Toyota Ignition Systems Explained

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Just a brief walkthrough of how Toyota ignition systems work. If you liked this style of video, comment below and tell me what else you'd like to see!
Make sure to check out a friend's channel as well. Corey from S&A Auto!
/ @saautorepair
Also, remember to check out www.trainedbytechs.com to keep up with training locally, and nationally.
Also, if you want to contact me privately. My email is: [e-mail]
The views and opinions expressed are in these videos are my own, and have not been reviewed or approved by my employer, and do not necessarily represent the views and opinions on my employer.

[@VoltageDropDiagnostics]

Check out my amazon affiliate link to help the channel: www.amazon.com/shop/voltagedropdiagnostics

[@ScannerDanner]

Look at you with your non skippable Christmas ads :-)

[@VoltageDropDiagnostics]

ScannerDanner 😂🤣

[@CoolAirVw]

Are you a former student of ScannerDanner?

[@VoltageDropDiagnostics]

Only through his premium site.

[@PaulyD0859]

Outstanding! You’re an asset to the automotive aftermarket industry.

[@VoltageDropDiagnostics]

oh man! I really appreciate that!

[@toyotatechstudent3335]

Voltage Drop Diagnostics ... he’s right 😉 ... great job !

[@VoltageDropDiagnostics]

ToyotaTech Student thanks Carlos!

[@SuperMarioDiagnostics]

great explanation! Nice shirt! Always enjoy your videos PJ!

[@VoltageDropDiagnostics]

Corey said that it made me look like I lost some weight, too! haha

[@PaulysAuto]

The squeaking marker was excellent! 😘😘😘 Showing the secondary failure on the primary current ramp is GOLD! You are killing it on the explanation of how to pull the current ramp on all the cylinders and explaining how to do this man! Pat, you are an excellent teacher...MORE videos like this man...I'm always learning and you have soooo much to teach in that great mind of yours my friend...you shine here brother! I like how you explain that you can easily do it on the 4 cylinder, but are showing how to do this in case you can't get to it easily! I will always remember and appreciate when you taught me about the IGF CKT on the Toyota's...thanks for everything you do Pat! The white board👍 Excellent video!

[@VoltageDropDiagnostics]

Thanks man! I appreciate you watching and commenting! Now we just need to get some more videos from you! Haha

[@PaulysAuto]

@@VoltageDropDiagnostics right...I just gotta film it, not worry about the aftermath, and just deal with it! TBH...I enjoy taking a break here and there to get caught up with my friends out there on here and FB🙂👍

[@VoltageDropDiagnostics]

PAULY'S AUTO yeah, I hear that! It’s hard to keep up with it all!

[@flatratemaster]

Great explanation and video PJ!!!

[@VoltageDropDiagnostics]

Thanks Mike!

[@codysautodiagnosticsprogra8706]

Absolutely great video demonstration bro! You hit all the info on these 4 wire Toyota coils. Keep it up brother. Happy holidays to you and the family buddy🎄

[@VoltageDropDiagnostics]

Cody’s Auto Diagnostics thanks Cody! Happy Holidays to you, and yours, too!

[@david619dc]

Thanks you PJ! We all appreciate it

[@VoltageDropDiagnostics]

david cisneros thanks Dave!

[@georgebonney90]

Great video,yesterday i watched SD classroom lecture on the 4 wire Toyota cop system,thank u so much for taking the time to make this

[@VoltageDropDiagnostics]

I remember his video from a few years ago! He is the best!

[@arturos571]

great video. im not a Toyota tech but had an Avalon w a p0341 if I remember rightly. turned out to be a connector issue at the coil. diagged by moving coil and the problem disappeared which led me to the broken tab on the connector. I got "lucky". what you showed here would have been super helpful on that car. I learned something today. TY !!!!

[@VoltageDropDiagnostics]

Yeah! Those tabs are always broken off! I keep a drawer full of them because I need to replace them so often.

