This channel should also be mandatory for customers and DIY'ers. I like that he explains both point of views (Tech's point of view and customer's point of view).
He said we got lucky on our first try. I beg to differ. This guy is so sharp and does his troubleshooting methodically so luck doesn’t seem to be an accurate description of this example. Wish he was in our neighborhood. Whatever he charges, it’s worth it. A great, honest technician is hard to find.
Not just sharp, he has decades of experience, so has seen a bunch of things before. Every problem you spent time to solve in the past, is a problem you will solve quickly in the future. Which is why experience is priceless...
@@ahypernova He said the made a logical guess, as he chose the module that does actually move when you move the steering where, so anything that moves has mechanical wear and is the mostly like culprit when something fails, vs a static module like ABS or other sensor modules which only receive and process signals, but are electronic only, no mechanical sensor. The Steering Angle Module probably has a potentiometer inside it that wears out over time...
I work at dealership. They didn’t even really try. Flat rate hell and a NOT quality oriented dealership. Good dealerships are willing to pay “ shop time” to help the techs get paid for some of the diagnostic time and as a result techs learn and customers are satisfied more often. The system is highly flawed but really it is management that created the system who are flawed. I worked at a Mercedes Dealership in the 1980s when car complexity was really advancing. Oh and we had no OBD2 back then. Mechanical ,analog ,and some relatively primitive digital back then.
The CAN has an industrial application called CANBUS. The machines we sell operate using it. I have struggled trying to understand it. This video is a tutorial all plant electricians should watch. I'm the President of our company and all of our techs will be watching this. You are amazing.
It’s a simple series circuit design. One sensor or system fails it cascades the rest of the system. Although it shouldn’t it does because these manufacturers want you to have to bring it in the shop. A simple scan tool should be able to determine which part of the system has failed. But again they don’t design it that way because they want their customers to junk a perfectly fine vehicle or trade it for a new one. They should all be sued.
Ahmed, you are a good human. Your tone of voice did not trash the dealership mechanics. You understood scenarios where they could have unintentionally failed.
@@subtegral Except that is not what happened at all. Lets say it took 10 hours to fix this issue. You seriously think ANYONE would be willing to pay $1,500 to $2,000 or more to fix this issue on a 14 year old Corolla...?
It's because Ahmed has worked in dealerships and he knows how things go there. Dealerships techs are under pressure to turn cars out as quickly as possible and flag as many hours as possible.
@@ghostwrench2292 Except none of that is actually true. Repairs have a book time, which is often far less than what the job actually takes. No one is "flagging" any hours, as mechanics best case scenario get to bill actual time, as finishing jobs under book time is very hard unless you have a lot of experience, and even then it is tough.
My 2009 Corolla was misdiagnosed by the Toyota dealer as well as another reputed private mechanic. Both said I need to replace the whole steering assembly. While a local startup mechanic immediately recognized the failure of clock spring due to his previous experience. I did write a letter to Toyota Canada to update repair procedures/ train dealers. One manager from Toyota called me to know the issue in detail. Thank you TCCN for another great video 🙏👏
They are not really mechanics, more like technicians. And I’d guess dealers and the manufacturers would prefer/want the tech to replace, rather than fix the problems.
You can't excuse the dealership for this situation. I'm an old school mechanic, trained on the Australian apprenticeship model. Any dealership I worked for was responsible for training me on how to service and repair their vehicles. This was in turn a part of their commitment to looking after their customers (remember, they buy the cars, and without them none of us would have 'bread on the table'. If the dealership can't be bothered teaching their mechanics then why should the customer display any brand/dealership loyalty. Great explanation of the CAN system and it's functions, probably the best I've seen on UA-cam. Keep up the good work.
I'm a retired Engineer and a curious person by nature. Perhaps, from a diagnostic perspective, some technicians don't have a good conceptual understanding of the CAN network and how it interoperates with the various components. If that is the case, then it becomes a hit-and-miss situation where there is a reliance on luck when trying to identify the problem. If the problem is persistent, then a component level diagnostic approach of disconnecting and reconnecting components should help to identify the problem area. Calm and rational thinking is the way to go, but human nature being what it is, this can be challenging. Thank you for such an excellent video!
I am waiting for him to talk about the massive recall on the 2022 - 2023 Tundras. Toyota is forcing the dealer's mechanics to reconstruct the 2024 Tundra engines instead of sending the dealers a brand new engine. And the reconstruction is not going too well..
In my 30+ years with Lexus, I've seen the steering angle sensor fail multiple times. Usually you just get a lost communication code, it's rare to have it take down the network. Thanks for the video!
As an aircraft avionics technician for 32 years, you have to learn to troubleshoot a problem. Take all the available data and run through all the scenarios that would cause each issue (if there are more than one). There is always a common cause. The hard part is figuring that out. Not all technicians/mechanics are created equal. Remember that.
As an added note, on a modern military aircraft your vehicle CANBUS is sort of equivalent to a MIL-STD-1553 Avionics Data Bus. You have to know your stuff and have the proper test equipment to troubleshoot. Just guessing is not the way to go.
@@ramdodgetruck The air filter is a separate issue and he was not paid to check that. He had to clean the throttle body because most modern cars when you disconnect the battery the idle goes crazy trying to re-adjust to the throttle body which by then it is not as when it was new, and so the computer is using the default settings on a very different throttle body from when it was new. He could not give the car back to the customer with the issue fixed but also with new issue which could easily be fixed, and that it was caused by the repair (it cannot be avoided). this is a certified hood classic
One minute in...that looks like a CAN bus issue. Had a similar issue on my 09 Corolla about a year ago. It took me about 2 hours with a scope on the CAN to track it down to a bad Steering Angle Sensor that was pulling down the entire CAN. Unplugged the SAS and the network and everything came back. Just had a traction control light until I replaced the $400+ SAS. Toyota has a great strategy when the CAN network goes down...the PCM will still run the engine and you can drive the vehicle. Love it. Edit: Well, 17 mins in, and I guess I was right on the money. It must be a common issue on these. I was trying to get to the junction connector for the CAN which was not where Alldata said it was so I started with other modules before the SAS so it took me longer but I got to it in about 1.5 - 2 hours.
Ahmed, you're the 🐐 of Toyota whispering. All of us guys working on these cars at home are forever in your debt. Thankyou for sharing your knowledge with us 😊
This is BY FAR my favorite video you've ever posted. I absolutely love electronics diagnosis, and this was an absolute blast to watch. I laughed out loud when you measured the 9.9K Ohms and said "yep it isn't shorted"
Top notch diagnostics! Had a similar experience with dealership. Intermittent problem setting air bag light on. Dealership could not figure it out, so their diagnosis was it needed a part that was no longer available, so they could not fix the car. Turns out the problem was a bad connection on seat belt sensor. Dealership didn't want to spend the diagnostic time to figure this out. They lost a long time faithful customer, and in turn, sales of a new car purchase two weeks later.
Except, as he noted, finding intermittent problems is very time consuming, and very few people are willing to pay hundreds, or even thousands of dollars in diagnostic fees and time to find them. Like this car, if it took 24 hours to find it at $150 an hour, would you pay $3600 to get this Corolla fixed...?
