Ignition System Designs, Operation and Testing (an SD Premium video)

For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.

[@prmayner]

Hey Scanner you don't have to sell me. 10 bucks a month are you kiddin me? I dare anyone to find a better deal, no i double dare them to find a program that even comes close to comparing to what you have to offer. Your teaching's have helped me just about everyday i'm open for business. I must say before i would just be guessing and throwing parts at the vehicle, now after watching you on You Tube and subscribing to your channel i can say i'm very confident i can fix just about anything that comes in the door. Talk about direction!! YOU HAVE GIVEN ME THAT and so much more and i can't say how much that means to a one man show like myself. Thank you, God Bless you and i hope you make a fortune. You deserve it.

[@ScannerDanner]

awesome story, thank you for that. it feels good to hear what I am doing is helping guys like you make a living. you cannot put a price on that!

[@hustlerforgita7538]

Yeah agree

[@jordankahele14]

With a comment like that what else is there to limit the knowledge, and experience you have in diagnosing a no-spark. A God given talent like that is so awesome indeed, it would be ashamed to have those expertise go to waste. Thanks Paul!

[@4dirt2racer0]

FUCKIN RIPOFF!!!!! :p im jp

[@prmayner]

@@4dirt2racer0 LOL

[@dmorley100]

Definitely agree. The ScannerDanner Premium channel is AWESOME!!! I remember the way you used to do the lecture videos, I couldn't really take advantage of them due to the videos would stop streaming after the first 2-3 minutes every time I tried to watch them at the house. I would always have to watch them at work or somewhere else to get to watch the entire video. Since I subscribed to the ScannerDanner Premium channel, I've had ZERO trouble watching the entire lecture videos. And what you get access to is worth 10 times the price being charged easy.

[@ScannerDanner]

thanks dmorley100!

[@stevensapyak7971]

3.12.14. I am an industrially trained Elect/Instrumentation Tech,with 32yrs experience. The videos that you've put on KZbin are with out question the most concise content on the subjects you cover! I have a deep understanding of electrical theory, & you give a unique perspective on trouble shooting problems! I'm not an auto tech, but any of the younger guys out there will not find ANYONE that instructs like ScannerDanner! I have trouble shot crank sensor intermittent problems just by watching and don't have a scope, on a Buick 3800. You couple his premium Site with books and you'll be on you way in the top percentile of TECHICIANS!

[@ScannerDanner]

man, what a great comment. I really appreciate your feedback, especially given your background. It means a lot, thank you so much

[@richard1835]

I can't get enough of your teaching. This is great ! I have a DS708, but I can still apply your Logic and Instruction to my Diagnostic Routines. I want you to know that you are Greatly Appreciated ! Richard

[@ScannerDanner]

+Richard Frank Thank you Richard!

[@DJDevon3]

You are amazing. I plan on getting a subscription just to enhance my DIY skills (no shop tools). I agree that your classroom lessons are something that you cannot find anywhere else in the world at least not now. Honestly I think this is the future of education and you are spearheading it for the automotive industry. In the future the industry will look back and recognize you as a pioneer.

[@ScannerDanner]

wow thank you so much!

[@1quickchevy2]

I'm only a weekend warrior, and purchases your book. It's worth every penny. I will also sign up for your premium channel, as some of your knowledge is priceless. Also the way you explain everything is clear to the average tradesman and not a bunch of engineering mumbo jumbo! Thanks for putting in all the time it takes to do this.

[@ScannerDanner]

and thank you for your comment and support!

[@spelunkerd]

As you know I'm slowly working through your video set when time allows. I think I watched this one before, but I forgot to tag it with a thumbs up so I got to watch it again today, ha ha. Worth the review, in any case. I wasted a little time today looking for the extinct ignition module on a COP 2000 Suburban yesterday. It's hidden on top of each coil.

[@dznuttzonyachin7499]

Glad I found this channel !!

[@jimdmichelle850]

Scan-Dan is great, I can not believe how much I have forgotten . So all he is sharing is great, and I am only 68 so i have no problem sending a 10-20 a month donation. So please send details on that. Right now I have a 2001 S-10 no start no injector pulses. I spray S.F. in intake it will run, as long as I keep spraying. I think I can remember after I do hands on for awhile so thanks hundreds. Everyone should be highly thankful, and respectful for the help..

