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Thread: ECU Faults

  1. 2nd May 2020, 05:23 PM #11
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    V8Ian
    V8Ian is offline Super Moderator
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    What a dumb question, Paul.
    I'm eagerly awaiting the answer.
    If you don't like trucks, stop buying stuff.
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  2. 2nd May 2020, 06:29 PM #12
    Robflocar
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    Quote Originally Posted by V8Ian View Post
    What a dumb question, Paul.
    I'm eagerly awaiting the answer.
    I'd say so are most of us.
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  3. 2nd May 2020, 08:54 PM #13
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    Bohica
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    Good question Jonesfam. I am guessing voltage at the battery.
    20200502_213543.jpg
    This is with the engine stopped

    20200502_213558.jpg
    This is with the engine running.

    Similar to the voltage at the battery measured with a digital volt meter.

    I noticed that when the starter motor was turning, the volts dropped to 10!
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  4. 2nd May 2020, 09:11 PM #14
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    sierrafery
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    Actually nanocom can't show direct voltage from the battery but it should be very close to that as long as there are no weak connections between the battery and fuseboxes. Nanocom shows the voltage from fuse F20 interior fusebox, that's the feed for the OBD port.
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  5. 3rd May 2020, 07:56 AM #15
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    jonesfam
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    I was just asking because I changed to a new battery yesterday, with the old battery I was showing, at best, 13.? volts.
    With the new battery I'm getting 14.? volts.
    Better battery or battery holding/receiving better charge?

    It would seem better battery!
    Jonesfam
    Either way happy to have a new battery.
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  6. 3rd May 2020, 12:28 PM #16
    DiscoMick Guest
    With engine running wouldn't it be showing alternator output minus any voltage drop to the power supply for the readout port?
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