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    #31
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    You can test it yourself eddie, that is if you know how the continuity function on the test meter. One probe on the wire, the other on the chassis somwhere and it will tell you .
     
     

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    #32
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    yer i will give it a go. i wobbled the wires to the horn last night and the temp fluctuated.
     
     

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    #33
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    What colour are the wires connected to the sensor. Are they blue/brown and blue/red?
    Are the wires for the horn violet/blue and brown?
     
     

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    #34
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    yer thats spot on.
     
     

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    #35
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    The symptoms do sound like the circuit is broken.
    Is the horn connected?
    I doubt if the horn earth (brown wire ) would be causing your problem. Unless you connected the horn one to the sensor and vice versa.

    To test the wiring: Check the continuity of each wire (preferably all the way up to the cluster) but at least as far up as you can go.
    Both wires go from the sender up to the cluster.
    Also, as it stands you should be able to read a voltage at the sender connections with the ignition on.
    If you disconnect the sensor you should be able to check the resistance across it's terminals.

    I think Neal covered most of this earlier.
     
     

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    #36
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    Right then have removed the horn completly and when it rains the temp still fluctuates but only when it rains. I have borrowed a meter so i am going to test the wires one night.
     
     

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    #37
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    Right then i still have no working ambiant temp sensor and the BC button does not work on the stalk. But using the ignition and cluster button proves the on board computer is working. Now i have read online that i might need a 'k-bus reset'.
    I have the followig 2questions:-
    1) Has anyone heard of this procedure and is it the same as removeing the battery for 2 hours.
    2) Is it possible to dismantle the indicator stalk to test the BC button?
    Last edited by eddiee36; 13-01-2010 at 18:48.
     
     

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    #38
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    Can anyone help with the above?
     
     

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    #39
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    Finally sussed out why the OBC is not working, one of the wires within the stalk has broke. Does anyone know how the steering wheel covers come off so i can reconnect the wire?
     
     

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    #40
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    Well after 45mins of removing the steering wheel and indicator stalk then repairing the wiring the OBC is all fixed for free apart from the temp still stays at -40. So after a year of the OBC being stuck on the clock it works!!!!
     
     

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