the coil will spark if the voltage goes to 0v, holds there, for the 5mS seen on screen above
then if it releases, to 12v, the coil will induct, induction mode.
if this signal is good the coil is bad
if this signal is dead, the Ignitor is dead.
if the signal to the ignitor is good the ignitor is dead or has no power or ground.
or if the ignitor trigger is dead the ECU is bad, but if the inputs cmp or ckp are dead the the ecu will not fire its ignitor. (some of ours run with only CMP working (all G16b's do that) but most cars with CKP it must work, or no spark.
if direct coil spark is ok, then the rotor is timed wrong, or has junk china rotor, that is not indexed correctly.
or the distrib is timed wrong or 180 out, or wired wrong order to plugs, or wired CW when it should be CCW, (not sure what in this car)
the meter is only going to show averages.
what matters are clean signals,
some signals that are slow, can be checked with a meter, the needle wags on a CMP hall sensor, for example. 0v, the 5v, then 0v.
but if car has CKP and is just a 2 wire coil, not at all, the meter is useless here.
hall easy, coils only sensors impossible, lacking a scope.
the coil sensors, non hall, are just coils of wire and mag, and very very tiny signals there.
maybe this goofy system does not report cmp/ckp errors.
unplug them 1 by 1 and crank and see.? em? DTC fail?
if they throw errors good, if not, the ecu needs to be kicked thru the goal post of life, LOL.
The ecu says, the ignitor signal is wrong. in some way. (dead or weak or intermittant)
then if it releases, to 12v, the coil will induct, induction mode.
if this signal is good the coil is bad
if this signal is dead, the Ignitor is dead.
if the signal to the ignitor is good the ignitor is dead or has no power or ground.
or if the ignitor trigger is dead the ECU is bad, but if the inputs cmp or ckp are dead the the ecu will not fire its ignitor. (some of ours run with only CMP working (all G16b's do that) but most cars with CKP it must work, or no spark.
if direct coil spark is ok, then the rotor is timed wrong, or has junk china rotor, that is not indexed correctly.
or the distrib is timed wrong or 180 out, or wired wrong order to plugs, or wired CW when it should be CCW, (not sure what in this car)
the meter is only going to show averages.
what matters are clean signals,
some signals that are slow, can be checked with a meter, the needle wags on a CMP hall sensor, for example. 0v, the 5v, then 0v.
but if car has CKP and is just a 2 wire coil, not at all, the meter is useless here.
hall easy, coils only sensors impossible, lacking a scope.
the coil sensors, non hall, are just coils of wire and mag, and very very tiny signals there.
maybe this goofy system does not report cmp/ckp errors.
unplug them 1 by 1 and crank and see.? em? DTC fail?
if they throw errors good, if not, the ecu needs to be kicked thru the goal post of life, LOL.
The ecu says, the ignitor signal is wrong. in some way. (dead or weak or intermittant)
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