with these EPS we've got an extra source of CAN Bus errors. The EPS module has a learned "centering function" to help the vehicle drive straight else car is unstable around neutral.
@@speedkar99 thanks for cutting it to pieces so l don't have to. I can see a lot of different uses for this setup other than steering a car that will come in very handy.
@@speedkar99 To me the quirky part is the twist you seem to always add referance to some relatives clothing item and also specilty tools = angle grinder. Very nice fun addition!
thank you for creating educational content that’s very approachable and beginner-friendly, while also not feeling condescending. as a car enthusiast who is in no way a mechanic; i appreciate you.
You are amongst the very best few automotive video producers on You Tube. My guess is you have an engineering background as well as being a mechanic. I am grateful for the time you put into these educational videos.
This explanation is really good, but think of how talented the people were that designed that steering and made it work flawlessly. Kudos to them and their ingenuity.
I'm kind of a tinkerer. There are multiple projects I've wanted to make that have been beyond my price range due to the cost of parts. Yesterday it occurred to me to see if I could use parts from junked cars. You helped me see it's totally possible. Thank you!
I'm working in the automotive industry, especially in the EPS electronics R&D field. The way you opened the PCB at 9:25 simply brought tears to my eyes 😂😂😂😂😂
hi.. pls help me.. my car has a electric power steering.. i start my car in a morning my steering wheel is very tight. in two or three minutes its going back to normal.. what is the reason..??
My 2020 RAV4 has this electric assist. I really like it! So smooth, center's real well, no pump, hoses, fluid and valves in the rack. Oh ya, no pump whine at full turn lock! Thank you for this video!
Thanks for taking time to dissect the system for everyone. Looking at the substantial motor armature I see why this system tends to damp rack movement. Good for passenger cars and trucks.
This reminds me of citroen's hydraulic diravi steering. There was no physical linkage too, a kind of physical backup linkage would apply only in the case the hydraulic system would fail. It was very comfortable for the time it has been built but it was very soft and did give allmost no feedback from wheels to steering wheel.
speedkar99 what’s going on that ye car must be scrapped -crash damage ? The components are top quality- Seems recycling components isn’t a thing where you are
Been subbed since the Toyota/Lexus programming videos. Thanks for the great content, always something new to learn. This looks like a well-made unit also.
Thanks. I kinda drifted away from the how to videos as the how stuff works videos and mechanical reviews have caught on and become more interesting since there isn't too much like that out there.
I think the torque sensor's metal ring goes up and down relative to left-right motion of the steering wheel. In order to know the driver's input is left or right and EPS module turn the motor clockwise or anticlockwise.
absolutely perfect, i've never seen one of these taken apart to such an extent before. ¿Why do you think they used spiral balls for the translation instead of a fixed bushing?, ¿is it to make the rack able to move the motor more easily in case of failure?, or to reduce friction?
Your explanations are still pretty good and if you really wanted to, you could send the logic board for the steering controller to Big Clive but he may or may not want to reverse engineer it.
Just want to give props: straight, to the point, without any long winded diatribe on the history or power steering or how Yakumi Honda married his wife.......great job! (I hate guys that drone on and on about superfluous crap lol)
I have a 2015 Toyota Corolla LE with an electric power steering system. My first vehicle with an electric power steering system so this video was a good explanation. I have noticed that when going down the road the steering wheel gets stiff. Its almost like its trying to return back into straight position. This happens while driving on curvy roads. I have checked the suspension, tie rods are good, axles are good, and have looked at the ball joints. What do you think could cause this?
Great video! maybe you can help me I recently crashed my 2009 Acura tsx on the front driver side it wasn’t that bad but it lock my steering wheel locked . on impact it disconnected my battery do you link the eps stopped sending signal or should I just get a new rack and pion ?
So the motor must always be running with the engine on because I hear a whine even when I'm not using steering. And I suppose that free wheeling device is what keeps the wheels from turning?
