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Thread: Door lock solenoid connections

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  1. #1
    Join Date
    Dec 2007
    Location
    London
    Posts
    490

    Question Door lock solenoid connections

    There are three door lock connectors

    Two lead, brown plug
    Three lead, white plug
    Two lead, red plug

    The red plug looks like a sensor, but the other two both look like power connectors

    Does anyone know what any of them do?

    I can't get the door lock to operate electrically at all with a replacement door loom

    No matter whether the door is open or closed, no life from it at all, the other door does lock when open, before unlocking a second later

    I've repaired the old loom and that behaves in exactly the same way

    All other locks open and close as before, and the car locks when required, apart from the door in question

    So the controller definitely thinks the door is closed

    For what it's worth I can't get the door mirrors on either side of the car to operate now, but I suspect that has been for some time

    The only thing that does operate is the window, but I managed to break the window button - Doh!

    Since the central locking relay is hardwired to the ZEE, I'm at a loss as to what to try next - for the central locking or the mirrors!

    Any suggestions most welcome
    Paul
    Pure 2000 W, LHD 599cc - Engine Rebuilt Feb 08 - sold
    Passion 2000 W, LHD 599cc - Engine Rebuilt Mar 09 - sold
    Passion 1998 T, LHD 599cc - Engine Rebuilt Apr 10 - sold
    Cabrio 2001 Y, LHD 599cc - Engine Rebuilt Jul 10 Replaced Oct 16

  2. #2
    Join Date
    Nov 2004
    Location
    North Weald, Essex
    Posts
    181
    Sounds like you're having fun Paul!
    I don't know if this helps
    https://www.fq101.co.uk/how-to-guides/fortwo-450/electrical/251-sam-wiring
    It does mention the door locks & wire colours, good luck.
    Martin

  3. #3
    Join Date
    Dec 2007
    Location
    London
    Posts
    490
    Thanks Martin

    Found the fault with the central locking, the solenoid has failed, presumably as a result of the faulty wiring

    Following on from earlier

    Two lead, brown plug - this is the power source, it reverses polarity depending on the action to lock/unlock

    Three lead, white plug - only two pins are used, this is the sensor for the lock/unlock position

    Two lead, black/red plug - this is the sensor for the door catch, closed circuit when the catch open IIRC - separate to the solenoid itself

    The Valeo solenoid doesn't have a part number that I can see





    I still have no idea why the Mirrors no longer work, and no idea where to look next
    Paul
    Pure 2000 W, LHD 599cc - Engine Rebuilt Feb 08 - sold
    Passion 2000 W, LHD 599cc - Engine Rebuilt Mar 09 - sold
    Passion 1998 T, LHD 599cc - Engine Rebuilt Apr 10 - sold
    Cabrio 2001 Y, LHD 599cc - Engine Rebuilt Jul 10 Replaced Oct 16

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