[@ScannerDanner]

You can join SD Premium right here for $11 a month www.scannerdanner.com/join-scannerdanner-premium.html Thank you! Are you saying after to spray it for awhile it will run on it's own? What is your fuel pressure during cranking?

[@scientist100]

You always give direction and from there, if you apply these principles, you can create your own methodology based on understanding of the inner working of computer systems and modules.

[@zackarywest8568]

wow , i have been a tech for ten years now. When I went to school that didnt show us basic ignition due to the fact its outdated. I see many people on here say you are the greatest teacher. You really are.

[@ScannerDanner]

Thanks so much Zackary West! And all of these principles still apply to the 2, 3 and 4 wire C.O.P. systems of today. Crazy that this isn't taught. I believe it is foundational.

[@wyattoneable]

What your offering is the best on KZbin for this field! I've not yet signed up for the premium channel but as soon as I get back from a three week vacation I'm on the channel to supplement your paper book. Great work here Paul. I've been enjoying the process.

[@ScannerDanner]

+wyattoneable when you're ready, email me and I'll give you a coupon for a free month. Thanks man!

[@1zicuiran]

ScannerDanner I just watched your video and made notes, after reviewing the notes I was able to understand the whole lesson. I am thinking about subscribing to your premium Chanel and buy you book, because, I think they go ✋ by ✋.

[@user-rs1lc2fx4w]

Dan you are in the right track fill the brain to direct the hand to the right fixation , you are the best man

[@VedafoneYT]

Thank you Mr. Danner for your presentation... Good work

[@Thunderroad8517]

Thanks Dan, Yes its worth it. Been here over a year i think.. Keep up the great job.

[@israelzunigamascorro9300]

awesome video Mr Danner, thank you for sharing you knowledge and blessings

[@ismailmecano5721]

Thanks Mr.Dan for all your vidéos...

[@giladinator]

Love your honesty and fully support you. Years of hard work are not for free.

[@ScannerDanner]

thanks Gilad!

[@jeremymatthews8087]

Hi Paul, spot on training vid just got your e book will be on premium channel as well you take your time to explain and train i am old school 55 year old plugs and points/carbs mechanic from england but have recent got snap on verus and other stuff like the way you verify that faulty component or wiring etc. you really are an asset to the trade and one of the best teacher/technican out there, keep up the good work, cheers jerry

[@ScannerDanner]

thanks so much Jerry!

[@ruinman8722]

I will definitely pay for the Premium videos. You're an amazing teacher and I just needed this kind of content. I live in a small town in Europe and I can't even find a school nearby where I could learn such things, so mate, you've rescued me!

[@ScannerDanner]

Thank you so much! You will not be disappointed. If you are in one of the non listed countries you can use a VPN to access my paid channel. KZbin has placed restrictions on the paid channels. Not sure why.

[@ruinman8722]

Thank you for the info! btw. I'm an IT technician, so I will find a way to see your videos!

[@glen-ozzstarscars8474]

Fantastic, clear explanations. I liked knowing about the Ford bypass ign system. On my 1987 Ranger I made a YTube video on where the in-line spout connector is located and removed in order to set the correct timing (adjustable distributor). I couldn't find much info on it. Thanks to your video Paul I now understand that when the in line fuse spout is disconnected it isolates the PCM from the ICM...... thanks!

[@ScannerDanner]

thanks ozz!

[@LynxStarAuto]

Paul's school just needs to make his class virtual man. Just stream him online. Of course give the man a pay raise, maybe some bonuses because think of all the financial aid students from around the country tuning in.

[@ScannerDanner]

I've thought about doing some live streaming. It is on my radar for sure!

[@falahal-tai2979]

Thanks Paul. Very informative lecture.

[@trampusjohnson3228]

I am an out board tech, Mercury Certified. I am very intrigued, by this Video.

[@MrJAa85]

You are fantastic! Thank you so much for sharing your awesome skills and with such a great teaching technique! I'm not even in this business/field (at least professionally), but your videos are just so inspiring and great! Makes me want to learn more. Keep it up, you are really doing sooo many people a great favour just by being you, and by being so passionate in regards to your field. Greetings from Norway :)

[@ScannerDanner]

Thanks so much!

[@MrJAa85]

No; thank you :) I wish I lived near PA, to be able to attend your class in person. Watching these vids is making me want to go into this field, although I'm already 31 yeards old, and already have a different career! Anyway, keep up the good work, and God bless :)

[@nasirkamal7560]

excellent discussion. very informative.

