Leons driving me crazy now!

[Nick warren]

I brought my leon cupra as a quick run about with a small electrical fault with the passenger window. when i turned up none of the drivers door electrics were working, no electric mirrows.. windows or central locking. all that works is the speakers. now the central locking works all the other doors and boot, and the individual window switches work on their own doors. IF i disconnect the door loom and reconnect it i can use the drivers window for about 5 mins then it stops. but only the windows still no mirrors or central locking or control of other windows.
i have brought a new CCM and replaced that... exact same symptoms, even coded my key to the new unit. I've then got a new window switch pack and thats made no difference. I've brought a new window motor (as i was told all the electrics run through that) STILL no change. i've now brought a replacement door loom... now | admit I tested that by just plugging it in behind the kick panel and plugging in the window switch pack and window motor, not a full door swap. but it still wouldn't control the other windows, lock the doors only worked the drivers motor until I turned off the ignition.
ive about given up as normally replacing modules and a loom normally remedies everything. is there something i'm missing here as i'm desperate to get it working now. i done a vag com fault scan and it shown the following.

Address 46: Central Conv.
Controller: 1J0 959 799 AH
Component: 4U Zentral-SG Komf. 0001
Coding: 04096
Shop #: WSC 00028
6 Faults Found:
01334 - Door Control Module: Rear Right (J398)
49-00 - No Communications
01331 - Door Control Module: Driver Side (J386)
49-00 - No Communications
00931 - Locking Module for Central Locking: Rear Right (F223)
54-00 - Incorrectly Equipped
00930 - Locking Module for Central Locking: Rear Left (F222)
54-00 - Incorrectly Equipped
00929 - Locking Module for Central Locking: Front Passenger Side (F221)
54-00 - Incorrectly Equipped
its almost like a common communication line is faulty but I cant find any information on what this could be or how the system works.

 

[sockpuppet]

My initial thought was broken door loom or failing that, it's short circuiting somewhere before the door.

Do you get any other weird electrical gremlins or is it only the door, is there any other errors on other modules when you code read?

 

[Nick warren]

I'm going to do a full system scan when my vag com works properly I don't think any other codes shown up. I haven't noticed any other little gremlins. Just this door. I might remove all the door cards and check the modules in case there's an incorrect one. A quick look on ebay and it looks like you could put a drivers motor on any door I don't know if this could be interfering. failing that might have to buy a new set of locks and slowly replace everything on the list. Although I don't know why a faulty door lock works and would affect everything else.

Sent from my SM-G955F using Tapatalk