2010 Mazda 3 No Communication With PCM, No Start, No Crank

[@juanrodriguez-ry6yt]

folks see that book on the shelf in the end of the video i'm l1 master car and truck that book is the best money i have ever spend better than a 1/4 inch air racket

[@ScannerDanner]

thank you juan!

[@ColeTanner88]

I second that! Well worth the money, as well as the premium channel. I have no schooling, have been on the job for 5yrs, was okay at diagnostics before purchasing the book and subscribing to scannerdanner premium, but within the last few months my knowledge has grown tremendously and I now have ase certified techs asking me electrical/troubleshooting questions pretty much regularly. Not saying I know everything or that I'm the best or anything like that, just trying to give a testimonial that these things are well worth investing into and will help you perfect your craft.

[@ScannerDanner]

Thank you William Tanner!

[@elyessy7238]

William tanner, you just explained my situation in terms of where im at with my career. I left a diagnostic shop to go to a lazy front end/tire chain store, worst mistake ive done. Im in the middle of making the transition to diagnostics, ive been watching Danners videos for ONE day. I swear i have made more of a connection with electric theory now more than my past 5 years as a tech. Im getting that fkn book. Just, wow. Thanks scanner danner.

[@Viper81766]

Paul is the best I have seen in my 51 years at teaching and diagnostic procedures .

[@martinsmartinsautobodyandr6740]

I've been getting many f150 trucks in for no crank no start no comm. Your method of testing for 5 volt reference is priceless. The owner has a few locksmiths and small shops check it out. After consulting with them not 1 person said they checked powers and grounds or for a 5 volt reference. Everyone said it's the pcm. The pcm is talking to several sensors so I ruled that out. Ruled out fuses and relays and ended up finding bad grounds. Many years ago I asked you about a 98 Chevy express van fuel issue and you steered me to the problem. I wish all my friends would stop calling me to beat my brain up with questions but somehow I always fix everything I touch. I'm a collision repair shop but hey money is money there days. It got to where I have to keep my doors locked and my phone off. Lol. I can't thank you enough Paul.

[@ScannerDanner]

what an awesome comment, thank you for sharing this with me and good for you man. You made that all happen.

[@billygreenhorn9275]

Great teachers like you make school and learning less stressful.

[@mike-yp1uk]

I have changed my whole career by deep diving into this program with a nothing will stop me attitude. I'm now an L-1 master tech who has completely gained the respect of my boss and co-worker because they know I can handle anything.

[@ScannerDanner]

That's awesome man! Thanks for sharing!

[@maxholmes6045]

I would just like to thank you for sharing your knowledge with everyone! When I started my 2 year automotive program, I quite my job and opened a mobile mechanic business to help me get through school. I have used your knowledge along with my teachers at Wenatchee valley college to build my business from the ground up. I started with a rusty old truck and a few tools.I now have a small shop and a fully functional mobile service van. You have made my dream of owning an automotive repair business possible. Seriously thank you!

[@ScannerDanner]

This is awesome! Would you mind posting this to the feedback page of my website? www.scannerdanner.com/leave-read-feedback-new.html

[@maxholmes6045]

Absolutely, I try to do that now!

[@bilalflayeh6889]

I am from Middle East ( Jordan ) , I bought your e-book 2 years ago , it helped me a lot in my small business , I watch your videos every day , lot of valuable information . YOU ARE MY BEST TEACHER , THANKS MR PAUL

[@ScannerDanner]

That's awesome Bilal! God bless you man

[@dontehoward1554]

Scotty kilmer didn't even go in depth as much as you did. Im a new subscriber keep it up. I love it!

[@keivanabdollahpour8737]

There's only one way to describe you. When you're fixing a car, the issue looks like a scared kitten stuck in the corner, cause it knows there's no scape for it, YOU WILL find it. My admiration to you. I wish I could be your student. God bless you.

[@chuym1983]

This was the exact issue with my 2008 Mazda 3. I grounded the main relay and got com, a crank and start. Now I have to pull the box and check for that broken ground. This video is a god send. Can't thank you enough Scanner.

[@MrTravisAl]

Which main relay? i have a crank but no start. And a security light that blinks while vehicle is still unlocked. Checked Keys have proper function Immobilizer functional.

