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[Solved] Citroen C3 Door Lock Issue: Central Locking Failure, Actuator Stroke, Key Opening, Wiring

darecki81 11112 12
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16263049
    darecki81
    Level 7  
    Hello, I'm new here, so I will describe the problem quickly, I hope for your understanding.
    As in the topic, the problem is the central one in the Citroen c3, namely after pressing the opening button you can hear some actuator stroke, but no door opens.
    When you try to open it with the key, only the driver's door opens (on the right, because it's an Englishman).
    When closing, it is a bit different, because the door opened with a key closes with the central.
    I checked the jumper and fuses inside and out.
    There is no short circuit on the wires in the door.
    However, after cutting the cube from the lock, I noticed that the current was on the white and red wires, but only after pressing the closing button.
    However, when I press "open" the current does not appear on any wire.
    Someone may have had a similar problem ??
    Thanks in advance for your help.
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  • Helpful post
    #2 16263316
    piwko
    Level 25  
    Relays in the computer body to be replaced. I was fixing something like that.
  • #3 16263350
    darecki81
    Level 7  
    Do you have a diagram?
    Or is it possible to buy another computer, for example from a scrap?
  • Helpful post
    #4 16263415
    piwko
    Level 25  
    darecki81 wrote:
    Do you have a diagram?
    Or is it possible to buy another computer, for example from a scrap?

    You can, but immo is there.
    There are three ways, adding the one used to the car, soldering the processor from the old to the new one, or rewriting its contents, or the third one I used.
    As far as I remember, the module consists of two boards, one has relays, and the other electronics, you separate and replace the board with relays.
    A good desoldering iron is necessary, it is not easy to desolder.
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  • #5 16263693
    darecki81
    Level 7  
    OK thanks.
    On Saturday I will be in for a scratch and maybe I'll find something.
    I am still wondering if it is possible to connect an additional plus to the master lock and whether it is possible to open the other doors somehow.
    But I will beat it tomorrow.
    Thanks
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  • #6 16264678
    darecki81
    Level 7  
    Anyone know how to open a Citroen c3 2005 with the central blocked ??
    Only the driver's door opens from the key.
    Everything else is blocked.
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  • #7 16289982
    darecki81
    Level 7  
    Many thanks to mr "beer"
    Following his instructions, I finally opened and FIXED Lemon.
  • #8 16592955
    Trafo9000
    Level 2  
    piwko wrote:
    Relays in the computer body to be replaced. I was fixing something like that.
    Hello. I have the same problem, ie I can close the car with the remote control, but only open the key. So if I close the car from the inside, this little icon in the middle, you can open it, except to tilt the window and open it with the key. I will add that the car is Citroen C3 Pluriel 1.6 petrol. Could I ask for a diagram, photos, how to replace these relays ?? From what I read, they are located under the steering wheel ?? best regards
  • Helpful post
    #9 16593110
    piwko
    Level 25  
    Trafo9000 wrote:
    piwko wrote:
    Relays in the computer body to be replaced. I was fixing something like that.
    Hello. I have the same problem, ie I can close the car with the remote control, but only open the key. So if I close the car from the inside, this little icon in the middle, you can open it, except to tilt the window and open it with the key. I will add that the car is Citroen C3 Pluriel 1.6 petrol. Could I ask for a diagram, photos, how to replace these relays ?? From what I read, they are located under the steering wheel ?? best regards

    The UCH, or computer body, is behind the clipboard. I wrote what needs to be done. If you don't have the soldering equipment and skills, don't do it for your own good.
  • #10 16593384
    Trafo9000
    Level 2  
    piwko wrote:
    Trafo9000 wrote:
    piwko wrote:
    Relays in the computer body to be replaced. I was fixing something like that.
    Hello. I have the same problem, ie I can close the car with the remote control, but only open the key. So if I close the car from the inside, this little icon in the middle, you can open it, except to tilt the window and open it with the key. I will add that the car is Citroen C3 Pluriel 1.6 petrol. Could I ask for a diagram, photos, how to replace these relays ?? From what I read, they are located under the steering wheel ?? best regards

    The UCH, or computer body, is behind the clipboard. I wrote what needs to be done. If you don't have the soldering equipment and skills, don't do it for your own good.
    thanks for the quick reply. I have the equipment and the skills are as well. Do you have any photos, diagrams, anything to bring me closer to how to do it. Regards and thanks in advance.
  • #11 16593650
    piwko
    Level 25  
    What pics? You pull out your ear, split the plates and replace the one with the relays. You put it back in the car and after work.
  • #12 16593853
    Trafo9000
    Level 2  
    Ok. I understood, So now I had to look for Allegro or some kind of body comp. . Thanks and regards
  • #13 17220894
    darecki81
    Level 7  
    As my friend wrote, I soldered the plate with relays from another Citroen C3

Topic summary

The discussion revolves around a central locking issue in a Citroen C3, where the actuator makes a sound but does not unlock the doors, with only the driver's door operable via the key. Users suggest that the problem may lie in the relays within the body control module (UCH). Solutions include replacing the relays, which are located behind the steering wheel, and potentially sourcing a replacement module from a scrap vehicle. Some users have successfully repaired their systems by soldering relay boards from other Citroen C3s. Diagrams and detailed instructions for the repair process are requested by several participants.
Summary generated by the language model.
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