The cheap yellow air bag senor connectors move a little. Fine dust builds up on the exposed contact metal where there is no connection. The connector contacts move just a little on top of the dust. Disconnect the connectors, spray with electrical contact cleaner, let dry, reconnect, put zip tie on connector to not allow movement. Worked for my car.
@@pedlpower They were clueless. I paid them two hours diagnostic time, they couldn't find the problem, so to cover their labor cost they said the problem was a part no longer available...They couldn't fix the car. If they had spent part of that two hours and reached under the seat to check the connection on the seat belt harness (which is one of the first things t check) they would've fixed it (as this was the fix) So to answer your misguided question. You're question is moot!
Man I wish you lived in my neighborhood. You fixed my 06 Lexus Rx 330. The adapted head lights stopped working and you said clean the lights, I did and they are working. Thanks love your videos.
Three Toyotas still driving and three gone down the road, we no longer use Toyota dealer shops. At the purchase of a 2017 Camry, the sales person offered first oil change on dealer - bait and switch, (we are 3.5 hrs. away), arrive, oh no we do not do free oil change, but we will do a 18 point check along with an oil change for $$$$. We drove back home. So it is so refreshing to hear you talk Toyota in an honest way - May God give you a long life and the desire to keep producing these videos.
Why would you drive 3.5 hours for an oil change? The money you would spend in gas and wear and tear on the car just to get there would work out to nearly as much as the value of the service even if it had been free.
@@GixxerRider1991 We had other obligations in that town at that time - making us frequent visitors. You are correct in that oil change hired raises the cost beyond it's value.
Same thing happened to me at a Chevy dealer. It sat for months while they diagnosed it. First blamed me for aftermarket wiring and devices. Which were dealer added options they installed. They threw in a new bcm without further diagnosis. Fried that one too. Months later they found a break in the wiring and put in a new wiring harness. In the mean time it sat at the back of their lot and was broken into. If CCN was working there that never would have happened. Good job dude. This is a master class in diagnostics.
That wasn’t ‘luck’ that was EXPERIENCE and EXACTLY why I don’t mind paying a diag fee for the hour if you find it in ten minutes. You’re paying for the EXPERIENCE! Great job once again brother. God bless~
You are a no nonsense investigator. I really enjoy the way you approach a problem, and then correct it. We the public rely on professionals to do the same. ( sadly get it done fast ends with shoddy results) Thank you for your time and energy in making these video’s .
as an aftermarket electronics tech myself, i am SUPER glad that you are not blaming the remote start right away! so many dealers in my area just point the finger as soon as they see anything installed. 9/10 times we'll unplug the offending item so they can diagnose without blaming us and it turns out to be something factory that failed (im looking at you nissan!) I will also say that i learned something new today that i will hopefully get to use in the future! i run into can issues sometimes on vehicles (may not apply to non-toyota vehicles) and this is very valuable information. thank you!
Being an old man, I figured it was a poor ground. Saying this, I wouldn't have know WHERE. Great video, Dr Ahmed. You made it easy to understand. Thank you! 👍🇺🇸
Highly recommend getting repairs done at Car Care Nut’s shop. Accurate assessments of problems, excellent repairs, all from one of the nicest people you’ll ever know.
FYI they make a OBD2 breakout box, which connects to the OBD2 connector, and makes it 1000x easier to take these readings without trying to find and touch tiny pins. The break out box gives you a little plug for each pin and starts at around $30....
The dealership is the only one with this breakout box because it is mandatory for the dealership to have it and the manufacturer pays for the dealership to have it. A neighborhood repair shop is not going to have this tool.
@@peterromano1911 The OBD2 port is standard equipment in basically all cars. Hence, you don't have to buy a manufacturer specific box. A generic box can be bought for $30 which will work on any car with an OBD2 port...
@@redbaron6805 What AMD did is more than enough to test the CAN network. No breakout box is needed today so save your money. Technicians need to learn basic electronics, networking and how to read and understand schematics. They are no longer just a mechanic, they are Electronic Technicians.
From A brother on the Honda side, great video and example of diagnostic. Keep doing your thing and letting the general public know that there are still techs out here who care about their craft, reputation and haven't lost sight of the fact that we're here for the customer.
I recently discovered your channel while I was deciding to get a 2024 Tacoma. The way you educate us on cars is extraordinary and you got me hooked onto your channel. Keep doing what you’re doing and I can’t speak for everyone else, but you got likes and views from me for every video you post!
I watch every new video you do and am never disappointed. I knew OF the Can bus didn't have a clue as to HOW it worked. Now I do. Thanks my friend for educating and entertaining us at the same time.
They are not rare as independent mechanics, you just have to find them. They are rare working for dealerships, as dealerships and manufacturers keep cutting the hours they pay for repairs to below actual time. Book time on repair X is 3 hours, but takes 6 hours. So, as a mechanic, you spend six hours to do a job you will get paid 3 hours to do. How many people will accept that long term? Hence, the churn and revolving door of mechanics at dealerships.
Got to be careful with statements like that, as AMD worked for a dealership for decades before opening up his own shop. Are you claiming he was just a fitter while working as a mechanic at a dealership...?
Awesome video! I doubt most dealerships have mechanics with your depth of expertise. When Toyota/Lexus has an issue they can't figure out, I hope they have you on speed dial as an expert consultant.
Ahmed’s expertise is the reason I drove 13 1/2 hours from NY to his shop to get my 2017 Toyota Tacoma serviced! Best decision I ever made and will continue to make when it comes to my vehicle.
I work at a small collision and paintless dent repair shop here in California and although we don't do mechanical repairs (aside from personal vehicles), I find myself recommending your channel to customers with Toyota's that have more than just a cosmetic interest. Some are already aware of you. Very cool. And, luckily, there is a competent technician just around the corner that I recommend going to.
First time viewing your video, it was suggested to me by UA-cam. I understand why you have a over a 1 million subscribers. You explain things in a very patient and clear way. I am a new subscriber as of this moment looking forward to more videos.
I've seen South Main Auto lately using the 120 ohm as a start to find out network issues. Plus I remember a '19 truck in his channel. The dealer quoted something like $3,800 in modules when it was a main chassis ground. Unfortunately dealer credibility has gone downhill overall.
Dealers have NEVER had credibility. I recall people complaining about dealership incompetence 60 years ago. Nothing has changed. The dealership business model has always been "It's time to buy a new car!"
Steve Overbeck did auto care talk radio in Cincinnati for over 30 years. He always said, over and over again, "It's diagnostics that fixes your car." Great video.
excellent diagnosis as always. Now you know why I drive very old toyotas, I am a mechanic and generally stay way below 2010. Older toyotas have problems of course but are way less complex.
Mechanics themselves exemplify the magnitude of the problem with new cars that have become too complex to be profitably and quickly diagnosed and repaired (see my text above).