@@speedkar99 Then what would the whine be? (more prominent in the winter & gets higher in pitch when the wheel is turned) My EPS also has fluid. (2014 Nissan Altima)
so if my power steering goes in and out (some turns get hard but mostly fine) but i’m not getting a power steering message on the dash, would it be the whole module instead of just the motor?
How do we know if there is a fault in the electric steering? What maintenance work is required? What is the expected life span of each of the parts - torque sensor/ steering motor?
Hi have problem with my mini motor runs couple of seconds on full right hand lock .Thanks for explaining how it works .ps do think it's ecu or electric motor 🤔.
Pretty cool. The *stator* is the field frame, and in this case has permanent magnets. It is a six pole machine. The armature (where power conversion takes place) is the part that rotates, in this case.
Can you tell me which wire on the circuit diagram is the speed sensor or comes from the car tacho? I’m curious if I can modify the signal so that I can have more/less assist at certain speed range
My 2017 rav4 hybrid’s rack pinion fastener, which hold pinion on the chassis. the driver’s side one developed two long cracks. Do you think I can weld it or have to replace it? Thank you
so, in theory, you could manipulate the torque sensor readings to automate steering without input from the steering wheel. Hope the security on that module is tight...
@@speedkar99 so how likely is moisture or failing component to cause these things to make a sharp left turn when you're at highway speeds? can a human overpower this thing, or is it going to be in control if something goes wrong?
@@lukerediger8431 Note the "fail safe relay" that can disconnect the motor if things go wrong. The ECU likely has two computers that run in lockstep, and if there is a failure it will disengage. And I suppose the two coils in the sensor, are checked against each other as well. I wonder how they would detect a stuck sensor - maybe that joest doesn't happen. Same with that mtor catching on something. I suppose that is the reason for the security screws: don't mess with it.
@@pizzablender yeah.... this bothers the hell out of me, when simple electronics fail due to moisture, tin whiskers etc, they normally just fail to work, but every once in a while they turn up one function to 11... and the idea that my steering might just get snapped full right or left by something with mechanical advantage over me at some random point in the future... If the signal from the sensor shows an increasing voltage as the steering column increases torque, then it should fail safe in that the sensor will always read 0 torque meaning the motor will not be energized, but if moisture gets into the box in the cabin, all bets are off, the H bridge could lock on one way or the other, the collectors on transistors could short to a live wire, and if the ECU is talking to this thing and giving it trim adjustments, a short in the wiring harness could do the same thing. This is before tampering is considered. Auto manufactures are doing stupid shit like letting the Bluetooth module for the entertainment center talk to the ECU, and malicious hacking is increasing. A hydraulic system can't fail like that.
Question: What's the problem if the steering doesn't return (to center) automatically while driving/moving? it is steady if you turn the wheel even if the car is moving. Is the motor broken? What should I check first?
Makes you wonder who builds these. There are no service user parts in that. The whole rack is just replaced. Its amazing to me how these units work. Vehicles made with these will never become vintage because they break down and become scrap over time. They were designed to only last so long.
It's funny as the push to fight "climate change" (who knows what they'll call it next week) completely ignores our disposable everything culture. Everything is made to last a short amount of time, to maximize profits. Fills landfills very quickly 😂
What would ever need to be replaced? The only failure possible is a critical one. You have been tricked into believing having parts that are so bad they need to have serviceability built into them is a good thing. Optimally parts never need servicing to begin with.
great breakdown. those ball drive has me thinking would make great cnc drive.. can only get this info when someone does these breakdowns. thumbs up! and great little jokes.
I have a power steering motor from a Chevy Bolt I would love to use for an electric scooter. I wonder how it could be wired to run at full speed in either direction?
So you had to remove the whole engine to fix this? Or is this just for education purposes? Cuz if it’s not, it sucks if you have to remove the engine to fix it.
Sheesh, everything from a full mechanical disassembly to a complete view of the underlying electronics. Thanks again for a great video!
Thanks. Gotta understand the whole system to appreciate how it works
with these EPS we've got an extra source of CAN Bus errors.
The EPS module has a learned "centering function" to help the vehicle drive straight else car is unstable around neutral.
@@speedkar99 thanks for cutting it to pieces so l don't have to.
