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Is it a 5 door or a 3 door and if it is a 5 dor has it got rear electric windows?
Thank you for waiting. I have attached a wiring diagram for your reference.
These systems work through a door control module in each door which controls everything from the door locking to the electric mirrors.
I suspect the problem could be with the Central Locking Motor Assy in the N/S/F door. You would need to remove the N/S/F door card to gain access to the Motor Assy. There will be a number of screws behing door handles etc and trim clips holding the door card on.
Once you have the door card off you should see a Black Plastic Box attached to the door. This is the Door Funtion Control Module. You need to check that the power is coming from this unit to the Central Locking Motor Assy. I would check the output from the Door Funtion Control Module first as it is easier to get to. Check the output from Connector B Terminal 2 for live / earth when operation the Central Locking (ensure that the door catch is in the closed position). Following this check Terminal 16 for the same. Following this check Terminal 1 for the same.
I have said to check all 3 for live / earth as I can't remember off the top of my head if iit is switched live or earth!
If this all checks out ok then you can check at the Lock Motor Connector Terminals 1, 2 and 9 for the same. If this all check outs ok then the Door Lock Motor / Catch Assy will need replacing.
Hope this helps.
No problem at all.