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Thread: U2139-71

  1. #1
    VXR enough Jon1796's Avatar
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    Default U2139-71

    Right had this since had the car about time I done something about it.
    I know itís not CID or CIM as itís got a new cim on and checked with another cid same fault.


    From what Iíve read and if i understand correctly symptom 71 is Bus signal failures, signal integrity or bus hardware failures.
    http://www.gonzostoolbox.com/knowled...sticcodes.html
    So from my software Iíve got done a few tests.

    High speed ok.

    Mid speed some chatter which is not picked up in blue.

    Then this which Iím guessing is grounds as terminals 12/13.

    And low speed which looks rather high.

    Well when I get some time go threw all L.S. modules and test then M.S. after that, hopefully itís one playing up and not the maze of wiring wish V said was OK when they had her to try and figure out a problem they couldnít solve....


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  2. #2
    VXR enough Jon1796's Avatar
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    Default

    Trying to narrow it down a bit.
    Unplugged drivers door and passenger door no difference so that ruled out ddm/pdm.
    But while I was doing it ran a dtc with ignition off, no cid fault, bonus I thought as Iíd just unplugged passenger door until I realised ignition was off. Turned it back on fault came back.
    So next time have a look at cim plug and wiring I think.


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