I can see a lot of different uses for this setup other than steering a car that will come in very handy.
@@speedkar99 it's awesome to see I get my special tools from the same place you do!
My car gives code 71 01 engine angle sensor, sin/cos neutral point, could it be that the black 3-pin sensor is not working?
I love this guy because he puts work into his explanations.
Also his nonchalant jokes about his brothers hat or toothbrush.
Very underrated
Thanks, glad you appreciate my style
@@speedkar99
- sometimes use something from own women if you dare and not only from own brother
@@planje4740 He did, few vids back it was her underwear I believe and drew so much British dry humour over it
277k subs speak for themselves
I got to get me one of those special bits too. ;)
"So I'm going to use my special security bit to take these off..." *Angle grinder fires up*
Yep, that's my special bit!
@@speedkar99 I knew it was coming but I still laughed like a hyena anyways
Just wanted to drop a thank you. You give the absolute best expalination of how systems work, with a great addition of humor and quirkiness!
Glad you appreciate my work. Why quirky though?
@@speedkar99 To me the quirky part is the twist you seem to always add referance to some relatives clothing item and also specilty tools = angle grinder. Very nice fun addition!
thank you for creating educational content that’s very approachable and beginner-friendly, while also not feeling condescending. as a car enthusiast who is in no way a mechanic; i appreciate you.
You are amongst the very best few automotive video producers on You Tube.
My guess is you have an engineering background as well as being a mechanic.
I am grateful for the time you put into these educational videos.
Thanks. I do put alot of time in research, filming and editing. I am a mechanical engineer and wrenching is my hobby.
This explanation is really good, but think of how talented the people were that designed that steering and made it work flawlessly. Kudos to them and their ingenuity.
Sure
This guy is amazing! Also, I've started using a toothbrush to point to everything while I teach. It's been very effective.
Thanks. Sure it's a good habit
Rapid fire details. I love it.
Everything I ever learned about how things work has come from taking things apart. The best way to learn.
I'm kind of a tinkerer. There are multiple projects I've wanted to make that have been beyond my price range due to the cost of parts. Yesterday it occurred to me to see if I could use parts from junked cars. You helped me see it's totally possible. Thank you!
I feel like I've been to college on EPS in 10 minutes. Thanks!
I'm working in the automotive industry, especially in the EPS electronics R&D field. The way you opened the PCB at 9:25 simply brought tears to my eyes 😂😂😂😂😂
hi.. pls help me.. my car has a electric power steering.. i start my car in a morning my steering wheel is very tight. in two or three minutes its going back to normal.. what is the reason..??
Hello, can you tell me what would be ideal EPS gear for electric vehicle ? Is it ball screw or worm gear?
My 2020 RAV4 has this electric assist. I really like it! So smooth, center's real well, no pump, hoses, fluid and valves in the rack. Oh ya, no pump whine at full turn lock!
Thank you for this video!
It sure is mechanically simplier and more reliable. But it devoids it of steering feel
#3. Cut off wheel is such a wonderful tool.
I wish all tech. videos were as clear and fast and accurate as yours is. Well done.
Thanks
You are a very good teacher straight talking and no if and but could listen to you all day thanks
And now I put it back together..........great video, great explanations.
Thanks for taking time to dissect the system for everyone. Looking at the substantial motor armature I see why this system tends to damp rack movement. Good for passenger cars and trucks.
0:17 That socket, by the pinion looks like an emoji jumping around ! Brilliant video, easy to understand and to the point. Subbed and binge watching !
You seriously deserve more subscribers, great job as always
Bravo ! Very well done. I thought I had seen enough steering box's to last a life time. I was wrong.
Honda and Mazda do great Electric Power Steering, so much feedback for EPS.
It has to do with their suspension and tire tuning
Yep own a first gen mazda 3 can't tell the difference between that and mechanical sometimes lol
Thanks for this. Love videos like this and learning. Finally started investing a bunch of tools to start. Next goal is to invest in some space
😂😂😂 I love that power snap ring tool! Looking forward to every video that you put up my man!💯👍
I just love your complete set of obscure removal tools; great video
Love the grinder too
Thanks for your exalent video! Wish I had your video's 60 years ago? Keep it up!
