CARDONE PROTECH #3: Kirschoff's Law And The ONE Electrical Diagnostic Technique You MUST Master

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#cardone #motorage #automotiverepair #electronics #ecm #pcm #ohmslaw #voltage #resistance #current #amps #ohms #voltagedrop #testingelectricalcircuits
Last time on PROTECH, I showed you how voltage, resistance, and current interact. We learned that when resistance in the circuit increases, current in the circuit decreases - and the component operated by the circuit won’t function as it should if it functions at all!
I also told you that most electrical faults you face are caused by these changes in resistance and shared a few examples.
Today, I’m going to tell you how to find those faults.
Motor Age has partnered with CARDONE to offer a new series of training videos, starting with electrical troubleshooting. Be sure to subscribe and tag that bell to be notified when the next video is available!
In the meantime, be sure to visit our partner at www.CARDONE.com!
Got questions? Email Pete at pmeier@endeavorb2b.com!
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Due to factors beyond the control of Endeavor Business Media, it cannot guarantee against unauthorized modifications of this information or improper use of this information. Endeavor Business Media assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Endeavor Business Media 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 Endeavor Business Media, 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 Endeavor Business Media.
The tool and/or equipment featured in this video was supplied by the manufacturer and may or may not be retained by the reviewer at no cost.

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3 окт 2024

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Комментарии : 130

@cthncthn7405 5 месяцев назад

You, my good sir, are the gold standard for teaching this subject. Can’t thank you enough.

@petar443 2 года назад

And don't forget folks. this test only works when the circuit is On. And current is flowing. Otherwise the readings will be different!

@MidLifeFelon Год назад

I’m it’s pretty obvious if you’re testing voltage drop you have to have voltage…..

@robertbyrd5676 Год назад

I've looked so hard for someone that could explain things in a way I could understand. I really appreciate you. You have the heart of a teacher!

@RedEyedJedi Год назад

This man is a total legend. He has helped me so much in my quest of becoming a vehicle technician.

@MotorAgeMagazine Год назад

Thank you for those kind words. They are much appreciated.

@SKWDMDYT 2 года назад

So glad I found your channel. You are a fantastic teacher, very articulate, and obviously a very smart guy who is obviously well rounded in many subjects.

@1b9e7n3z Год назад

Amazing electricity class, nobody here talks about Kirchhoff, they still stay with Ohm, thank you and take good care of yourself

@redvision350 6 месяцев назад

Pete thanks again for another excellent video. These videos have helped make me a better diagnostician.

@garywebb9818 2 года назад

I encourage everyone to watch your video Taking The Mystery out of Voltage Drop Testing a great video. This video "is not" your best work. I've relearned and learned a lot from your video's. Pete you're still the best, keep them coming.

@marinecpl.4564 Год назад

Pete, you're a great Teacher. You break everything down and make it very easy to understand. I have learned a lot from watching your Video's and look forward to learning more. Thank you for taking time to teach others.

@MotorAgeMagazine Год назад

I appreciate that. Glad you find these helpful!

@JoesAutoElectric 2 года назад

Very nice demo. reminds me of the old days training at MEA. I truly hope you get this across to a lot of guys in the field. This is something that is seriously lacking in practice these days. God bless man. Great video!

@MotorAgeMagazine 2 года назад

Thank you very much!

@ThunderbirdRocket 2 года назад

Hi Joe . Just wanted to let you know that I appreciate your contributions to the trade / our development .

@JoesAutoElectric 2 года назад

@@ThunderbirdRocket much appreciated sir.

@billsmith2212 2 года назад

Joe , I hope you are doing well .

@mikecrawford5331 Год назад

Excellent explanation! Thank you for taking the time to share this

@ekimbrough1413 6 месяцев назад

WoW Pete I really loved your video! It was simple and easy to understand Kirchoff applied to troubleshooting circuit!😁

@glenforehand 4 месяца назад

What a great teacher!

@grahamadams9084 2 года назад

A Rock Star in the Auto Electrical world... Thanks again Sir

@MotorAgeMagazine 2 года назад

Wow! Thanks!

