You Won't BELIEVE Why this Mazda Stalls Out!! (Part 2)

[@NewLevelAuto]

This one was so much fun to talk through! We need MORE like this !

[@theadventuresofjavier8698]

🤚🏼

[@brianmason8400]

AGREED!!!!!

[@fernandoviniegra6909]

We really miss you 👍

[@jgeorges3061]

WE need u to come back brother. 😀😀😀😀😀

[@bostedtap8399]

20th car remove distributor cap to immobilise, 21st century car juts loosen a ground wire. Great diagnosis Ivan, well done Keith. Thanks for sharing

[@ouch1011]

Older cars require good grounds, too.

[@wyattoneable]

You can't call it "work" when your enjoying yourself that much. Great process and diagnosis. Fun to watch too.

[@theadventuresofjavier8698]

🤚🏼

[@mmichaeldonavon]

Ivan. Reminds me of an aircraft UHF radio problem I worked "back when" - (On a C-141B Cargo airplane - a hundred years ago. :-) Was in work for several shifts and I just knew I had a bad ground. Found the ground wire was attached to the airframe with about 3 strands of conductor. It would read continuity, with an ohm meter (which a tech told me about) but it would not carry any current - I used a test light on it. :-) Funny how these bad grounds cause SO many problems. But, like you always say" (Check those powers and grounds.) Enjoyed this chase - good to see Keith once again. Thanks.

[@michaelslee4336]

I work in a Chlorine plant, and it was built new back in 2000, the old plant, that the new one replaced had an issue where a reactor would sporadically trip off. It took quite a while to figure out that it would happen whenever an operator would use their 2 way radio near a particular temperature transmitter that had a shielding issue. Talk on the 2 way and bam off it went. Damn.

[@valentingeorgiev5001]

@@michaelslee4336 I had a similar problem triggered by using the 2-way radio feature on the Nextel phones (more than 20 years ago). The device had a bunch of optic sensors and was housed in a plastic box without shielding. When a Nextel was used close to the device, the front optic sensor was going crazy and generating false pulses. I covered the inside of the housing with aluminum foil and grounded it - problem solved. It is amazing what a wide spectrum radio waves can do to sensors.

[@michaelslee4336]

@@valentingeorgiev5001 Nice pick up, (no pun intended) 🙂

[@tmanda323]

Michael D, "Found the ground wire was attached to the airframe with about 3 strands of conductor. It would read continuity, with an ohm meter (which a tech told me about) but it would not carry any current " just simple voltage drop test would show where was the problem

[@mmichaeldonavon]

@@tmanda323 You are correct, sir. Same as a voltage drop test from an alternator output terminal to a car's Positive battery terminal. . I ask you to "cut me some slack, "as that was over 40 years ago" - I may not have been thinking "voltage drop test," then, on that frayed Ground Wire that had turned itself into a resistor. :-) Oh, as a thought: Do you think "current flow" is "in the conductor," or on the "outside of the conductor.? " A couple of schools of thought on that. Thanks for your knowledgeable comment.

[@autotek7930]

I run across this all the time..... I'm surprised it took that much testing to find that but in my case that's all I work on is repaired cars coming from huge body shops. I will say your capabilities exceed mine so knowing I can do this without all that tooling makes me feel pretty good about me capabilities. I do watch every video you put out so I can expand my knowledge so it's really appreciated

[@thejoneseys]

Wow, it must have been like that since the bodywork repair. Excellent work and respect for working outside in the cold ❄️🤧

[@johnshellenberg1383]

Shoddy body shops don't pay enough attention to wiring, and they have no clue how much chaos can be created with the simplest mistake. Awesome job diagnosing this.

[@PineHollowAutoDiagnostics]

They actually painted the metal and tightened the bolts really well! 😅

[@theforeignrabbit5037]

Your video was freaking awesome! My 2016 Mazda CX-5 exhibited the exact same symptoms a few years after front body work from a deer collision. Car wouldn’t start with the headlights on, only if off, then would shut down when turning on the headlights. I checked the two grounding bolts for the ABS module like you did in your video and they were corroded. I took them out, cleaned off the rust, applied dielectric grease and torqued back down and the car started and ran like a dream with headlights on! Thank you, thank you, thank you!!!!! You saved me a ton of money from having to go to a dealership repair center. You rock!!!

