Citroen c4 abs trouble

[Thal07]

Hi, I've just joined this forum as I'm having trouble with a C4. For context I'm a mechanic and the car is a customer's that came in as a breakdown. The electric handbrake will not apply at all, it is showing esp errors and abs faults. I have an autel which will not connect to the abs unit so I'm unable to read fault codes. I'm suspecting a broken wire somewhere in the harness but every fuse box diagram I come across seems to be wrong for this car. It is a 2011 Citroen c4 1.6hdi. Would anyone have a correct diagram of the fuses and wiring relating to the abs module or any ideas of where I should start? Thank you!!

[PaulC5]

Have you checked the fuses in the handbook but it will not include wiring ? If you do not have the handbook it can be seen through this topic viewtopic.php?t=63208 Fuses seem to start at p193 but I could not see one listed for the brakes.

If the car was a Picasso these are known for the wiring to get damaged as it goes through the boot area but I do not know if this applies to the hatchback.

[PaulC5]

An example topic with 3 pages on C4 Picasso rear brake problems due to wiring viewtopic.php?p=838424&hilit=picasso+handbrake#p838424