Thank you very much, your teaching is spot on, very clear and your style is easy to follow. I'm 78 years old with early dementia..Sometimes light is on, sometimes not. The simple and positive way you explain the tools and tips for use, it acts like a mental stimulant. I've done sensors before but forget proper steps sometimes. The patience you show and presentation kind of sparks my memory. and I can follow along. Perks up old memories and adds new ones. I am very pleased to be able to regain some knowledge which lets me see I am not totally gone mentally, Please excuse the long winded notes. Just know how helpful your teaching is and how it makes this old man happy. Your father would be proud. It's one thing to have knowledge but to share it with others is a real gift, Keep up the good work. I'll be watching, may not remember tomorrow but the spark is in the brain now, so it's all good. Doyle
I'm 62. My thoughts are mostly expressed by others already. This type of video is perfectly clean, clear, and definitely in a class of its own. Keep cranking out the hits, as my old radio bud used to say!
A techie Kid, you know your tools and how they work, excellent video. I'm an old guy, so under 30s are all kids to me, no disrespect in the least, and thanks for sharing your knowledge.
I stumbled on to you last night and I am glad I did all your methods taught was. Clear, persicise, straight to the point and in layman's terms I ground my back right wheel sensor to be bad thanks again great class and definitely a thumbs up video
@ I spent two days per week teaching oscilloscopes for up to 8 techs, dealer & private in 13 different tech schools. Wichita to Sioux Falls, Columbia MO to Pewaukee WI for ACDelco. Plus 28 different seminars & 5 warehouses. Crazy!
@ Good techs make great students. Good students ask great questions. This alone makes an instructor provide better answers and have fun rather than work. After decades, the pay could have been better, but it was my way of giving back to all things gas & chrome!. And from a farm kid.
A tip for anyone watching this for measuring your wheel speed sensor with a multimeter. For most of us that won't have the lead used for demo, I found the needles used on a pump to inflate basketballs works as an alternative. They fit nicely over the pins and extend out so you can make contact to test.
excellent educated, intelligent way of explaining and process of elimination by switching front sensors readings , ty i need one of these signal generators !!! 100-100 ty so much
So are we now going from the right front to left rear..🤔 or was it left front to right front...🤨 I'm confused 😂🤣 good job man!!! I'm just josh'n.... If they can't follow along then maybe a mechanic is in order👍🏽 thanks,keep doing what your doing!!!
Im glad you said that it wont hurt anything, because thats what Im afraid of with diagnosing in general; using jumper wires can be a problem if you bypass the load you could fry the transistor drivers in the ECU......
Very very informative, wish I had sny of those tools but I do have a volt meter so I could do the ohm thing. I take mine to the dealership. Even though my VW is 7 years old I have purchased an extended warranty and is good till end of next year. Keep up the great videos.
Thanks Rob. I'm doing some research to figure out why our Audi abs is activating on dry roads. I suspect bad speed sensor. Trying to narrow down which one
Testing my left front sensor was not the problem I had. I knew it was bad from the code reader and a Ohm test on the loose sensor leads confirmed this. My main problem was the getting the damn thing out since it was so rusted in (20 year old Honda) that the only way it would come out was in little pieces. One trick I learned was if you have the hub out to change an axle, be sure to soak that ABS sensor in penetrating oil from the axle side. Let it soak for a day and then take a 17mm socket and gently tap the sensor out of the hub with a small hammer. This way you dont break it compared to trying to pry it out from the other side where the bolt is. Put a generous amount of grease all over things when reassembling to make this chore easier next time too.
I picked up this scan tool ''ThinkScan Plus S4'' to read these modules ABS SRS ECM TCM BCM and give me live data,, only ran me $137 on ebay. I also picked up an extension cord to go with it,,, ''3FT 16 Pin Car OBDII Male to Female Extension Cable'' for $11, I can set my scanner in the pass seat to see live data as I drive carefully around!! Been had a couple electrical meters,, old industrial electrician. To read your codes you MUST have an interface to ''talk'' with your car's computers!
Great video, I think there is one problem with your signal generator test tho, what if it is a broken connection in the + feed from the ECU to the sensor? That will not show if you don't test that pin on the connector, or am I thinking wrong? I saw a comment on a Toyota sensor having a much lesser value when Ohm-metering, I guess that is a coil-type sensor, while the one you are testing is a Hall element?
