Tripac apu alt code no start

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by D.Tibbitt, Oct 24, 2022.

  1. LoneRanger

    LoneRanger Road Train Member

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    there are diagrams out there I have one that’s on a older version I’ll post up in a bit
     
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  2. LoneRanger

    LoneRanger Road Train Member

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    Your issue was right here i think, since that looks like it was the sense wire on the starter. Because that sense wire goes to the starter, it was grounding out and throwing the code before it even started.

    2EDBBD0E-B293-4F30-97A7-2EA093E5743D.png
     
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  3. D.Tibbitt

    D.Tibbitt Road Train Member

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    Yes that would make sense.. The wire at fault has a 3amp fuse on it right before it hooks into the starter... power to the wire is supplied off the postive battery cable.. I looked for any writing on the wiring itself but couldn't find anything
     
  4. LoneRanger

    LoneRanger Road Train Member

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    If in fact that is the sense wire on the newer versions it’s wired directly to the battery. Not jumpered off the starter. So as to not cause this kind of confusion.


    If you want pm me your email email I’ll send this pdf off to you. It’s a good starting point. I used it alongside of images from google to fix my issues.
     
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  5. Phoenix Heavy Haul

    Phoenix Heavy Haul Medium Load Member

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    @D.Tibbitt thanks for posting what the problem was.
    I have to work on mine tomorrow it started doing the sane thing again. I checked the main grounds but that’s not it this time. I’ll look for this wire tomorrow.
     
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  6. D.Tibbitt

    D.Tibbitt Road Train Member

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    We're you able to get it fixed?
     
  7. Phoenix Heavy Haul

    Phoenix Heavy Haul Medium Load Member

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    I didn’t get home last weekend to tear into it. However, it magically started working again. I’m assuming I have a loose ground somewhere but it’s nowhere that’s easily accessible. Gonna wait till the weekend and go through it.
     
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  8. D.Tibbitt

    D.Tibbitt Road Train Member

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    Yeah maybe a loose ground or a wire starting to rub thru somewhere
     
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  9. Phoenix Heavy Haul

    Phoenix Heavy Haul Medium Load Member

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    We’ll I’ll definitely have to look it over now. Had a blowout that almost took it out today!!
    Got 2 of my fenders and back of cab as well. 55CFE660-70BC-477D-8049-CB916CC76FDA.jpeg 2FDC4435-465D-4263-BEB4-66C68148F2C1.jpeg
     
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  10. InTooDeep

    InTooDeep Donner party survivor

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    Oh man that sucks out loud.
     
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