kiedybl

Hi,

Original Westfalia hook.

I tried to connect the AHM 4R E-Series module number 7160 6850497-01 following the diagram like in the picture. I am showing this module number after VIN, so I bought one.
Image


The bundle is perfectly made as it should be according to the original. Everything is elegantly fastened.

CAN L and CAN H as well as the rear stop were taken from the harness which is located on the right side of the rear seat.
Yellow is CAN L and black is CAN H.

After connecting the module, the following errors occur. K-CAN cable error.
Image

K-CAN cable error
I thought I had mistaken the CAN, but even after the swap, the same is also true.
After unplugging the module, the errors disappear.
Anyone had a similar problem ??

gman6262

Did you twist your CANBUS wires?

All CANBUS wire must be twisted pair cable, even short lengths (longer than 1 inch / 2 cm). The twisted pair wire is an essential part of how the differential mode filtering works on CANBUS, and without it, the signal can be easily distorted.

kiedybl

The CAN Li CAN H wires are soldered and insulated with the wires in the car. According to the hook connection instructions, CAN L and CAN H signals should be taken from the place marked X15013 / X15014.



I took the signal from this place





Somewhere I read that it may be a damaged driver?

As for you have your circles together like this Sunday. Is it so important? I let go of the 3 cables in the conduit. CAN L and CAN H and brake light. No twist.

kiedybl

I did what you said and twisted the two wires together from start to finish. Unfortunately, it didn't help.

kiedybl

I solved the problem. It turned out that I used the wrong schematic and the CAN L and CAN H pins did not match with the AHM module. I used this diagram, the AHM module is detected and works correctly after connecting the trailer.