@leoramirez7811 Год назад

Old mechanic n Electrician I had trouble shoot many electrical problems on cars n found n fixed but I never tried or thought to find resistance the way you described it is great on burnout components but with all this new electronics modules it’s hard to find even with all this new fancy n expensive diagnostic testers with thousand of information I do get lost.😢

@duncancremin1708 Год назад

Yes, that’s a good way to explain it, to folk that normally deal with mechanical issues. As an electronic tech, it feels wrong to me, because we were trained to make all volt measurements with respect to ground. In reality, if you understand ohms law and you can do simple subtraction, then the technique is actually the same, but definitely easier to understand, for the untrained, this way. I’m going to adopt this method, when asking people to do things for me, remotely. It’s much more likely they’ll do it right, if they understand why they’re doing it, and I can easily convert their readings back to what I’d get, doing it the conventional way, if I was on site. Nice tip, thank you.

@yachtsteve 2 года назад

Best electrical troubleshooting course EVER

@thinkingsmarter3506 Год назад

I would give you 2 likes for this one if I could. Great explanation.

@DJ-tn7vj 2 года назад

Thanks Mr Pete for the constant reminder and training

@ParabellumX Год назад

At 17:48 was when you may have inadvertently confused a lot of viewers. You were testing the theory of whether or not you were 'truly on the ground side' with both leads. You then revealed another load (i.e., a second lightbulb) that you had hidden behind the test board. In a real world application, there normally wouldn't be two or more loads in a circuit. That, of course, would cause a voltage drop - your primary topic of discussion here. You then left the video open-ended by not explaining to the viewers how you were actually able to obtain a measurable amount of voltage on a multimeter, even though it appeared as though you had both of your leads on the ground side. Aside from that, this was a great instructional video. It was very informative and well-explained. I am a fairly new subscriber of your channel. I enjoy watching your videos; they are very educational. To the viewers that didn't understand what he was demonstrating towards the end: When it comes to detecting voltage in a circuit, it ultimately doesn't matter what 'side' of the circuit you have your leads on; a voltage reading on a multimeter works by measuring the POTENTIAL DIFFERENCE between what is on the outside of your leads, and what is on the inside (between your two leads). Simply put, voltage is PRESSURE. "What is the DIFFERENCE in the voltage between the outside and the inside of my leads, ANYWHERE in the circuit?..."

@glenforehand 4 месяца назад

The hidden bulb was demonstrating a fault in the circuit which is discoverable as a load or resistance. An example might be corrosion in a connector. He is demonstrating an incredibly useful procedure for finding faults in an automotive circuit.

@poka703 10 месяцев назад

Thank you sir. If i had the same techear like you , i would have saved a lot of time. Sorry for my English if i missspelled.

@ThunderbirdRocket 2 года назад

Thanks for your dedication to provide this online classroom / tutorial . Your passion is evident in everything you do . Much appreciation sir . If you don’t mind I’d like to call you Coach because we are taking a lesson from the best !

@MotorAgeMagazine 2 года назад

Thanks! Appreciate the kind words!

@romanjaspe4172 2 месяца назад

So well explained!. Thanks so much 👍👊

@laserdad Год назад

Excellent presentation. I love your sense of humor.

@sonyyoung1036 9 месяцев назад

Absolute best video that visually shows what and how to understand/identify voltage drop in a circuit. Thank you!

@luismartinez1824 2 года назад

Great instructional video, demonstrating it on your board helped visualize the proper procedure in performing a voltage drop test. Thanks again.

@justwelltariang2456 2 года назад

Thanks you so nuch Sir for the knowledge you have shared. It has immensely benefitted me. Take care Sir and knows that through your efforts we are blessed. 🙏

@jt93308 Год назад

Mirroring what everyone else has said - this is a great video, very clear. Thank you!

@andrewmccaskill2845 2 года назад

Reminder for anyone using this technique. I have seen switches with an L.E.D. that were designed with significant resistance. so be sure to keep that in mind other wise you might spend hours just to find a properly functioning switch.

