in all cases
check fuses, and scan it.
and do the test correctly , 2 coil packs are not test like 4 packs. not at all.
The J20 engines
so what country?
ours use 4 coil packs in USA.
outside USA some use 2 PACKS (wasted spark packs)
we cant guess what's under your hood nor, what EFI system is there. ever.
so ill answer for the USA setup 4x cop coils
C.O.P, coil over plug, x4
check fuses first (ig-coil and FI fuse)
check that Check engine lamp glows key on, if not power (elect) lost to PCM/ECU. (fuses blown)
ours is OBD2 compliant so all scan tools made here work.
next, is scan it, while cranking and in every case it tells you why.
the CKP sensor (crank) is behind the flywheel, (yes, transmission pulled.
the CMP sensor (cam) is on the left rear of cam. DOHC J20 engine
do not fiddle CMP, or lose spark timing. (compounding issues)
if you are compelled to fiddle about, match mark it first with a center punch tool or scribe. some later j20 cars the timing freeze jumper is in the factory scan tool only and no on left strut DCL conn. (mark it first)
that is it.. just sold all my suz. they are DOA here."bugged-out"
now my quesitons.
all 4 spark plugs dead.?
or just 2 (2 pack engine)
if just 2, then is it wasted spark 2 coil pack system
then yes, ? then use 2 spark plugs at one time, to test.
not 1 ever.
ask. or tell , or show a photo of your engine, if you want exact answers,
hints, (yes i travel outside usa and see all this...)
wasted spark has actual, old school spark HV wires on top of engine
some J20 have just 2 wires. and other half are direct fire.