Automatic Door Locks
#21
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Originally Posted by Technical Ted
1st remove the relay & give it a shake. There shouldn’t be any loose parts rattling around in there.
2nd check for continuity between terminals B & D
3rd check for continuity between terminals E & D
There are two relays inside. Next 2 checks have to be done with each relay energized.
Energize the lock relay by connecting the A terminal to the positive battery terminal & the D terminal to the negative battery terminal.
Check for continuity between terminals C & B (I’m expecting your problem to be here or the 2nd check above)
Energize the unlock relay by connecting the F terminal to the positive battery terminal & the D terminal to the negative battery terminal.
Check for continuity between terminals C & E
2nd check for continuity between terminals B & D
3rd check for continuity between terminals E & D
There are two relays inside. Next 2 checks have to be done with each relay energized.
Energize the lock relay by connecting the A terminal to the positive battery terminal & the D terminal to the negative battery terminal.
Check for continuity between terminals C & B (I’m expecting your problem to be here or the 2nd check above)
Energize the unlock relay by connecting the F terminal to the positive battery terminal & the D terminal to the negative battery terminal.
Check for continuity between terminals C & E
-Corey
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Sorry Corey, I wasn't meaning to hijack your thread. I was posting my problem in here because I was thinking we may have the same basic problem. I did find mine to be the relay that Technical Ted described. Mine is under the drivers seat.
Part # VBA-2002, 12065122
Thanks Technical Ted for the help![Hail](https://www.gmforum.com/gm/images/smilies/hail.gif)
BTW, I pulled my seat and then I pulled the carpet back to get to it.
Here are some pictures of my relay and what I found. Sorry the pictures didn't turn out that great.
I think mine may have gotten wet somehow. You can see a white film in the corner of the plastic shell. It'* also on the bottom of the circuit board.
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures001.jpg)
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures003.jpg)
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures004.jpg)
Part # VBA-2002, 12065122
Thanks Technical Ted for the help
![Hail](https://www.gmforum.com/gm/images/smilies/hail.gif)
BTW, I pulled my seat and then I pulled the carpet back to get to it.
Here are some pictures of my relay and what I found. Sorry the pictures didn't turn out that great.
I think mine may have gotten wet somehow. You can see a white film in the corner of the plastic shell. It'* also on the bottom of the circuit board.
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures001.jpg)
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures003.jpg)
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures004.jpg)
![](https://i120.photobucket.com/albums/o169/whitecrystal1/95Bonnevillepictures002.jpg)
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