Quote:
Originally Posted by biggy238
Lol you asked a question?
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yes. Remember I am speaking directly from an engine stand point. Engine and chassis are on two different buses or they are two isolated systems in the equipment I have personally seen that isn't ISO on all of the CNH equipment I have worked on. Might use the same plug to diagnose both (not common in CNH) but typically two wires man the chassis and two man the engine if using the same plug. I see the wiring is different but there is still the question of how can one plug directly into the ECM with a benchtop harness but not plug into diagnostic port with an adapter and communicate with it?
I also noticed the off-highway pinout shows 6 wires but the plug you posted a picture of is populated with 7 pins.
I am not trying to question you or your knowledge on it one bit either (you are much better versed on
CAT stuff than I am) I am just a nerd with wirez and trying to grasp what is so drastically different other than pinout.
This is probably just one of those things best left alone and buying the right chit is part of the game.