How to Use Wiring Diagrams For Car Electrical Diagnosis and Repair

[@automedicine]

I have never regretted subscribing to this channel. The amount of education I get here is like going to Auto university.

[@BrucifyMe]

And he's just giving it to us for free. What a legend.

[@cardo1111]

Indeed. AMD is a talented technician and a good teacher.

[@stevejette2329]

So where can a person GET these individual, simplified diagrams ?

[@HafizIbrahim-j8t]

Actually your presentation and method in force every body looks for the best toturial can flow you

[@stevejette2329]

@@HafizIbrahim-j8t Ya. What he said.

[@gregwarren8583]

As a Retired Auto Tech & Community College Instructor (57 years experience with ASE Master & L1) I love your descriptions & testing logic, exactly as I taught my students to do. It might be a good idea to compare diagrams for various manufacturers so people can see the minor differences. Keep up the great work! Many people do not know how to properly use electrical test equipment, especially for parasitic drain and loading circuits for voltage drop testing. It would be good to do a series based on these points. Again, keep up the great videos you provide. I have watched many of your videos and love what I see. Greg Warren

[@abes7181]

Why are components given ground in a car? In a house like a light switch it's given power so it's not constantly hot. So car components are constantly hot? Am I mistaken?

[@gregwarren8583]

@@abes7181 Abe, We use DC except internally in a Generator (usually called an alternator) tis device produced 3 phase AC which then goes through a rectifier to produce a pulsed DC output to the battery. Automotive circuits are usually Hot or Ground side switched. Ground is used as a return path for todays' Negative Ground systems. A switch may be constantly powered from the battery (ground side switcing), or switched power to a component (hot side switching). Let me know if you have any other questions.

[@shanechostetler9997]

You are amazing in the content! Just like going back to vocational school!

[@learningwithjuan]

Car Nut I do agree with Greg suggestion. I would highly enjoy those type of content. If it’s possible for you of course. God Bless you guys.

[@dougmacqueen1679]

​@@abes7181Abe the use of the term "ground" in automotive electronics is a bit misleading. As you are likely aware that rubber tires are good insulators so nothing is actually going to the ground. As a circuit must be complete for current to flow, the metal frame of the car is the ground but most importantly is the metal frame is directly wired to the negative post on the battery completing the circuit. So when you hear "ground" just think negative to the battery.

[@mikekellokoski9745]

Every video you make shows how much thought, care and quality you put into your work. You're a godsend to the automotive community!

[@wyan008]

As a former automotive technician now a "Car Care Nut," your KZbin video demonstrates your generosity in sharing your knowledge, experience and well earned wisdom. It is nice to update myself with your videos. Lifelong Toyota & Lexus owner. Wishes for a healthy and prosperous New Year. May the Lord Bless and Keep You!

[@mmix224]

Your explanation of your methodology is incredibly helpful. When coupled with what's being taught, this is one of the best uses of 30 minutes you could possibly invest in. Thank you!

[@mrwhite2628]

I can't believe that I just sat here and watched a video of something I've known for 30+ years. This guy is a great instructor! Keep up the good work!

[@yunieskerjoseespinosamarre1174]

I have all of your videos saved 😉 I can tell you, I (who didn't know anything about cars a year ago) have been giving advices to the Mechanic Master I work with part time, by just passing your knowledge. You are a Saint my very good Professor. May God bless you and your family, and keep you all safe 🙏

[@elijahtolentino_]

Thank you for the prayer at the end really meant a lot. Came in watching this video discouraged because I’m so frustrated at my dealership training and how I need to pass this electrical and hands on part of this test. But after your quick prayer you have encouraged me to pass for the Lord. Thank you God bless ❤️

[@peteadolay5299]

You are the best. My daughter is an engineering major at Purdue university and is currently taking 300 level electrical current class. I sent her these videos and she said they were helpful. Thanks 😊

[@BlueCrab251]

You're by far the best teacher for automotive electrical! I have struggled for years understanding wiring diagrams and firing the parts cannon at my cars. I replaced an entire ABS computer and pump when I tested the relay and though it was good. Come to find out, it wasn't; only because I tried every other part. It was one simple plug and play part that I somehow tested incorrectly, resulting in spending lots of time and money installing other parts. Thank you for all these videos and all you give back to us in the car community.

[@majdkurd5456]

Your English is very clear and beautiful

[@nkiaoda1025]

Electrical was always a struggle for me when I was an auto tech. I am really excited to watch these instructional videos of yours. Thank you so much!!

[@jonathansanchez10]

My favorite mechanics KZbin channel!

