i did a buzz test and it kicked out a dtc for injector 3 high to low side fault. so i unplugged that injector and ran the buzz test again. to my surprise i heard a faint buzz when injector 3 was to fire. then i unplugged the whole harness on passenger side and ran the test again. when it was injector 1, 3, 5 and 7's turn to fire i heard a faint buzz from drivers side bank. is this normal? i have also ohmed out each injector wire at idm and they all came in around 3.1 ohms. this leads me to believe the wiring is intact. possible pcm malfunction?