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96 FLD, N14. Ign off but oil & warning light on. Won't turn on

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Asalinas2y, May 30, 2023.

Page 2 of 2
  1. May 31, 2023 #11
    Asalinas2y

    Asalinas2y Bobtail Member

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    May 30, 2023
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    Anybody know why no data on the obd1? Anything I can do here?
     

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    Asalinas2y, May 31, 2023
    Asalinas2y, May 31, 2023
    #11
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  3. May 31, 2023 #12
    Asalinas2y

    Asalinas2y Bobtail Member

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    May 30, 2023
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    I can't even get a code. No data on obd port
     
    Asalinas2y, May 31, 2023
    Asalinas2y, May 31, 2023
    #12
  4. May 31, 2023 #13
    xsetra

    xsetra Road Train Member

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    My 99 FLD had a toggle switch left side by door. Not sure which way is accurate. Put switch up(or down) and turn key on. Your dash stop engine and check engine lights would blink on and off. Count the blinks for your code.

    Red blink would separate codes. Could be the other way. I don't remember.
     
    xsetra, May 31, 2023
    xsetra, May 31, 2023
    #13
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  5. May 31, 2023 #14
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    No data, no start? You've probably lost ecm power for some reason. Shouldn't be hard to figure out. Did you check all your circuit breakers in there?
     
    Big Road Skateboard, May 31, 2023
    Big Road Skateboard, May 31, 2023
    #14
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  7. May 31, 2023 #15
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    They would be there in the relay panel you posted a pic of.
     
    Big Road Skateboard, May 31, 2023
    Big Road Skateboard, May 31, 2023
    #15
  8. Jun 1, 2023 #16
    little cat 500

    little cat 500 Road Train Member

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    edm box maybe
     
    little cat 500, Jun 1, 2023
    little cat 500, Jun 1, 2023
    #16
  9. Jun 4, 2023 #17
    Asalinas2y

    Asalinas2y Bobtail Member

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    May 30, 2023
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    We ended checking the each of the pins on the ecm harness. I think there was like 26 of them. We used a diagram of what voltage or ground it supposed to be. I think they were like 5 or 6 grounds. One of the pins was giving a current when jts should of been found. Found out that on the positive terminal there were 3 smaller wires connected to it. 1 of them needed to be grounded. We grounded it and it fired right up. Also the ecm was able to read codes as well. Thanks for your input.
     
    Asalinas2y, Jun 4, 2023
    Asalinas2y, Jun 4, 2023
    #17
    xsetra Thanks this.
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