Oh my gosh, I was not expecting this video to go this way 🔥. I have been looking into CAN buses and the protocol itself to try and work on cars that have faults in these areas (I'm studying to become an Electrical Engineering Technician) and this helped me conceptualize how I can go about working in these areas. Thank You Mr Care Nut 😂
2:44 Electrical problems always appear for two reasons: No contact in the right place or contact in the wrong place. Even if some computer unit is faulty, it has the same problems, either something is shorted, or there is a break in the conductor somewhere. :)
I also watch Rainman Ray because he is good at diagnosis and common sense. Eric O is 1 hour from my house and i may have him check over my Toyota some day.
Troubleshooting/debugging is a crucial skill. If you can identify a smaller region where the problem appears, then you can save so much time. For example: coding/programming
Professor Car Nut, great pod cast. Awesome information. I learned a lot from this lesson. Thank you very much . Can’t wait for the next lesson. God bless you and your family.
He’s right about dealers mechanics not wanting to spend the time to diagnose tricky problems. They don’t make as much money on them as they do with oil changes and parts swapping on obviously bad parts. Dealers need to change their processes to attract good diagnosticians.
Somehow he should pay attention to his diet, we need him to ve around for many more years! Just look at him filling all that void space by the car door… lol.
He certainly is a very good mechanic. I can assure you that there are many good, honest mechanics out there - I have worked with them. It's just a matter of finding them.
Label this one “Brilliant “!……..so much background knowledge……..if todays cars have grown more complicated, there’re is little hope for us DIYers I’m afraid……..I checked……only 12 1/2 hour drive to Ahmed…….would be worth it! As usual an enthralling Video………Heartfelt Thanks……You need to be proud…….
AMD, Your explanation of the chronic problems generated by the dealership compensation model is worth its weight in gold. If I ever get a 2010 Corolla of my own, I am heading straight to your shop!!!!!🤩🤩
If this was a 1970s Toyota, I’d be looking for the old school “glass barrel” fuse with a hairline crack in the metal fuse material. Apparently this generation of fuses was not well engineered for the high temperatures seen in the Southern US. Fuses sourced from US Automakers would have some bends in the metal fuse element to allow for thermal expansion. It tools a few years for Toyota to catch up.
Ahmed, you r being gracious towards the dealership technicians. They need to be trained to troubleshoot canbus issues. Holding the customer's car for two weeks, then having the customer remove his aftermarket components are totally unacceptable. You are a very competent mastertech.
I think he is very measured and diplomatic in what he says about dealerships/garages. Through many videos on the subject, Ahmed has done a very good job in educating us about about the core flaws in the dealership service model. Far too often, paying mechanics by piece work does not serve customer interests.
I trust dealerships as much as the aftermarket mechanic. We pay for their mistakes. Finding a gem of a mechanic like you is really, really, really difficult.
I currently own a 2020 Camry XSE AWD and I've poked around the engine bay and have been impressed with the engineering. Everything seems to be designed to be reliable and easy to maintain, even on such a complicated car. It's a shame a company like Toyota that spends the time to design cars to be fixed as simply as possible are derailed by dealerships that don't properly train their techs.
I know I wasnt the only one shouting "Steering angle sensor!" when he asked lol...This is like being in a CAN BUS 101 class. Its why I love this channel 🙂 I cant tell you how much I hate any shop that uses the old "its the aftermarket alarm" trick...uugh. Just tell me you couldnt figure it out and I'll have more respect and business for you.
Short due to friction ,you have applied this logic here Dealers don’t want to spend lot of time on a old models and come with a large bill The owner might not accept The car would have been parked idle for 2 weeks and returned The dealers will concentrate newer models on which brings in money Further , it is not advisable to take a car 14 years old to a dealer There are smart private mechanics as this gentle men who can resolve the issue if you are lucky
@@mikep509 Not sure why people keep repeating this fallacy. Cars that were mostly mechanical broke all the time, and were considered worn out and scrap metal at 100k miles. Modern cars can easily go 300k miles plus with scheduled maintenance, and are more reliable than ever. Electronics wear out far less than mechanical parts, every single time.
Misses the point that cars today are 100x safer, last several times longer, and the old mechanical cars broke down constantly and were considered worn out and scrap metal at 100k miles...
@@redbaron6805 yes the modern cars are safer agreed there... plus fuel efficiency is a big factor as well.. I'm more concerned about any accident that may occur and repair costs of a tech heavy car opposed to a less tech heavy one... corrosion is also a concern, as I live in the beautiful north east American rust belt...
@@mikep509 Accidents are usually an insurance issue, not a maintenance issue. Cars today are designed to destroy themselves to protect the occupants, which is why they now have structures designed to collapse and crumple in collisions, absorbing the energy to protect the passengers. Add in multiple airbags, automatic emergency braking, skid control, ABS brakes, seatbelt pretensioners and interiors designed to minimize injuries, and the safety isn't even close. You can't protect the car and the passengers at the same time, one has to be sacrificed to save the other. This is why cars which got 5 stars in crash testing decades ago don't even pass today. Corrosion is a separate issue, although modern cars are much better at resisting corrosion, but obviously not impervious to corrosion.
I really like these videos when you do the "clinical case study" type thing where you walk through the mindset, advice, and troubleshooting on the harder problems. I don't do a lot of DIY stuff on my car, but it's really helpful to have this kind of information in your pocket if you need it. You can find a lot of "how-to" videos on youtube, but they are step by step for replacing things, not the harder job, which is troubleshooting.
Really cool to hear about the CAN system. Think that's what happened with my Civic where a chewed wire had all the ABS and steering system warnings going off. So nice to see a proper fix being done for this nice little Corolla after it waited so long at the dealer.
Dear Boss You are a great teacher and caring Doctor - I have been watching your videos carefully and I can see a master and genius when you put all the the trouble on the table and then pick the weakest link. Thank you professor
I'm glad to hear you summarize 99% of the issues in our industry by the 2 minute mark. Many UA-cam channels can spend days on a repair for content, while shops are paying a mechanic 1.0 to sort out this issue...in most cases and are terrified to call a customer for more time and get screamed at for charging more. It's a tuff business some times. Being able to spend the time and still put food on the table is a HUGE plus. Oh and nice work.
@@milfordcivic6755 because at times, an alternator under load can produce electrical issues. There can be intermittent issues due to bad diodes or armature inside the alternator. We’ve seen this in our shop many times and this is where we start along with checking grounds. Many vehicles can have green corrosion at the grounds over time. We just look at this as a process before we take the next steps or steps on the elimination process of electrical diagnosis.
@@jamram9924good advice. I had a 07 Chevy Silverado. All kinds of electrical issues. Dealer couldn’t isolate it as it was intermittent. It drove me nuts until it finally completely failed at 75,000 miles. It was the main grounding cable.
Yeah, I had an accord that died during startup. One of the diodes of the alternator was bad and was disrupting the signal to the the CYP sensor on the distributor. Got a new alternator and started right up
@@tsurutuneado5981 that’s one of the issues with that generation of Honda Accord. This engine has no cam sensor but uses the distributor to monitor cam shaft signals/movement. I experienced the same symptoms with a remanufactured alternator ended up with an intermittent failing diode.