I have a signal generator, but not the one specifically for the ABS, what voltage amplitude should I use for the sine wave? Is 1V peak to peak OK? I will look at the signal with an oscilloscope at the ABS module, I just don't want to use too large of a signal and possibly damage some circuitry.
Awesome video. I really like the signal generator method. It's so fancy. Would I be able to test my abs module with a keyboard Synthesizer? Haha! I'm kidding!
Great video, just one question? When you connects the test leads on the connectors the polarity does not matters? If does how you know which is which? Thank-you keep up the good work, let me know my question,cheers for from ontario ca. I just subscribed to your channel
The Wheel Speed Sensor might be a Hall Effect component. Since this is a semiconductor device then, when you are doing Ohms testing, you should really measure Ohms once way, swap over the wires, then Ohms the other way (polarized). You might notice different readings when you do this on the ohmmeter. But nevertheless, both sides should match.
This video was kinda useless to casual DIY'rs. the easier, cheaper way to test for a bad wheel speed sensor is this: 1. Disconnect the wheel speed sensor connector. 2. Find the two-pin connector that leads to the sensor. Connect it to a multimeter. 3. Set the multimeter to ohms. 4. Measure the resistance. It should be minimal. If the meter indicates an open condition (very high resistance) or a short, the sensor is bad. 5. Next, if the sensor passes the resistance test, set the meter to measure AC voltage. 6. Have a buddy manually spin the wheel hub. Have them do it as fast as possible. Watch the voltage on the multimeter. If it changes in accordance with the speed at which the wheel hub is rotating, the sensor should be fine. If there’s no change, or no voltage read, then the sensor is likely bad. (The amount of voltage produced is very minimal, and completely safe.) 7. Repeat the above steps as needed with the rest of the wheel speed sensors on your car.
thanks for this helpful video ! i have a question : i bought a Oscilloscope that generate signal output like your tool ! Model is : DSO-TC3 !!! i can do everything like your tool but when i connect my wire to the signal of the connector or the speed sensor wire , the mp/h doesnt go up on my scanner !!!! so my question is : how much output voltage do generate your tool ? mine do generate max 3.3 volt so i think i need a tool that generate more Output voltage so i can send Hertz to abs/speed sensor wire for see a reading on my scanner ...
I prefer the lab scope, if you scope the signal you can see glitches the scanner might not pick up, and if the wheel bearing is missing a tooth on the encoder you’d also see that on the lab scope
I tend to agree. A scope will give you more precise and accurate real time information. A scan tool will help point you to which wheel speed is causing trouble but that doesn't mean it's the sensor at fault. That's when I'll grab my pocket scope and continue the diag 👍
Hi! No idea, but: Would it be possible to spin the wheel for to see, if a sensor ist working? May be with the help of a Multimetre? Greetings from Germany Lars
issue with the oscillator/generator is you need live data on the diagnostic tool which ups the cost of that end too - hoping to just eliminate bad sensor and check voltage on wires hopefully.
Good question. This is a variable reluctance sensor. It produces its own voltage as the reluctor wheel passes by the sensor. It's been around a long time. Many new cars now have what's called a magneto resistive sensor. It works on different principles. It would be nice to make another video that focuses on the new technology.
Good video. I have a 2011 Kia soul+ auto with an intermittent ESC light. It generally comes on in the summer time in the hot weather. When it does, we lose power and must turn it off to continue driving. I have just a basic scanner from Amazon (no abs) and no fault codes show up on it. Does the fault/light need to be active for it to show up on my scanner? I've read it could be wheel sensor or brake stop switch. I really don't want to be buying and replacing parts that aren't faulty. I don't have all the tools you have to diagnose. Recommendations? Thanks again.
Hey Bryce, some fault codes will stay stored in history for a little while even though the light is out. You don't need a super expensive scan tool but one that can read abs codes Is a must. The codes won't show up on a tool that only scans the engine computer. You can also take it to an auto parts store like AutoZone and see if they can read the codes. It's free and that may give you a direction to start with.
cool video! i am a DIY person! i have a problem with my right wheel ABS sensor electrical fault saying volatge too low. I got this scanned from a mechanic and wouldt trust to leave my vehicle for any repairs. would you suggest me some solution?! i own a 2019 VW polo GT TSI petrol. thanks.
