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[How To]HDC (Hill Decent Control) Repair

Discussion in 'Technical Archive' started by LandyXei, Jan 23, 2012.

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  1. LandyXei

    LandyXei New Member

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    Location:
    Tiptree Essex
    Hi all I&#8217;m Very new here only registering yesterday
    Having bought my Freelander last week I have since found out the HDC Does not work so here&#8217;s a quick &#8216;how to&#8217; to repair the faulty plug that&#8217;s renowned for failing

    Difficulty:Easy
    Time: 40 Mins
    Tools: 2x Female Spade Terminal, Crimping tool, 6mm Wire, 7mm Socket
    Car used: 1999 Freelander Xei

    Firstly here&#8217;s a pic of the tools I used
    [​IMG]
    Start off removing the Gear knob and Gaiter
    [​IMG]
    As you can see from this picture the grey connector block as fallen apart and the pins have failed at the soldering point
    [​IMG]
    What I noticed is that a Female Spade Terminal fitted across both the pins inside the HDC Connector
    [​IMG]
    [​IMG]
    But as you can imagine a single connection would bridge the terminals and then the HDC would always be on so I cut two female terminals so they both angled the same thus still fitting but as two individual connections
    [​IMG]
    I then proceeded to add the 6mm wire perfect fit and kept the joints tight in the crimp
    [​IMG]
    [​IMG]
    Once I had done this I carefully fitted the new terminals into the connector block on the HDC unit
    [​IMG]
    Tested it on the car and refitted the HDC to the car
    [​IMG]
    [​IMG]
    All done and dusted and now my Freelander has fully functioning Hill Decent Control I hope this will help a few of you suffering with such problems
     
    Last edited: Jan 23, 2012
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  2. markyzs180

    markyzs180 Active Member

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    Good write up buddy :D

    I'm sure it'll help one of us out at some point mate. Maybe the mods could make it a sticky?
     
  3. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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    Please copy into FAQ area.
     
  4. Joe_H

    Joe_H Well-Known Member

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    May I ALSO ADD, ! -Problems with the HDC making a hell of a noise - but working ! - (Sound like a load of jack hammer going off - but again works fine and no warning lights ! - )

    SIMPLE fix - change the brake fluid! - seriously - it is almost 100% certainly the issue. !

    You need to FLUSH and CHANGE the whole fluid and bleed all brakes... system will then purr like a Kitten.

    So, to recap, all warning lights ok, however, in HDC it sounds like jack hammers - simply change and flush ALL brake Fluid.

    Problem Solved. !

    Enjoy.

    Joe_H
     
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