I have a problem with the ECM in my car. Whatever I do to try and fix it I still have an occasional misfire on cylinder #6 that will not go away. It takes days to get it to set a code and then the scan shows P0356, coil primary fault. Good power to the coil, 0.2 ohm resistance in the control wire to the ECM. Swapped coils, new plugs, PCV valve etc, no change. Reading the TSB's and recalls the IGBT coil drivers in certain Fords was prone to failure and Ford changed out not only the ECM/PCM, but all the coil packs (COP system) under warranty.
My question is, can the coil IGBT, in this case the ON Semiconductor B8202N, have an internal fault, or are they either good or bad with nothing in between?
My question is, can the coil IGBT, in this case the ON Semiconductor B8202N, have an internal fault, or are they either good or bad with nothing in between?