2006 VW Jetta transmission wiring trouble.

[ben4372]

I have a car that I reluctantly purchased from a friend to help him out. Thought it would be easy enough to get it on the road to give to my nephew. It was in a fender bender and the TCM module wiring got damaged. I fixed that but still cant get the TCM to talk to the car. I may need help from a wiring specialist or at least a good wiring diagram. The one in the Haynes book is incomplete. Any sources for a good diagram I mostly need to find out where the blue/black wire gets power. Thanks.

[ben4372]

I think I gave up on looking for a decent wiring diagram. Any recommendations on a great VW wiring expert on the west side?

[StagLefty]

You may have already looked at this ?
https://www.google.com/search?q=2006+volkswagen+jetta+TCM+wiring+diagram&tbm=isch&imgil=toNd5uGRNJQ_YM%253A%253BXfgsRNyrxBxoCM%253Bh ttp%25253A%25252F%25252Fforums.tdiclub.com%25252Fs howthread.php%25253Ft%2525253D334614&source=iu&pf=m&fir=toNd5uGRNJQ_YM%253A%252CXfgsRNyrxBxoCM%252C_&usg=__7T6Ddp_A55WZgVKH0ic7ERv3bX8%3D&biw=1270&bih=587&ved=0ahUKEwjVj7G87ubNAhUHwmMKHbwEAuMQyjcIPQ&ei=fC6BV9XhAoeEjwO8iYiYDg#imgrc=toNd5uGRNJQ_YM%3A

[TFOGGER]

I dunno if he'd be willing to take it on, but maybe talk to Anuthee at Dieselland. He's mostly focussed on TDI stuff, but he might be convinced to work on it. And, he's literally across the street from my shop.


http://www.dieselland.net/

[Delfuego]

I think it may be more computer related than wiring related. Not ruling the wiring out, but the amount and complexity of computers in newer cars is nuts. I would take it to someone with access to VAG-COM (no jokes) software. The VW software may find a bad computer or another that will not communicate. If that all checks out, I would then look at wiring. Once you start pulling the wiring apart it gets messy and expensive fast. Lokk at the computers first, now a days it almost always related to the computers, or a sensor, or firmware, etc, etc.

Also if you replaced the computer, it will have to be flashed to match the car. Cannot just swap them out anymore.

I have a VW shop / master mechanic I would recommend, but he is in Boulder. That being said. only go to someone that knows their shit with VW & German cars. I learned the hard on this and will never take a vehicle to a non specialized mechanic again. Good luck.

[brutal]

Is the car driveable (like in limp mode)?

Hardey's Motorworks in Parker is the best if he's willing to tackle. Harder to work on stuff that someone else has already "tried"...

VW and Audi specialist, factory trained.

Probably 80% of VW/Audi enthusiasts have a legit VAG-COM setup as do I. :D

Lots of cool things you can recode depending on the platform and I can pull/clear codes, etc.

[ben4372]

I think it may be more computer related than wiring related. Not ruling the wiring out, but the amount and complexity of computers in newer cars is nuts. I would take it to someone with access to VAG-COM (no jokes) software. The VW software may find a bad computer or another that will not communicate. If that all checks out, I would then look at wiring. Once you start pulling the wiring apart it gets messy and expensive fast. Lokk at the computers first, now a days it almost always related to the computers, or a sensor, or firmware, etc, etc.

Also if you replaced the computer, it will have to be flashed to match the car. Cannot just swap them out anymore.

I have a VW shop / master mechanic I would recommend, but he is in Boulder. That being said. only go to someone that knows their shit with VW & German cars. I learned the hard on this and will never take a vehicle to a non specialized mechanic again. Good luck.
I'm with you on finding a specialist. I had a bit of wiring chewed up so I replaced that harness with a factory part. I have found wiring diagrams for the trans but nothing that shows how it interacts with the whole car. In my youth working on cars the wiring was simple enough that the diagram would show most of the car on one page. Being that the wiring was so mangled I'm not ruling out a damaged module or relay. I'm not looking to get in over my head, I know a VW specialist could get it done quicker than I ever could.

[waxthis]

Been a life saver for me...

CLICK ON ME (http://forums.vwvortex.com/forumdisplay.php?5003-Technical-(VW-Audi))

[Dave]

3zero3 motorsports in Wheat Ridge really helped me out when I was dumb enough to own a Jetta and the ECU went bad on me.

https://www.3zero3motorsports.com/

[brutal]

Should also mention Autobahn Premier Service on Kalamath.

Randy is a good guy. I should have also recommended him.

Before Hardey had his shop, Randy helped me out after getting jacked around from another fly by night "dealer" on a messed up GIAC Tip Chip coding in my A6 that wasn't working. We finally had to get a GIAC rep to install semi custom code in it from GIAC to fix the problem.

[ben4372]

Thanks for all the suggestions and recommendations, except the google one. I'm making progress I think. It's at least drivable now. I used to work up near the 3zero3 shop and some of their techs have some neat stuff. I thought they were more of a tuner shop. Even if it never get back to 100% I learned my lesson. So much for being a people's car.