[@billyyoder8171]

Thank you Patrick. Great job. Have a blessed and safe week. If you ever get a chance to do a video on Toyota computer controlled charging systems would really appreciate it. Short video about 15 minutes testing and system operation. Using wiring diagram and KOEO connector unplugged voltage checks. Then connector plugged in and back probed, KOEO voltage checks. Then connector plugged in and back probed, KOER, using lab scope to check waveforms. Nobody has done any videos for Toyota computer controlled charging systems. Seen plenty of GM and Ford's.

[@VoltageDropDiagnostics]

Absolutely! Most of our alternators arent truly computer controlled, which is probably why you haven't seen many videos on them. I will have to look at some of the newer models to see in the newer models are nowadays.

[@High_Tech_Mountain]

Great video Pj! Thanks for sharing. Really like the use of the white board. Great explanation of Toyota’s ignition system.

[@VoltageDropDiagnostics]

Thanks man! You’re the best! My next video will also showcase the whiteboard! Lol

[@djosbun]

A superb explanation on how to see the differences between primary and secondary ignition coil failures. I need to invest in a decent 'value' scope and amp clamp (I'm not a pro tech).

[@VoltageDropDiagnostics]

Have you looked into the autel scope?

[@djosbun]

@@VoltageDropDiagnostics I was not aware that Autel offeted a scope-only device. I will look into that. Thanks for the tip, brother!

[@CubasAutomotive]

Great video Pj! Thanks!

[@VoltageDropDiagnostics]

Thanks, Cuba!

[@williamdrosos7103]

What a great explanation. Thank you

[@VoltageDropDiagnostics]

Thanks for watching!

[@d.d4184]

Nice video I think I seen the mad scientists giving the wrong information 🙄.Keep up the good work.

[@VoltageDropDiagnostics]

Thanks man! Giving the wrong information is one thing. Giving the wrong information while showing no respect for technicians rubs me the wrong way. We techs are already looked down upon. We don’t need someone publicly calling us asshats. But he has 50 times the subscribers as me, so he must be doing something right 🤷‍♂️

[@d.d4184]

@@VoltageDropDiagnostics your videos have good content give it time it will happen for you.Its problem best we ignore his lies he is just an angry little man.

[@andrewk778]

ALWAYS interesting and informative. Thank you for sharing.

[@VoltageDropDiagnostics]

Thanks, Andrew! I appreciate that!

[@msf375663]

Excellent video, thanks for taking the time to make this one and all your others. Mitch F

[@VoltageDropDiagnostics]

Thanks for watching, Mitch! I appreciate it!

[@marcop3517]

Thankyou this was really helpfull. I'm putting an aftermarket ECU (Haltech Nexus R5) onto a Toyota engine (1GZ-FE) with two igniters (driving 6 coils) and was trying to setup the Ignition output signal (voltage level) from the new ECU and match this to the IGT inputs to the existing igniters. The Toyota service manual for this engine shows the IGT (and IGF) signal in a graph which matches exactly your scope readings of IGT and IGF. The service manual shows a 4 volt peak sqaure wave on the IGT signal which made me curious - was expecting closer to a 5V or even 12V peak - just not 4V. Your scope readings confirm the 4 volt peak sqaure wave on IGT signal. The new ECU can output 5V or 12V to drive the igniters so the 5Volt setting should be close enough.

[@isalmankhan1]

Thanks for sharing this valuable information, great video👍

[@VoltageDropDiagnostics]

Thanks for watching!

[@TheTallPilot]

Thank you, good explanation

[@VoltageDropDiagnostics]

David E thanks man!

[@upkarbath]

Great work brother,thank you for explaining

[@VoltageDropDiagnostics]

Thanks for watching!

[@caliautotech21]

Awesome video and very well explained

[@VoltageDropDiagnostics]

Thanks for watching!

[@CoolAirVw]

Great video. what is going on with the truck on the lift in the background with the body off the frame?

