Xantia cruise control problem.
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  1. #1
    Fellow Frogger!
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    Default Xantia cruise control problem.

    The cruise control in my series one VSX automatic is not working. Was intermittent in the past, but worked extremely well when it did.
    Operating the activating lever produces a relay click somewhere, but with engine & road noise I can't identify where.
    I can't find any reference in Haynes as to how it operates or even a wiring schematic .

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    Help please.

    Richard

  2. #2
    Real cars have hydraulics DoubleChevron's Avatar
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    Default

    Have a look at the brake pedal switch... it maybe disengaging it as soon as you try to switch in on. If it's like the XM it's a switch contained within the pedal itself.

    seeya,
    Shane L.
    'Cit' homepage:
    Citroen Workshop
    Proper cars--
    '85 Series II CX2500 GTi Turbo I
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    '72 DS21 ie 5spd pallas (last looked at ... about 15years ago)
    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual

  3. #3
    Fellow Frogger!
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    Default

    Thanks Shane , already checked that. I would like to know what fuse supplies it. Neither Haynes or the instruction book mentions it.
    The vacuum capsule that acts on the throttle appears sound. There is a "device" on the inner guard beside the battery with a air line running to the capsule which I haven't tackled yet as I don't know how it operates. It would be nice to know where the relay is that I can here when trying to engage cruise.

    Richard

  4. #4
    Contented Peugeot Driver addo's Avatar
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    The "device" is a vacuum pump-cum-regulator. One plug is for vacuum pump power (the round one) - the smaller blue plug is the regulator electrovalve. The vacuum pump runs constantly, the electrovalve regulates vacuum.

  5. #5
    Fellow Frogger!
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    Default

    Is it the same system as the XM? If so, there's a really good write up on diagnostics in the Xm club uk site... It contains pinouts for the control unit as well as a pretty much step by step diagnosis guide. It helped get mine sorted.

  6. #6
    Tadpole
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    Default Xantia Cruise Control Problem

    Had the problem a few years back . Source was the speed sensor unit, which was replaced and no problems since.

    Wiring diagrams are attached to possibly help in sorting your problem

    Mike



    Xantia cruise control problem.-wirelayout0001.jpgXantia cruise control problem.-wireguide0001.jpgXantia cruise control problem.-wirediagram0001.jpg

  7. #7
    Real cars have hydraulics DoubleChevron's Avatar
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    Surely the vacuum pump will only exist on turbo charged engines A N/A engine has plenty of free vacuum ready for use

    seeya,
    Shane L.
    'Cit' homepage:
    Citroen Workshop
    Proper cars--
    '85 Series II CX2500 GTi Turbo I
    '63 ID19 http://www.aussiefrogs.com/forum/showthread.php?t=90325
    '72 DS21 ie 5spd pallas (last looked at ... about 15years ago)
    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


    Modern Junk:
    '07 Poogoe 407 HDi 6spd manual

  8. #8
    Contented Peugeot Driver addo's Avatar
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    Default

    No, it is a standalone system adapted to the PSA range by Hella.

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