Well, i disconnected the harness from the valve cover and spun the engine over and only got a reading of millivolts. Does the injector harness need to be pluged in while testing the voltage? I could back probe and test that way too. Did plug in the scan tool, and it had a few codes, P1210 injcector control pressure high, p0603 Internal control module KAM malfunction, P1280 Integrated panel circuit out of range.