Mine read ABS and RF wheel speed sensor. Drove it home and ABS didn't last 5 miles before light came on again, and started pulsing when I stopped. Then hooked up reader and it said LF sensor. Cleaned the ground for the ABS for kicks, and cleared codes. Took it for a drive and when I got back now it say the RF sensor is bad again. Am I looking at a bad ABS? 2008 Trailblazer. But only a sensor code this time, but ABS light is back on again, along with Stabilitrac. If I don't disable stabilitrac it will not hardly move.
The bearing could have a bad refluctor ring and the sensor could be giving an erratic signal. A small hand held scope hooked to the connector and spinning the tire will show you on screen your exact ac pattern and if you have a tooth missing from that ring that is causing the issue. It will show up in the wave form on your pocket oscilloscope and you will see it.
@@jpol3808 Excellent comment! I didn't mention anything about the tone ring just the sensor but a bad tone ring can also cause the abs light to come on 👍
@ValleyMobileAutomotive You got this buddy. Great video and keep them coming. I'm an old mechanic and no one can remember or know everything. Thanks for the reply and take care! J Poll. 👏✌️🏁🇺🇸
A question. I assume the wheel sensors are just a magnetic pick up catching the magnetism from a rotating magnet on the rear axes and wheel bearing on the front. Could the sensor be tested by either a continuity or resistance test by rotating the wheel slowly by hand?
There are two main types of sensors. "Variable reluctance" producing a sign wave and "magneto resistive " producing a square wage. You can have either a stationary magnet in the sensor and a moving metal tone ring or you can have the magnet moving as part of the wheel bearing. It's cool technology that's also used for the crank position sensor and cam position sensors.
The ohm reading won't work unless you have the code saying which speed sensor is bad, in my case I am not getting a different code for the left or the right I'm just getting a code for bad wheel sensor. Because there's nothing to compare it to what if all four speed sensors are bad or three out of four or both front or both rears are bad, the only thing I could think of would be to go to the auto parts store and see if they will let you test a new one that they have on the Shelf and then compare the ohms
Why not save all that work and just test each sensor with a multimeter? If they make voltage, then they work. Make sure to switch to A/C volts on multimeter because magnets are used in the sensor.
I have a 2007 Toyota Camry sensor right front is bad I changed it light stayed off it comes on periodically now it stays on all the time what should I do
Two questions: is the light on for the same sensor (right front) and what brand sensor did you use? Two thoughts come to mind. Either the sensor is faulty again (my first thought) or it's a wiring problem that was temporarily fixed while moving things around during replacement and now the wire fault is back (less likely).
@@ValleyMobileAutomotive hi i had the same thing. but this is the second time i replaced it. the errors were gone I drove something with 15 km and is back. the garage said they taped something with cables when they replaced it. It could be wiring problems.? the first time when I went to replace it, nothing had happened, the errors had come right away. and is it normal that when I open the car that I immediately get the errors (handbrake)? Please help i stuck with this problem for 5 months.
@@ValleyMobileAutomotive and I went to see with the diagnostic tool what the reading things are. back and front left reads well.but right front nothing he is at 0 and the other just good.
Yes, you'll need a scan tool capable of communicating with the ABS control module. The signal generator is for testing the wire integrity from the speed sensor to the ABS computer. The only way to know if the computer is picking up the signal is by looking at scan data.
@@ValleyMobileAutomotive I already have a scan tool (on my phone), but when I select "Live data" option, it doesn't give any readings from the abs sensors, so I'm not sure if the signal generator will help me to get readings on my scan tool. Thank you for your quick response !
Hello i have cod c1200 front left wheel.. and i buy new one and clean code but after 4days abs tcs appear.. I measure data from abs sensor socket its not correct like right socket i shake wire in control module abs to correct data and data is good and clear Fault after 3..4 day abs light is appear what i can do with c1200 code..?
Thank you very much, your teaching is spot on, very clear and your style is easy to follow. I'm 78 years old with early dementia..Sometimes light is on, sometimes not. The simple and positive way you explain the tools and tips for use, it acts like a mental stimulant. I've done sensors before but forget proper steps sometimes. The patience you show and presentation kind of sparks my memory. and I can follow along. Perks up old memories and adds new ones. I am very pleased to be able to regain some knowledge which lets me see I am not totally gone mentally, Please excuse the long winded notes. Just know how helpful your teaching is and how it makes this old man happy. Your father would be proud. It's one thing to have knowledge but to share it with others is a real gift, Keep up the good work. I'll be watching, may not remember tomorrow but the spark is in the brain now, so it's all good. Doyle
I love this!