[@stephenshaw9131]

Well presented! When the house is paid for/ kids through college etc.consider a teaching or management position. You have expertise and are well spoken. Our bodies don't last forever as a tech. I got the opportunity to go into supervision in a fleet shop and it turned out to be a real blessing.

[@tolitze6521]

I'm just a DIY. So grateful that I found this channel. Thank you for these lessons.

[@tupublicoful]

Great video. My suggestion is you cover a how-to use tools to verify voltage (power), ground, continuity and relays as you diagnose the issue. (with multimeter, quick pin sensors, manual switched relays)

[@ttrueplaya]

Join this suggestion

[@barrygalerno700]

I have worked on vehicles for over 60 years. Your explainations are the BEST. Thank you for sharing your knowlege. Wishing you health and prosperity from Canada.

[@expykanmuri]

Main thing my instructor always said when diagnosing electrical issues, "don't come to me without an EWD". So I either learned his way or I learned Toyota's (through T-Ten) way of diagnosing electrical issues. It has helped me greatly.

[@pecan11]

I bet you will be highly wanted as a mechanic when word gets around about your channel. As a woman I am highly suspicious of a lot of mechanics bec of their lying to me. I usually have tried to diagnose the problem prior to bringing it in including reading codes and doing research. Thank you for being honest about your interpretations! We desperately need mechanics like you!

[@supersabrosinho]

Most competent mechanics are like this or better

[@petemurway3037]

You have opened up a new view to what I learned 45 years ago on farm equipment! Cars have gotten way more tec! I really want to thank you for your knowledge and teaching us all!

[@aamiryousuf90]

I am an Electronics engineer and I am glued to this series as I am learning a lot in comprehension of automotive electricals. I can only imagine how much everybody is benefitting from this masterpiece of a series. Thanks AMD for this amazing series.

[@rassiekotze5183]

I am a master Technician at Toyota. Although i have been off the bench since 2014, i have sent all my apprentices to this channel. Very good explanation and very easy to follow. Wish you all the best sir! May you and your business grow from strength to strength.

[@QuantumMercury]

These videos may not get as many views as some other videos, but they are actually some of the most meaningful videos you can put out. It's good to see you care about the quality of the content you put out and not just try to throw out what will get the most views all the time.

[@waynejh]

Excellent video! You bridge the gap between basic knowledge of electrical circuits and making sense of wiring diagrams. Also great is the logic of what to check first, second and so on to avoid chasing your tail. Seeing a circuit clearly from start to finish is vital in correctly solving the problem without throwing parts, time and energy in all directions. Thank you for explaining things so clearly.

[@-carrepair4141]

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[@Yulian.Mladenov]

I'm a car mechanic and i never think that actually the relay is a way to turn off and on something which consum lot of current with not strong switch. Thanks a million! Continue like that,the videos are great.

[@Iforgot___________-________75]

I just wanted to say, you are an excellent instructor. I learned more from your videos in 1 hour than a lot of time with other methods. I hope you make a milli on this work because you deserve it. Thank you!

[@kickerpunter8414]

I have to say, this video reached me in a way other videos, manuals, books, etc. hasn't. Instead of trying to memorize or work troubleshooting charts, understanding exactly what's going on, the purpose & components of the circuit, my logic/thinking was taking over & by the middle to end of the video I was saying it just before you did. That felt good. Thank you. Subscribed

[@jimbergen5232]

Coffee and Toast while watching CCN Part 2 - the day is off to a great start !

[@withgrowinginsanity198]

Amazing content! Top teacher quality!

[@RandyWesley-wl1ss]

Hard reset ECM. Watching quite a few of your videos I have a better understanding what was happening to my Cadillac xt5. I thought I bought junk, (electrical issues) but you taught me how to properly diagnose to take a deep breathe and understand. My cadi simply needed to be recalibrated. After watching and listening my Cadillac drives like new! Thank you thank you thank you thank you!!!

[@joshvalera2526]

I'm a paramedic of 8 yrs and I switched careers to be a diesel/compressor mechanic also do mobile Mechanic service work and with smart experienced teachers like you I learn how to improve my diagnosing skills and my confidence 😅

[@jowls]

I regret not having to see and subscribe to this channel when i was scouting for a car. Very simple and concise explanation, worthy content.

[@DJSkiddMarks]

AS A FORMER experienced tech nition and went to asu of engineering I can say with a degree that pays $500,000 salary, this is by far the best explanation of any course you could ever get in ANY university.

[@michaelt1349]

I'm sure it will come later in the series but it would be great to actually see you use your tools to check these voltages at the various points in the starter diagram example. I'm sure you could rig up some test cases with bad wires or fuses or relays that you've collected over time and show the diagnostic thought process. Great so far!!!