[@ELEISONCARABALLO]

Awesome. Thank you very much for sharing this information. Thumb up for this video

[@VoltageDropDiagnostics]

Thanks! I am glad that you enjoyed it!

[@xlitovi3tbo1x]

Great information, very well explained! Thank you for your time making these awesome videos.

[@VoltageDropDiagnostics]

Thanks, man! You're going to be in Maryland for the Brandon Steckler class, right?

[@xlitovi3tbo1x]

Yes sir. I’ll see ya there. 👍

[@VoltageDropDiagnostics]

Christopher Vo yup, I’ll be there!

[@bigrockk2980]

Definitely learnt something, thank you!

[@VoltageDropDiagnostics]

Thank you!

[@muresanioan7130]

thanks

[@abraham01257]

Nice job.... How come you went for the snap on today and not the Pico ?.... I m still try to get the hang of the snap on ... bravo 👏🏾

[@VoltageDropDiagnostics]

I like showing different scopes. Plus, snap on just got me for a new, battery for the verus that was very expensive lol. So i felt like i needed to get my moneys worth out of it lol

[@J.T672]

Hi pat , always great to watch your video's. I'm very familiar with most of your Toyota engines which really helps. even though I'm in uk 🇬🇧 ,

[@VoltageDropDiagnostics]

Thanks James! I appreciate it and it is always cool to meet people from across the pond that also are working on Toyotas. Do they have a lot of diesel toyotas over there?

[@J.T672]

@@VoltageDropDiagnostics The only 2 diesels in uk are Hilux and Proace now . Proace essentially Peugeot with a toyota badge . I'm not on Facebook at min for private messages . Do you have Rav4 latest model and if so , have you come across B15C1 code, antenna, gps problem,? Vehicle also fitted with e Ecall , sos

[@VoltageDropDiagnostics]

James Twibey we don’t have any diesels here. It would be cool to have the hilux. We do have the new rav4s but i haven’t seen that issue with them myself.

[@stevenkietzke5582]

Well explained Thank you

[@VoltageDropDiagnostics]

Thank you!

[@tonycarter7269]

I stumbled across this video looking for info on a issue I created. I swapped a engine from a 2009 Scion tC into a 2005 Scion tC ( had to use 05 Harness and MAF Sensor) I didn't route the Second O2 sensor wiring correctly and the Power steering pump ate into it. The O2 shorted out the ECM. Popping the 20a EFI fuse I was a few miles from home I threw another fuse in got up the street and it blew again. Now I'm out of 20A fuses and used a 30A fuses I know better but I was just hoping I could make it home and fix the issue at home. Welp I did not make it hope the 30A fuse popped and i had to get a tow. I found the problem removed the intake so I could access the bare wires repaired them then started the car it ran for about 20 minutes and cut off. the fuse did not blow. Cranked it up and drove around the neighborhood got back home let it ran for a bit and it shut off again. Now it wont start at all I read the codes on the ECM and was getting a P code referencing all four Coils A,B,C and D I replaced the ECM (jumped the ODBII pins so the Immobilizer will recognize the ECU) Now I am getting a P code for coil C I wasn't going to bother posting this to a Scion forum once I saw your knowledge on how this stuff works I figured my best bet is to ask you. I know this is a needle in a hay stack type problem so if there's no advice I get it. but any input would greatly be appreciated. At this point i ordered coils online and a Crank Sensor I am getting a tach signal so prolly isnt the CrankPS. I'm assuming the ECM took damage and maybe damaged the coils but I have no idea. Thank you for read

[@thebaldmechanichardatheari1124]

Good explanation!!!

[@VoltageDropDiagnostics]

Thanks for watching!

[@DylanRabier]

Thanks for making this video PJ. Well explained. Just wanted to ask, so on the IGF signal it's normal to be a shorter pulse (in time) than the IGT as shown on the scope.

[@VoltageDropDiagnostics]

Yup. From the ones that i look at, it’s usually 1/2-1/4 the length of the IGT. But I’m not sure if the computer looks for the duration. It could. But I’m not sure if it does.