Definitely no electric steering racks 60 years ago! But yeah every aspiring mechanic should be able to see these videos
Great detailed description! This guy is really good!
Thanks and glad you learned something new
Great video explanation. Answers a lot of questions. The real trick is putting that thing back together. Thanks!
WELL DONE SIR , YOU MADE IT EVEN A CHILD CAN UNDERSTAND... GOOD JOB ...
that special security tool!!! Soooo SATISFYING!!!
Gotta love my grinder
This reminds me of citroen's hydraulic diravi steering. There was no physical linkage too, a kind of physical backup linkage would apply only in the case the hydraulic system would fail. It was very comfortable for the time it has been built but it was very soft and did give allmost no feedback from wheels to steering wheel.
This still had the physical linkage....
Nice teardown of an electric steering rack. Thanks
Thanks a lot for bringing that science to us !
Was wondering since a lot of time how the torque could be measured ^^
That was a great explanation of the EPS system! Thanks. Unfortunately I just keep seeing one heck of a linear actuator. :)
Thanks!
great video buddy
im getting a job because of your teaching realy apreciate the help
Wow, what kind of job? Glad I could help
I love the toothbrush! 😂Excellent job!!! You are very smart AND a clear teacher!
Great video. Full of info and concise. Loved the parts with the fancy special tools. Now waiting for the reassembling tutorial ;-)
No thanks
Bravo! Excellent video! Now I understand why my new OEM steering rack & pinion was so expensive...😫
Thanks! Yep they sure cost alot
I subscribed your channel when u hold the grinder. Absolutely technology is beautiful from inside
Dude, Love how you went into the electronics of it. Cheers.
Another good video you show us how things work in our car, thank you.
You are welcome
It’s such a shame destroying the latest technology comparatively.At least you documented it !
🤘🇬🇧
Destroying what would have been crushed as a scrap car?? I'm doing a favor here...
speedkar99 what’s going on that ye car must be scrapped -crash damage ? The components are top quality- Seems recycling components isn’t a thing where you are
5:50 Even he’s just as amazed as we are 😲
Great video as always!
Just got my first vehicle with electric power steering and I like it so far. The steering feel is really good and so quiet.
Seems like that Honda rack was pretty well built. You had to saw that sh!t apart.
It sure was. In fact most of the racks I've taken apart we're pretty sealed up, see my previous videos.
Very thorough job sir. You covered it all.
Thanks
You deserve more subscribers 👏
Hopefully someday. Share with your network
Been subbed since the Toyota/Lexus programming videos. Thanks for the great content, always something new to learn. This looks like a well-made unit also.
Thanks. I kinda drifted away from the how to videos as the how stuff works videos and mechanical reviews have caught on and become more interesting since there isn't too much like that out there.
My BS degree EE didn't cover many of these issues. Many Thanks. Bob
This isn't EE ...
I think the torque sensor's metal ring goes up and down relative to left-right motion of the steering wheel. In order to know the driver's input is left or right and EPS module turn the motor clockwise or anticlockwise.
Yes, and with two sensors, the computer can compare one to the other as a fail safe. Much like throttle control, two parallel inputs.
Yes and there's two coils inside the Sensor oppositely wound
Thank you very much, now I know how it works and how to dissemble it, could you please make another video on reassemble?
🤣
phenominal teaching. very grateful to you. regards.
absolutely perfect, i've never seen one of these taken apart to such an extent before. ¿Why do you think they used spiral balls for the translation instead of a fixed bushing?, ¿is it to make the rack able to move the motor more easily in case of failure?, or to reduce friction?
Prescise and reliable positioning.
I've seen the Chevy Cruze rack
...it has a belt driven rack!
@@speedkar99 I'd love to see vw mk5 electric rack, as it seems it has a motor spinning all the time at certain rpm
Jeeze. You've got so many specialty tools.
