Vw transporter t4 hi had the same problem just found the fault it was a brcken wire causing relay109 to drop out.
Vw t4 sliding door adjustment.
In this short video i not only swap over a vw t4 sliding door but i also cover how you can adjust the alignment of your sliding door if it does not line up from the outside or if you can see light.
The same principal is used for other vans like the.
If the door of your vw doesn t sit flush with the car body the door buffer needs adjustment.
Then swing open the door 45 degrees.
In this video i replace the middle roller of a vw t4 transporter see description for links to rollers.
Shows components and explains how to remove sliding door.
Brief explanatory video of what to address to maintain a sliding door on a vw bay window bus.
It was in the upper of the two harnesses on the bulkhead above the air filter if you pull back the outer sleave and check the thin black white wire for a break i think you will find your problem.
First slide the door all the way back until it hits the rubber stops.