Learned about CAN when I heard about theft by hacking into the network and making subsystems subvert security using relay attacks. I'm an IT systems architect and engineer so this stuff is right up my alley although I'm literally an illiterate on car repair. Logic is the ONLY way. Question--we have OBD2 applications that can read codes....WHY can't there be a specific tool or program to diagnose CAN issues? Systems are complex enough now and with AI I don't understand why the computer can't have some systems in place JUST TO keep tabs on things and communicate discrepancies. I honestly think the OBD2 port is antiquated but a necessary "Back door". All of that information should be presentable on the infotainment system. Stop running interference for the dealership. I get the time aspect and the fact they need to get paid....but there needs to be a better way. Thank you for cleaning the engine at the end.
Let me take a stab from business point of view. Adding this feature to the CAN is money, these problems are edge cases (car theft aside), the manufacturer at the end of the day will pass the R&D costs and parts to the consumer. The general consumer will not really get that and won't be happy. I am talking other people not viewing CarCareNut, we are different breed. I am also from the tech industry, even the computer motherboard doesn't have diagnostics for the power capacitors.
Perhaps you should create that tool for the public and mechanic to use. You can really make good $$$ doing it. A diagnostic tool to figure out which part(s) have problem.
I used to work in a software company who tested these Can Bus systems for vulnerabilities. They can get very complicated. I can only imagine how complicated they are in the cars made in 2020s
That question misses a lot of what is going on here. The CAN system DOES have diagnostics and redundancy checks, but if a module fails and shorts out the network itself, the diagnostic network goes down. You can have the most advanced AI computer in the world, but if the network cable connecting it to the outside world is damaged, it can't communicate nor diagnose anything. As he noted in the video, if you connect a OBD2 scanner and the network is down, it DOES tell you what the problem is, something is shorting out the network, so you need to disconnect the modules to figure out which one is causing the problem. Also, OBD2 is already obsolete and being replaced by OBD-III...
Then Design a system then for the computer to diagnose it. Intermittent electrical issues can be VERY time consuming. Would the customer be willing to agree to an open checkbook for a diagnosis? I spent 16 hours chasing down an intermittent can issue. So $3k to find the issue in the end. Is the customer going to approve that?
I had a similar problem with Avensis (UK, 2001). RPM and speed gauge hands moved or not moved absolutely randomly even when car was stationary. I changed three electrolytic condensers for like 50 cents and it is perfect 🙂
Just a short note, because you've said the majority of folks on this channel are do it yourselfers, and that might be true, but I suspect there's a lot of people like me… Who aren't really do it yourself or but they just love your storytelling and they enjoy knowledge. I feel like watching this channel makes me a bettermore informed car owner. I'm also a scientist, and diagnosing a car isn't that much different than diagnosing an economy, a circulatory system, or whatever… We're searching for cause-and-effect and trying to separate the spurious correlation from the causal correlation. And it's exceptionally difficult sometimes
My first guess was something ECM related but I really didn't have much understanding of the CAN. Thanks for explaining it in a way that demystifies it!
Toyota should give this guy an award
i could not have said it any better.......he is sharp
Yes, it would be a fair and well-deserved reward for his excellent work and the very positive image he brings to the Toyota/Lexus brands.
Yes, Tokyo Nobel Prize 🏆 for Toyota technician !😂
for What exactly? ...
On top of the Gold UA-cam award he received earlier
IMHO this channel should be mandatory viewing for all Lexus/Toyota mechanics. Will help to increase repair standards from average to excellent.
This guy should be the litmus test of receiving Toyota/Lexus master technician title.
This channel should also be mandatory for customers and DIY'ers. I like that he explains both point of views (Tech's point of view and customer's point of view).
He should be working in Training for Toyota but i believe he’ll have better outreach with UA-cam
He should be the final boss to getting the Toyota master tech certification.
But but Toyotas never break down 😂
He said we got lucky on our first try. I beg to differ. This guy is so sharp and does his troubleshooting methodically so luck doesn’t seem to be an accurate description of this example. Wish he was in our neighborhood. Whatever he charges, it’s worth it. A great, honest technician is hard to find.
Not just sharp, he has decades of experience, so has seen a bunch of things before. Every problem you spent time to solve in the past, is a problem you will solve quickly in the future.
Which is why experience is priceless...
By "lucky" I think he meant that it didn't get to harder to replace components, luckily.
I actually drove from Oklahoma to his shop to have him install a transmission cooler on our 2021 Tundra TRD Pro. Worth it!!
Real pros are always humble. Ahmed is surely the one.
@@ahypernova He said the made a logical guess, as he chose the module that does actually move when you move the steering where, so anything that moves has mechanical wear and is the mostly like culprit when something fails, vs a static module like ABS or other sensor modules which only receive and process signals, but are electronic only, no mechanical sensor.
The Steering Angle Module probably has a potentiometer inside it that wears out over time...
No luck involved, just knowledge backed up with hard earned common sense. Keep up the good work.
I work at dealership. They didn’t even really try. Flat rate hell and a NOT quality oriented dealership. Good dealerships are willing to pay “ shop time” to help the techs get paid for some of the diagnostic time and as a result techs learn and customers are satisfied more often. The system is highly flawed but really it is management that created the system who are flawed. I worked at a Mercedes Dealership in the 1980s when car complexity was really advancing. Oh and we had no OBD2 back then. Mechanical ,analog ,and some relatively primitive digital back then.
Plse do more CAN and general wiring diagnostic videos!! So interesting...
I agree with you
The CAN has an industrial application called CANBUS. The machines we sell operate using it. I have struggled trying to understand it. This video is a tutorial all plant electricians should watch. I'm the President of our company and all of our techs will be watching this. You are amazing.
It’s a simple series circuit design. One sensor or system fails it cascades the rest of the system. Although it shouldn’t it does because these manufacturers want you to have to bring it in the shop. A simple scan tool should be able to determine which part of the system has failed. But again they don’t design it that way because they want their customers to junk a perfectly fine vehicle or trade it for a new one. They should all be sued.
Ahmed, you are a good human. Your tone of voice did not trash the dealership mechanics. You understood scenarios where they could have unintentionally failed.
The real truth is they intentionally failed.
@@subtegral Except that is not what happened at all. Lets say it took 10 hours to fix this issue. You seriously think ANYONE would be willing to pay $1,500 to $2,000 or more to fix this issue on a 14 year old Corolla...?
It's because Ahmed has worked in dealerships and he knows how things go there. Dealerships techs are under pressure to turn cars out as quickly as possible and flag as many hours as possible.
He's a class act! 👍
@@ghostwrench2292 Except none of that is actually true. Repairs have a book time, which is often far less than what the job actually takes.
No one is "flagging" any hours, as mechanics best case scenario get to bill actual time, as finishing jobs under book time is very hard unless you have a lot of experience, and even then it is tough.
My 2009 Corolla was misdiagnosed by the Toyota dealer as well as another reputed private mechanic. Both said I need to replace the whole steering assembly. While a local startup mechanic immediately recognized the failure of clock spring due to his previous experience. I did write a letter to Toyota Canada to update repair procedures/ train dealers. One manager from Toyota called me to know the issue in detail. Thank you TCCN for another great video 🙏👏
I think a lot of dealer mechanics now are more parts replacers than actual mechanics.