[@all-about-programming]

You really the best teacher...... Really you are

[@DJDevon3]

Awesome lesson on Ford's ignition circuit thank you. I've always wanted to know why I have an ICM! My Mazda 626 has EEC-IV and I've had a PIP circuit code set once. You have to remove the SPOUT connector in order to set idle speed and ignition timing. Not only can you have spark with spout disconnected but you're supposed to for timing and diagnostic mode.

[@wamburaskinyunyi2276]

Thanks Danner for nice presention.

[@ahkillez64]

Excellent material to study

[@jleuck64]

Back in the day.... while attending a Toyota tech training seminar the Instructor told us that IGT stood for ignition trigger and IGF stood for ignition fire. It was a simple explanation for those silly acronyms Toyota uses and I've always found it easy to remember ( ; Good info you are giving to your Pad-A-Won Learners!

[@pedropacas6091]

Hey Paul, Cleto her.Thank you for sharing all you knowledge. I have learned a lot from you. We need teachers like you and you toys here in Dolores, Hgo Guanajuato mexico. Keep up the good work. We really appreciate it.

[@ScannerDanner]

+Pedro Pacas thanks Pedro!

[@SCAMPL6]

Awesome explained

[@leebranch1228]

Hi Scanner: I have a 1992 3.8 Buick w/trans and ECM and all original looms (except starter switch wiring thru firewall) installed in a Lesharo Motor Home. I need info to get power to the F.I.s and Ignition circuits. I would be happy to compensate yourself or any one who could point out the best way to go thru some 'add on' relays and power up the required fuel system and ignition. I have pinouts of the ECM and of the three plugs that attach to the ECM. I am uncertain of where to hook in the B+ correctly. I am 87 and only recently have inquired into the 'post 1970's vehicle electrics'. I love your presentations and assure friends that if they appreciate Sherlock Holmes they can certainly enjoy the pursuit of a elusive fault by modern techs such as yourself. So thanks for any help with 3.8 and for the entertainment, as well.

[@RajuYadav-fd9wl]

awesome teaching..

[@cbobcbob100]

great job..... one of your best....bob

[@8power0]

That was a super class i have your book and will consider spending the money .

[@ScannerDannerPremium]

+8power0 thanks man. fill out the form on my website and I'll send you a coupon for a free month. just mention this conversation

[@drlock4742]

great video bro.. u got an amazing channel

[@theASEtech]

I will keep trying thank you Paul Dannrer

[@ScannerDanner]

Also, try logging in on another device. The issue I was describing seems to be only affecting mobile devices (where you need to log out, then log back in)

[@MrRockenbob]

Scanner Danner you're doing a great job. You have great videos thanks for your help. I'am a KZbin video fan always looking for ways to get the job done efficiently way to go KZbin. Again thank you for your time Scanner danner.

[@ScannerDanner]

Thanks Robert!

[@williamtanner8222]

Mr. Danner, first off, I'd like to thank you for what you're doing and the videos you put out! I've been in the automotive field for almost 5yrs now but have never just been thrown into diagnostics until moving and starting a new job about 4 months ago. I've learned a lot since my move, but have been wanting more. Learned about your channel last Friday and have been watching nonstop since! Planning on ordering a hard copy of your book within the next week or 2 and subscribing to Scanner danner premium. I'm sure you get this a lot but I was wondering if you could help me with a problem child. Customer brought her car in for running rough. After informing her she'd have to leave it, due to us being busy, she made an appointment and upon attempting to leave the car wouldn't start. She left it of course. Vehicle is a 95 Toyota Celica 2.2L automatic. Found the vehicle had no spark, knowing the ignition coils inside the distributor on Toyota's have problems, and seeing the connectors on the distributor were broken, I replaced the distributor assembly. Good to go, have spark. Nope. Next thing I find is the injectors are constantly grounded via the pcm with key on, and with cranking, so no injector pulse, just constantly grounded. Check my wires to injectors from pcm, check good. Check powers and grounds for pcm, all check good. Replaced the pcm with a used one from junk yard. Alright, good to go, injectors pulsing as they should, but guess What? No spark again. Well, I shouldn't say that, the car did start and run for an hour and a half yesterday. Drove it, shut it off, restarted, everything normal, awesome. Today, won't start, no spark. Found one of your videos on testing the Toyota igniter. System was a pull up design I believe you referred to it as (No voltage at igt circuit), introduced power via test light, had spark from my coil. Vehicle will now intermittently start for a second but immediately stall. My dad whose owned a Honda/Toyota specialty shop for over 30yrs is thinking it's the ignition coil and states he's read article after article of these aftermarket Toyota coils being bad out of the box and tells me to get a Toyota ignition coil to solve the problem. What's your take? Any ideas? Something I'm missing, overlooked? Any help is greatly appreciated

[@spelunkerd]

Five years after watching this video, I came back for a review. If I could give it another like, I'd do that, it is even better after a few more years of -practical experience- greying hair.

