canbus faults. ABS, ECM, power stearing all loosing canbus

[krishna]

yes, that i learnt by chance. during one particular drive, i lost power steering and speed dials and the DIS display was all "F". For some reason i had to use horn and suddenly everything came back online.

I identified the wires which are creating the problem. one pair is coming from engine side and the second is coming from the CIM side. if i use a jumper to patch them directly engine and RPM dial is okay but the speed and ABS remains offline.

[Jon1796]

Have you got a wiring diagram.
yes as you patched them together they’d work like that but everything in engine bay goes through abs that’s why no speed or abs.
id track the canbus line (+ -)from to abs cim and try and find where it’s failing.

[krishna]

I do not have wiring diagram. it would be great if someone can share it. i will track the canbus line from and to CIM. most like it is near the ABS connector since pressing it fixing the problem for a while.

[Jon1796]

I did post some for some one else if you read it.

http://www.vxronline.co.uk/forum/sho...-diagram/page2

[krishna]

Thanks Jon!!

[krishna]

Here is a recording of canbus recovering after the use of horn.. i dont understand what happens when horn is pressed.

https://youtu.be/v4V90NvQGQY

[Jon1796]

Have you checked engine bay earth’s.


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