WTB - Citroen XM Dash AC Computer Control
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  1. #1
    Fellow Frogger! aquinian's Avatar
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    Default WTB - Citroen XM Dash AC Computer Control

    Hi All,

    I am chasing the electronics board that sits behind the a/c knobs of a Citroen XM. If you have one or any pointers could you please let me know?

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    Regards,
    Michael
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  2. #2
    Contented Peugeot Driver addo's Avatar
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    The one that's like a 605?

    There's a new control card on Fleabay but the seller hasn't identified which of the three types it is.
    Last edited by addo; 31st December 2013 at 01:46 PM.

  3. #3
    Fellow Frogger! aquinian's Avatar
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    Thanks, that is exactly the one I am after. But the price ...

    NEW Genuine Citroen XM Heater Climate Control Panel | eBay
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  4. #4
    Contented Peugeot Driver addo's Avatar
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    It's probably got a list price of $600.

  5. #5
    Fellow Frogger! aquinian's Avatar
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    I bet you're right too.
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  6. #6
    Contented Peugeot Driver addo's Avatar
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    Dearer than I thought - last published French prices, excluding tax:

    Early faceplate: 95 659 456 ZL €715
    Early circuit: 6451H5 €740
    Later faceplate: 6451AT €419
    Pre 07162 circuit: 6451R9 € 614
    Last circuit: 6451AS €422

  7. #7
    Fellow Frogger
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    Try Martin Bray in Adelaide. He's dismantled a few earlier cars and may still have the part.

    How did you arrive at the conclusion the circuit board is the faulty part?

  8. #8
    Fellow Frogger! aquinian's Avatar
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    Thanks for the replies.

    An auto sparkie diagnosed the problem. He wasn't 100% sure but he thought that the board was dead.
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  9. #9
    Fellow Frogger
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    While the diagnosis could be correct, it doesn't sound definite. Was that just because the AC doesn't work or was the wiring diagram available and each of the other components checked? The cabin fan has a module that can fail as you see with the Xantia/Berlingo and Pug equivalents. Have you made sure the A/C control relay behind the RH headlamp works? It's one of 4 relays there, the other 3 being for EFI. There should also be some some fuses for the AC behind the LH headlamp.

  10. #10
    Fellow Frogger! aquinian's Avatar
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    No, all the fans etc. are dead. Nothing works air-wise. He said he traced power in to the board so that's why he suspects that it is the problem or something like that.
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  11. #11
    Contented Peugeot Driver addo's Avatar
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    I can email some circuit diagrams to John. Just can't imagine why the board would fail.

  12. #12
    UFO
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    The entire ventilation system in our S2 XM used to shutdown at random times. The only way to get it to restart was to reboot the car. It's an XM, anything electrical is possible.

    Yes the S2 had a different AC control panel, but the Bureau de Bastarde had maintained the electrical rage.
    Craig K
    2009 C5 HDi Exclusive

  13. #13
    Contented Peugeot Driver addo's Avatar
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    I point the finger first at the underdash green relay, it's one of those typically underspec components; the fan startup current munches its contacts to nothing. Just like the radiator cooling fan relays; contact erosion stops the unit dead. At least with an XM relay it's old enough you can prise the cover off and check out its contacts.

  14. #14
    Fellow Frogger! aquinian's Avatar
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    Hi Addo,

    The diagrams would be great thanks. I'll have a hunt around for the relay.

    Regards,
    Michael (I have now taken over this project...lol)
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

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