[@michaelt1349]

Also, I am being greedy here but I think because of the success of your channel you could actually procure a "shop" car (maybe Corolla or Camry?)for these electronic lessons (and other repairs as well) and keep it in your facilities. You could demonstrate the diagnosis and repair process on the car and after some point in time you could sell it! You might be able to sell a high quality completed series of diagnostic assessment and repairs for certain Toyota cars or perhaps something more generic! Thanks again!

[@malcolmmarzo2461]

This channel is a model of good teaching. As a professional educator, in academics, I have spent years learning how to teach by observing how good teachers work.

[@psilva2565]

I am very I fortunate to have found a mechanic that I have been using for 20 years that embraces diagnostic culture just like AMD does. I have never had to return a car for the same problem and he is not a parts changer, fixed the first time every time.

[@mikedurling2111]

This information is gold. As a guy who likes to wrench on his own vehicles I thank you.

[@muhammedcevdedgali8238]

i have been reading diagrams for a week and not undersdanding anything till this video comes ..thank you so much sir

[@supersam1914]

Please continue this series . My favorite videos are when you troubleshooting a issue or these when your breaking down valuable theory we can use . Your the man

[@longfade]

You are a very gifted instructor, and a saint for sharing this knowledge!

[@gregjones382]

Just learning. I've got electrical problems with a truck I've been working on for over 2 years. Very excited. Thank you.

[@ThanosNokas]

This is an amazing series. I understand that not everyone interested in cars will have the time or the will to watch it. For this reason I assume that it will not have the same engagement as your other videos. Nevertheless, the value is immense. Please know that they are great and helpful to most of us, even if the numbers don't reflect that. To sum up: Please continue!

[@danmadden1080]

Many thanks - from New Zealand.

[@georgebanman2258]

May the Lord Bless you and keep you too! Wow - I loved this video so much. My son and I are attempting to install a car starter on a 2007 Toyota Yaris (Manual Transmission) and am starting by doing lots of research and planning. Learning to read Toyota Wiring diagrams is part of this and you explained it sooooo well. A million thank yous!

[@gaiagaiagaiagaiagaia]

My friend. This is the greatest tutorial series on KZbin. Thank you.

[@Palmer225]

I’ve learned more from your channel than I ever could have imagined. Solid, practical, and well communicated information each and every time! Thank you!

[@rightlanehog3151]

AMD, You are keeping us on our toes with a Monday video. 😉

[@Z14kt12timandjes1]

You are an excellent teacher. Thanks also for saying may the Lord bless you and keep you.

[@martinlugus7242]

You not only know a lot of things, you are also a great teacher. Very impressive.

[@brianbunch3577]

I am a shop owner but not a technician. Your electrical diagnosis videos are very informative and I share with our team. I can’t wait to see more content on electrical diag!

[@SM-bt4by]

Amd you are a really good teacher and you make great videos, I always watch your new videos. Greetings from Sweden!

[@mikecont9742]

I really appreciated the two electrical videos you took the time to make. All of your videos are very informative. You have a great channel.

[@fknbastages]

I was excited for this episode. I wasn't disappointed. 🙂

[@blackace1295]

By FAR the best video explanation of wiring diagnosis I've ever seen and I've seen more than a few in my DIY journey. Thank you so much for doing this video.

[@bartonhannah8977]

This video was very helpful and I thank you so much for the amount of knowledge that you just gave me. May God bless and protect you young man.

[@lucidbarrier]

@19:39 Straight from the battery @24:20 Switch diagnosis to supply side - This is an excellent video, one of the best I've ever seen explaining relays. I've often wondered why mechanics say control side and supply side in videos (Like Eric from SMA Auto). I think I've been intuitively diagnosing things as a DIY logically like this but it's nice to have a firm grasp on how to approach and test correctly. I'm looking forward to the relay video. The starter talk also makes a ton of sense now.

[@josevelazquez6222]

I want say thank you for this simple and clear explanation of electricity wire diagram ,we appreciate your time and dedication thank you so much again.

[@mikewaters6980]

You're a great teacher- a natural.

[@Hiterally_Litler]

I love this channel. I just found it. If I'd seen this 30 years ago I would've become a mechanic. I had no idea how interesting mechanical things are.

[@abuidnsampala]

This is certainly the best channel I have ever subscribed to this year!!!!! Man you are a good teacher!

[@infinite540]

What a great explanation and teacher. Never stop teaching.

