MSefi.com read only forum (Jan.15,2018)

MSII V3 board. V2.88 code. I purchased an IAC that is designed to fit into a 4.0L Jeep Cherokee inline 6 engine. After ohming out the connector, I found pin 1 & 4 were one coil and pins 2 & 3 were the other coil pair. I have tried IAC moving only and IAC always on settings but the stepper never moves. I have looked at the circuits thru an O'scope and found pins 1 & 2 were square waves driving the coils and pins 3 & 4 were close to ground. I have tried reversing pins 1 & 4 and pins 2 & 3 with still no motion. Is there another point in the config I am missing?

problem found: apparently I have the wrong interconnect cable. Pins 27 & 29 are missing and pin 25 has the shield for the ignition going to it.