I love you tube
I'm 62. My thoughts are mostly expressed by others already. This type of video is perfectly clean, clear, and definitely in a class of its own. Keep cranking out the hits, as my old radio bud used to say!
@@brainhearted Thanks! I appreciate your comment 🙂
A techie Kid, you know your tools and how they work, excellent video. I'm an old guy, so under 30s are all kids to me, no disrespect in the least, and thanks for sharing your knowledge.
This is not a TH-cam video, this is a class 👏
How refreshing. No music, shouting, swearing, explosions, sarcasm, funny hats, huge beards, bulging guts, just clear explanation!
Oh no, not another beardist. Lol there's nothing wrong with beards.
Beard envy.
He got a new subscriber cause he’s straight to the point.
Everyone makes fun of a redneck.....
Till your shit breaks down. Then ,a huge beard dude comes in handy
Bearded guys do a Great job 💪
I stumbled on to you last night and I am glad I did all your methods taught was. Clear, persicise, straight to the point and in layman's terms I ground my back right wheel sensor to be bad thanks again great class and definitely a thumbs up video
Very clear and easy to understand. Much appreciated.
Good video man. Thank you for the knowledge and the ability to save money. I hope life treats you kindly.
I really appreciate umm free videos. You seem more fluent and proficient in the subject matter. Thanks for the extra effort.
The signal generator method! Thanks for sharing
really helpful info
Use an oscilloscope! Turn the wheel and watch for a consistent signal of multiple pulses. ASE Master.
Thanks kindly for sharing.
@@deankay4434 I prefer the oscilloscope as well 👍
@ I spent two days per week teaching oscilloscopes for up to 8 techs, dealer & private in 13 different tech schools. Wichita to Sioux Falls, Columbia MO to Pewaukee WI for ACDelco. Plus 28 different seminars & 5 warehouses. Crazy!
@deankay4434 Nice! I've had some memorable instructors over the years.
@ Good techs make great students. Good students ask great questions. This alone makes an instructor provide better answers and have fun rather than work.
After decades, the pay could have been better, but it was my way of giving back to all things gas & chrome!. And from a farm kid.
Very good tutorial Robert as on my electrician myself everything is right that you said
Excellent video on how to diagnose a wheel speed sensor.
Great Video .Well done. Very clear...And yes just you being natural...Wanting to help people understand the issue
A tip for anyone watching this for measuring your wheel speed sensor with a multimeter. For most of us that won't have the lead used for demo, I found the needles used on a pump to inflate basketballs works as an alternative. They fit nicely over the pins and extend out so you can make contact to test.
@@leblancch Thanks for the tip 👍
excellent educated, intelligent way of explaining and process of elimination by switching front sensors readings , ty i need one of these signal generators !!! 100-100 ty so much
@@battlehrfred Glad this video was helpful 🙂
Thank you, excellent video with all the information I need in a clear and understandable presentation.
Excellent video. Thank you. Could you make a video on using the mini oscilloscope only and show where the connections would go?
Thank you very much for a good and informative diagnosis procedure.
So are we now going from the right front to left rear..🤔 or was it left front to right front...🤨
I'm confused 😂🤣 good job man!!! I'm just josh'n....
If they can't follow along then maybe a mechanic is in order👍🏽 thanks,keep doing what your doing!!!
Thanks for the video, good education and very clear
Very well made video! Never realized that signal generators that tiny are available, very cool!
incredible video. i’m 100% getting a signal generator.
Excellent video ..no bull just facts .. i used my multi meter thanks
Good clear precise information thank you
One of the best videos I’ve seen on here. Well done! Will like and subscribe! Please share the parts esp the signal generator.
Thanks, brother. Now I have a plan for tomorrow morning 👍
thanks Robert. excellent video. thorough, to the point and perfect explanation
@@jasonholmes8874 Thanks! Glad you liked it 🙂
Im glad you said that it wont hurt anything, because thats what Im afraid of with diagnosing in general; using jumper wires can be a problem if you bypass the load you could fry the transistor drivers in the ECU......
@@carlodonnell146 I definitely understand. When I was first learning I was afraid too.