[@Dorjee-q6c]

Thank you for the video. I did my first electrical diagonosis a few days ago and this video reinforces what i did with that diag and much more. I learnt a lot . once again keep up the good work!

[@chriscrystalhood6260]

Hands down best video on this subject, thanks a lot for your dedication and time to share this with others, so helpful. May God bless you!

[@jasperrodrigues7026]

May the Lord bless and keep you and your loved ones as well! Thank you so much for sharing your expertise and wisdom, I can only imagine how much time and effort you've dedicated to learning it all. You've helped me learn so much :) -Jasper

[@gmoac]

The wisest video i saw! Great! Im confident i can solve my problem from my Caravan '95. In Argentina nobody want to help me, is an old car with just 110k kms. THANKS!

[@bracsim]

Glad to find this channel, no one explain it as good as this guy does, subscribed.

[@carmonaaa5782]

Thanks for the videos I'm excited about these technical videos!! Electrical theory and diagnosis had been my weak point and super happy to see Toyota specific training/theory videos from a Toytota master tech online. I'm a Lexus tech currently working on becoming ASE/Lexus master certified

[@KiwiPokerPlayer]

I'm excited for them too, I'm not a professional mechanic, I just own a '93 Toyota Surf (manual transmission diesel version of a 4Runner for our friends in the US)... his explanation of what a relay does was the best one I've seen in terms of clarity and simplicity. Can't wait for more.

[@DylanL69]

Electrical is one of my strong points you have to understand it to diagnose 90% or more on modern cars like sensors or computers that's the majority of the work

[@KiwiPokerPlayer]

@@DylanL69 I've been considering a career change. Will current auto electricians make the change to electric fairly seamlessly in your opinion? (Is it going to still be a "job" 20 years from now).

[@DylanL69]

@@KiwiPokerPlayer no would have to go through more training to understand the electric cars but yes there would still be a job 20 years from now but I don't think we will be going full electric anytime soon even though governments are pushing hard for electrification the gas engine can still get more efficient so I personally think learning the mechanical engine and vehicle will still be around for awhile

[@abes7181]

@@DylanL69 Why are components in a car being given ground instead of being given power? Isn't that the opposite of how it is in a house? Like a light switch in a house always has ground(neutral) or return path and is given power(hot) to function or else if you get a short you could get shocked because the switch is always hot. So that means most car components are always hot?

[@diolorenzo1727]

Taking advance electrical class and this will be very helpful!! Thank you sir! 😊😎

[@MarzNet256]

Wow. I can't believe how much I learned just from this single video.

[@yiranjack]

Hi AMD. This video reminds me the trade school days 6 years ago when I was in Montreal. A lot of good memories with all my teachers. Very educational , much appreciated.

[@CoreMaster111]

I worked on my Cadillac and wiring diagrams were very simple and understandable. Every single possible variation had it's own deticated diagram. Book is also about a million pages long. My friends VW T4 bus, well you have one diagram that has 10 different variations based on trim level and year of production in a single diagram. Good luck figuring out what is what.

[@rahulv4865]

I am in awe. thank You so much for explaining such complicated wiring diagrams and making them look so easy.

[@lancemcnab289]

This is so helpful for us DIYers, thank you for taking the time to share your knowledge!!

[@cnsrvtv7666]

Wealth of info. I will be referring back to the alphanumeric symbols. Thnx for placing this series out. May the Lord continues to bless you in what you do so well.

[@momodoungum625]

I have never understood relays until I subscribed to your channel. Your explanations are pedagogic, logical and practical. I will live in this channel for ever!

[@MrXerxes415]

Absolutely The highest training on KZbin he should have been an art school graduate as well his drawings are lovely

[@herbertsjeffrey]

No better way have I spent my time today. So enlightening. Good channel. A veritable tool/medium to upskill as an auto-engineer. Thank You. God bless

[@diegocervantes9146]

Hands down best teacher, I failed my brakes are because I didn’t know how a electrical diagram worked

[@guloguloguy]

