Suzuki Swift T3 conversion - engine no start

[fixkick]

oh boy the ignitor uses chassis ground, thats bad.


pin 1 is a 5v 0v square wave, but fast, it goes low for short dwell time. 10/1000 of a second
then the coil fires,
the cap there pin 3 is another noise suppressor.
the base goes to pin 1 , via a not shown resistor.
the pin 2 goes to pin 4 , via a voltage divider, network. and has a complex pulse out. (its the minus coil signal, reduced)
the noise suppressor is only for you r tachometer.. that way it cant kill spark if tach shorts, suzuki learns.....

with a scope we check pin 2 first if dead, we check pin 1. if dead, the ecu has problems, if its ok pin 1, then ignitor is bad.

but your ignitor ground is missing!
bingo
make a ground wire with lugs and find the best ECU ground in system and connect it.

thanks for sharing, fun to see the turbo version !!!