intermittent power

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    PCM problems, how to test circuits Cummins

    2011 Ram 3500 6.7 dually PCM intermittent power input, various sensor circuits high and low, no comms with PCM from various modules, AllData only helps if I have a PCM connector breakout box 8815. Can someone show me how to find these circuits myself ? Looking for 3 PCM ground circuits, 3 PCM...
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