[@jorgefernandez-mv8hu]

That was amazing! I had a similar problem with my 1984 Jeep Cherokee. I would turn the turn signal on and the headlights as well as the horn would turn on in sync with the turn signal. I found that all of the wiring met under the battery tray in a connector that had become crusty and green and fell apart in my hands. Being under the battery you could not see it unless you took the tray out. I spliced each wire individually and moved the loom as far as I could and I never had that problem again. This Diag brought up a good point and weakness in the vehicle in that because that ground looped from module to module, it takes an extra amount of time to isolate which module is causing that craziness. On the plus side, because that ground goes to one point, you can go there first to make sure it is properly fastened. Great Job finding the issue. You are the man!

[@accordingly]

We get crazy cars like this a lot. They’re a blast to diagnose. Working for a manufacturer with freshly painted cars and people using a wrong bolt that doesn’t cut the fresh paint leads to these kinds of cars!

[@jeffreyfwagner]

It is stuff this that makes me think that my next new car will be a 1970 model. Thanks for a great video. I sure hope that training for techs is at the level you demonstrate in your videos.

[@giggiddy]

Lol. My thoughts exactly. I may start buying older instead of newer.

[@ouch1011]

Ground problems plague old cars, too

[@TheFrenchPug]

A Pimp My Ride car.

[@BoogieDownProduction]

New cars are much more reliable and lower maintenance at that.

[@dave3657]

Excellent diagnosis, better than watching Colombo. I had tail lights in a 68 Dodge that had issues from a bad ground. I soldered on a dedicated ground wire to the socket and screwed to a good ground. Worked perfect.

[@misterhandy5121]

Ivan, I wonder if it even ever needed a new module in the first place? I think the dealer blew it on this one. They saw the module throwing the code and called the module. sheeeesh !!! Great job as always and glad Batman was with you Robin!

[@SawmillerSmith]

Probably didn't need a module but they also don't guarantee anything.

[@russellhltn1396]

Given how close the module is to the area that was rebuilt, it may have been physically damaged. Even if it wasn't, the fact it was there made it a fair assumption.

[@robertm708]

Ivan, I've subbed for a few years. Enjoy your videos so much. Thank you for all that you do. The time you've invested into helping people think and diagnose smarter is nothing short of amazing!

[@AP9311]

So it was bad grounds from the accident, over spray on the bolt hole. Wow. All that funny business causing that! Nice job and saw Keith on there!!! Nice! Awesome video!!

[@drejkee]

Good job ! I have experience of reparing auto electronics for 10 years. But I.m from Belarus and In our country we dont have many new cars. And for me looking your videos is very educational and important. Thank you !!!

[@leonardgucciardo8386]

Had the similar problem on a 2009 Pontiac G8. Turn the wipers on no wipers and engine would shut off. No crank throwing ABS codes ground on frame rail G102 was the culprit. Usually when you get bad grounds several unexplained codes pop up with no explanation from the other circuits completing themselves thru whatever paths are left to ground. Great stuff love it when I get one of these.

[@billsmith2212]

When you even suspect a bad ground , it might pay to review all the manufacturer's grounds on a wiring diagram . Then from battery negative , attach test grounds to the body , chassis and engine to bypass the possible bad ground and retest . It may save time . Great find .

[@walterk1221]

Excellent! My pursuit of why the right turn signal hyperflash would have nailed it (the Eric O approach for the win!).

[@gordonrichardson2972]

Yes, I vote for eternal visual inspection in a case like this, rather than getting hung up on the oscilloscope.

[@walterk1221]

@@gordonrichardson2972 👍 there was no obvious interaction between the hyperflash and the other symptoms but sketchy grounds are not to be ignored as they can be (as here) shared with other loads/modules/items.

[@Bwelsh1981]

Good One Ivan! This is what I try to teach the young guys at work about having multiple grounds in One location and what happens when it isn't fully connected. Great work

[@bopeep2367]

When the can is elevated like that, no need to unplug modules, just remove power from them by pulling fuses. Had somewhat similar issue with a 2000 Caravan, no start and the CCDBus was at 9V KOEO. Unplugging the related fuses, when the HVAC module fuse was out it was all good. Found a cold solder joint in the HVAC module, as well as a bad pin and slightly melted connector as a result of resistance on the ground pin. Reflowed the module, replaced the bad connector pin and it was all good. Had been to several shops and shot with the parts cannon. My diagnosis and repair was 10% of what he previously spent, not to mention the multiple tows.

