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Thread: Windscreen washer switch works the wrong way?

  1. #1
    Member SW2's Avatar
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    Windscreen washer switch works the wrong way?

    Hello

    When I bought this x-type, the window washers didn't work.
    I pulled off the wheel and liner and found a broken wire going to the pump.
    However, when I reconnected the wire, the pump came ON - and stayed on.
    If I push in the button on the end of the wiper stalk, the pump stops. When I release the button, it's permanently on and spraying water.
    In other words, it's working in reverse!

    It looks like someone has been fiddling around down there, before me - some odd coloured wires and patching.
    Just wondered if there was a known issue which could cause this?

    Thanks, SW2

    2005 2.0d saloon
    x-type 2.0d 2005

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    So, I replaced the stalk (on the steering column) - but no change.
    I need a wiring diagram, if someone could point me in the right direction, please?

    Unfortunately, someone has been in there before me, so not sure what's original and what's bodged.
    The thick black wire, in the foreground of this picture is an earth cable (blurred/out of focus).
    With the ignition on, if I connect the earth to the washer motor, it comes on and stays on - unless I push the washer switch, when it turns off, until I release the switch, then it's back on again.
    All other wiper functions work correctly.

    Could it be the motor? Somehow?
    Electrics aren't my strong suit - but this makes no sense to me!
    I'll update with any findings - if there are any
    Thanks.

    Click image for larger version. 

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    x-type 2.0d 2005

  3. #3
    Senior Member Jimbov8's Avatar
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    That looks a mess. Here is the electrical manual for your car, figure 13.1 is the drawing you need.
    http://www.jagrepair.com/images/Elec...al%20Guide.pdf
    Jim.
    2012 XKR Black pack, Speed Pack, Aero pack, Rat pack. Past:-87'XJS 3.6L, 93'XJ40 3.2L gold, 95'XJ6 4.0L sport, 00'XJ8 3.2L sport, 2005 XK8 4.2L coupe, 2009 XK 5.0L Portfolio in that order and enjoyed all of 'em.

    I do not offer advice, I only say what I would do with the set of circumstances presented. Your choice always.

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    Member SW2's Avatar
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    That's great. Thanks, Jimbov8 - very much appreciated.
    x-type 2.0d 2005

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    Can any electricians tell me: Does the fact that I can get the motor to work, mean that the motor itself must be okay - even though it's working at the wrong time?

    I'm determined to solve this! I WILL post a solution, eventually.
    x-type 2.0d 2005

  7. #6
    Senior Member Jimbov8's Avatar
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    Correct. Carefully trace out the wiring and hopefully you’ll be successful.
    Jim.
    2012 XKR Black pack, Speed Pack, Aero pack, Rat pack. Past:-87'XJS 3.6L, 93'XJ40 3.2L gold, 95'XJ6 4.0L sport, 00'XJ8 3.2L sport, 2005 XK8 4.2L coupe, 2009 XK 5.0L Portfolio in that order and enjoyed all of 'em.

    I do not offer advice, I only say what I would do with the set of circumstances presented. Your choice always.

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  9. #7
    Senior Member firefly19540's Avatar
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    Haven't looked at any wiring diagram but I can explain the science behind how it works and you will have to resort to trial and error to find the right configuration.

    You have a normally open circuit which means in a passive state (without any power) nothing happens. So you will have a wire that has power 12volt and an earth to complete a circuit. Now the power will go to a switch or a relay in the system that will make the circuit closed and operate the motor. What you have need to do if you are sure the switch is working and wired correctly and no previous wiring changes have taken place is to connect the wire that carries the 12volts and connect it to a different connector until you find the one that is the switch live. If you find it doesn't solve the problem then I suggest it is the relay at fault.

    Hope this helps
    Regards Tony

    2003 Jaguar X-Type Auto 2.1L Petrol

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  11. #8
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    Thanks, Jimbov8 - glad to have that confirmed.

    Thanks, firefly19540. Great explanation.

    From checking the diagrams, I notice that the relay which controls the washer pump is missing, on my car.
    Not sure why it would have been removed, but will source a replacement before I go any further.

    Thanks again for all the help.
    x-type 2.0d 2005

  12. #9
    Senior Member Jimbov8's Avatar
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    I would suggest that the removal of the relay may be the reason for the mishmash of wiring and the system not working correctly.

    Be methodical in tracing the wiring and don’t be tempted to get sidetracked. If you need any help then just shout, that’s what we’re here for.
    Jim.
    2012 XKR Black pack, Speed Pack, Aero pack, Rat pack. Past:-87'XJS 3.6L, 93'XJ40 3.2L gold, 95'XJ6 4.0L sport, 00'XJ8 3.2L sport, 2005 XK8 4.2L coupe, 2009 XK 5.0L Portfolio in that order and enjoyed all of 'em.

    I do not offer advice, I only say what I would do with the set of circumstances presented. Your choice always.

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  14. #10
    Member SW2's Avatar
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    Thanks. I hope so - unless the problem arose first and the relay was removed as part of the 'fix'?
    The wiring is such a mess that nothing would surprise me!

    Of course, because the relay is missing, I don't know the part number.
    Be grateful if anyone can help with that. It's R8 on this diagram and it's a small 4 pin relay.


    Engine compartment fuse box 2004 - 2009

    Attachment 33795


    Thanks again for all the advice. It really is appreciated!
    Best wishes. SW2
    x-type 2.0d 2005

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