This is an SD Premium class from a few years ago where I am using a live case study to introduce a new class to ignition systems and coil current ramp testing. To join my classes visit www.scannerdanner.com/join-scannerdanner-premium.html and sign up for the free trial! 00:00 - review of part 1 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qRvWefjb0F4.html 00:48 - @PicoScopeAutomotive 01:25 - low current probe connections 03:11 - initial settings of a lab scope (scale and time base) 09:00 - first view of the coil current ramp patterns 10:00 - scope sample rate 11:00 - when and how to use a scope trigger 14:00 - how to sync the coil current ramps (ID specific cylinders) 18:05 - moment the misfire occurred 21:30 - scope buffer 24:20 - open coil winding or open driver? 26:05 - view of the underside of the coil/module assembly 29:00 - ignition coil circuit design (driver in PCM vs driver in coil) 31:20 - what an open plug wire looks like 38:10 - final review showing the failure (2 cylinder misfire)
I have bypass key resistor crank fine but just injector not opening property. I move out injector and distributor rolling by hand injector open all when put injection key on
I've been going through all your playlists. I just made it through every video on temp sensors, and now I'm going through "position sensors" next. I've already been through all the fuel trim vids. Between your channel, Ivan's, Eric O's, Watch Wes work, Mario and diagnose Dan.. I feel like I've been through an automotive college coarse in this past year or two. lol.. I had no idea how much I was in the dark before. I'm in the zone at the moment, and I'm absorbing this stuff like a sponge. Loving it
Thank you so much! Also the way you're doing it is the way it should be done! Not many are as dedicated as you are. I'm very much looking forward to watching what you do with it in this field!
Awesome ! Excellent teaching techniques ! Loved the question you asked / taught - “ did we have an open in the ignition secondary (wire and spark plug ) … Answer is No because the current pattern at the end of primary (ignition coil) current ramp didn’t have a Big tail (back feeding ringing back into the primary) because it had no where else to go “ ! This tutorial had so much great information . It left no questions / details out ! !! Thanks Paul !
Great video as always. My background is electronics, but thanks to your videos, I can troubleshoot family cars (I hate being a mechanic-broken bolts, impossible to reach parts, burned and cut fingers, etc.). There is a test I use when I have an intermittent electronics problem that appears after a circuit has warmed up. I will spray the suspected (normally the active-high current) component with electronics cleaner, dust cleaner in a can, or anything that will cool the component. This quickly cools the suspected part, and if the problem is heat related, will often cause the component to start working again. On the Audi coil pack, there was a metal heat sink. This heat sink is used to draw excess heat off the three driver transistors since the transistors each flow several amps of current. When the cylinder 1/6 driver coil failed after the engine ran for several minutes, I would have suggested spraying the heat sink with brake cleaner, electronics cleaner, duster in a can, water bottle with a hole in the cap, or anything that would cool the heat sink. If cooling the heat sink restored the operation of the 1/6 cylinder coil, it would have quickly confirmed that the driver was the defective part..
Who cares about the numbers, that buffer is pretty fast. That's the kinda math I'm good at SD. 🤣🤣🤣 When you was saying the formula I said it's gonna be full pretty fast right before you said it. Numbers never lie, but sometimes with math being close is good enough. Great lesson as usual, I really appreciate you sharing your knowledge. Best diagnostic channel by far.
Solid content, excellent training, offered with no price, certainly under appreciated. However it's not, because you are finally being recognized for what you're worth... I mean really being recognized.
A nice little side experiment that you could do is to put a signal through a wire (or pull from an injector feed or coils, etc.) -- and play with your amp-clamp by half way opening the jaws and also maybe pinch the wires with the jaws, etc.. and just see what the signal does while you try all these different "wrong ways" to connect the amp-clamp. I just think it would be interesting to see how it affects the signal. (plus you could show how flipping the clamp inverts the signal, etc.). It probably wouldn't be it's own video of coarse, but I think it would add some unique content that no one else has done.
Great part 2 Paul very educational good stuff.Watched Part 1 forgot to leave a comment but gave a thumbs up.Can't get enough of these videos.Keep them coming God Bless.