@RoyMay24 Год назад

Love the videos, I work in the automotive industry at a major OEM. It's very rare I get hands on, great to watch these videos as a reminder

@coycarlson4979 Год назад

Excellent instruction Pete - electrical testing indeed takes practice to fully grasp and lock in understanding. I took some electronic schooling years ago - studied theory in the books - BUT - still when doing lab testing - as you teach with your demonstration circuit would find out that to read about electrical principles and actually apply that knowledge in a real world situations / problems IS NOT AS EASY AS ONE WOULD THINK - PROPERLY TROUBLESHOOTING and DIAGNOSING takes practice and time ( experience ) before one really understands what is actually occurring. Many Thanks 🙂✌️

@sooriyanades4339 2 года назад

Hi mr Pete!Really appreciate for your time and sharing knowledge with us.👏

@benignoalvarado8246 11 месяцев назад

Excelente lesson

@dunnkruger8825 Год назад

Brilliant display, illustrations and lessons Thanks

@johnnyblue4799 2 года назад

Nicely explained. Together with the electrical diagrams of the vehicle it should make fault finding quite easy, most of the time.

@gregscheyd4131 Год назад

THANKS AGAIN PETE : I APPRECIATE YOU !!!

@wjs1820 Год назад

Thanks Pete. You are an awesome teacher. Love your videos.

@roundcornerent 11 месяцев назад

This was great lesson 😊

@mansouralblooshi3004 Год назад

Thanks Pete. You are awesome 👌

@frankschwebel8605 Год назад

Love all your tutorials . Cant understand most of it .....But working on it !!!!!

@patfromamboy Год назад

I didn’t remember what Kirchoff’s law was but I know you misspelled it. Great video!

@nickayivor8432 2 года назад

What do you call INTELLECTUAL AND PRODIGY and SUBSTANTIAL add one more KNOWLEDGEABLE the answer is Sir Pete Meier Motor Age My teacher ,thank you very much helpful video ,take care and have a great day Sir Pete Meier Motor Age From Nick Ayivor from London England UK 🇬🇧

@clueless6559 2 года назад

NICk AYIVOR , Sir Pete will be coming to London England UK next week to see you , so don't be out will you, 😅😅😅

@LeverPhile Год назад

Great explanation ... this is starting to make sense.

@mr.technician2638 Год назад

Thank you very much sir for not being tired of teaching,,especially this video,although very basic but no doubt it can be overlook to do so....thank you so much sir I always eager to watch your videos, I gain more knowledge from you god bless you always and have a good health always...😊

@weedpuller2000 2 года назад

Thank you for explaining it in a very understandable way. What are the most common forms of resistance encountered?

@MotorAgeMagazine 2 года назад

In my experience, it is usually on the ground side - corrosion, damaged connector fit, loose connections.

@johnnyblue4799 2 года назад

I think #1 would be bad grounds. Then the "green crusties" aka oxidized contacts!

@aznative_ 2 года назад

Thanks for making me feel dumb. Seeing it done it makes all the sense in the world why and how you can test the voltage on the negative or positive side exclusively. But I never knew you could. Thanks teach 👍

@lonniemcwalters2002 Год назад

Awesome I loved when you pulled the light bulb out great example

@davidostring1289 Год назад

Thank you for posting this video. It really helps a lot! Keep up the good work.

@mikewho9964 Год назад

Good explanation ! - thanks

@MotorAgeMagazine Год назад

Thanks for watching!

@fredweber761 Год назад

Thanks for sharing Pete! Useful stuff.

@MotorAgeMagazine Год назад

Glad it was helpful!

@MsRa3d Год назад

awesome, great channel I'm in. thanks

@martinboucaud679 2 года назад

Great job

@moodberry Год назад

I am really enjoying learning from you. This system works fine if the resistance is the same between a hot car and a cold one. But what if the circuit you are testing for is one thing when cold and another when hot? Of course, the reason for the resistance I think would be that as the engine warms up, some components (or grounds) would change their resistance, right?

@MotorAgeMagazine Год назад

Resistance shouldn't change with few exceptions. A light bulb, for example, or the mechanical resistance a motor of any kind endures under load. In all cases, the measured voltage drop should remain constant. Trust the meter.

