I was troubleshooting my no start on my EF Si civic. I replaced dizzy coil and igniter, tested it and producing spark a day before. I put everything together and trying to start it altogether.

Now I have no spark again. I swapped 3 different coils and igniter and control module also. As well as 2 different dizzy housing.

Did I fried anything when it gave me spark the other day when testing? I put a screw driver on the Coil to test for spark. Unless all of my test parts in the dizzy are all bad, Im starting to think it might be the ECU.

 

Did you check your fuses?

 

Yes fuses are all good, except for the fuel pump which I took out to minimize fuel during testing of spark.

 

Before trouble shooting anything electrical I make sure all grounds are good and clean.
Take the screws off and wire wheel them, sand paper the area where they make contact. Remove all signs of corrosion around the grounds then begin looking for the problem.

 

Check for power on IGP 1&2 at the ECU, with ign. switch in run AND start. 94

 

Thanks everyone for the tips...I bought power probe and check pulse on yellow/green wire from ECU to dizzy and i'm not getting any light. From youtube videos, it said that yellow/green wire from ECU to dizzy should give pulse, when I'm starting it.

I will check Ignition pin 1&2 coming from ECU. I'm starting to think I fried the ECU itself when spark was working few days ago and testing it with bare screw on coil for spark.

 

Finally got it! It's the ICM and also the immobilizer from PO. Runs great now and always run on first click!