[@chuym1983]

@@MrTravisAl There should be one specifically named "Main". Check the diagram on the inside of the cover

[@MrTravisAl]

@@chuym1983 I figured it couldn’t be the obvious main fuse, especially since everything on this Mazda has been a complicated sob. 🤦‍♂️ I’ll definitely check in the morning. Thanks!

[@chuym1983]

@@MrTravisAl Yup. When you're under the hood and you pop off the fuse cover. It should be the only one labeled main. Keep in mind this relay is usually "switched" so you have to un ground it when you're not planning on having the engine on

[@ScannerDanner]

Thanks for your patience and for staying with me my friends. While I am teaching I cannot produce the same amount of content. I could if I wasn't so picky on how I film and edit things now :-). Watching my early videos is painful. The content has always been good, but the camera work and editing has not. Anyway, this current class runs until the end of May, look for more consistent uploads for June and July. Also, don't forget about ScannerDanner Premium on my website! There are currently around 350 videos with 200 of them recorded lectures from my class at Rosedale tech. The other 150 videos are exclusive case studies with the month of April getting 3 new uploads: 1. "2008 Ford F150 4.2L Waste Spark Ignition, No Spark From One Coil" 2. "2011 Hyundai Sonata 2.4L No Crank Troubleshooting (multiple CAN system faults)" 3. "Honda Power Window Circuit Operation and Testing (multiplex control units and switches)" Last thing, behind the scenes my web developer and I are constantly working to improve the website and in particular ScannerDanner Premium. You guys have been asking for a dated video list like KZbin uses, and we are working on this as we speak. I've had over 50 new uploads since moving ScannerDanner Premium to the website and some of you are having difficulty locating them once I put them into a playlist. So this new dated list is going to help with this a lot. Thanks again to all of you for helping me make this possible!

[@allanandrowey5219]

Love it all. Thank you so much. We will wait as long as it takes for new uploads....and maybe even a new book of sorts?

[@ScannerDanner]

Working on that too!

[@jarinwilson9539]

A New book....? OMG, I just giggled like a school girl. It could have pop ups and/or you have to read it with 3D glasses.

[@ScannerDanner]

Haha yes!

[@ruddygomez1455]

ScannerDanner. Have a few questions

[@ramblinredace]

Great video man I can’t thank you enough. After putting a transmission in a 05 mazda 3 I picked up for 200.00 I had one flawless day with it and then this happened. For a few days now I’ve been battling with it. Knowing nothing about relays and ground switched circuits I had no idea what it was going to take or if it was even possible to get this car going again. I was able to learn a lot from your video and in a few shorts I had the car running again. Thank you again!

[@darrendesmarais8124]

I'am a premium member Paul and I recommend your website to everyone. I'am a journeyman heavy truck tech and the material you teach is very adaptable to my trade. All the same concepts, and most computers are very accessible on heavy trucks, so don't have some of the issues with cars. Keep up the good work. Thanks.

[@ScannerDanner]

Thank you Darren!

[@jackjohnson9989]

Mr. Danner, I wonder if you truly have an idea of the (global) value of these videos you post. This Mazda 3 for example, is one of those Japanese killers that likely would not have gone to auction in my neck-o'-the-woods but probably to five or six mechanics with the owner cursing each of them (usually behind their backs - but not always!). I can only urge every viewer to support your channels in whatever is affordable to them. You are a God-send - selflessly sharing your knowledge and skills with the rest of us.

[@ScannerDanner]

Thanks so much my friend

[@throttlebottle5906]

where is it that so many skill lacking mechanics exist, maybe some will move there!

[@jackjohnson9989]

Ha! Ha! Actually the fellas aren't too bad. Often they have little or no technical info to go on with late models. Mainly its an ego and greed thing. Notice what a great arrangement Mr. Danner and garage owner Pete have? The latter appears to have more than enough spanner work on his hands and is happy to pass the auto-electrical along to his friend.