[@jyao5409]

Brilliant. Kill the power to the module while keeping the pass- thru alive. That way the BCM can be checked if it is corrupting CAN...

[@TonyRule]

Of course, all those shops refunded the money paid for their guesses plus the cost of tows since they didn't fix the problem, right? Wait! Is that a pig I just saw fly past the window?

[@ryanravencaller]

With newer cars it could be anything, hell anyone else would tell them its the headrest module! These guys are amazing techs

[@markmalikowski4971]

That is soooooooo cool! A single,simple ground could cause so much trouble! Great videos, Ivan.

[@MohammedMohammed-op3cz]

Brilliant my friend... greetings from Tripoli Libya

[@basshunter428]

That car has been one of the highest rated on the market for years! Goes to show you that electrical issues can pop up in any newer (2000 on) vehicle! They sure don't make'em like they used to (90s and earlier)! Great job guys! Great to see you're doing well, Keith!

[@erik_dk842]

It's not Mazda's fault that the body shop made a bad ground connection.

[@gordonrichardson2972]

@@erik_dk842 It's a design flaw when a single bad ground can cause half of the modules on a car to fail.

[@BoogieDownProduction]

@@gordonrichardson2972 Sure but people arent typically taking bolts off, painting then putting the bolt back on. And body shops should know better.

[@roxanneabbott8424]

Awesome study and NPR! Great job!

[@ecaparts]

There’s your problem lady!! I love it. Thanks Ivan & Keith!!

[@brianmason8400]

It's always going to be a better day when Keith gets involved 😊

[@keithfork8663]

Love it when you and Keith collaborate.

[@stu-po]

Incredible! I really like how you explain the data collected and probable causes. Then discuss how to collect more data to confirm or disprove.

[@khalidkfy7368]

Very valuable information and very nice diagnosis

[@High_Tech_Mountain]

Awesome part 2!!! W/live tech support hahah Thanks for sharing Ivan. No parts required once again!

[@TheFrenchPug]

Man, it ain't easy doing what you're doing. But your brain tends to figure out what you should most likely shoot at every time. A stupid ground connection trying to ground itself to a painted surface. Awesome! Love how that simple fix solves all those problems. I'm learning a lot of these issues are grounding or wires looms that are broken or rubbed through. The car creates its own problems or someone that touched it.

[@diamondstateautodiagnostic5250]

Man I wish I had tech support a like Keith and Eric o and even you .having you guys on u tube is awesome

[@bombardier3qtrlbpsi]

Great job again Ivan! Thanks for sharing.

[@Paul1958R]

Ivan Great video, case study, diagnosis and fix - thank you! And thank you to Keith D! Paul (in MA)

[@htownblue11]

Ivan, your passion for diagnostics never fails to shine through my man. Well done.

[@neverstoplearning382]

That explains how important the ground is. Amazing job Ivan.

[@flatdaddio]

That is awesome!! When the fix calls for scratching the paint!! lol

[@brandonandkeiafink204]

That is really awesome! When looking at all the codes and not having a wiring diagram in front of me, my initial thought would be to go after the voltage code the ABS module was setting. The pico scope is such an awesome tool!

[@aldrinalmario1513]

Awesome NPR fix Ivan! Agree on the disadvantage with out the scope, and yes, for me was gut feel is leading to a ground issue somewhere on the right side of the car being that the right turn signal was acting differently.. I would have scratched and tightened all the ground points within that right side front area and tested from there.. might also call the FCBM after that if the problem persisted.. great to see Keith get on it as well! Thanks for taking us along. Cheers!

[@williamgagnonroadboxservice]

Body work Gotta love the guys that do this crap!!! Thanks for taking us along!!!

[@keithwelton]

This diagnosis does teach us that although cars get ever more electrically complicated the basics of simple electrical connections are as important as ever. It was nuts and bolts that caused the problem and the fix was getting the spanners out, that gives us electrically hopeless amateur spanner operators some hopes of being able to fix cars.

