As you know I've had some misfires for a while. Today I did some measurements of the ignition coil wiring harness.
Please tell me what I should be seeing and whether this is wrong.
Pin 1 (the rightmost pin of the coil, right?) - several kiloohms
Pin 2- this one had 100k resistance almost, .
Pin 3 - ground, nice path to ground.
Pin 4(leftmost pin of the coil) of the wiring harness(also number stamped on connector), this is supposed to be voltage, right? I measure normal voltage, but...when I turn off the engine, I am measuring 13 ohms of resistance to ground.
Measurement was done with the plug connected to the coil, I used these special puncture needles to slide inside the connector so I could take some waveform captures with my oscilloscope.
I want someone to tell me if I should or shouldn't be getting resistance to ground on this pin of the wiring harness that is
I've pulled up the schematics, it says that pin 4 of the coils is powered via junction 53/328 which itself gets power from a particular relay on engine on.
So, if I am getting power to pin 4, I shouldn't have any low resistance to ground, or any path to ground right? The only mistake I can think of while doing this, is I might have measured the coil's path to ground, but it shouldn't be this low, right? 13 ohms X 14v = 1 amp to ground.
I am just hoping someone can confirm, since I don't want to end up on a wild goose chase again.