THANK YOU!!, "TCCN", FOR GOING THRU SOME OF THESE VERY HELPFUL INSIGHTS, AS TO HOW TO INTERPRET SOME OF THOSE "TINY" DETAILS, ON TYPICAL AUTOMOTIVE ELECTRICAL DRAWINGS! I AM NOT/(WASN'T) WELL UP TO SPEED, ON MANY OF THOSE "SPECIAL" CODES, ABBREVIATIONS, STANDARD NOTATIONS", ETC. YOU HELPED, A LOT, IN BEGINNING TO UNDERSTAND SOME OF THESE COMPLEX NOTATIONS, AND, I THINK THAT I'LL HAVE BETTER SUCCESS, WHEN I NEED TO FIND THE "TROUBLE", AND, POSSIBLE WAYS AROUND IT! IMHO: THE MOST DIFFICULT, AND AGGRAVATING STEP, WAS TO JUST FIND THE NEEDED SCHEMATICS/WIRING DIAGRAMS!!!! I HAD TO SPECIAL ORDER A BOOK, WITH OVER 300 PAGES OF INFO, ON THE PARTICULAR CAR MODEL,(2008 SCION XD)... IT WASN'T EASY TO LOCATE THAT!!! AND, THIS BOOK, COULD'VE BEEN MADE MUCH EASIER TO INTERPRET!... I ONLY HOPE THAT THE ENGINEERS WHO DESIGN THESE COMPLEX SYSTEMS, MAY ALL, SOMEDAY, HAVE TO GO THRU THIS PROCESS, THEMSELVES!!! ...MAY GOD BLESS EVERY ONE OF THEM!!! 💥

[@Fred-F4]

The best car channel ever!!!! Thank you Sir!❤

[@chriswilliams6613]

Just watched the two electrical fault videos. Gutted this was only a two part thing 😢. Great explanations l.

[@Az-hn7xi]

I always wondered about the electrical circuit in cars and how they work. your an amazing teacher

[@OneLeapCloser]

Incredible job, AMD! A must seen video for everyone who owns a car!

[@matta5194]

Another fantastic video! Best channel on KZbin! Thank you again

[@abumjuamoses4575]

Thank You for the lectures.

[@Cmunene]

Amazing explanations. The education here is priceless. Thanks from Kenya

[@qa7103]

Shrodingers box, ETCG and AMD, followed by Chrisfix, that's all a DIY car guy needs

[@ramocan02]

Wow! If I could give more likes, I would. Very informative video for newbies, clearly explains the troublewhooting logic.

[@pauljennings4248]

Thank you for the wonderful training. It is helping me to understand electrical troubleshooting. I have a 1981 car and the wiring diagram is so small I am having trouble reading it. I wish mine was as good as yours. Thanks again.

[@plandl1]

Side story about starters: I was about 22 and driving down the highway and the sticks hit felt warm and smoke was coming from under the car in through the stickshift boot. It was '69 Cortina. I went to change gears and the the whole sticks hit pulled out of the transmission and smoke poured in!! I put it back into the transmission and made it to my destination. BTW, the plastic bushing that sealed the sticks hit in had melted. My brother said he'd follow me home that evening, when on the way he flagged me down and said there were sparks and flames dropping from my poor little car. I pulled off the interstate jumped the curb into a parking spot, I pulled the hood and he immediately pulled one of the terminals from my battery. Both battery cables were burned bare since my starter bolts loosed from an oil leak and caused the positive terminal on the starter to ground out. To this day I count my blessings as we could have had a complete car fire! I got $25 for it at the junkyard. Point is, I know how powerful the starter cables can be.

[@DANNYN224]

Great video electronics is important if you can't read diagrams you can't fix the vehicle or troubleshoot it wiring diagrams is like a map usually you start from the top and read all the way to the bottom most diagrams have a 12v source on top of the diagram

[@roderickzappareynolds2316]

A very thorough and detailed explanation. Excellent work!

[@raycollington4310]

You got me in trouble today. I booked my UK spec 2022 RAV4 into a Toyota main dealer. I asked for genuine Toyota 0W-16 engine oil to be used. I was told we only use 0W-20. The service receptionist now thinks I'm either a nutcase or have OCD. Imagine me telling a UK Toyota main dealer to watch your channel. I struggle to see how Toyota UK can accept this issue. I'm only trying to follow the user manual recommendation. This is my first Toyota and from today's experience I might have to reconsider going back to Broke-My-Wallet. Sorry this is off-topic. Love these teachings. UK dealers could use some of this material 😂

[@MoeNegm]

Oh my God just had the illest epiphany moment as you explained how relay work. Wow! Excellent job!

[@frundlemud]

You have a gift for teaching and I feel your enthusiasm. Very helpful.

[@Robb4d]

first vid ive seen of yours 2 mins in and i can tell ill be watching more concise presentation good stuff!

[@fks-pv8il]

I am so happy I found your channel. You’re awesome!

[@TheHansoost]

This is truly excellent material. Your explanations are clear and concise.

[@Jorgituzz]

Maybe you should go ahead and release a book like scannerdanner did. I love your teaching skills. Besides getting educated, your eloquence is releasing dopamine to my nerve cells. (That’s a compliment)

[@MA-bx2ev]

Looking forward to the part 3 of these series. All the best!