This video was very helpful to me, thanks for taking the time
Hey thanks Kenny glad it was helpful 👍
Very impressive tutorial information thank you for sharing your knowledge and experience
@@colin5064 You're welcome! Glad this video was helpful 🙂
Very very informative, wish I had sny of those tools but I do have a volt meter so I could do the ohm thing.
I take mine to the dealership. Even though my VW is 7 years old I have purchased an extended warranty and is good till end of next year.
Keep up the great videos.
Thanks the was very detailed and informative!!! Please keep uploading videos. 🎉🎉🎉
Thanks Rob. I'm doing some research to figure out why our Audi abs is activating on dry roads. I suspect bad speed sensor. Trying to narrow down which one
Good job Robert. Very informative.
Testing my left front sensor was not the problem I had. I knew it was bad from the code reader and a Ohm test on the loose sensor leads confirmed this. My main problem was the getting the damn thing out since it was so rusted in (20 year old Honda) that the only way it would come out was in little pieces.
One trick I learned was if you have the hub out to change an axle, be sure to soak that ABS sensor in penetrating oil from the axle side. Let it soak for a day and then take a 17mm socket and gently tap the sensor out of the hub with a small hammer. This way you dont break it compared to trying to pry it out from the other side where the bolt is. Put a generous amount of grease all over things when reassembling to make this chore easier next time too.
Hey Mike, Thanks for the tips! 👍
Thank you Robert! It looks like you are from Washington state!! Federal Way in the house 😊👍🏻
Awesome video great detail
Very smart and helpful explanation thanks
This was a great video!! What an amazing fix tip, ty
@@ajaj4057 Thanks! Glad this video was helpful 🙂
Great production. Well executed
@@supairdave1 Thanks! 🙂
excellent video,im having the same issue with my grand caravan
Great video straight forward no bs. Think you can do a video on steering angle sensor calibration and a good scanning tool to use for the job?
A good alignment machine like Hunter, you verify the wheels are perfectly straight ahead
Clear and helpful thank you!
I picked up this scan tool ''ThinkScan Plus S4'' to read these modules ABS SRS ECM TCM BCM and give me live data,, only ran me $137 on ebay. I also picked up an extension cord to go with it,,, ''3FT 16 Pin Car OBDII Male to Female Extension Cable'' for $11, I can set my scanner in the pass seat to see live data as I drive carefully around!! Been had a couple electrical meters,, old industrial electrician. To read your codes you MUST have an interface to ''talk'' with your car's computers!
great video, informative, straight to the point, easy to understand. excellent lighting and sound. very professional. 👍👍
Good video but I would add one caveat. It's not necessarily the sensor, it could be the reluctor/tone ring that is acting up.
Great video, I think there is one problem with your signal generator test tho, what if it is a broken connection in the + feed from the ECU to the sensor? That will not show if you don't test that pin on the connector, or am I thinking wrong?
I saw a comment on a Toyota sensor having a much lesser value when Ohm-metering, I guess that is a coil-type sensor, while the one you are testing is a Hall element?
really helpful video worth being on youtube🌊
Very good welldone I have learned a lot from this thanks.
thought it was Neil Patrick Harris fucking with me here "like wtf i need to stop smoking !!!🤣
Thank you. Excellent information
I have a signal generator, but not the one specifically for the ABS, what voltage amplitude should I use for the sine wave? Is 1V peak to peak OK? I will look at the signal with an oscilloscope at the ABS module, I just don't want to use too large of a signal and possibly damage some circuitry.
I'd love to know this as well
Grate explain thanks partner
It's very well informative video thak you so much for let me know
Very good video. Thanks
Awesome video. I really like the signal generator method. It's so fancy. Would I be able to test my abs module with a keyboard Synthesizer? Haha! I'm kidding!
thanks for the explanation ...much appreciated
Thanks just so i kno what i am looking at
Excellent test thanks
Great video, just one question? When you connects the test leads on the connectors the polarity does not matters? If does how you know which is which? Thank-you keep up the good work, let me know my question,cheers for from ontario ca. I just subscribed to your channel
Great video , thanks for sharing .
Awesome video thanks
The Wheel Speed Sensor might be a Hall Effect component.
Since this is a semiconductor device then, when you are doing Ohms testing, you should really measure Ohms once way, swap over the wires, then Ohms the other way (polarized). You might notice different readings when you do this on the ohmmeter. But nevertheless, both sides should match.