[@throttlebottle5906]

I guess I'm just a sucker then, cause I do major in depth troubleshooting and nasty no-lift repairs for peanuts (family, friends, enemies x10) If I'm lucky I get fed dinner, but most often! I end up paying for dinner also :))) atleast the devil and god ( folklore) will see me as a saint ehhh;)

[@kennedysgarage3281]

This video just popped up & I had to watch it again, but you really can see your teaching skills shine through on your thought process & in the way you explain system layout. I always learn something every time I watch. I suppose Paul I owe you a lot for me being the tech I am today 🙏🙏👍

[@ScannerDanner]

Such a great compliment. Thank you so much. Made my morning

[@kennedysgarage3281]

@@ScannerDanner you deserve it 🙏🙏👍

[@enriquebauza749]

Hi paul. Man great learning videos.you know anyone can do the mechanical side of an Automobile. But today with these high tech automobiles those techniciands that can master using scanners electrical schematics and learning how to read them CORRECTLY... thats where the $$$$ is.In the 80"s 1985/ 86. I was working for Audi. Lucas Lighting did the electrical harnesses for Audi. Paul talking about a devastating migraine. Continue the great videos dan. God has given you great knowledge as well as field experience. Am an ASE Masterr Tech. For 40 years. Had to stop working 8 yrs ago du to dissability. Sold all my tools and scanners.you keep that dream still alive in your videos and i appreciate you greatly. There are alot of honest technicians out there that are very knowlevdgaeable but theres also alot of parts changers that will still your money charging you hours of diagnosis because they dont know what they are doing. Am lucky i have my bestest loyal frind that helps me in my car issues. I really dont trust some techs in this industry. Thank you so much paul. May god bless you, your family, your students.👍👍👍

[@REPOOCNITSUJ]

You should seriously consider writing a prequel to EPD. Basic Electrical!! You already have loads of video content. Great as always.

[@sneakysausage1567]

Thanks! Just saved me a bunch of time your videos are 100% the best.

[@ScannerDanner]

ah man, thank you so much! I really appreciate the support but I'd rather see you get something for your donation! Go to my website and on the home page, register for a free account, then email me your user name and email address you used to register and I will open SD Premium up for you for a month. The normal cost is $11 USD per month, but I'd be more than happy to give you a months access for this gesture. You can email me at [e-mail] and mention this exchange.

[@sneakysausage1567]

@@ScannerDanner Mate I am a experienced auto electrician i get this type of fault all the time i just wanted to tip the 5 volt reference check theory it changed my normal approach makes my job easy and as a owner/operator makes lots of money cheers anyway.

[@khadaryare6068]

I’m Auto mechanic student, graduating this year. However, never electric and engine performance Diagnostics been easier than your videos. I’ve been watching your videos about a month and now, I use your methods at my job. Thanks

[@mikeoneill7360]

I can honestly say that I have watched many of your videos and you most certainly end up in the fuse box a majority of the time. The 5 volt ref from the maf sensor harness is pretty cool to rule out the computer. What a great way to spend the evening with Scanner Danner, thanks Paul.

[@ScannerDanner]

Thank you Mike!

[@nickdimovski7272]

old video but currently watching this today to diag my ms3, this video was very informative and bridged some gaps i was having trouble with on my car. you are a great teacher i wish i could have had the opportunity to learn from you in person

[@ScannerDanner]

Thank you nick!

[@ozzstars_cars]

Finding the problem for a no start is always a fun challenge. Another great SD vid!

[@8953147]

I used your test light technique to troubleshoot a brand new harness in my car's audio system. The test light is a great asset in finding problems besides protecting the circuit. Thanks Paul- you are inspiring!!!

[@SimplyDiagnostics]

Great video Paul - “unless you’re looking for smoke” I nearly had an accident when you came out with that 😂 Don’t be worried about the amount of videos you’re uploading, there’s a lifetime worth of content already. People that see the value in what you share realise what it’s worth 👍 Steve.

[@cougarkitt]

Watched this 2 months ago and kinda got what you were doing. I Bought your book and now working through the sd premium videos at the moment. Just watched this video again today and wow! Reading the book has made this so simple to understand circuit design in this video. Well done on your efforts!

[@ak5546]

You still so young Here in Sweden if you reach to 75 year's you still young. God bless you and your family . Best regards

[@vasileios_glystridis]

Hi I must declare here with my whole honesty ..... This subscription and became a member in your web site... was the best INVESTMENT in the last decade.... At my early fifties I have learned to respect technicians worldwide and YOU My friend belong in the TOP 5 worldwide ..... Thank you for sharing your knowledge and experience. Vasileios Glystridis Automobile technician Canada

[@jasonouderkirk5142]

Lets keep it simple and straight to the point....you saved my a$!....I am a hs math teacher and any sort of electrical issues used to scare the hell otta me...With your vids and amazing attention to the learning side....I was able to diagnose and fix my audi that would have otherwise been thousands of dollars at the dealer......thank you so much and I will absolutely be purchasing your book, not only for my benifit but to help you continue these videos.....As a teacher, this is our biggest reward and reason......

