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Thread: Disco 2 TC and decent control fault.

  1. #1
    djgrima Guest

    Disco 2 TC and decent control fault.

    Hi all,
    Just bought an 03 D2. 4.0 V8. Love it. The traction control and hill decent fault lights come on after about 5 minutes of driving. If I stop the car, switch of ignition and restart, the lights go out but come on again after a few minutes and stay on until I treaty the process. Any ideas where to start fault finding?

    Cheers

    Dave.

    Sent from my GT-I9100 using AULRO mobile app

  2. #2
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    I'm no expert myself, but there are suggestions in some other threads. (1) Find someone with a Nanocom or similar and get the fault codes read. That will tell you where the issue is. Pending that, (2) check your front wheel bearings for play, (3) check the wires to the ABS speed sensors on all four wheels for breakages, (4) check the connectors and so on. Maybe (5) use a powerwash to clean any dirt from around the ABS sensors.

    Take a look at these:

    Technical Information

    Another one

    LR4x4

  3. #3
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    Perhaps a post in the D2 forum will provide you with an answer?

  4. #4
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    Providing the LEDs haven't been tampered with and only ETC and HDC are illuminated this would indicate that the Engine Data received by the SLABS is corrupted in someway. RAVE suggests "Sticking Throttle, signal failure, data corruption".

    Hint: Find your (or purchase a) copy of RAVE and open to page 70-23 "Brakes: Operation and Description" and refer to the table titled "Warning Lamp Fault Operation".

    I'm not particularly familiar with the foibles of the V8, but I'd suggest checking the connectors and loom between the ECM and SLABS to check for damage or backed out contacts as a starting point. RAVE is pretty much essential for this kind of testing, as it contains wiring diagrams and connector location and pinout information.

    Checking the SLABS and ECM fault codes will give you a better idea of the exact cause. I would not bother chasing hubs, sensors, or SVS's until you see codes that implicate these items.

    cheers
    Paul

  5. #5
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    is the abs light on as well?
    have a good one :D ken :wasntme:
    MY07 L320 RANGE ROVER SPORT MORE GOODNESS TO COME
    MY03 D2A TD5 EXTRA GOODIE ENHANCED :D now parting from life
    1996 D1 300TDI GONE
    08 ford ranger c/c
    WRECKING DISCOVERY 2
    PM ME FOR WHAT YOU ARE LOOKING FOR

  6. #6
    djgrima Guest
    Yes the ABS light is on. I noticed that it takes longer for the lights to come on if I don't touch the brake pedal when I start the car. I wonder if there might be a fault with the actual start up checks that the EMS does. I read one of the other posts and the info you guys have posted. I'll check the connections and bearings and see how I go. Think I'll invest in a diagnostics tool. Will let you know how I go. Thanks heaps.

    Sent from my GT-I9100 using AULRO mobile app

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