any H and C that may be with them (ex, PCM - P1153 H C) and come back here and post the codes you're seeing.
Once we know what codes you have we can better help you troubleshoot.
100%
The codes will tell a LOT more of the story! Read and post..
Thread Starter
Intermediate
Joined: Dec 2011
Posts: 39
Likes: 0
28-TCS C1255 H EBTCM Internal Malfunction
BO-RFA C2121 C TPM System Programming Malfunction
BO-RFA C2120 H TPM System Malfunction
BO-RFA U1016 H Loss of Communications with PCM
BO-RFA U1064 H Loss of Communications with BCM
BO-RFA U1096 H Loss of Communications with IPC
My only problem now is that the driver side headlamp goes up and down every time I turn the lights off, or turn the car off. It usually closes halfway, but it's random in the position it wants to take.
BO-RFA C2121 C TPM System Programming Malfunction
BO-RFA C2120 H TPM System Malfunction
BO-RFA U1016 H Loss of Communications with PCM
BO-RFA U1064 H Loss of Communications with BCM
BO-RFA U1096 H Loss of Communications with IPC
My only problem now is that the driver side headlamp goes up and down every time I turn the lights off, or turn the car off. It usually closes halfway, but it's random in the position it wants to take.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
You really need Bill again to assist you but his first response might be the cause. Now you could have more than one issue present where looking for a single cause might not work. Follow Bill's advice about the door accordian tube connector for lose pins/sockets there. Also clear the codes and see what codes come back. You might have a failing headlamp switch, which are a high failure item. The TPM programming might need to be done again and completed properly.
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