ignition pulse vs ignition pulse return on ecu [Archive]

rnbguy

10-01-2008, 08:06 PM

there seems to be two pins on the ecu, one is the ignition pulse the other is ignition pulse return signal

what is the difference? anyone know?

ECU-MAN

11-01-2008, 08:14 AM

I have always tought of it as the signal from the dizzy back to the ecu regarding the ignition signal.

rnbguy

11-01-2008, 08:56 AM

so whats the return? is that the signal back to the dizzy from the ecu?

dsp26

11-01-2008, 09:29 AM

I THOUGHT the return is for the tach? and th pulse is what ecu-man said.. from dizzy to ecu....

rnbguy

11-01-2008, 10:48 AM

your prolly right, im totally guessing here...

ECU-MAN

11-01-2008, 11:04 AM

A21 is the ICM triger from ecu
B15 tacho signal back to ecu

rnbguy

11-01-2008, 01:24 PM

ahh man i went to give u rep but it says i have to spread the reps before giving to u.. darn it....