[@johnathanconor4698]

man. thank you for the info

[@olusegunsogbesan3789]

Thank you...!!!

[@marvinnaputi7867]

Tha k you for the lesson on no spark I have a batter look at we're to look at God is good all the time. You have a blessed day 🙏

[@ScannerDanner]

Yes He is! Have a blessed day my friend

[@mustaphaabdul-hamid6547]

In fact, I have understand everything with regards to the topic

[@paulfiebke3909]

Keep up the good work

[@Kdog307]

Why haven't I found this channel sooner subbed

[@ScannerDanner]

Glad you did! Thank you so much

[@rinzanb9715]

Paul, first all thanks a lot for updating your videos. I thought people are opposing to pay less, and they want to pay more. Here is a example how business work, if you buy a can of coke in one dollar, Coke factory sell the coke to wholesaler at 50 cents, wholesaler sells the coke to retailer a at 80 cents than finally retailer sells the coke at one dollar. That one dollar is not the whole profit of the retailer. But as a consumer we that guy make one dollar just selling a can of coke. Similarly scannerdanner doesn't get whole ten dollars. You have already explained in one of your videos that to keep your videos on youtube running it cost money youtube too. Other thing is I have been looking for your kind of explanation for years everywhere not just on internet, bought everything possible whether I could learn something out of it. Did I learnt something, yes I did. But it's the same thing I learnt from other sources not like yours that actually works on fieldwork that can fix car in short time. My point is I could not buy what I wanted, though I wanted spend money on it. Your tried to help people teaching the secret in weeks that you developed over the years. I couldn't buy that much knowledge that cost only ten dollars in a month anywhere that's why I am here. Please let me know Paul which video you are getting opposing kind of comments, I like to leave my some feedback too.

[@ScannerDanner]

appreciate your insight and public comments on this.. I feel the same way, I just need to convince the masses that what I am offering is dirt cheap for the amount of training that is available. thank you so much for your support!

[@lindaloohootoou]

I am curious what make and model you drive during the work week, and then what you drive on the weekend? Don't let this go to your head, but your mechanical knowledge and teaching, well its pretty darn good!

[@ScannerDanner]

haha thank you! I've been teaching at a technical college for almost 17 years now and have been a tech for more than 26. I've just been around for awhile :-)

[@SethHarr]

I wish I could be a part of the class and so thankful for all you do Danner.

[@ScannerDanner]

What country are you in Seth?

[@SethHarr]

ScannerDanner Im USA. Im glad to have the videos but I wish I could be on location for your classes is what I meant.

[@ScannerDanner]

Seth Harrison oh yea, I knew that, my fault. I would love to have you in my class in person too

[@carlosalbertoalvarezlagune2585]

super bien gracias ojala y lo puedas hacer en español

[@todpatn9782]

I love that ghost pen

[@darcar7319]

Very good video. I just want to say that Ford at least on his 97 Ford Mondeo 4 Cyl do uses ignition module, but only in models with automatic transmission only. I don't know why not using for manual transmission. It is a good question to know the reason why, isn't it. I hope to help in this topic

[@mustaphaabdul-hamid6547]

So interesting

[@jesusmalagon4336]

thanks

[@megomiftah]

thanks mr paul from one of your pupil in pakistan

[@ScannerDanner]

Nice to meet you brother!

[@kayjaxnblondie]

Could the IGF signal be used as a coil monitor or warning lamp to notify of a faulty coil?

[@saulorozco5787]

Wau no adjective to describe you great knowledge great teacher. How can I buy all these información in paper book

[@tallevi6172]

IGF stand for Ignition Feedback I believe, does it make sense?