Happy Christmas 🎄 Sir ScannerDanner My teacher Sir ScannerDanner INTELLECTUAL Sir ScannerDanner As always thank you very much for sharing your knowledge with us God has bless you thank you Take care Enjoy a great weekend with all your family around you INTELLECTUAL Sir ScannerDanner From Nick Ayivor from London England UK 🇬🇧
20:20 ... To determine which cylinder is which on the waste-spark setup, where you can see both 1 and 6 (for example) but you can't tell which is which, you can simply pull one of the secondary plug wires, and then it would fire on only one of them (I would think). (After the coil started failing again live, that wouldn't work though.) So you would probably just have to sync with one of the other two working coils -- then pull one of those secondary plugs, and finally you would have your sync, and could go from there with your firing order. That's interesting, it's so much more simple on regular coil-overs.
It would affect both (unplugging a wire on 1 side of a waste spark coil) To sync it, the best way is to use a capacitive secondary ignition pickup and clip it on a plug wire. You'll then see a high, low, high, low firing line. High = compression stroke and Low = exhaust stroke and now you'll know when the cylinder being testing is firing. Make sense?
@@ScannerDanner Ok, I see. So even then, you'll still see both sides, except for the local pressure change in the cylinder; that compression stroke will give it a high/ low effect. I'll have to remember that.
@calholli yes sir, the cylinder pair that is attached to that coil will alternate high and low firing lines. High on the compression stroke and low on the exhaust stroke. I have some videos showing this technique. But I don't know where offhand. I'd be in my chapter 22 and chapter 1 playlists. I think when I taught relative compression testing in my chapter 1 playlist, I showed how to ID a waste spark system
Thank you for how you show the videos Live capture is simply the best way .... problems , issues , results The student gets to see , review , take in how , when , why ( probably better than sitting in the classroom as it can be replayed over and over ) Thank you Paul ( and team and the classroom )
@boboften9952 this comment really means a lot. Not sure why this video didn't do well, but with feedback like this, it makes me feel so much better. God bless you
@@ScannerDanner A Boss , and good friend of mine , once said " You Tube is now my school " The comment was made about eight years ago Your channel proves this Thank you Paul ( and Team and Classroom )
Hi, I hope you will notice.. I would like to ask how you setup your screen for instruction? I am a technical training instructor also here in the Philippines. I would love to know what you are using to project the scope and at the same time be able to write on the projection like a touch screen.. I hope you can share it with me.
Hey Paul, great video and class. Do you ever get students that return after graduation and tell you that they actually get reprimanded at work for testing and not just unloading the parts cannon? I've had a few tell me that over the years, I then point out to them that's why their toolbox has wheels.
Hi, just hooked onto your videos recently. Based in qatar and considering diagnostics focus for possible workshop start up. If i purchase the electronic version book, can i print the pages as required or are there restrictions put on there? Thanks russell
You can't print directly from it, but there is nothing stopping you from doing screen captures on your PC and then printing individual pages. It's not ideal, but just do a chapter at a time while you're watching my classes. If that doesn't work for you, I completely understand and have no problem with a refund. Thank you so much!
ps...testing the coil last video could certainly mislead someone - seemed like the coil was fine when you tested with a test light. I guess that kinda shows how important it is not to jump to a conclusion(and also how annoying intermittent issues can be). I left the last vid thinking the computer was the problem, or wiring to the ecm
Hay Paul do you have a email address that I can contact you at? I need some pointers on my 99 Camry . Not looking for a miracle just some pointers . I have video and a photo.
@@ScannerDanner you do have a picture of the coils removed from the bracket and the wires from the coil drivers to the coils exposed. It would not be worth the effort for sure.
@tombeam from memory, those wires were underneath epoxy, and there would be no room to get an amp clamp in there. Also, an amperage measurement wouldn't have told us any more than what we already knew (current flow was dropping out). Some voltage measurements would have told more of the story as far as open coil or open driver goes. But as you said, it's all one assembly so we were done.
![Ignition System Testing - Primary Current [Audi A6 part 2 of 2]](/img/logo.svg){kind=logo}