Your explanations are still pretty good and if you really wanted to, you could send the logic board for the steering controller to Big Clive but he may or may not want to reverse engineer it.
Just want to give props: straight, to the point, without any long winded diatribe on the history or power steering or how Yakumi Honda married his wife.......great job! (I hate guys that drone on and on about superfluous crap lol)
Superbly ordered and comprehensive
That was awesome, I love how you dismantled every part, great video! 👍
Thanks
I have a 2015 Toyota Corolla LE with an electric power steering system. My first vehicle with an electric power steering system so this video was a good explanation. I have noticed that when going down the road the steering wheel gets stiff. Its almost like its trying to return back into straight position. This happens while driving on curvy roads. I have checked the suspension, tie rods are good, axles are good, and have looked at the ball joints. What do you think could cause this?
That's how it's programmed
Great!! Now that I know how it works , I'm gonna be forced to explain it to someone, ah man... thanks a lot. Awesome video by the way!!!
Teaching others helps you to remember yourself
@@speedkar99 Very good answer, bro!!
Electromechanical genius! Loved the explanation of the torque sensing system.
The torque sensor determines if there is a driver input and activates the power steering?
Yes
Great video! maybe you can help me I recently crashed my 2009 Acura tsx on the front driver side it wasn’t that bad but it lock my steering wheel locked . on impact it disconnected my battery do you link the eps stopped sending signal or should I just get a new rack and pion ?
You'll probably need a new rack if it damaged it that bad!
I like your security bits.
I couldn't get by with these security bits on a BMW engine I'm working on
I always enjoy the remarks about the wife's toothbrush or the brother's T-shirt, but I had a good laugh this time around about the security screw bit.
Hey it's all using what I can!
very good explanation, mechanical and electronics side. very satisfied. keep up the good job.
So the motor must always be running with the engine on because I hear a whine even when I'm not using steering. And I suppose that free wheeling device is what keeps the wheels from turning?
The motor only turns when you turn the steering wheel
@@speedkar99 Then what would the whine be? (more prominent in the winter & gets higher in pitch when the wheel is turned) My EPS also has fluid. (2014 Nissan Altima)
Superb! We hope your future videos will be full of new technological things. Good luck!
Hello sir, were still waiting for our Core rack.
I scrapped it
Hi can you explain how this motor works. Only coil windings on the rotor I could see, but where are the magnets or no magnets needed?? And no stator??
They make an electric steering rac and pinion? I'm assuming this does not need power steering fluid?
Correct.
Thanks! Can you dissassemble a honda cvt? We all want to know what makes it so much more reliable than the nissan/jatco cvts.
If I ever get one. Those are too new to find scrap
Does this mechanism include a steering angle sensor on the steering column by chance?
Great video. I wish we could apply your special security bit to auto execs who replaced hydraulic with electric.
Why though? No more leaks
@@speedkar99 I find electric steering to be numb & prefer the feel of hydraulic. You are right, no leaks.
so if my power steering goes in and out (some turns get hard but mostly fine) but i’m not getting a power steering message on the dash, would it be the whole module instead of just the motor?
Check for loose connections, any fault codes in the system and the intermediate steering shaft isn't binding up.
You did a great job explaining this. Thanks
Will the steering work when engine
Is switched off but the key is an On
Mode
Thank you, watching from Jamaica.
Thanks from Canada
There is nothing on this Earth will last forever except your good deeds and no one will live on Earth forever, we all are travelers on Earth.
Good
Im definitely going to buy me a snap ring removal tool like you have. Can I use this to remove other things as well?
How do we know if there is a fault in the electric steering? What maintenance work is required? What is the expected life span of each of the parts - torque sensor/ steering motor?
Thanks for your elaborate of the EPS systems. I think my 2012 highlander has this system . I prefer the hydraulic ones.
Hi have problem with my mini motor runs couple of seconds on full right hand lock .Thanks for explaining how it works .ps do think it's ecu or electric motor 🤔.
Fantastic ...thank you. Is the motor actually AC?
No it's DC
Pretty cool. The *stator* is the field frame, and in this case has permanent magnets. It is a six pole machine. The armature (where power conversion takes place) is the part that rotates, in this case.
