C4GP MY2007 Like a Christmas tree

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

kebibg
Posts: 1
Joined: 05 Apr 2023, 05:42

C4GP MY2007 Like a Christmas tree

Post by kebibg »

Hi masters,
there is a problem with my C4 for a very long time and I can't solve it. While driving, from time to time (3-4 times per 100km), the handbrake, ABS, and ESR indicators light up and remain lit until you turn off the car.
Recently this also started happening after unlocking the car and opening the door. In this case, just the handbrake and ABS light up. When these indicators are on, the parking brake does not work and there is no way to park the car. The car has a piloted gearbox and an electric handbrake.
I will add the diagnostic sheet as a follow-up. Please ignore engine ECU errors.

And here's what we've tried so far.
1. All wiring in the engine compartment to BSI was untangled and checked for damage to the integrity of the cables. - status OK
2. Replacing the Fusebox in the engine compartment BSM
3. Replacing the ESP81 module
4. Replacement of the FSE module (handbrake).
5. Untangling and checking the cables from BSI to FSE - status OK

Only the BSI module remained unchanged.

Any ideas and help are welcome. I know I'm probably looking for someone who has had this happen to them and solved the problem.


Regards

P.S.
Sorry for the many files.
Attachments
4dc7c2d4ed3968750f73aee87dd38a06-15.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-14.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-13.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-12.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-11.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-10.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-9.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-8.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-7.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-6.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-5.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-4.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-3.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-2.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-1.jpeg
4dc7c2d4ed3968750f73aee87dd38a06-0.jpeg