Golf V 2007 Estate: Issues with Window Lifter, Central Locking, and Switch Illumination

As in the topic of Golf V 2007, the estate car does not work, the window lifter, the central locking and the illumination of the window lifting button on the rear left side. There are wires to the bundle: thick brown mass - there, thick red power - there, red - white - loudspeaker, brown and black - loudspeaker, two white wires, and the colors are given from the pillar to the door. The most important are the white ones, one of them in front of the pillar is purple and white and goes to the driver's door (I suspect it is a control from the driver's door panel), the other one in front of the ankle is red and black and here the trail breaks off when it enters a thick beam at left pit. No communication after connecting the computer. The module was purchased, another functional, although the controls were good (both work in the right door and there is communication), the switch is also located in the right door and works correctly. I am asking for a hint regarding the red / black and purple / white wires because I do not know which ones are communicated and where they are connected or where to get the signal for communication. Regards and I am asking for your suggestions.

Maybe the basic question, but did you check the fuses? Red and black is the power supply for the 12V module from the fuse box and purple and white goes to the front door module.

Added after 7 [minutes]:

So I remembered that the fuse is probably not because the left and right rear doors are probably on the same as I remember correctly. There is tension on that red and black?

tomasz sadowski wrote:

on the rear left side

Check if you have damaged wires in the driver's door grommet.

After checking your suggestions, I inform you that the harness in the manager's door is intact and no damage is visible, there is voltage on the red / black wire. I checked the cube once again and there is ground, power, after ignition and of course the speakers. There is continuity on the violet / white wire from the rear left door module to the front beam in the driver's door. I will disconnect the lock on the rear door, maybe it causes some complication. I am still asking for your suggestions. It turns out that there is communication on the violet / white wire. If you can take a look at the diagram where I can still look and what to check.

Added after 1 [hours] 52 [minutes]:

Problem solved CameR cap off your head you were right. After re-checking the cable library, the violet / white wire in the manager's door is damaged. Thank you for your help .