[@gordonrichardson2972]

I think a visual inspection would have solved this long before the scope method. If you look at the lights, and one is not working and had previous body damage, that should be a huge clue to the ground wire issue.

[@rickchowsr2532]

Great repair Ivan. I’m glad you take the time to properly diagnose issues.

[@hddm3]

Good to see Keith again. Great find as always

[@jkbrown5496]

This is the stuff to learn if you are young. They may do away with ICE engines, or even cars. I see many speak of autonomous trucks, etc. But ultimately, all those things will develop bad grounds, or bad whatever that will require someone who can diagnose it. Professor Missy Cummings of Duke's Pratt School of Engineering commented in a McKinsey Institute podcast on how there wasn't a system set up to develop people who could fix robots/AI from the same socioeconomic class as the current forklift mechanics. Well, maybe Ivan and Keith should clue her in about modern auto diagnostics?

[@rider547]

Nice work! Love those tough problems!

[@jessegoodwin6843]

TSB: 09-010/19. Great videos Ivan! I'm a Mazda shop foreman in Wisconsin, and believe it or not, we see these painted grounds from body shops all the time.

[@JeffWinter1]

Nice when you can solve a problem like that.👍

[@michaelweatherhead9470]

Great video Awesome diagnosis.

[@browncraigf161068]

Gday Ivan, hope you are well. Craig from over here in Melbourne Australia. I work for Mazda Australia on the dealer support help desk (vehicle diagnostics) and the issue you have found, is a known issue through our dealer network. We actually have a Technical bulletin which was supplied to our dealers back in 2014 on this problem. The bulletin is titled 'Multiple Electrical Malfunctions after replacing Front Fender Stay during Body Repair'. So great find on your behalf. You have done well to find that issue, so congrats again on a good outcome! Cheers

[@PineHollowAutoDiagnostics]

No kidding! Very good info 👌

[@browncraigf161068]

@@PineHollowAutoDiagnostics Anytime Ivan. Keep producing great Video content. All the best. Craig!

[@additudeobx]

Nice find.... really something only a true professional could diagnose and repair...

[@brucepeebles4939]

I have dealt with similar issues in the past and NAILED it as "ground problem" in part1. In your situation, when you turned on the headlights, I KNEW it was ground being pulled up. I have seen charging-voltage at 18v (burning out bulbs) because the ground to the regulator was 3v above battery-negative.

[@dustcommander100]

I do believe! For those who do not believe, no proof is possible. For those who do believe, no proof is necessary. It's comforting to me that in so many problems, the module is not at fault. The presence of a module simply makes troubleshooting more difficult, and if we can get past that, we can be successful - as long as the module is still good and doesn't have some programming necessary.

[@baxrok2.]

That was crazy. NPR yet again. Thanks Ivan!

[@weshawkins7165]

Excellent video. Excellent diagnosis.

[@chrisstegink4402]

neat oh. had a kitchen garbage disposal turning on the lights in upstairs hllwy. or ball lighting/plasma travelling through a house. some things cant be fixed by our own doing. this was a good one.

[@exmotorsports]

That was absolutely Awesome...What a wild one to watch with the christmas light show. Like Keith said, we need more of these kinds of fun diags. Great work Ivan. Cheers

[@suttoncoldfield9318]

I guess I should count myself lucky. In 1980, I had just bought my first car, a 1970 Hillman Imp. I was checking it over. A rear indicator flasher bulb was out so I put in a new one. Job done. Pushed the stalk up to check it worked, the fuel gauge needle went up and down, the temperature warning light (no gauge fitted on this model) came on and off in time. The brake light and the side light in the rear cluster were off when the indicator bulb was on and on when it was off. I was, like, goggle-eyed. Dad walked past, said 'You got a bad ground there son'. And I had. Tightended the nut and order was restored.

[@dwoodog]

not only the ability to fix this stuff (what not many other shops wanna mess with) and be able to charge a pro rate not just friend prices is awesome. If I was spock I would want to mind meld with you.

[@raymondjones7489]

Awesome!!...I love it!!...another great video!!..thanks Ivan 👍👍😎

[@agostinodibella9939]

Nice job Ivan 👍 Another haunted car compliments of the Ground Goblins!

[@jeffjankiewicz5100]

Like you always say Ivan, powers and grounds. Nice npr fix.