[@elisahachiles634]

Sir thanks for the information regarding the diff. types of ignition wiring diagram 2 wire ,3 wire, 4wire but to my understanding all of them are control by the computer is that so thanks

[@ScannerDanner]

yes it is, they are all computer controlled

[@iqbalmamdouhi6496]

merci

[@deyantodorovski4805]

Scanner Danner please I am a subscriber on you premium chanel but I hope you can film more troubleshooting on ignition systems in the future on European cars

[@ScannerDanner]

I have quite a few Euro case studies and classes on these systems. They're no different than any other system really. With the exception of the secondary winding of their ignition coils being grounded all the time instead of connecting to coil positive. GM used to do this too with their HEI coils.

[@gtuttle4]

Great video! I was hoping you could help me with a problem that I am having on my 89 Chevy 5.7 K1500 truck. My initial problem was it would not start, because it's 33 years old with 150k mile I thought I would replace the fuel pump. This was not the issue, still would not start so I check for spark, no spark, so I replaced the primary coil, pick-up coil, ignition modular, distributor shaft, cap and rotor button. It started right up and ran. I unplug the advance timing by-pass plug to set base timing on TDC. But, with the EST unplugged it will not start. Base on your video, would you say I have a bad new ignition modular?

[@ScannerDanner]

Are you sure base time is set with unplugging something? On some of these you'd jump pins A and B in the 12pin DLC for base time. Describe the EST wire you unplugged. It should only be a single wire

[@blackhandkesfla8687]

don't the PCU deliver the battery voltage to the ICM? so if the PCU goes down then the ICM won't get spark right?

[@douglasaram8750]

Hey scanner what is wrong if the ref 5volts present and only IGT2 received the signal and the weak IGT signal on the other 3 coils? cos the issue was the engine run and stall after some seconds. the engine keep running with misfire after I connected the IGT2 with IGT1 and same applied from IGT2 to IGT3 & IGT4. but it keep stall if the wire connect from IGT1 to IGT3 or IGT4 excluding IGT2. what would be the right direction.. cheers Douglas

[@movingupautodiagnostics8645]

Hey Paul, what's the idea of having 2 transistors? On 3 an 4 wire COPs the base circuit driver is inside the coil, but I'm suspecting that another transistor inside the PCM is commanding the base circuit to on and off..? Also, by using an amp probe on these designs, how much amps can I expect to see? Thanks brother.

[@nicke2307]

i was thinking the same thing. My guess is that by using pulses from the PCM to trigger the coil you are dealing with much lower current and run a lower risk of frying the PCM and you let the coil deal with the higher current

[@dondesnoo1771]

nick elias I believe timing advance created there with eng. speed and mass air and TPS. cks. .

[@t33s]

Dear Mr Danner Is it possible for you to remove the US region block for ScannerDannerPremium? I'm from Poland and I study automotive engineering at Cracow University of Technology. Watching your free videos helped me a lot in learning for my classes, practically I only had to look once through my class notes to pass the car exploitation exam. I considered buying the subscription for your premium videos to learn more about car diagnostics and troubleshooting, but I can't because it's not available from my country. I could use some tricks with connecting via US proxy servers, but I'm not even sure if that's legal, and I think it would drastically lower transfer speed anyway.

[@victoraguilera7233]

im the lead technician at my shop all thank u to scanner danner victor aguilera

[@charlescarrature6467]

Hi Paul, Thanks for all your videos, I do have one suggestion....If you clearly mark the emitter of the transistor, it would be much easier for your students to identify current flow as typically the collectors are reverse biased. Your diagrams as indicated don't make sense because you cannot see that the base emitter current is controlling the base collector current...

[@wamburaskinyunyi2276]

My request to you on your tutorial showing with real examples will be very helpful. I will know what to do. training is good we lack practical training.

[@jonjeans8011]

I Love You.

[@TheFortis3]

The start of the video is showing vehicles with distributor right?

[@xylonify]

Hello, Paul. Just out of curiosity, if the transistor in the 3 or 4 wires coils were shorted to ground and caused the coil to melt, that can affect the base turn on wire(IGT) and possibly cook the transistor in the pcm, right?

[@ScannerDanner]

yes sir

[@sablan02]

Hey Paul, I was wondering if you had any information on European cars that's on your premium page? Bmw in particular. I would like to learn about the designs of ignition system it has just like you did with this video. Thank you and thanks for all the videos!

[@ScannerDanner]

Nothing specifically but everything I do is fundamental to all cars. I may not have specific euro market case studies but the info transfers for sure. Thank you!