The dealer charges $150 per hour and pays the mechanic $25 hourly on warranty jobs that pay 5 hours but take 8 to complete LOL
They are not really mechanics, more like technicians. And I’d guess dealers and the manufacturers would prefer/want the tech to replace, rather than fix the problems.
They are straight outta high school 😂
@@melvingibson4525 Which causes the labor and knowledge gaps.
Car Diagnosticians.... They find what need, should, and not be changed yet...
You can't excuse the dealership for this situation. I'm an old school mechanic, trained on the Australian apprenticeship model. Any dealership I worked for was responsible for training me on how to service and repair their vehicles. This was in turn a part of their commitment to looking after their customers (remember, they buy the cars, and without them none of us would have 'bread on the table'. If the dealership can't be bothered teaching their mechanics then why should the customer display any brand/dealership loyalty.
Great explanation of the CAN system and it's functions, probably the best I've seen on UA-cam. Keep up the good work.
I'm a retired Engineer and a curious person by nature. Perhaps, from a diagnostic perspective, some technicians don't have a good conceptual understanding of the CAN network and how it interoperates with the various components. If that is the case, then it becomes a hit-and-miss situation where there is a reliance on luck when trying to identify the problem. If the problem is persistent, then a component level diagnostic approach of disconnecting and reconnecting components should help to identify the problem area. Calm and rational thinking is the way to go, but human nature being what it is, this can be challenging. Thank you for such an excellent video!
Some technicians, when they see CAN, they can't.
@@briank10101 Good one!😉
It's simple, the techs get paid to unscrew and no more.
Real diagnosing requieres time, which the dealer doesn't pay.
I am waiting for him to talk about the massive recall on the 2022 - 2023 Tundras.
Toyota is forcing the dealer's mechanics to reconstruct the 2024 Tundra engines instead of sending the dealers a brand new engine.
And the reconstruction is not going too well..
calm and rational are the key words. its hard to troubleshoot something you're not fully experienced with.
In my 30+ years with Lexus, I've seen the steering angle sensor fail multiple times. Usually you just get a lost communication code, it's rare to have it take down the network. Thanks for the video!
As an aircraft avionics technician for 32 years, you have to learn to troubleshoot a problem. Take all the available data and run through all the scenarios that would cause each issue (if there are more than one). There is always a common cause. The hard part is figuring that out. Not all technicians/mechanics are created equal. Remember that.
As an added note, on a modern military aircraft your vehicle CANBUS is sort of equivalent to a MIL-STD-1553 Avionics Data Bus. You have to know your stuff and have the proper test equipment to troubleshoot. Just guessing is not the way to go.
Dang, and here I am on ARINC 429 & 664 😂
You said a mouth full there...diagnosis separates the real "technicians" from the parts changers.
Are aircraft technicians paid flat rate?
@@mikalcobbs9402 No, we are not paid flat rate. Most of us are paid hourly, whether we are AVNX, Systems or Structures; Scheduled and Unscheduled.
I really love how he always cleans the engine bay.
That shows he really cares for the car. Makes me respect this guy even more!
Loved the video but was surprised he didn't check the air filter after cleaning the throttle body.
@@ramdodgetruck
The air filter is a separate issue and he was not paid to check that. He had to clean the throttle body because most modern cars when you disconnect the battery the idle goes crazy trying to re-adjust to the throttle body which by then it is not as when it was new, and so the computer is using the default settings on a very different throttle body from when it was new. He could not give the car back to the customer with the issue fixed but also with new issue which could easily be fixed, and that it was caused by the repair (it cannot be avoided).
this is a certified hood classic
One minute in...that looks like a CAN bus issue. Had a similar issue on my 09 Corolla about a year ago. It took me about 2 hours with a scope on the CAN to track it down to a bad Steering Angle Sensor that was pulling down the entire CAN. Unplugged the SAS and the network and everything came back. Just had a traction control light until I replaced the $400+ SAS. Toyota has a great strategy when the CAN network goes down...the PCM will still run the engine and you can drive the vehicle. Love it.
Edit: Well, 17 mins in, and I guess I was right on the money. It must be a common issue on these. I was trying to get to the junction connector for the CAN which was not where Alldata said it was so I started with other modules before the SAS so it took me longer but I got to it in about 1.5 - 2 hours.
Ahmed, you're the 🐐 of Toyota whispering. All of us guys working on these cars at home are forever in your debt. Thankyou for sharing your knowledge with us 😊
A possible case of the dealership just kicking the CAN down the road. lol. Very informative video.
Nice pun
@@FSM_Reviews Well spoken...and hilarious :)
Good one..lol
God bless you sir.
This is BY FAR my favorite video you've ever posted. I absolutely love electronics diagnosis, and this was an absolute blast to watch. I laughed out loud when you measured the 9.9K Ohms and said "yep it isn't shorted"
Top notch diagnostics! Had a similar experience with dealership. Intermittent problem setting air bag light on. Dealership could not figure it out, so their diagnosis was it needed a part that was no longer available, so they could not fix the car. Turns out the problem was a bad connection on seat belt sensor. Dealership didn't want to spend the diagnostic time to figure this out. They lost a long time faithful customer, and in turn, sales of a new car purchase two weeks later.
Except, as he noted, finding intermittent problems is very time consuming, and very few people are willing to pay hundreds, or even thousands of dollars in diagnostic fees and time to find them. Like this car, if it took 24 hours to find it at $150 an hour, would you pay $3600 to get this Corolla fixed...?
They didn't want to spend the diagnostic time or you didn't want to pay for the diagnostic time?
@@pedlpower Exactly....
The cheap yellow air bag senor connectors move a little.
Fine dust builds up on the exposed contact metal where there is no connection.
The connector contacts move just a little on top of the dust.
Disconnect the connectors, spray with electrical contact cleaner, let dry, reconnect, put zip tie on connector to not allow movement.
Worked for my car.
@@pedlpower They were clueless. I paid them two hours diagnostic time, they couldn't find the problem, so to cover their labor cost they said the problem was a part no longer available...They couldn't fix the car. If they had spent part of that two hours and reached under the seat to check the connection on the seat belt harness (which is one of the first things t check) they would've fixed it (as this was the fix) So to answer your misguided question. You're question is moot!
Man I wish you lived in my neighborhood. You fixed my 06 Lexus Rx 330. The adapted head lights stopped working and you said clean the lights, I did and they are working. Thanks love your videos.
Three Toyotas still driving and three gone down the road, we no longer use Toyota dealer shops. At the purchase of a 2017 Camry, the sales person offered first oil change on dealer - bait and switch, (we are 3.5 hrs. away), arrive, oh no we do not do free oil change, but we will do a 18 point check along with an oil change for $$$$. We drove back home. So it is so refreshing to hear you talk Toyota in an honest way - May God give you a long life and the desire to keep producing these videos.
Why would you drive 3.5 hours for an oil change? The money you would spend in gas and wear and tear on the car just to get there would work out to nearly as much as the value of the service even if it had been free.
@@GixxerRider1991 We had other obligations in that town at that time - making us frequent visitors. You are correct in that oil change hired raises the cost beyond it's value.
You should contact Toyota directly. That sounds like a dishonest dealer. Unfortunately, Toyota doesn't own or directly operate dealerships in the US.