[@alicetaylor1001]

Thank you so much for showing the process it was very interesting and I'm not a mechanic but I very intrigued and I appreciate you sharing

[@PineHollowAutoDiagnostics]

My pleasure! Thank you for the feedback!

[@danfalley9296]

Nice work Ivan. No parts needed, not for the customer though they got the ringer for bills.

[@kastooMcFry]

Wow! Amazing! I figured it was a mouse, wiring or ground problem. The lights found their way to a lower voltage through the bcm thar wasn't grounded. Great job. Thanks, Ivan.

[@deweycheatem1474]

Great having a buddy operating at the same skill level as you to kick thoughts off of. Two heads are many times better than one, but on the right track you were anyway. It is crazy what a partially lifted ground can do in a distributed system.

[@chiluco2000]

wow! the most parts-not-required car repair I've ever seen!

[@MTLeopold]

Ocham's razor wins again. Last guy was so close. People always blame the computer when they don't understand the problem. Ivan almost did the same thing. Luckily he stuck with it. An explanation is not proof, it's only a theory to test. Good job Ivan!

[@carmo9693]

Thought from the first part the ground, did not see the HighBeam thing until the 2nd part. That was key, yeah hindsight is always 20/20. Yeah, you can't beat a scope esp if you know how to use it. Voltage drop with a voltmeter is your friend too only thing you have to do one at a time, where scope if you connect as many as you can, can result in a quicker diagnosis. Used scopes years ago but not with the same back then did not have multiple connections to view, and nice to have if you are getting into the trade, not so good if you are retiring in a year or so. Love the videos you make them easy to understand.

[@gordonrichardson2972]

In this case I think a visual inspection should have been the first step, but Ivan likes to use fancy equipment, to cater for alternative diagnostic trees.

[@carmo9693]

@@gordonrichardson2972 He is excellent in using them too, we all learn from him and the scanner danner & SMA.

[@glenncerny8403]

Wish I had an Ivan and Keith close by. Nice work guys.

[@ocsrc]

It is amazing seeing how many parts are identical in Mazda , Toyota and Honda Reminds me of Ford, Lincoln and Mercury

[@tinkerwest]

This was a fun one for sure...You did speculate a ground problem in part 1...

[@duanedonaldson2262]

Body shop paint on the ground strikes again, carry an assorted size kit of star washers to cut into the point. ABS Module is always the first go-to Module. Elevated voltage attributed to a bad ground somewhere and lucky you had a code pointing to this Module, thanks so much for all the diagnosing that you published Ivan.

[@brucemadden1626]

don't know how much current is needed for that ground connection, but I certainly would have removed whatever bolt, cleaned it thoroughly as well as the metal area it made contact with, and THEN reinstalled it. Years ago, I installed a cruise control on my van; the VOM checked out, but with a test light, the light would not come on because enough current could not pass through the small wire I had attached the positive lead to.

[@ItsAlwaysRusty]

Great Diagnosis. Grounds are a pain sometimes..

[@petermartinez5573]

Wow, that was a great learning experience.

[@unclemarksdiyauto]

Crazy issue! Kinda unbelievable but not really! We have seen weird ground issues before. Makes it worst when it was caused by a faulty repair by someone else! Hey, at least you figured out what others could not! Great diag as always Ivan, and hey, not parts required!

[@mikeaho4143]

Awesome case study. That was so crazy. Thanks for sharing. It could've been an expensive repair if they went to a parts changer as it could've lead them to the wrong prognosis.

[@ralphmadera4366]

I think Ivan is an ET helping everyone with old technology!

[@ismarmeskovic]

That guy from NY 😄💪👍.Great job fellas!

[@sandybarnes887]

Keith

[@ismarmeskovic]

@@sandybarnes887 #1 !

[@dans_Learning_Curve]

I'm showing low battery voltage on my BCM on my '00 Jeep Grand Cherokee. I'm also experience a battery draw and my daughter has seen the headlights flash on with the Jeep just sitting. I'm going to measure the grounds on the BCM! I believe I've found the issue after 5 years of disconnecting the battery or keeping a trickle charger on it.

