Resolved Hello. New. Cant connect to engine. To transmission, convenience yes

[Xantantris]

Hello. VW Golf 1.6 AVU, 2002. Could connect fine before. Computer hard drive failed and had to reinstall. Now it will not connect to engine module. It does connect to automatic transmission, abs, convenience modules. Car running well. Using generic blue VAG KKL cable. Saw the post on changing port latency to two. However, in Windows 10 it appears that we can no longer access that. I downloaded the driver from ftdi, no change. Hope someone has run into this before and can help. Thank you. I tried searching for several days but have not found a solution. I apologize in advance, as probably this has been answered before.

 

[Uwe]

We are unable to provide much support for connection problems with generic interfaces for VCDS-Lite that we did not design, manufacture, or sell.

Note that on an Mk.4 Golf, all diagnostic-capable modules are connected directly to the K-Line on pin 7 of the OBD-II socket, except the ECU (01-Engine). It is connected to the W-line, which goes to the instrument cluster, which must connect K and W, but there are failure modes there where it won't. So one thing you can try is to remove the instrument cluster and put a wire jumper between the K and W pins. I believe they are on different connectors. If you can then access 01-Engine, the problem is not with your computer or your interface; it's with your instrument cluster.

-Uwe-

 

[Xantantris]

Thank you very much Uwe. I really appreciate your help. Hopefully I'll be able to do this tomorrow. I just looked at the schematic diagram and found the K, W...;-)

 

[Xantantris]

We are unable to provide much support for connection problems with generic interfaces for VCDS-Lite that we did not design, manufacture, or sell.

Note that on an Mk.4 Golf, all diagnostic-capable modules are connected directly to the K-Line on pin 7 of the OBD-II socket, except the ECU (01-Engine). It is connected to the W-line, which goes to the instrument cluster, which must connect K and W, but there are failure modes there where it won't. So one thing you can try is to remove the instrument cluster and put a wire jumper between the K and W pins. I believe they are on different connectors. If you can then access 01-Engine, the problem is not with your computer or your interface; it's with your instrument cluster.

-Uwe-

Lol....só I bridged the K and W lines and VCDS lite was able to access the engine module. Of course, all sorts of warnings and lights came on the dashboard. I then undid the W / K connection. The warnings were gone, and of course I was able to access the engine module just fine. As I expected from my temperamental and playful Golf buddy. So, it could have been that the connectors were not making adequate contact, or who knows. Thank you again, as without your guidance I did not know how to proceed.

 

[Uwe]

it could have been that the connectors were not making adequate contact

That is a very plausible explanation. Hit the connectors on the back of the cluster with some contact conditioner. I like Stabilant 22 or DeoxIt.

-Uwe-