Control Module Part Number: 037 906 259 J
Component and/or Version: MOTRONIC M5.9 HS V01
Software Coding: 00002
Work Shop Code: WSC 00000
1 Fault Found:
00545 - Engine-Transmission Electrical Connection
29-00 - Short to Ground
There are no codes in the TCM. The transmission had just been rebuilt by a local shop, but it is still difficult to get it to downshift out of overdrive. I did all the basic checks & additionally have tried cleaning and realigning the throttle body and resetting the trans to basic settings. The code will return after a few minutes of driving so I need info on the 29-00 circiut. Anyone have info on which this is, as my databases are lacking in this area?
The only notation that I could find is the same as the text on the DTC. So my suggestion would be to erase it and drive it. Odds are it will come back, but at least you'll be sure. Then, the only thing to do is to look for a broken wire between the TCM and the ECM. You'll need a wiring diagram to check for continuity in the wiring harness connecting the two.
Since the trans has been out recently, you might double/triple check the ground connections on the engine and trans. We all know that VW ground connections are solid and reliable, but you never can tell.......
The code does return, however the CEL doesn't come on. I've seen the same code number (00545) before but with a different circuit descriptor such as 31-10, not the 29-00 I have. Have you ever seen reference to these circuit numbers as it will save me alot of time not to have to check all of them.