[@pigeonsil240sx]

wouldnt a simple parasitic draw test lead you directlly to the issue?just get a $5 harbor frieght multi meter set on amps in series with neg battery and posts then pop out fuses one at a time till you see that amperage drop,now you know what circuit its on and can narrow it down.do the simple ground bypass test by simply hooking wire to ground and touching it too the ground wire ends you suspect and look for changes.

[@gregscott344]

Now that one was crazy. And fun.

[@luismarty1685]

Amazing case study brother! Thank you.

[@rickd6421]

Fantastic footage Ivan. I love a bad earth video 😀

[@themechanic6117]

Amazing diag video. Really enjoyed this one.

[@jgeorges3061]

IVAN, what an AWESOME diagnoses/ video really impressed with ur ability to solve such an issue learning from the the best and missed KEITHS videos hope he will come back. THANKS brother for sharing cheeeeeers

[@ratbag359]

Commenting at 5:47 I was starting to doupt my target of abs ground. But i was on the right track :) Great video.

[@ratbag359]

on a side note is there terminating resistors in the abs module?

[@PHxNiteRider]

You definitely called it at the beginning!

[@zxtenn]

Glad i subbed, you're amazing, Keith is a funny online onlooker and smart as well.

[@Vlda2393]

5:00 When you disconnected ABS module you also removed a terminating resistor on it!

[@jeremybrewer3289]

This is actually very common. Almost always wrecked cars. G04 is major ground. Body shops always paint over it which cause a high resistance ground. Another that will blow your mind is newer Mazda headlamps are on the can network. So any water or moisture in headlight housing will cause a short on the can bus. Causing havoc. I cant speak for every brand (I am a Mazda Tech), but CAN possible issues are the easiest to find with a break out box at DLC and if shorted together meaning 2.5H 2.5L, pull the CAN network diagram and start unplugging modules. 7th gen Mazda which are like the CX30 and 2019+ Mazda 3 have multiple CAN networks. Which in a sense makes it easier. Pick the CAN network that has all the codes.

[@charlesbartholomew2910]

Great stuff and excellent troubleshooting and diagnosis. Keep up the great work!

[@notyou6950]

Great job. You got a "Atta Boy! For this!

[@russellstephan6844]

Even without an oscilloscope, 90% of all electrical problems could be resolved just by checking powers and grounds with scopes-on-ropes followed up with full current load testing. It's these sleuthing videos which really get my juices flowing... Most everything else is simple mechanical parts swapping. Two thumbs up on an other highly interesting case study. FYI, I photo documented my idea for the DIY Power Probe tool. It's on Facebook, however. Search Facebook for "Russell Stephan Power Probe" and the photo album should pop up first on the search results. Be sure to follow the Google Docs link in some of the photo annotations for the text write-up of the how's, why's, and what-not's of the design.

[@Ram14250]

You are the best Ivan! Great work!

[@CANlectric]

When abs had the fault of low batt voltage, I suspected the bad ground. Nice diagnosis!

[@bryanwaisanen8078]

Wow very cool Diag. I wonder how many parts cannons have been fired over the years because of a bad ground. Great vid.

[@guyconnell2250]

Some years ago, when CAN Bus and modules started becoming the standard, I asked what the "shelf life" of these components and systems was going to be. We are finding out now. I had a rear door power lock that wouldn't work from the driver seat in my 2006 Ram. It was easy to diagnose. I did eventually replace the harness in the B pillar going to that door but again, easy to diagnose. It makes me very skeptical about buying a new car. After the 36 mo or 36K miles, you are screwed.

[@Otagner]

I agree, quality aftermarket warranties are almost becoming a necessity!

[@theAGanimators]

I would imagine there's a clause in those warranties that excludes troubleshooting time to find previous screwups. I've bought such warranties twice in my life and both times the cost of the warranty exceeded the value of the one repair it happened to cover.

[@Otagner]

@@theAGanimators I agree, there probably is, but I was mainly talking about for electronic failures like Guy was commenting on. It also depends on how reliable the vehicle you're buying is known to be whether it would be worth it or not. One module failure can easily get into the thousands depending on where and what is is.

[@paulstaf]

Kia, 10YR 100K Mile warranty!

[@christophervanzetta]

@@paulstaf For the original owner only and still has alot of catches ;)

[@agmc4me]

I had a feeling this was a wrecked car when you showed all the new parts in the first video. Awesome diagnosis