[@weshawkins7165]

What if you don’t have fuel coming out the injectors during cranking? I have a 1990 Chevy pickup in my shop now that has a hot intermittent no start with no fuel coming out the injectors.

[@chechen1964]

HI there, if i put a 1.5 cylinder head on a 1.6 motor, do i have to change the injectors

[@kevintreat3895]

Paul, Probably a stupid question but on the 3-4 wire COP designs....the transistor in the PCM that controls the transistor in the coil....how/what switches this on/off positive of negative voltage(at the base) ? What is the emitter connected to...I take it the collector is the wire coming in from the coil transistor,keep getting collector/emitter confused...

[@ScannerDannerPremium]

What switches the transistor inside the computer? Another transistor :)

[@elisahachiles634]

Sir from the coil on plug system 2,3,4 wire what the source voltage voltage of the power feed came from outside the pcm or in the pcm thanks

[@ScannerDanner]

the main power to an ignition coil, regardless of design, is from an external fuse protected circuit connected to an ignition positive source.

[@albi2k88]

There is 3-wire C.O.P. without transistor. Early VW 1.8 Turbo has external igniter + 3-wire C.O.P. there third wire is a ground for secondary winding. I think that some other late 90's - early 2000s European cars (ex. 6 cylinder BMWs, late VW 1.8 Turbo) even without igniter has 3-wire C.O.P. coils without built in transistor.

[@megomiftah]

IGF is ignition feedback

[@jesselocke69]

Hey Scanner Guy! Ive got a 2001 chevblazer that "sparks w/key on" just like subaru. Need some help. No start

[@kevintreat3895]

yes I know it's another transistor..BUT is the base of the transistor in the PCM switched on and of with power or ground and what is the emitter connected to on this transistor?

[@ScannerDanner]

I don't build computers my friend. Your asking me component level electronics now. My guess is they can control it however they chose. There is no set standard. Good luck finding this info. The manufactures hide it from each other.

[@kelvinrandolph8248]

I bu your channel every year. So how can I get certified?

[@ScannerDanner]

I don't offer certs, but you can sign up for ASE certifications on your own. Many of my students credit passing the A8 and L1 certs to my teachings.

[@mohamedelshamy2706]

Paul , your video is wonderful I have a comment in time 28 you talked about Toyota 4 wire type and you draw a Blue line for IGF and I think it is wrong I think that IGF should be attached with Secondary not Primary coil because if there is an open in secondary circuit if there is no current in Secondary circut there will be no confirmation to PCM that there is a spark generated in the cylinder so, the computer will cut the fuel injection at this cylinder and I thick your blue line should be attached before not after Secondary coil best regards Eng. Mohamed El Shamy from Saudi Arabia

[@ScannerDanner]

Thanks friend. It may be tied into the secondary as you stated. I guess my memory is of seeing a diagram with it tied into the primary winding.

[@tommavrakos]

My 92 chevy van g30 beauville has the 4l80e and doesn't shift into 3rd or overdrive.has 1st and reverse.limp mode.code 81 82.no one can figure how to fix.any ideas how to bypass computer

[@syedimranshah4721]

Hi, can you suggest a method to find out whether the power or ground signal of the primary winding is being amplified by the secondary winding of the ignition coil. That would be the polarity of the spark that comes to the spark plug, whether positive or negative.

[@ScannerDanner]

Why do you ask? For a secondary scope waveform?

[@syedimranshah4721]

ScannerDanner Well I read in a book (Performance Tuning in Theory and Practice by A. Graham Bell, 1981, Chapter: Ignition, page 183) that spark jumps easily (less voltage required) from the center electrode to the side electrode of the plug. This means that ideally the spark plug center electrode should be negative. Now it remains to confirm it on the vehicle. Reading page 167, apparently it can also be confirmed by checking that the transistor is switching on/off which primary coil wire? If its negative primary coil wire for a vehicle with negative ground, then the coil polarity is ok.

[@ScannerDanner]

The center electrode is negative on conventional and c.o.p. systems. On waste spark it can be negative or positive. Each coil will have a negative and positive firing plug. And it is not determined by the switching polarity (they are all ground side switched), it is determined by direction of current flow through the primary winding.

[@syedimranshah4721]

Thanks.

