I am not one to normally post problems, due to i have not found many things that have not already been discussed. I have 2002 ram 2500 auto, 4x4, 24v, sport that has some major things going on with the modules, and can bus signal. I am getting readings from +3.5-4 volts -3.5-4volts. ref should be 5 volts overall limit. The injection pump has been tested standalone( cummins module) we have scoped the obd2 port on canbus+ and can bus-. the ecm has been disconnected to verify a change in signal limits( no change), and we are still having problems with out of limits voltage readings. More info... It had a tst powermax 3 stacked with a ts mvp tuner. The truck has been returned to stock to diagnose. If any of you guys have any input, I would be most thankful for any knowledge in this area.
Thanks!