[mwebb]

as measured on the signal side
the side that is NOT powered up but the side that gets grounded by the ECM

peak and hold


saturated driver


saturated driver at WOT snap
note in this image in the upper left corner , DFCO decel fuel cut off
if you have the scope on the correct pin , and you snap the throttle to wide open , for a tiny little bit , just enough for the engine rpm to get high
then release the throttle
as the engine slows down , the ECM should shut off injector signal
as shown in upper left , if your scope does not show that and the waveform looks weird ... compared to examples above .
you are connected to the wrong injector pin