[@maxmcquait8447]

i have no inj pulse and know check engine lite and know key on power to ecm 89 chevy trk help please

[@gsxrisaac]

Questions. I have a 2001 nissan sentra 1.8 And I have a misfire on cylinder #2 no spark on the coil, but I switched a good coil and still no spark. What could be the problem.

[@ScannerDannerPremium]

Oil in the drive plate inside the distributor. Section 21 in my book if you have it. Pull the distributor cap off, then the rotor, then the black cover underneath the rotor and you'll see what I'm talking about. You can temporary fix it with brake cleaner and blow it out with an air gun

[@zochpeter]

Suzuki Swift a la GM Metro uses bypass system.

[@theASEtech]

I can't find the scannerdannerpremium where you show scannerdannerpremium play list

[@ScannerDanner]

Log out, then log back in, then click the ScannerDanner Premium tab in that order. It is the cashe on your phone that is preventing you from seeing that page.

[@rupertsaunders6244]

Hi Paul or anyone who may be able to answer, I have a question regarding a VAG 4 wire cop. There is a common bat + feeding through the primary windings to the transistor, a ground from the transistor, a signal from ecu to transistor. My question is regarding the 4th wire which the wiring diagram shows as connected to secondary windings and going to ground. Why is this wire required and I assume the coil is actually similar to the 3 wire design in the video?

[@ScannerDanner]

Yes, the secondary has its own ground wire. GM did this back in the day with their HEI ignition coils. The secondary winding can work connected to a 12v power or a ground, as weird as this sounds. So yes, you basically have a 3 wire design COP with an extra ground

[@rupertsaunders6244]

Thank you very much. I’ve been a technician for over 20 years, but after being pointed towards your KZbin channel I am learning a lot of really useful information. I will be subscribing to your premium channel in the near future.

[@ScannerDanner]

looking forward to seeing you there! Thank you www.scannerdanner.com/join-scannerdanner-premium.html

[@georgeowen3506]

Awesome video. Im trying to convert a 91 nissan ka24e 4pin distributor harness to run 2002 frontier ka24de 6pin distributor and use a 3 wire coil on plug system. Im using a megasquirt pnp2 ecm. I cannt change the 91 ka24e wiring harness. How do you wire the 4 pin ka24e distributor to run the 6 pin ka24de distributor and use coil on plug setup? The 4 pin has 12v, ground, 180° ref, 1° ref. The 6 pin has . 1. Ignition A 2. ground 3. CKP signal - crank 4. CMP signal - cam 5. sensor ground 6. Ground I've wired 12v to 1, Ground to 2, 1° to 4, 180° to 3. The pnp2 jumpers are configured for wasted spark and have pin outs for spark abcd, A&d wired together b&c wire together. 3 wire Denson coils 12v, Ground, signal all wired to 12v switch, Ground, 1&4 signal go to a&d @ ecu, 2&3 signal to b&c @ ecu. When ignition is turned on coils get hot. What am I doing wrong?

[@ScannerDanner]

This one is complex but I can help you. Let's move this one to my forum www.scannerdanner.com it is free to join and we can share pictures and images that way. Let me know when you post it and I will jump over and help out

[@carslover3509]

Hi scaner danner ilive in Iraq how can I got your book please ?

[@ScannerDanner]

From my website at www.scannerdanner.com, you will be redirected on the paper book sale to my friends at aeswave.com who are the exclusive paper book provider for me. Using USPS we can ship anywhere in the world for $25. Thanks!

[@victoraguilera8724]

Paul how do I get into it premium channel

[@ScannerDanner]

Just click subscribe and follow the directions. If you need help you can go here. support.google.com/youtube/answer/1231720?hl=en&ref_topic=3015812 Also they provide phone support for the paid channels!

[@randy1ization]

what controls timing during cranking

[@ScannerDanner]

the ignition module itself

[@mauricegonder4021]

I try true the key on the motor will not true over

[@randy1ization]

cryslers TIPM system should keep techs busy for the next 40 years

[@randy1ization]

my 89 chevy scottscdale doesnt have a crankshaft position sensor, if I unplug the refrence wire, the truck still runs

[@ScannerDanner]

technically it does, it is the pick-up coil in the distributor. And if it is fuel injected, it definitely will not run with the reference wire "unplugged". You are probably confusing the by-pass wire with the ref wire.

[@randy1ization]

its the wire that I disconnect to set the base timing brownish wire

[@gsxrisaac]

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