Same thing happened to me at a Chevy dealer. It sat for months while they diagnosed it. First blamed me for aftermarket wiring and devices. Which were dealer added options they installed. They threw in a new bcm without further diagnosis. Fried that one too. Months later they found a break in the wiring and put in a new wiring harness. In the mean time it sat at the back of their lot and was broken into. If CCN was working there that never would have happened. Good job dude. This is a master class in diagnostics.
Sorry to hear your vehicle was broken into. I’ve had that happen and it is not a pleasant experience. I hope your vehicle is working well for you now.
It is such a pleasure to watch Ahmed systematically resolve these complex problems and to also dismantle and put everything back together again.
Please support this guy and watch the commercials you can always mute them .
I just let them play, and walk away when they are long.
I prefer to not see the ads some of the time, so I use Newpipe app when I don't crave seeing ads.
I make sure I like every single video of his. Hope he gets to 5 million subscribers soon.
No commercials when I watch 😊
I don't even own a Toyota. I have a Jeep lol.
That wasn’t ‘luck’ that was EXPERIENCE and EXACTLY why I don’t mind paying a diag fee for the hour if you find it in ten minutes. You’re paying for the EXPERIENCE! Great job once again brother.
God bless~
Your greatest gift is you attitude toward you job and life. We all learn from it. Great video as usual!
You are a no nonsense investigator.
I really enjoy the way you approach a problem, and then correct it.
We the public rely on professionals to do the same. ( sadly get it done fast ends with shoddy results)
Thank you for your time and energy in making these video’s .
I wish I had a human like you here in LA. My go to guy moved to Arizona and now I don't have a reliable mechanic. Good job once again.
as an aftermarket electronics tech myself, i am SUPER glad that you are not blaming the remote start right away! so many dealers in my area just point the finger as soon as they see anything installed. 9/10 times we'll unplug the offending item so they can diagnose without blaming us and it turns out to be something factory that failed (im looking at you nissan!) I will also say that i learned something new today that i will hopefully get to use in the future! i run into can issues sometimes on vehicles (may not apply to non-toyota vehicles) and this is very valuable information. thank you!
Not just you guys but the audio installers as well.
Thank you Sir for helping this old chevy guy to understand my wife's Toyota. And not be intimidated to do maintenance or repairs to it.
Being an old man, I figured it was a poor ground. Saying this, I wouldn't have know WHERE.
Great video, Dr Ahmed. You made it easy to understand. Thank you! 👍🇺🇸
Highly recommend getting repairs done at Car Care Nut’s shop. Accurate assessments of problems, excellent repairs, all from one of the nicest people you’ll ever know.
Don't you think anyone watching his videos already feels the same way?
I would but I’m in NJ, by the time I would get home it’ll be time for routine maintenance again.😂
@@Pohonesty I can’t speak for anyone or everyone. Many will never get to TCCN for repairs, much less meet him. I hope you do.
@@polishhotdog933 ha!
FYI they make a OBD2 breakout box, which connects to the OBD2 connector, and makes it 1000x easier to take these readings without trying to find and touch tiny pins. The break out box gives you a little plug for each pin and starts at around $30....
The dealership is the only one with this breakout box because it is mandatory for the dealership to have it and the manufacturer pays for the dealership to have it. A neighborhood repair shop is not going to have this tool.
@@peterromano1911 The OBD2 port is standard equipment in basically all cars. Hence, you don't have to buy a manufacturer specific box. A generic box can be bought for $30 which will work on any car with an OBD2 port...
@@redbaron6805 What AMD did is more than enough to test the CAN network. No breakout box is needed today so save your money. Technicians need to learn basic electronics, networking and how to read and understand schematics. They are no longer just a mechanic, they are Electronic Technicians.
@@peterromano1911 think you're having a comprehension issue.
@@jmwintennI got nothing for you that would be meaningful to you on your level.
Great diagnostic lesson. Your channel is keeping my 05 Tacoma running smoothly.
how is IT doing that ??
From A brother on the Honda side, great video and example of diagnostic. Keep doing your thing and letting the general public know that there are still techs out here who care about their craft, reputation and haven't lost sight of the fact that we're here for the customer.
I recently discovered your channel while I was deciding to get a 2024 Tacoma. The way you educate us on cars is extraordinary and you got me hooked onto your channel. Keep doing what you’re doing and I can’t speak for everyone else, but you got likes and views from me for every video you post!
I could watch Car Care Nut diagnose and fix stuff like this all day. So insightful.
I watch every new video you do and am never disappointed. I knew OF the Can bus didn't have a clue as to HOW it worked. Now I do. Thanks my friend for educating and entertaining us at the same time.
Main dealership have Fitters not Mechanic’s. People like AMD are a rare thing nowadays
They are not rare as independent mechanics, you just have to find them. They are rare working for dealerships, as dealerships and manufacturers keep cutting the hours they pay for repairs to below actual time.
Book time on repair X is 3 hours, but takes 6 hours. So, as a mechanic, you spend six hours to do a job you will get paid 3 hours to do.
How many people will accept that long term? Hence, the churn and revolving door of mechanics at dealerships.
@@redbaron6805 TY
Fitters and throwers.
debatable, that is...
Got to be careful with statements like that, as AMD worked for a dealership for decades before opening up his own shop.
Are you claiming he was just a fitter while working as a mechanic at a dealership...?
Well done sir, I love your channel, I have a 2020 camry se awd, iv learned so much from you, wish I lived closer to your shop. Have a great weekend!!
Awesome video!
I doubt most dealerships have mechanics with your depth of expertise.
When Toyota/Lexus has an issue they can't figure out, I hope they have you on speed dial as an expert consultant.
This is why I watch your videos. A knowledgeable guy in UA-cam who knows what he's doing and shares he's knowledge to everyone...freely. Thank you!
You are freakin amazing!! I love your intelligence, knowledge and step by step analysis.
Ahmed’s expertise is the reason I drove 13 1/2 hours from NY to his shop to get my 2017 Toyota Tacoma serviced!
Best decision I ever made and will continue to make when it comes to my vehicle.
Eric O with South Main Auto is so much closer and does quality work
I work at a small collision and paintless dent repair shop here in California and although we don't do mechanical repairs (aside from personal vehicles), I find myself recommending your channel to customers with Toyota's that have more than just a cosmetic interest. Some are already aware of you. Very cool. And, luckily, there is a competent technician just around the corner that I recommend going to.
Great video AMD !!!! Your skill and professionalism are admirable! 👍🏼
My respect for you keeps increasing after seeing how you approach situations like this. 🙏
First time viewing your video, it was suggested to me by UA-cam. I understand why you have a over a 1 million subscribers. You explain things in a very patient and clear way. I am a new subscriber as of this moment looking forward to more videos.
I've seen South Main Auto lately using the 120 ohm as a start to find out network issues.
Plus I remember a '19 truck in his channel. The dealer quoted something like $3,800 in modules when it was a main chassis ground. Unfortunately dealer credibility has gone downhill overall.
Another good UA-cam channel is Pine Hollow Auto Diagnostics.
@@kens32052
Plus their ongoing subtle feud over butt connectors. 😂 Like a cold war.
