Citroen c4 picasso 2015 model back doors not working

[fontecno]

Hi guys good day, please am having a citroen c4 picasso 1.6 bluehdi feel 2015 model that the back door are not working. When I close the central door locking all doors will lock back the back doors remain open and it I open one of the back door all car doors will open. Please I need a full wiring diagram of the car if anyone can help I really appreciate car VIN number is VF7**************[VIN obfuscated, can be read by forum staff] I don't kn if it's wrong to post the VIN but I just did. Any other suggestions will be appreciated to get the solution. Thanks
Regards
Fon

[GiveMeABreak]

That 's not going to help you initially, as these vehicles have about 28 specific symptoms of the doors (front, rear, left & right) locking or not locking in various combinations.

You'll need to get it diagnosed with Diagbox to get the specific fault codes to help pin point the issue. These have advanced CAN wiring architectures and a diagnosis will be essential to fault find.

Have you wired in or added any electrical accessories lately, including radios or other accessories?

If you have recently disconnected or replaced the car battery for any reason then ensure you have followed this guide for re-connecting the battery to ensure there are no electrical faults:

BSI Reset / Battery Disconnect / Reconnect Procedure