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Thread: 2003-2007 Cummins 5.9L: Major Update Released in 3.0!

  1. #21
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    Should check voltage on the bus pins as well to verify it?s connected. Can?t remember the PIN numbers on the port off the top of my head but high signal is 7.5v-20v and low signal is 3.5v-0v

  2. #22
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    test results; pin#2 at 1.3v #4 grnd, #5 grnd, #13 5v, #16 12 v #7,9 and 15 must be signal

  3. #23
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    Looks like it?s communicating

  4. #24
    Tuner in Training
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    Apr 2019
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    found my issue, someone had Communication pin #12 stuck in hole #13...bought the special Deutsch de-pin tool, switcheroo and presto!...read vehicle and generated file in seconds...thanks Corey at support and Mat at Optimal Welding...we can call support ticket #167985 closed !