Excellent tutorial
This video was kinda useless to casual DIY'rs. the easier, cheaper way to test for a bad wheel speed sensor is this:
1. Disconnect the wheel speed sensor connector.
2. Find the two-pin connector that leads to the sensor. Connect it to a multimeter.
3. Set the multimeter to ohms.
4. Measure the resistance. It should be minimal. If the meter indicates an open condition (very high resistance) or a short, the sensor is bad.
5. Next, if the sensor passes the resistance test, set the meter to measure AC voltage.
6. Have a buddy manually spin the wheel hub. Have them do it as fast as possible. Watch the voltage on the multimeter. If it changes in accordance with the speed at which the wheel hub is rotating, the sensor should be fine. If there’s no change, or no voltage read, then the sensor is likely bad. (The amount of voltage produced is very minimal, and completely safe.)
7. Repeat the above steps as needed with the rest of the wheel speed sensors on your car.
thanks for this helpful video ! i have a question : i bought a Oscilloscope that generate signal output like your tool ! Model is : DSO-TC3 !!! i can do everything like your tool but when i connect my wire to the signal of the connector or the speed sensor wire , the mp/h doesnt go up on my scanner !!!! so my question is : how much output voltage do generate your tool ? mine do generate max 3.3 volt so i think i need a tool that generate more Output voltage so i can send Hertz to abs/speed sensor wire for see a reading on my scanner ...
I prefer the lab scope, if you scope the signal you can see glitches the scanner might not pick up, and if the wheel bearing is missing a tooth on the encoder you’d also see that on the lab scope
I tend to agree. A scope will give you more precise and accurate real time information. A scan tool will help point you to which wheel speed is causing trouble but that doesn't mean it's the sensor at fault. That's when I'll grab my pocket scope and continue the diag 👍
Excellent video
nice job bud
@@williambailey9917 Thanks 🙂
Nice job!
Hi!
No idea, but:
Would it be possible to spin the wheel for to see, if a sensor ist working? May be with the help of a Multimetre?
Greetings from Germany
Lars
issue with the oscillator/generator is you need live data on the diagnostic tool which ups the cost of that end too - hoping to just eliminate bad sensor and check voltage on wires hopefully.
Good job man
Thanks
Great video. Thanks
Hi, nice and informative video. What type of wheel speed sensor this vehicle has?
Good question. This is a variable reluctance sensor. It produces its own voltage as the reluctor wheel passes by the sensor. It's been around a long time. Many new cars now have what's called a magneto resistive sensor. It works on different principles. It would be nice to make another video that focuses on the new technology.
@@ValleyMobileAutomotive Hi, thanks for your reply. Yes, if you make another video for Magneto Resistive Sensor it would help us a lot. Thanks.
Thanks Bro!
very helpful advice
Thanks Andrew 👍
Will this read a Volvo 2009 S60 system?
SAS calibration and wheel speed sensor testing??
Thank You
Great Video
It should be able to 👍
Broooo
You're such a legend
Firstly, thank you that was super useful.
Secondly, you should have a read of the bible man 😀
Thank you sir 🔥🔥🙌🙌🙌🙌🙌🙌🙌
Good video. I have a 2011 Kia soul+ auto with an intermittent ESC light. It generally comes on in the summer time in the hot weather. When it does, we lose power and must turn it off to continue driving. I have just a basic scanner from Amazon (no abs) and no fault codes show up on it. Does the fault/light need to be active for it to show up on my scanner? I've read it could be wheel sensor or brake stop switch. I really don't want to be buying and replacing parts that aren't faulty. I don't have all the tools you have to diagnose. Recommendations? Thanks again.
Hey Bryce, some fault codes will stay stored in history for a little while even though the light is out. You don't need a super expensive scan tool but one that can read abs codes Is a must. The codes won't show up on a tool that only scans the engine computer. You can also take it to an auto parts store like AutoZone and see if they can read the codes. It's free and that may give you a direction to start with.
cool video! i am a DIY person! i have a problem with my right wheel ABS sensor electrical fault saying volatge too low. I got this scanned from a mechanic and wouldt trust to leave my vehicle for any repairs. would you suggest me some solution?! i own a 2019 VW polo GT TSI petrol. thanks.
Thanks!