@noiprocsZ Год назад

temperature has influence on resistance, higher temperature increases resistance

@paradoxdea Год назад

Thanks for all your knowledge and teachings.

@mystic24100 Год назад

Great video, wish that I could have understood this when I started as a mechanic in 1964. Of course back in 1964 Meters were not small and affordable as they are today. Of course the shop were you worked had one on a stand that could be rolled over to the vehicle you were working on.

@thisismyuniquestory Год назад

@mystic24100 . Kirschoff's Law was taught to me at my UK Technical School in 1960. A very forward thinking British civil servant, Beveridge, drew up the 1944 Education Act planning for eventual peace after war. Sadly successive UK governments don't have vision to teach science which included building construction, metalworking and woodworking 38 weeks a school year. Abandoned in 1964, such a backwards step compared to the rest of the world. 1963, my first job after school, working as an industrial electrical apprentice in a very scientific and progressive tannery producing gloving leather. Progressive inasmuch gloves made with Pittards leather were washable. During my five year apprenticeship the company built and opened the most modern tannery in the world. My belief, as the maintenance and development workshop was combined in one building. An area that contained the boiler house, steam boilers dealing with the massive demand for hot water and steam for manufacturing processes. Plus a steam engine driving an alternator in parallel with the UK national grid. In 1946 being the first UK company to be licensed to generate in parallel with the grid. I was in the same position as you with very limited instrumentation when the electrical workshop was performing a great deal of development work integrating and designing electronic controls before other electrical companies knew of the requirements. The lack of science was sharing one Avo Model 7 (from memory) multimeter between six electricians and two apprentices. Working on two factory sites originally with 300 manual worker's many individual using leather processing machines with an average motor size of 5 HP, some much bigger. The firm had an enormous R&D budget but a single multimeter which if it was damaged there was no backup with a second multimeter. A five digit multimeter for the price of £20, an R&D quality for £130 at today's prices looking back the options of 80 year's ago.

@anonymousanonymous-tw3wm Год назад

I really appreciate this guy !

@Lada_Niva Год назад

Very good!!! Thank you very much!!!

@tituslatchmansingh4706 7 месяцев назад

great teacher

@V_Vladimir_V 2 года назад

Очень наглядно, видно понимает и старался человек)

@sheerwillsurvival2064 2 года назад

Great video 👍🏻

@ThomasMoore.1 Год назад

Fantastic Video. Great teacher. Thanks

@reshanburayeh7564 Месяц назад

Thanks a lot, I really don’t know much about elect and my question might show that, my question is when we come to do the troubleshooting of automobile equipment what we have to measure ? Voltage or a current ?

@catfeline1530 2 года назад

You have helped me understand so much. Thank you.

@7minnow 8 месяцев назад

Awesome once Again!,,

@johnnysprocketz 10 месяцев назад

This content is so badass.

@RobertBee-fs8hv 5 месяцев назад

These new, one year old videos are much better than your early attempts at explaining voltage drop

@scottsullivan7716 Год назад

Someone PLEASE get this well-deserving man an AIR CONDITIONER for the shop!!

@seshachary5580 2 года назад

very educative. Thank you Regards

@samr.m.7709 2 года назад

Great Video Pete thank you!

@Snake.br549 Год назад

a lot of electrical problems can cause codes that are false from the alternator being bad and spiking the system with ac voltage and the battery having ac voltage to the point where it has to be replaced I had a Chrysler van set a crank sensor code and it was a bad alternator

@Snake.br549 Год назад

resistance to ground is a major problem you absolutely have to have a good ground I put extra grounds on my vehicle I ground the engine to the Frame and frame to the body engine to the body same way with the battery its grounded to the frame body and engine

@pantelis241 Год назад

Gold Bless you sir,🙏🙏🙏

@xevierred6330 Год назад

Did he have the meter on volts all the times or did he have it on ohms when he had the load off?

@raymondgarafano8604 Год назад

Also the sum of voltage drops or IR drops will = the applied voltage.