I saw Eric O’s diagnostic just this week. Amazing how these line up!
Dealers have NEVER had credibility. I recall people complaining about dealership incompetence 60 years ago. Nothing has changed. The dealership business model has always been "It's time to buy a new car!"
@@anwalt693
I've come across a few really good dealerships but mostly bad. It just seems even more difficult to find any good or even ok ones at all.
I love how one man can be passionate about his job. A dream to have a mechanic like this to your car
AMD IS the "G.O.A.T." I am a DIY guy, and always find CarCareNut videos entertaining. This one was educational too, for me. Great job!
Steve Overbeck did auto care talk radio in Cincinnati for over 30 years. He always said, over and over again, "It's diagnostics that fixes your car." Great video.
Great video ! There is a difference between knowledge and wisdom……..you have both 👍👍
excellent diagnosis as always. Now you know why I drive very old toyotas, I am a mechanic and generally stay way below 2010. Older toyotas have problems of course but are way less complex.
Mechanics themselves exemplify the magnitude of the problem with new cars that have become too complex to be profitably and quickly diagnosed and repaired (see my text above).
Aren’t they rusting away being that old ?
Using the car chime instead of a scope is a fantastic tip. Thank you so much!
Oh my gosh, I was not expecting this video to go this way 🔥. I have been looking into CAN buses and the protocol itself to try and work on cars that have faults in these areas (I'm studying to become an Electrical Engineering Technician) and this helped me conceptualize how I can go about working in these areas. Thank You Mr Care Nut 😂
Always an outstanding video and presentation.
2:44 Electrical problems always appear for two reasons: No contact in the right place or contact in the wrong place. Even if some computer unit is faulty, it has the same problems, either something is shorted, or there is a break in the conductor somewhere. :)
Back to common sense! you and Eric O from South Main Auto! are the only 2 I will watch these days! Thanks for the videos!
I also watch Rainman Ray because he is good at diagnosis and common sense. Eric O is 1 hour from my house and i may have him check over my Toyota some day.
It's a pleasure to watch a real professional work! Great video. Thanks!
Troubleshooting/debugging is a crucial skill.
If you can identify a smaller region where the problem appears, then you can save so much time.
For example: coding/programming
Brilliant video! Opens up the hidden world to the un-initiated - like myself. Thank you!
Professor Car Nut, great pod cast. Awesome information. I learned a lot from this lesson. Thank you very much . Can’t wait for the next lesson. God bless you and your family.
He’s right about dealers mechanics not wanting to spend the time to diagnose tricky problems. They don’t make as much money on them as they do with oil changes and parts swapping on obviously bad parts. Dealers need to change their processes to attract good diagnosticians.
What a great explainer on CAN systems. Thank you very much..
Taking that time to clean the engine bay, wow! You sir are amazing!
The Car Care is the best mechanic technician in our lifetime. HE IS STRICTLY THE BEST AND NOT JUST A PART REPLACER.
Somehow he should pay attention to his diet, we need him to ve around for many more years! Just look at him filling all that void space by the car door… lol.
He certainly is a very good mechanic. I can assure you that there are many good, honest mechanics out there - I have worked with them. It's just a matter of finding them.
that is debatable...
What about South Main Auto, Eric is very good
@@slalomking he does not get in many Toyota to His shop?
Label this one “Brilliant “!……..so much background knowledge……..if todays cars have grown more complicated, there’re is little hope for us DIYers I’m afraid……..I checked……only 12 1/2 hour drive to Ahmed…….would be worth it! As usual an enthralling Video………Heartfelt Thanks……You need to be proud…….
AMD, Your explanation of the chronic problems generated by the dealership compensation model is worth its weight in gold. If I ever get a 2010 Corolla of my own, I am heading straight to your shop!!!!!🤩🤩
Do you live in the region
I worked at 3 major dealerships, 2 GMC 1 Chrysler Jeep, electrical rebuilder and major rewire. I am so glad to be the hell out now! Good luck.
Wat is you are career path now?
Did you jump out of the skillet and into the fire, is the question
If this was a 1970s Toyota, I’d be looking for the old school “glass barrel” fuse with a hairline crack in the metal fuse material. Apparently this generation of fuses was not well engineered for the high temperatures seen in the Southern US. Fuses sourced from US Automakers would have some bends in the metal fuse element to allow for thermal expansion. It tools a few years for Toyota to catch up.
Ahmed, you r being gracious towards the dealership technicians. They need to be trained to troubleshoot canbus issues. Holding the customer's car for two weeks, then having the customer remove his aftermarket components are totally unacceptable. You are a very competent mastertech.
I think he is very measured and diplomatic in what he says about dealerships/garages. Through many videos on the subject, Ahmed has done a very good job in educating us about about the core flaws in the dealership service model. Far too often, paying mechanics by piece work does not serve customer interests.
@@rightlanehog3151 " Far too often, paying mechanics by piece work does not serve customer interests."
Yep.
50 years ago, we called these problems "a mechanic's nitemare ".job well done. Enjoyed the show Thank You
Thanks for all your work on these videos. Well done.
I trust dealerships as much as the aftermarket mechanic. We pay for their mistakes. Finding a gem of a mechanic like you is really, really, really difficult.
I've been watching your videos since we bought a 4runner last year. I do my own maintenance and you are a wealth of information!
I currently own a 2020 Camry XSE AWD and I've poked around the engine bay and have been impressed with the engineering. Everything seems to be designed to be reliable and easy to maintain, even on such a complicated car. It's a shame a company like Toyota that spends the time to design cars to be fixed as simply as possible are derailed by dealerships that don't properly train their techs.
What a fantastic lesson! Thank you for sharing your expertise.
I know I wasnt the only one shouting "Steering angle sensor!" when he asked lol...This is like being in a CAN BUS 101 class. Its why I love this channel 🙂
I cant tell you how much I hate any shop that uses the old "its the aftermarket alarm" trick...uugh. Just tell me you couldnt figure it out and I'll have more respect and business for you.
Short due to friction ,you have applied this logic here
Dealers don’t want to spend lot of time on a old models and come with a large bill
The owner might not accept
The car would have been parked idle for 2 weeks and returned
The dealers will concentrate newer models on which brings in money
Further , it is not advisable to take a car 14 years old to a dealer
There are smart private mechanics as this gentle men who can resolve the issue if you are lucky
Lol
All dealerships should watch your videos!!!
Great job finding the problem. Cars are too complicated today, I miss the old cars where everything was mechanical and fairly easy to fix yourself.
We should return to mechanical technology... I'm weary to buy a new car because of this...
@@mikep509 Not sure why people keep repeating this fallacy. Cars that were mostly mechanical broke all the time, and were considered worn out and scrap metal at 100k miles.
Modern cars can easily go 300k miles plus with scheduled maintenance, and are more reliable than ever.
Electronics wear out far less than mechanical parts, every single time.
Misses the point that cars today are 100x safer, last several times longer, and the old mechanical cars broke down constantly and were considered worn out and scrap metal at 100k miles...
@@redbaron6805 yes the modern cars are safer agreed there... plus fuel efficiency is a big factor as well.. I'm more concerned about any accident that may occur and repair costs of a tech heavy car opposed to a less tech heavy one... corrosion is also a concern, as I live in the beautiful north east American rust belt...