[@Waelkhalafabdelrehiem]

Thanks for sharing

[@VoltageDropDiagnostics]

No, thanks for taking the time to watch!

[@arvindracing]

Can you please explain where does the crank and cam sensors come in to get the coils to fire

[@michaelcordero5588]

I want a drawing of 12 cylinders next!!!

[@VoltageDropDiagnostics]

I'll be needing a bigger white board for that! haha

[@nathanrice1796]

Good video. Does its information apply to my 2007 Tacoma? Anybody know where I can get a wiring diagram for it? My HAYNES manual isn't much help.

[@VoltageDropDiagnostics]

Yup, same info applies to your 2007

[@MMAunderbelly]

how did you find out which wire to put your amp clamp on? Does TIS tell you the location of the connector and wire inside the fusebox?

[@VoltageDropDiagnostics]

TIS doesn’t tell you directly which wire to go on. But i knew that it had to be on the power feed or the ground. And i knew that the wires left the fuse block and went to the engine from those connectors. So i looked on TIS to find which connector in the fuse block fed power to the ignition coils. Probably 75% of our newer cars have a wire easily accessible from the fuse block.

[@williamdrosos7103]

Question, how does the coil make the igf curcuit switch to ground?

[@VoltageDropDiagnostics]

It actually uses a transistor inside of the coil. I'm not sure if the coil sees low voltage on the ground side of the primary circuit and turns the IGF transistor on. Or if the coil sees current flowing through the primary windings and turns the IGF transistor on. But I know 100% that is uses a transistor.

[@jasonc.4683]

Thank u PJ. That's awesome 😁

[@VoltageDropDiagnostics]

Thanks for watching! I can't wait for the next Staten Island meet up!

[@jasonc.4683]

@@VoltageDropDiagnostics I wanted to shoot down there by you for the Brandon class ya put together at the the toyota dealer, but it sold out quick.☹. Are u going to the big TST training? It just bothers me that's it's like 800 people or more in one big room. Wish it was more like super Saturday ☹

[@VoltageDropDiagnostics]

Jason C. I’m not sure about TST. But I may have some big news about Brandon coming to Pittsburgh soon!

[@jasonc.4683]

@@VoltageDropDiagnostics Can't wait for the announcement. Take care my friend. 😎

[@VoltageDropDiagnostics]

Jason C. May 30th here in Pittsburgh at Rosedale technical institute. Paul Danner is helping host Brandon Steckler here.

[@billrimmer5596]

Super job. We will have that for future reference. Thank u!!

[@VoltageDropDiagnostics]

Thanks Bill! I am glad to help!

[@chekelley6861]

So i take it you can’t analyze the IGF signal other than if it’s present or absent? For example, the height or duration?

[@VoltageDropDiagnostics]

For the most part, I just make sure that they're present. But I also watch and see how well the coil can pull the circuit to ground.

[@jimmymakwega3872]

Do the IGF needs to be pulled down to the ground?, what if it is not pulled all the way, like 0.4 to the ground is that ok?

[@VoltageDropDiagnostics]

No. It doesn’t get pulled all the way to ground.

[@richardcranium5839]

i seen that bad information and i can say its not the first time and i doubt it will be the last. thanks for giving us the strait poop on these 4 wire toyota coils.

[@VoltageDropDiagnostics]

Thanks! It is the least I could do!

[@Khadarmali]

I like to see toyota probox ignition system operation and it's engine 2nz-fe

[@angsdoordecorandmore9132]

🏎🖤❤️

[@smms5056]

👍👍🤙🤙💪💪🙏🙏 Awesome Thanks

[@VoltageDropDiagnostics]

My pleasure!!

[@mohanedmohamedahmed9603]

if IGT circuit work IGF work to they connect together , is stupid engineer that computer want know if circuit work properly base one information from IGF CIRCUIT