[@jasonouderkirk5142]

Use to lol

[@ScannerDanner]

What a compliment! Thank you so much for the support and nice job fixing your car. What was the issue?

[@ScannerDanner]

Unfortunately most mechanics just throw parts at the car until it's fixed, so good on you for fixing it yourself

[@jasonouderkirk5142]

It was the BCM, the previous owner did not take the wiper off to remove the ecu cover.

[@jasonouderkirk5142]

Water got into the BCM through the cover.

[@ronvonbargen8411]

Great video. Never thought about importance of using a test light. I usually use a dmm for stuff like that. So hard to fry ecm with one. But as many times as I have forgot to switch the confounded test lead back to volt side of multimeter. I could see myself forgetting if it were a jumper wire I was using instead of a test light. Between you and Eric O. My diagnostic skills have increased tremendously. Thank you.

[@ken4head]

Great explanation on how to check this problem! I will be following it step by step tomorrow, on the job, at a Mazda dealer, while I try to diagnose a 2010 Mazda 3 auction car that came in with no communication with pcm and a no crank condition. This video will save me hours. Thank you.

[@MrTravisAl]

Hey Ken. What did it end up being? a fraued wire / corroded terminal in the harness? Did you have security light issues? Crank but no start? I have a 2010 Mazda CX7 and the security light blinks even while car is unlocked. I troubleshot the immobilizer and key and they’re compatible. (It cranks. No crank if immobilizer is unplugged or moved away from key. But when returned it cranks.) The owner is my friend and is desperate. I spent all day on it reprogramming keys. Changing spark plugs back after another tech changed em. Checking fuses etc. I’m at a loss.

[@guysrealma4063]

You just helped me diagnose a car that I haven't been able to crank in 4 years!! Thank you sir.

[@MrTravisAl]

Let me guess? Mazda? Lol

[@petescustomcarshop]

Corroded fuse box imagine that. When I fix cars speed and accuracy matter I can't say for sure but I think I would have gone straight for the power circuit and if I find corrosion in the fuse box, well there you go. I do understand you are a teacher and you are teaching the fundamentals. Great job! Thanks for sharing.

[@dryamaha4905]

Hey Dan I love your channel I’ve been a mechanic for since 82 so what’s that 40 years Porsche‘s general motor‘s master tech now I’m Volvo Mac truck master tech your diagnosis process is awesome I just want to say you do a great job have a great day

[@AutodiagnosticoDetroit]

really that you are the best !!! I am a faithful follower of your channel ... I learn a lot with you. blessings for you and your family!!!

[@Re-tirados]

Amigo de FD Automotriz?

[@lo0ops]

Hey Scanner your production quality has gone right up. Love the overlays that really helps.

[@wyattoneable]

Love your editing! The picture in picture and the commentary flows beautifully together. Then to find that issue with the steps you display was a lot of fun. Plus the wire was easy to get to, nice.

[@ScannerDanner]

Thanks Wyatt!

[@tnamen1307]

@@ScannerDanner Sir, my car SDVC function doesn't work in my i20 2011 1.2. all the other functions volume, etc. are working ok. Please show video how to check the SDVC signal wire damaged or shorted. Thanks in advance.

[@randywilson8300]

Watching you explain and fixing problems on actual vehicles is really cool you don't believe how much this has helped me it thank you so much I live in trinidad I would really like to sign up for you on line classes

[@ScannerDanner]

Do it! You won't be disappointed www.scannerdanner.com/join-scannerdanner-premium.html Look forward to hearing from you more, thanks so much!

[@neverstoplearning382]

I got the book. The best ever. I have learned a lot and applied those principles on the field with great success. Thank you master.

[@ScannerDanner]

Thank you so much!