@Dennis-px3xt 2 года назад

where the hell has this guy been hiding? his teaching methods have been exactly what is misising in almost eveything i have been studying for years. do you teach guitar by any chance?

@ritchierich66 Год назад

Excellent info Thanks

@californiadreamin8423 Год назад

Awesome 😊

@fanes111 2 года назад

Muchas gracias. México!

@JohnSmith-wb6kq Год назад

6:02 Little mouths to feed, I genuinely LOL'd

@carhacks3590 2 года назад

Happy independence Day India 🇮🇳!!

@subatomicparticle6535 Год назад

Question. If all the available voltage will be consumed by all sources of resistance in a circuit as Kirchoff's law states then how can there be the current flow necessary for the circuit to function. Won't there always be some measurable voltage however low after the load close to the battery ensuring current flow. In other words if there was "0" voltage how could current keep flowing back to the battery.

@MotorAgeMagazine Год назад

Great question! Current is a measure of electron flow, not potential electrical energy. Think of the electron as a kid with a school backpack on, full of electrical energy at the start. Every time the kid passes a source of resistance, he (or she) has to give up some of that energy to get past it. By the end, the backpack is empty but the kid still made the trip all the way around. Remember, voltage is a measure of the potential between any two points in a circuit!

@meblake7359 7 месяцев назад

Why are you getting 200mv on the ground side of circuit past the thief? Shouldn't it be closer to 30mv?

@bernierao 3 месяца назад

excelent

@thembelssengwayo6896 Год назад

This method will only work when you are dealing will bulbs, alternators etc (dc_dc).....It will not work when working with car sensors that include the ecu .....The Ecu since it involves semiconductors will require a different approach......

@CameronDC-Grimes Год назад

How was there positive voltage on ground side...was it a short to ground? 7-28-2024 Update: I get it it's caused by there being other loads like a switch with high resistance that shares the voltage between everything on circuit. If there was nothing causing high resistance on ground side then it would read 0.03-0.3V on ground side since the intended load used up all of the voltage itsself.

@jdavis8610 Год назад

What would the load be on a older cruise control unit? I.e. 2007 model.

@MotorAgeMagazine Год назад

Depends on what has the problem. The control unit itself is a load, as is any actuator that it controls. Anything that does work is a load.

@racghineering 11 месяцев назад

yeah sir.. baseball. base circuit

@rocktech7144 Год назад

Uncle Kirchoff says. ......... Divide and conquer.

@UsmanGhani-zz1yt 7 месяцев назад

Geart work

@adrianvasile4683 Год назад

His name is Gustav Robert Kirchhoff (German: [ˈkɪʁçhɔf] ), not Kirschoff. See also the pronunciation. Kirsch is a brandy distilled from the fermented juice of cherries, while Kirch is church.🙂

@juergenscholl2843 2 года назад

You may want to check your spelling with the due respect to Mr. Gustav Kirchhoff. ;-).

@MotorAgeMagazine 2 года назад

Thanks for catching that! My apologies to Mr. Kirchhoff.

@jeffersonbancolita6787 2 года назад

good wire should consume less than 500 mv..

@Steve-bx2yx Год назад

@vijayakrishnannair 2 года назад

👍

@nickmalone3143 Год назад

I thought it was "kirchoffs" law with a "c" ...(ker-coughs)...

@btasler 2 года назад

Kirchoff, not Kirschoff.

@btasler 2 года назад

Pronounced "Kirkoff".

@juergenscholl2843 2 года назад

So close...yet Kirchhoff, not Kirchoff.

@btasler 2 года назад

@@juergenscholl2843 Mine was closer. Who in the hell puts two HHs in a row anyway?

@juergenscholl2843 2 года назад

@@btasler Yet so far..... Obviously the Kirchhoff family did... ;-) (and they weren't ashamed to top that with a double f as well).

@btasler 2 года назад

@@juergenscholl2843 maybe so, but there is ample proof that I didn't have to Google it first... did you?

@pootthatbak2578 Год назад

Kirchoff, Kirchoff KIRCHOFF😢 pronounced "kirk ovs" law by every great electronics teacher I ever had 70s thru the 1980s this isn't important..but the guy was pretty smart.