Thanks Richard! I appreciate the support 🙂
Are there any fuses to check that may cause the traction control light to come on? I have 2 codes P1776 P1777 on a 2014 Mini Countryman
Hi thank you
Mine read ABS and RF wheel speed sensor. Drove it home and ABS didn't last 5 miles before light came on again, and started pulsing when I stopped. Then hooked up reader and it said LF sensor. Cleaned the ground for the ABS for kicks, and cleared codes. Took it for a drive and when I got back now it say the RF sensor is bad again. Am I looking at a bad ABS? 2008 Trailblazer. But only a sensor code this time, but ABS light is back on again, along with Stabilitrac. If I don't disable stabilitrac it will not hardly move.
Where can I get tools used?
The bearing could have a bad refluctor ring and the sensor could be giving an erratic signal. A small hand held scope hooked to the connector and spinning the tire will show you on screen your exact ac pattern and if you have a tooth missing from that ring that is causing the issue. It will show up in the wave form on your pocket oscilloscope and you will see it.
@@jpol3808 Excellent comment! I didn't mention anything about the tone ring just the sensor but a bad tone ring can also cause the abs light to come on 👍
@ValleyMobileAutomotive You got this buddy. Great video and keep them coming. I'm an old mechanic and no one can remember or know everything. Thanks for the reply and take care! J Poll. 👏✌️🏁🇺🇸
A question. I assume the wheel sensors are just a magnetic pick up catching the magnetism from a rotating magnet on the rear axes and wheel bearing on the front. Could the sensor be tested by either a continuity or resistance test by rotating the wheel slowly by hand?
There are two main types of sensors. "Variable reluctance" producing a sign wave and "magneto resistive " producing a square wage. You can have either a stationary magnet in the sensor and a moving metal tone ring or you can have the magnet moving as part of the wheel bearing. It's cool technology that's also used for the crank position sensor and cam position sensors.
The ohm reading won't work unless you have the code saying which speed sensor is bad, in my case I am not getting a different code for the left or the right I'm just getting a code for bad wheel sensor. Because there's nothing to compare it to what if all four speed sensors are bad or three out of four or both front or both rears are bad, the only thing I could think of would be to go to the auto parts store and see if they will let you test a new one that they have on the Shelf and then compare the ohms
What are those two green connectors under the dash? I plugged them in and the check engine started to flash and gave me a park neutral switch code
What make and model scanner did you use.thanks
Launch X431
Why not save all that work and just test each sensor with a multimeter? If they make voltage, then they work. Make sure to switch to A/C volts on multimeter because magnets are used in the sensor.
I have a 2007 Toyota Camry sensor right front is bad I changed it light stayed off it comes on periodically now it stays on all the time what should I do
Two questions: is the light on for the same sensor (right front) and what brand sensor did you use?
Two thoughts come to mind. Either the sensor is faulty again (my first thought) or it's a wiring problem that was temporarily fixed while moving things around during replacement and now the wire fault is back (less likely).
@@ValleyMobileAutomotive hi i had the same thing. but this is the second time i replaced it. the errors were gone I drove something with 15 km and is back. the garage said they taped something with cables when they replaced it. It could be wiring problems.? the first time when I went to replace it, nothing had happened, the errors had come right away. and is it normal that when I open the car that I immediately get the errors (handbrake)? Please help i stuck with this problem for 5 months.
@@ValleyMobileAutomotive and I went to see with the diagnostic tool what the reading things are. back and front left reads well.but right front nothing he is at 0 and the other just good.
What do you mean by circuit unplugged?
Do I need a scan tool or just a signal generator for testing ? Thanks!
Yes, you'll need a scan tool capable of communicating with the ABS control module. The signal generator is for testing the wire integrity from the speed sensor to the ABS computer. The only way to know if the computer is picking up the signal is by looking at scan data.
@@ValleyMobileAutomotive I already have a scan tool (on my phone), but when I select "Live data" option, it doesn't give any readings from the abs sensors, so I'm not sure if the signal generator will help me to get readings on my scan tool. Thank you for your quick response !
Hello i have cod c1200 front left wheel.. and i buy new one and clean code but after 4days abs tcs appear.. I measure data from abs sensor socket its not correct like right socket i shake wire in control module abs to correct data and data is good and clear Fault after 3..4 day abs light is appear what i can do with c1200 code..?
good video but way too complicated for Me. I from Prosser years ago....GOD BLESS TEXAS!!!
Could this cause the wrong speed showing up on the cluster? Mine reads like 10 miles per hour under
Not that I have seen. What kind of car is it?