[@simbad909]

Nicely done...electrical tracing is a nightmare for most ppl..and costly... hence auction lol ..ur reaching ppl years later and helping.. very cool

[@edralinbustalinio5213]

thumbs up....... great job bro.....your the expert......open circuit is not an easy to find out the fault, only experienceable and aptitude like to solved such lost communication....with PCM no crank, security light flashing.....im proud of you....

[@karlwestfall2404]

Thank you so much for making this video. The very same identical thing happened to my 2010 Mazda 3,and had the guy at shop that chases electrical gremlins not been on vacation,it would gave been there Friday. Sunday I ran across your video,and it's now happily running thanks to you.I know they'd have charged me a minimum of $500,again "Thank You"

[@MrTravisAl]

Did it end up being a corroded terminal in the harness? Did you have security light issues? Crank but no start? I have a 2010 Mazda CX7 and the security light blinks even while car is unlocked. I troubleshot the immobilizer and key and they’re compatible. (It cranks. No crank if immobilizer is unplugged or moved away from key. But when returned it cranks.) everything was fine until another mechanic changed the spark plugs now all the sudden the vehicle wont start. The owner is my friends and desperate. I spent all day on it reprogramming keys. Changing spark plugs back etc. I’m at a loss.

[@johnaclark1]

This is diagnostic gravy for those of us SD Premium subscribers! Wish I could get a car in my shop with such an easy one. Love it!

[@arnoldnxtlvlupsablan9405]

First Id like to thank you for making this video, With that said I manage to acces the electrical issue im having..and lucky me its what this video 100% hand in hand situation I was having..with my fully built mazdaspeed3 (even better) your demo car happen to be,not quiet but almost identical car..thank you Sir im oretty sure i can find the link on your book here somewhere,,but to show my appreciation and and how thankful I am for your time to share your uncanny gift in your field..to us next gen guys.wether import or domestic...Sir you are....LEGEND.✊🏽✊🏽✊🏽

[@rickcoleman8903]

What kind of chump would give a thumbs down? Thanks for your teaching and sharing your time.

[@lasthope703]

I’m glad you post this. I pretty sure I am going to watch this again.

[@kyletuttle6919]

One of the best teachers i've ever seen.well worth the 11 bucks a month.thanks danner.

[@ScannerDanner]

Thank you Kyle!

[@hardway523]

Man I get emotional watching your videos, you’ve given me a new drive in life learning about diagnostics. I’ll certainly be getting the Book and learning more about how the premium classes work. Your work is not in vain Sir, thank you!!

[@kennypatrol2zero616]

Nailed it, I think I'll order your book, I've seen enough of your videos to know whats in it, but it seems a cracking refrence book to have

[@frugalprepper]

Great Video! Love the setup. This one is a goldmine for some good foundational information.

[@davidmotoman4956]

Loved it when you found the open circuit, My mind was going check the Wire it self at Both Ends to see if possible either faulty terminal at computer or then at Fuse Box. Loved the Fine Paul. you are such a great teacher in fault Diagnosis and repair. Wish i lived a little closer would certainly attend a few of your Classes, can never stop learning Cheers from Australia

[@peterdatechmen5506]

Quite a common fault,also burn out in white plug where ignition feed is (you tested) through poor ground and the same green gunge! Love the videos Dan, makes teaching my staff so much easier with these quality vids.

[@ScannerDanner]

Thanks Peter. My name is Paul btw, my last name is Danner :-)

[@joejones711]

You are great at what you do. I wish I had your knowledge and experience about diagnosing engine problems. Keep up the good work.

[@ccxtransport4192]

Paul it’s a great feeling seeing how humble you are and how you share your knowledge thank you for that and may God bless you and your family . Also you were really funny at the end keep on smiling and handing them out as well

[@billyyoder8171]

Thank you Paul. You mean so much to all of us technicians. Bless you brother. You're doing a Godly work by sharing your talents and light to the world. Love you brother.

[@ScannerDanner]

Thanks Billy!

[@nicknicu1787]

Great video as always Paul! 👍 I can only imagine the guys that sent this to auction : scanner into the OBD 2 port,no COM...computer dead send this to auction! I bet you knew what’s wrong with it once you pulled that relay and saw the green death! 😁

[@darshanabandaranayake2605]

your effort is highly appreciated since many of learners seeking better guidance as what you given for us.That is considered as great empathy ....keep going we the best followers...

