As strange as it may sound, this is really happening. My passenger side window stopped working, so I removed the door card pulled out the glass winder, motor etc. Everything looked intact no corrosion. Confirmed that the motor is working after removing the control module. Greased the winder and put it all back together, now when I try to operate the window from the door and also from the master switch all the 4 door locks get actuated. So rechecked the door wiring harness and the pins all looks good.   Any experts here who can help me?

get a multi meter and start continuity checking the harness. 

that sounds like theres a break in a couple of wires that are shorting out, probably where the cable goes from the door into the a pillar.

check both front doors.

Checked the passenger door, all ok. Everything else is working. Is the convenience control module shot?

On 13/12/2020 at 14:41, skoda5232 said:

Checked the passenger door, all ok. Everything else is working. Is the convenience control module shot?

Try driver's side. 8 out of 10 times there's the culprit.

^^ As above, drivers door master loom may have issues.

And as above again, don't just assume it's fine by looking at it. You'll need to inspect the wiring behind the tape. Also, check the pins on the motor and into the block connect and the block connectors in the A pillar and B pillar.

All the wiring looks ok on both the sides. Will start with replacing the passenger side control module. Have managed to find an old one of a MK4 GTI. Even though the motor design is different the control module and the coupler looks similar, so my question is.. Is the module interchangeable with Octy? The stock part number is 1U6959801D. Plz share your suggestions..

Any idea on the interchangeablity b/n mk1 and MK4 Golf modules?

im not sure tbh, do they part numbers match?

No, the motor hardware is different. The control module looks the same.

Hi, this is the update after this experiment . Got the unit of a MK4 GTI, asn as discussed eaier the motor is completely different so removed the module and swapped with my old motor. Everything looked like it is working fine and finally installed it. Only problem noted was that when operating the windows when the switch is pressed down the window goes up and vice-versa. So as a solution I swapped the yellow wires of the switch coupler of the passenger side and it works fine now. Didn't bother the fiddle with the switch of driver side as I will be the only one driving the car. If needed the same can be done on the master switch also I think. Hope this information is useful.

do you have a pic with the yellow wire and what you swap ? you swap yellow with ...???? a pic will be grate, thank you in advance!