I'm not getting spark!

[raven2345]

In short, after my own arrogance, my loose wiring got caught up in the clutch for the fan on my KA. Well I soldered back together everything that I saw was messed up (MAF wires, and a wire that goes to the ignition coil area). But while doing that, instead of just trying to get it start then and there, I decided to cut off all of the other plugs I wasn't using like the huge IACV plug and a few others. With everything put back together, I'm still not getting spark. From what I can see, the coil is getting the power and signal it needs. However, nothing comes out of the wire that goes to the distributor. I've looked through the wiring diagram, and there is a black and red wire that goes to the coil. It traces back to the ECU, the ignition switch, and the fuse that it goes to. On the other side of that fuse, is a brown wire that traces back to the huge IACV plug... Could cutting that plug have fubar'd something?

There are a few other things I'm clueless about: a light green and black wire that goes from the "resistor/condenser" to the coil, and to the "power transistor"; and what the black wire (looks like a ground) behind the coil is doing.

Thanks guys

edit: I wanted to test my coil but I'm honestly not sure which wires I need to be checking, so if anyone could help me out with that. I've beem through the FSM, but I guess I could've missed it.

[raven2345]

Not a single person has a lead on this to help me out? My whole harness got pulled quite a bit, and I'm at a loss to figure this thing out.

[terry_240sx]

i'm not sure if this scenario would lead to it, but you could try using a different ecu.
i wasn't getting spark and that's what it turned out to be
good luck!

[raven2345]

That's somethin I've been thinkin and have been waiting to try out. Thank ya sir.

[OutToWinPAHC]

I believe we did try to help you, you need to check the EM section of the FSM for the spark troubleshooting tips. Check the ECCS relay, the fuses, the ignition relay and try those test.... I think you damaged the ECU

[raven2345]

I would guess it was another person with a similar problem. Hahah thanks though. Any, I've been following the whole diagnostic test for the "Ignition Signal" in that section. All of my fuses under the hood are good. I've yet to test any of the relays just because the FSM doesn't mention it in the section. I'm thinking the ECU could have gotten messed up if something shorted out...

In the EF and EC section of the FSM, I'm looking at page 104, and followed it to 161 and 168. On 161, the power transistor and coil both checked good. The resistor on 168, I haven't figured out how to unplug it without breaking it. I'm sure it's simple but it doesn't look it. I would assume I'm just not getting signal to the resistor. The yellow/red wire going to the resistor is the output signal I do believe, which I can't test because I can't get the resistor unplugged.

[raven2345]

The ECU was it. I tried a friend's and the spark was there. My car cranked for literally a second then shut off. I'll figure that out after I have a good ECU. Thanks for all the help.