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Thread: I need major LC1 hookup help!

  1. #1
    Senior Member
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    Default I need major LC1 hookup help!

    Alright.. i've read all the tutorials, manuals.. etc.. but I still need some hard info..

    I have the LC1 with the dynotune gauge.. hooked up like that it works great.. from the WB to the gauge..

    And, I AM NOT USING THE STOCK LOCATION.. I have a bung.

    Now;

    For flashscan I have selected the following PIDs.. BEN_LC11.. and I get this in the info box..

    PID value cannot be determined because
    the following error would occur:
    Divide by zero.

    I also have selected AD1 and AFR_LC11

    Now, I have the brown wire (analog 2) going to pin E

    Here is were I get really lost.. is there a way to see the read out on the gauge and also record thru Flashscan? I would like to know very specifically what wires to use (with color, please) especially the grounds, either way.. even if I can't run the gauge and the flashscan.

    I have already tryed many ground combos but from what the instructions say..

    I put the white and green wires to the pin D, and I fired up flashscan.. validated etc.. and nothing.. it reads the same whether it is plugged into the interface or not. Also, after i disconnected my gauge didn't work right because it wasn't grounded.

    WHAT AM I DOING WRONG??

    PLEASE PLEASE help, i've been struggling and I figure it is something simple that i'm overlooking but all I know is it will not show the AF that the gauge is, then I unhook the pins from the flashscan and it reads the same through the scantool.. so obviously its not getting through somehow.

    Thanks,

    Chris
    1992 Turbo LSX Notchback Mustang 275 radial car - under construction
    2008 Sierra 2500HD Duramax

  2. #2
    EFILive Developer Site Admin Blacky's Avatar
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    Default

    Red = 12V battery power (do not connect to FlashScan)
    Blue = vehicle's chassis ground (do not connect to FlashScan)
    White = vehicle's chassis ground (do not connect to FlashScan)
    Yellow = not used with FlashScan
    Brown = FlashScan Pin C or E *
    Green = FlashScan Pin D
    Black = not used with FlashScan.

    If you use Pin C, then select the following PIDs:
    {EXT.AD2}
    {CALC.BEN_LC12}
    {CALC.AFR_LC12}

    If you use Pin E, then select the following PIDs:
    {EXT.AD1}
    {CALC.BEN_LC11}
    {CALC.AFR_LC11}

    For the above PIDs to operate correctly you also need to select {GM.AFR}

    Regards
    Paul

  3. #3
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    Will this work with the gauge as well?

    If I have:

    {EXT.AD1}
    {CALC.BEN_LC11}
    {CALC.AFR_LC11}
    {GM.AFR}

    All I need to do with the software is validate when I plug in the pin connector to flashscan right?

    Is there anything else with the software?
    1992 Turbo LSX Notchback Mustang 275 radial car - under construction
    2008 Sierra 2500HD Duramax

  4. #4
    EFILive Developer Site Admin Blacky's Avatar
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    Calculated PIDs are automatcially marked as valid as soon as all the PIDs used in the calculation are validated. So really the only PID that needs to be validated from the vehicle is the {GM.AFR} PID.
    You will continue to see the "div by zero" warning until you actually start logging data.

    Regards
    Paul

  5. #5
    EFILive Developer Site Admin Blacky's Avatar
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    Quote Originally Posted by Chris81
    Will this work with the gauge as well?
    I don't know, I do not have a gauge to test.
    Maybe someone with an electrical/electronic background can answer. Having both hooked up *may* skew the reading - I do not know.

    Paul

  6. #6
    Lifetime Member SS2win's Avatar
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    If the gauge is not hooked to the serial port then I hopes that it can use the AD1 (0-1V) and flash scan can use AD2 (0-5V). Also the LC1 manual says to connect the White wire to the analog out device so I tied it in with the Green.
    2001 Camaro SS
    EFILive Custom OS3

  7. #7
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    Quote Originally Posted by Blacky
    Red = 12V battery power (do not connect to FlashScan)
    Blue = vehicle's chassis ground (do not connect to FlashScan)
    White = vehicle's chassis ground (do not connect to FlashScan)
    Yellow = not used with FlashScan
    Brown = FlashScan Pin C or E *
    Green = FlashScan Pin D
    Black = not used with FlashScan.

    If you use Pin C, then select the following PIDs:
    {EXT.AD2}
    {CALC.BEN_LC12}
    {CALC.AFR_LC12}

    If you use Pin E, then select the following PIDs:
    {EXT.AD1}
    {CALC.BEN_LC11}
    {CALC.AFR_LC11}

    For the above PIDs to operate correctly you also need to select {GM.AFR}

    Regards
    Paul
    Well, it was hooked up like you say and it still does not work.. its like the flashscan doesn't see it at all. the gauge reads 14.5-15.0 at idle and the WBO2 date says 11.8 or so.. observating or recording. It reads the same whether it is plugged in or not.

    I also cut the source wire to the gauge to see if that is the problem and it didn't make a difference.

    Anything else you could think of?

    Should there be a certain voltage that the AD1 should read..etc?
    1992 Turbo LSX Notchback Mustang 275 radial car - under construction
    2008 Sierra 2500HD Duramax

  8. #8
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    Here is one more question.. would I need to recalibrate the LC1 (free air) to work with Flashscan if it has already been calibrated? (Dynotune instructions states that they calibrated the LC1 when it was setup to work with their gauge).. could this be my problem?
    1992 Turbo LSX Notchback Mustang 275 radial car - under construction
    2008 Sierra 2500HD Duramax

  9. #9
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    Default

    TTT
    1992 Turbo LSX Notchback Mustang 275 radial car - under construction
    2008 Sierra 2500HD Duramax

  10. #10
    EFILive Developer Site Admin Blacky's Avatar
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    Quote Originally Posted by Chris81
    Here is one more question.. would I need to recalibrate the LC1 (free air) to work with Flashscan if it has already been calibrated? (Dynotune instructions states that they calibrated the LC1 when it was setup to work with their gauge).. could this be my problem?
    No, once it is calibrated it will output the correct voltage for any external data logger - EFILive included.

    Regards
    Paul

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