hey i just put a d16z6 into my 1989 DX sedan, im running a PO6 with obd1 jumper, and have modified my engine harness for obd1 and mpfi. I'm getting a code 15 (ignition output signal) on both a PO6 and P28. I have replaced the coil and ignitor, and even tried a known good dizzy as a replacement. I used a multimeter to check all grounds and the engine/dizzy are grounded. I'm getting 12v to the dizzy at the black/yellow wire, and 10v at the fat white wire. The main relay, and ignition fuse are good.