@@mikep509 Accidents are usually an insurance issue, not a maintenance issue.
Cars today are designed to destroy themselves to protect the occupants, which is why they now have structures designed to collapse and crumple in collisions, absorbing the energy to protect the passengers.
Add in multiple airbags, automatic emergency braking, skid control, ABS brakes, seatbelt pretensioners and interiors designed to minimize injuries, and the safety isn't even close.
You can't protect the car and the passengers at the same time, one has to be sacrificed to save the other.
This is why cars which got 5 stars in crash testing decades ago don't even pass today.
Corrosion is a separate issue, although modern cars are much better at resisting corrosion, but obviously not impervious to corrosion.
Wish we had more honest and good mechanic like you...great content
Remember ..."common sense"" ..ain't common...nicely done AMD !
I really like these videos when you do the "clinical case study" type thing where you walk through the mindset, advice, and troubleshooting on the harder problems. I don't do a lot of DIY stuff on my car, but it's really helpful to have this kind of information in your pocket if you need it. You can find a lot of "how-to" videos on youtube, but they are step by step for replacing things, not the harder job, which is troubleshooting.
Stunning expertise.
Really cool to hear about the CAN system. Think that's what happened with my Civic where a chewed wire had all the ABS and steering system warnings going off. So nice to see a proper fix being done for this nice little Corolla after it waited so long at the dealer.
This guy is the absolute most knowledgeable TOYOTA repairman that exists on this planet
LoL
He is a master of his art and its not even close. He thinks like a software engineer.
@@theholt2ic219 joker!
But Toyotas dont break down atleast according to reddit 🤔
Also see Toyota Maintenance, Peter is very sharp on his channel
Electrical problems are the most difficult to diagnose, hopefully will see my car in one of his videos.
Electrical problems are actually fairly simple. When they are intermittent is when they are difficult.
@@ghostwrench2292 Yeah, the GHOST issues are the toughest to diagnose when WRENCHing. 😉
Dear Boss
You are a great teacher and caring Doctor - I have been watching your videos carefully and I can see a master and genius when you put all the the trouble on the table and then pick the weakest link. Thank you professor
The root cause analysis here is great! I bet this only comes from many many years of experience and good mentors around you
I'm glad to hear you summarize 99% of the issues in our industry by the 2 minute mark. Many UA-cam channels can spend days on a repair for content, while shops are paying a mechanic 1.0 to sort out this issue...in most cases and are terrified to call a customer for more time and get screamed at for charging more.
It's a tuff business some times.
Being able to spend the time and still put food on the table is a HUGE plus.
Oh and nice work.
I didn't get enough of getting my ass kicked this week so I'll watch your stuff.
Excellent! Thanks AMD for including us in the diagnostic process. We can all learn from your experience in this complex field. Very much appreciated!
The first thing I saw were the dancing dashboard lights. In my professional experience, I would first check the grounds and alternator output.
If the car isn't running and the battery is charged, why would you check the alternator output? Has nothing to do with the issue.
@@milfordcivic6755 because at times, an alternator under load can produce electrical issues. There can be intermittent issues due to bad diodes or armature inside the alternator. We’ve seen this in our shop many times and this is where we start along with checking grounds. Many vehicles can have green corrosion at the grounds over time. We just look at this as a process before we take the next steps or steps on the elimination process of electrical diagnosis.
@@jamram9924good advice. I had a 07 Chevy Silverado. All kinds of electrical issues. Dealer couldn’t isolate it as it was intermittent. It drove me nuts until it finally completely failed at 75,000 miles. It was the main grounding cable.
Yeah, I had an accord that died during startup. One of the diodes of the alternator was bad and was disrupting the signal to the the CYP sensor on the distributor. Got a new alternator and started right up
@@tsurutuneado5981 that’s one of the issues with that generation of Honda Accord. This engine has no cam sensor but uses the distributor to monitor cam shaft signals/movement. I experienced the same symptoms with a remanufactured alternator ended up with an intermittent failing diode.
You confirm the opinion I've built over a lifetime: competence is truly rare in the world and precious when found.
Learned about CAN when I heard about theft by hacking into the network and making subsystems subvert security using relay attacks. I'm an IT systems architect and engineer so this stuff is right up my alley although I'm literally an illiterate on car repair. Logic is the ONLY way. Question--we have OBD2 applications that can read codes....WHY can't there be a specific tool or program to diagnose CAN issues? Systems are complex enough now and with AI I don't understand why the computer can't have some systems in place JUST TO keep tabs on things and communicate discrepancies. I honestly think the OBD2 port is antiquated but a necessary "Back door". All of that information should be presentable on the infotainment system.
Stop running interference for the dealership. I get the time aspect and the fact they need to get paid....but there needs to be a better way.
Thank you for cleaning the engine at the end.
Let me take a stab from business point of view. Adding this feature to the CAN is money, these problems are edge cases (car theft aside), the manufacturer at the end of the day will pass the R&D costs and parts to the consumer. The general consumer will not really get that and won't be happy. I am talking other people not viewing CarCareNut, we are different breed.
I am also from the tech industry, even the computer motherboard doesn't have diagnostics for the power capacitors.
Perhaps you should create that tool for the public and mechanic to use. You can really make good $$$ doing it. A diagnostic tool to figure out which part(s) have problem.
I used to work in a software company who tested these Can Bus systems for vulnerabilities. They can get very complicated. I can only imagine how complicated they are in the cars made in 2020s
That question misses a lot of what is going on here. The CAN system DOES have diagnostics and redundancy checks, but if a module fails and shorts out the network itself, the diagnostic network goes down.
You can have the most advanced AI computer in the world, but if the network cable connecting it to the outside world is damaged, it can't communicate nor diagnose anything.
As he noted in the video, if you connect a OBD2 scanner and the network is down, it DOES tell you what the problem is, something is shorting out the network, so you need to disconnect the modules to figure out which one is causing the problem.
Also, OBD2 is already obsolete and being replaced by OBD-III...
Then Design a system then for the computer to diagnose it. Intermittent electrical issues can be VERY time consuming. Would the customer be willing to agree to an open checkbook for a diagnosis? I spent 16 hours chasing down an intermittent can issue. So $3k to find the issue in the end. Is the customer going to approve that?
I had a similar problem with Avensis (UK, 2001). RPM and speed gauge hands moved or not moved absolutely randomly even when car was stationary. I changed three electrolytic condensers for like 50 cents and it is perfect 🙂
Just a short note, because you've said the majority of folks on this channel are do it yourselfers, and that might be true, but I suspect there's a lot of people like me… Who aren't really do it yourself or but they just love your storytelling and they enjoy knowledge. I feel like watching this channel makes me a bettermore informed car owner.
I'm also a scientist, and diagnosing a car isn't that much different than diagnosing an economy, a circulatory system, or whatever… We're searching for cause-and-effect and trying to separate the spurious correlation from the causal correlation. And it's exceptionally difficult sometimes
My first guess was something ECM related but I really didn't have much understanding of the CAN. Thanks for explaining it in a way that demystifies it!