[@dashtyATG]

Thanks a lot for the whole 20 minutes. For the 1st time I've managed to listen very clearly and learned something amazing from you. Bless.

[@ScannerDanner]

Glad it was helpful!

[@dashtyATG]

@@ScannerDanner yes sir thank you.

[@meekmill6214]

I needed this so much...my 03 ford expedition sat for months many mechanics told me all kinds of things but I knew they were wrong and piece by piece I found my problem but couldn't solve it and here was the answer 😂😂😂😂...thanks

[@todayintheshopbanksy5904]

Always makes me smile when they fire up. Thanks for posting bro

[@georgebaerreis4720]

Thanks for the great video, your channel has some of the best information on auto repair out there. Please do more test light videos, they're really helpful for people that can't afford the high end scan tools.

[@ScannerDanner]

Love my test light. Will do brother. Thanks!

[@cosmo7816]

I've watched enough, I'm signing up for the premium. I've been to my local college and no one explains it as well as Paul has. Can't afford to go back to school for automotives but I think the online scanner dinner premium will be just as good👍👍

[@ScannerDanner]

You won't be disappointed my friend. Thank you!

[@billrimmer5596]

Wow that was really slick!! Liked those little pins with the balls on the end. 5volt ref and incandescent test light.

[@PistonShack]

Awesome Paul. I watched to the end and wrote 5 pages down everything you pointed into my notebook. I'm going to get a copy of your book. Cheers)

[@Airman..]

Its always a pleasure watching you in action Danner

[@tommiebartley3081]

I wish I could download all your diagnostic knowledge into my brain lol! Thank you so much for sharing the teaching clips it really helps me! Thank you for sharing with us home garage DIY'ers!

[@2.3fox]

@2:58 I want to thank you for this addition of videos you have listed! 🙏🏽

[@binar91]

Thank you man Iam planning on opening a diagnostic shop. And iam on your channel like 24/7 i have learned a lot from you

[@ScannerDanner]

thank you so much! After you watch them all here, visit my website and sign up for ScannerDanner Premium for another 470 videos and counting. Half of the videos are of a classroom training environment. Hope to see you there www.scannerdanner.com/join-scannerdanner-premium.html

[@TheGibby3340]

Nice study. Your video production is first rate, but you have done a couple in the past with a pencil drawing on the back of a pizza box I thought were fantastic! Would like to see the "Leafs" win one Stanley Cup in my lifetime though. 🤞

[@mostlymoparih5682]

Excellent video. You sir are very good at what you do. I like the fact that you do not forget the basics and that's what the great teachers do, they hammer home the basics. You are very logical and you use a lot of common sense. Common sense is not taught today in our schools. I guess I can't say that because you teach common sense. Thank you for being an exception to the rule, have a great day Professor.

[@mostlymoparih5682]

Old man glasses aye? You very funny Dr Jones.

[@peejaysantin6644]

sweet.another awesome video man.keep feeding us with more awesome videos. God bless you more

[@guyinthegreencar]

Great video. Very informational, I learn alot when I watch you. I am very mechanically inclined, but when it comes to electrical diagnostics im lost. Watching you helps me at work tremendously. Thanx so much for the videos.

[@TurningTool]

Very nice video. Although I don't repair vehicles, other than my own, I really enjoy the knowledge I get from your videos. Keep up the excellent work!

[@tonjiagriffith8689]

Awesome! I actually understood what the problem was, and why the solution was the answer. Unfortunately, my problem is different. But to be educated is always appreciated. Thank you.

[@Diagnosedan]

Great Video Paul, your a real Mcgyver fixing that car with a piece of wire!😉

[@nemanjadzombic6101]

I thought you were watching SD and I was right.

[@Diagnosedan]

nemanja dzombic i watch most video's of all automotive channels!😉

[@jeffk4223]

Best YT video i've seen in a long time. Brilliant, a true mater at work.

[@ScannerDanner]

Thanks so much!

[@johnbonifas6040]

Just keep doing what you do Paul you do an excellent job I have a repair shop and I made so much money off your accurate and faster he got a whole lot more customers thank you very much God bless

[@joshuaburt1017]

Thank you brother for what you do. Love watching all your videos. You are an intelligent man. And I'm sure your students would agree.

