Citroen C4 GP 2009 Central Locking Issue

[AdamC]

Afternoon all, the central locking has been a t..t since I bought the car and won't work on key fob for both front door but it opens all the other if I unlock it with the key from drivers door the passenger door stays locked and the rest open, if I unlock with key from passenger side the drivers door stays locked but rest open... I can't seem to find the issue, I can hear both motors engaging I've taking wiring out doors and can't see any splits and I've checked all fuses.... Anyone think of anything else other then it going to be crushed as its driving me nuts ....

Thanks in advance

[mickthemaverick]

Have you performed a BSI reset?

[AdamC]

Yep, I'm running out of options other then crushing the dam car

[mickthemaverick]

Which doors lock/unlock when you use the lock all button inside the car?

[AdamC]

All the doors lock with button but all doors unlock all the car when you open them

[mickthemaverick]

That sounds like there is a wire or two reversed somewhere, what was the last work done before the faults appeared?

[PaulC5]

Water ingress in the front of this car is common so it might be there is some water damage causing a problem.

[AdamC]

That sounds like there is a wire or two reversed somewhere, what was the last work done before the faults appeared?

The fault has been there since I bought the car so unsure sadly.

[AdamC]

Water ingress in the front of this car is common so it might be there is some water damage causing a problem.

I shall check around the front tomorrow and check for any corrision, thank you.

[AdamC]

Still having issues with this, Anyone have a wiring diagram for the central locking at all?

[mickthemaverick]

If you can tell me your RPO number I can try and find the diagram This link and the 2 following posts show you where to find that if you don't already know: viewtopic.php?p=852428#p852428

[AdamC]

I just took a picture, have another issue which I'll open a new thread for

Thank you.

[mickthemaverick]

I had to select from a couple of options so this diagram includes remote dead locking and electric operated child locks. If that is wrong let me know:

c4 pic central locking.pdf

Copied from Sedre Backup

(3.47 MiB) Downloaded 57 times

You can find the diagram decoder at:
viewtopic.php?p=782862#p782862

[AdamC]

I shall study threw it, see what's going on, Appreciate that.