Just found your channel. Informative and entertaining.
Thanks for subscribing
Can you tell me which wire on the circuit diagram is the speed sensor or comes from the car tacho? I’m curious if I can modify the signal so that I can have more/less assist at certain speed range
It comes through the CAN bus
My 2017 rav4 hybrid’s rack pinion fastener, which hold pinion on the chassis. the driver’s side one developed two long cracks. Do you think I can weld it or have to replace it? Thank you
Would love to see a mechanical review of a 09-12 rav4 v6/awd model. This is great content, keep it up.
so, in theory, you could manipulate the torque sensor readings to automate steering without input from the steering wheel. Hope the security on that module is tight...
That's how line keeping assist, automatic parking etc works :)
Yes of course it's hackable
@@speedkar99 so how likely is moisture or failing component to cause these things to make a sharp left turn when you're at highway speeds? can a human overpower this thing, or is it going to be in control if something goes wrong?
@@lukerediger8431 Note the "fail safe relay" that can disconnect the motor if things go wrong. The ECU likely has two computers that run in lockstep, and if there is a failure it will disengage. And I suppose the two coils in the sensor, are checked against each other as well.
I wonder how they would detect a stuck sensor - maybe that joest doesn't happen.
Same with that mtor catching on something. I suppose that is the reason for the security screws: don't mess with it.
@@pizzablender yeah.... this bothers the hell out of me, when simple electronics fail due to moisture, tin whiskers etc, they normally just fail to work, but every once in a while they turn up one function to 11... and the idea that my steering might just get snapped full right or left by something with mechanical advantage over me at some random point in the future...
If the signal from the sensor shows an increasing voltage as the steering column increases torque, then it should fail safe in that the sensor will always read 0 torque meaning the motor will not be energized, but if moisture gets into the box in the cabin, all bets are off, the H bridge could lock on one way or the other, the collectors on transistors could short to a live wire, and if the ECU is talking to this thing and giving it trim adjustments, a short in the wiring harness could do the same thing. This is before tampering is considered. Auto manufactures are doing stupid shit like letting the Bluetooth module for the entertainment center talk to the ECU, and malicious hacking is increasing.
A hydraulic system can't fail like that.
Love that special security bit @ 5:45=))
Question: What's the problem if the steering doesn't return (to center) automatically while driving/moving? it is steady if you turn the wheel even if the car is moving. Is the motor broken? What should I check first?
Thank you for an informative and well presented run down.
You are welcome
I learn again! Great job as usual. Thanks for sharing. 👉👊
Thanks I'm glad it was easy to understand
Makes you wonder who builds these. There are no service user parts in that. The whole rack is just replaced. Its amazing to me how these units work. Vehicles made with these will never become vintage because they break down and become scrap over time. They were designed to only last so long.
It's funny as the push to fight "climate change" (who knows what they'll call it next week) completely ignores our disposable everything culture. Everything is made to last a short amount of time, to maximize profits. Fills landfills very quickly 😂
What would ever need to be replaced? The only failure possible is a critical one.
You have been tricked into believing having parts that are so bad they need to have serviceability built into them is a good thing.
Optimally parts never need servicing to begin with.
great breakdown. those ball drive has me thinking would make great cnc drive.. can only get this info when someone does these breakdowns. thumbs up! and great little jokes.
with speed increasing the eps becomes more stiff to help keep the car under control?
Or perhaps it's just harder to turn the wheels due to centrifugal force
That's a function of caster angle
I have a power steering motor from a Chevy Bolt I would love to use for an electric scooter. I wonder how it could be wired to run at full speed in either direction?
Keep up the good job mate!
Your brother's clothes though 🤣 🤣 always cracking me up!
Haha
So you had to remove the whole engine to fix this? Or is this just for education purposes? Cuz if it’s not, it sucks if you have to remove the engine to fix it.
See my previous videos on this car...I'm tearing it down and had to remove the engine.
Engine teardown coming next!
@@speedkar99 sir i message you on insta plz reply