make sure g103 is not missing, this g103 is shown in the manual in chapters covering all harnesses of the 1996, ever inch is covered. well harness views. that is and all grounds have name.
and this one tops list of CKP fails only parked.
IMG my web page covers G103 , here. the most important ground for ECU is here. that CKP shield works its way to HERE,. look for broken wires, or bad crops here or loose bolt or rust.
(rust means any kind or form of corrosion in my personal rules)
http://www.fixkick.com/my96-16v/ECU-ground1.jpg
park is low RPM and low RPM means lowest signals. and with low signals, (any) noise is now an issue, the shield stops the ingress of noise (inductive) and harnesses on cars are noise makers all cars they are, not just this car.
or a bad alternator, is a huge powerful noise generators. some are horrible, I can demonstrate this, and then there is ignition noise.
so the ECU designer, used shielded cable, in fact the best cable is 2 conductor twisted pair shielded and grounded at one and not both ends.
too bad I sold my 96 , for you I'd do CKP test, and then with all things perfect and logged signals (photos) Id then stand off the CKP with card board spacers or milk carton plastic
making a gasket like stand off, and start at 1/16" then 1/8th inch and log the drop in signal.
the problem is there are like 5 CKP sensors made suzuki and many aftermarket even crap china no name junk. all with different Characteristics.
id check the G103 ground then scope the CKP output signals. (please forget calibration you are not doing 10mV work here or 30 or even 100mV work)
id ground bust the scope AC line jack and not let the scope ground out either of those 2 ecu pins above.
the scope probe black short clip is ground and is not just common the silly thing is EARTH safety grounded, (the scope is not double insulated so this is done NEC rules)
This is very dangerous work on say 1/2 the electrical and electronic equipment.
if you ground out many circuits you blow them up. (scope 101 here ok)
so we use this. thing a tech.calls a ground buster.
on a modern scope like yours if clean inside, is not going to put HV on the case but if you wanted you could check the scope out first. (I always do)
see if the floating the ground pin you create (busted) , if the scopes ground shows any DC or AC voltages. say connected to a 10meg ohm input DMM (DC the AC scales) in crude home DIY highpot test.
this is why car shops like battery powered scopes but we can use any scope. (no tubes scopes ever with 600vdc and 5kv inside) Your scope is very good. btw.
as seen here , the buster is here, $1
https://www.elliottelectronicsupply.com/...uster.html
keep in mind a real differential probe will set you back say $500 , and really is my TOPIC here.
if really paranoid (it's ok) , use a GFI wall jack for your scope, really all garages should have this GFI> mine does, and if not it would be installed by me day1.
here is the proof it works (GFI , is more advanced today even more choices of how well it works) like what if 2 wire electric drill gets wet (inside ) and you want protection (BINGO)
http://communities.leviton.com/thread/1080
and this one tops list of CKP fails only parked.
IMG my web page covers G103 , here. the most important ground for ECU is here. that CKP shield works its way to HERE,. look for broken wires, or bad crops here or loose bolt or rust.
(rust means any kind or form of corrosion in my personal rules)
http://www.fixkick.com/my96-16v/ECU-ground1.jpg
park is low RPM and low RPM means lowest signals. and with low signals, (any) noise is now an issue, the shield stops the ingress of noise (inductive) and harnesses on cars are noise makers all cars they are, not just this car.
or a bad alternator, is a huge powerful noise generators. some are horrible, I can demonstrate this, and then there is ignition noise.
so the ECU designer, used shielded cable, in fact the best cable is 2 conductor twisted pair shielded and grounded at one and not both ends.
too bad I sold my 96 , for you I'd do CKP test, and then with all things perfect and logged signals (photos) Id then stand off the CKP with card board spacers or milk carton plastic
making a gasket like stand off, and start at 1/16" then 1/8th inch and log the drop in signal.
the problem is there are like 5 CKP sensors made suzuki and many aftermarket even crap china no name junk. all with different Characteristics.
id check the G103 ground then scope the CKP output signals. (please forget calibration you are not doing 10mV work here or 30 or even 100mV work)
id ground bust the scope AC line jack and not let the scope ground out either of those 2 ecu pins above.
the scope probe black short clip is ground and is not just common the silly thing is EARTH safety grounded, (the scope is not double insulated so this is done NEC rules)
This is very dangerous work on say 1/2 the electrical and electronic equipment.
if you ground out many circuits you blow them up. (scope 101 here ok)
so we use this. thing a tech.calls a ground buster.
on a modern scope like yours if clean inside, is not going to put HV on the case but if you wanted you could check the scope out first. (I always do)
see if the floating the ground pin you create (busted) , if the scopes ground shows any DC or AC voltages. say connected to a 10meg ohm input DMM (DC the AC scales) in crude home DIY highpot test.
this is why car shops like battery powered scopes but we can use any scope. (no tubes scopes ever with 600vdc and 5kv inside) Your scope is very good. btw.
as seen here , the buster is here, $1
https://www.elliottelectronicsupply.com/...uster.html
keep in mind a real differential probe will set you back say $500 , and really is my TOPIC here.
if really paranoid (it's ok) , use a GFI wall jack for your scope, really all garages should have this GFI> mine does, and if not it would be installed by me day1.
here is the proof it works (GFI , is more advanced today even more choices of how well it works) like what if 2 wire electric drill gets wet (inside ) and you want protection (BINGO)
http://communities.leviton.com/thread/1080
http://www.fixkick.com