[@Ironblank1]

I bought your book already I just wished it was hard cover, I’d paid the difference... I learned a lot on this video. Thank you so much for your videos!

[@baxrok2.]

Excellent! One of your best videos yet on this subject. Thanks Dr. Danner!

[@rogerrivera4012]

You are awesome Mr. Danner. I can’t stop watching your videos . God Bless You!

[@stephanrosty1924]

*welcome back paul I have been waiting for along time*

[@valentinogallego4091]

Man I've been binge watching your videos and I've gotta say, I get a weird high when you go through the process of diagnosing and confidently state that it should turn after an intervention. Almost like I'm there working working on the car aswell 😂 Keep up the good work, I like your style of diagnosing because I dread spending on unnecessary spending for parts

[@pigeonsil240sx]

me too lol its a taste of the high you get when you fix a problem using the skills learned.

[@IsshmanGarcia]

Another great video Paul. I recommend 2 books to all who want to learn. 1. Paul Danner's Engine Performance Diagnostics Book- A+ Rating! 2. Tony Candela's Electronics Book. GO BRUINS!

[@ScannerDanner]

I used to like you haha Go Pens!

[@IsshmanGarcia]

ScannerDanner Lol.

[@willyck948]

cant believe there's 5 thumbs down This is great demonstration of relays. Had a generator with three sequencial safty relays throw me for a heck of a loop one WEEKEND😅 Start switch would close the control circute, once closed power would back feed all three relay control circutes but if any of the safety switches lost ground the circute would open on all three relays. Drove me crazy and found falty oil pressure switch. Leaned how relays can back feed once closed to stay closed till lose of ground and be hooked in series at the same time.

[@jvst20051]

You make a crank no start diagnose so easy when i try to figure out what's wrong with my car i dont even know where to start

[@madmotorrepair1748]

Been looking forward to another new episode!

[@MrBlazenBruce]

Great One!, You seem really happy, Hope everything is going well boss!

[@shawnmasterson8655]

I have to give thanks. I have a Pontiac g3. It was tweaking out, shifting funny and had now acceleration. It pulled a U0100 code. After watching your video I decided to inspect the bottom half of the fuse box. there was a smoking gun. Someone spliced a wire with a odd ball compression barrel connector. I cut it all out and soldered everything. just like that It's back to normal.

[@garytattan]

Best teacher I’ve ever seen.

[@jarinwilson9539]

MIL? 5 volt Ref? Comm? Does it Crank?(the relay maybe computer controlled)Spark? Injection Pulse? Fuel Pump activity when key is cycled/while cranking? Security Light flashing? These are just basic fundamentals...keep cool keep calm and grab a Snickers....I mean an incandescent test light LOLYou da Man Paul!

[@oddmanout7755]

Very high quality education. Highly recommended to any new mechanics.

[@ScannerDanner]

Thank you!

[@allanandrowey5219]

Perfect video dude. Thank you. I have it on my bucket list to visit your class room

[@TheCoatneyadkins]

EXCELLENT EXCELLENT video Mr Paul.... thank you!! I binge watch all of your videos... and your book is the bees knees... the troubleshooters Bible.

[@khadarilyo4838]

From Somaliland I like your lessons and download it everyday.

[@brendo3314]

You make it look simple the sign of a top class teck

[@ChuckWD33158]

Another great video. Amazing how a little corrosion can mess stuff up. Under the hood is a bad location for the computers and fuses and such

[@JohnDoan-iu7sm]

Lol unless you wanted to look for smoke. Hilarious. Thanks for the videos. Electrical and I don’t always jive but watching your instruction I have gotten better so thank you.

[@Joeelectronicschematicsforauto]

I really enjoy sing someone what the stands electronic circuits That's the difference between the mechanic and the automotive technician there's not enough knowledge of electronics and I stressed out on my channel keep up the good work

[@RR-bt5xv]

You keep making videos like this one and my customers are going to be fixing their own cars LOL awesome video keep it up.

[@ScannerDanner]

lol sorry about that

[@johnnguyen3694]

Great Teacher !! Explain very practically and usefully ,easy to understand,that 's totally different with a lot of orher Instructors....Thankyou !!!!

[@ScannerDanner]

Many thanks!

[@jakeandrus690]

Good stuff there Paul, great basic checks there