A Look At GM Digital ABS Wheel Speed Sensor
video description
Date: 2020-08-05
Related videos
Comments and reviews: 10
Andrew
European cars started using that system almost 20 years ago, but usually BMW sheild the ferromagnetic ring in the bearing seal better from the elemets better than on that Chevy also BMW and Merc and LandRover normally protect the connectors by locating them inside the trunk or under the hood. Normally this style are more reliable than the old style toothed rings but wheel bearing wear can cause issues.
On Bosch system quick test is if the ABS light comes back on immediately the key is switched on it is a eletctrical fault, either sensor or wiring also if it fails the circuit integrity test the ABS module will shut off the 11. 4 to 12v supplies to the sensor.
If the ABS light goes out normally then back on after 10 meters or so it is usually a wheel bearing issue.
reply
European cars started using that system almost 20 years ago, but usually BMW sheild the ferromagnetic ring in the bearing seal better from the elemets better than on that Chevy also BMW and Merc and LandRover normally protect the connectors by locating them inside the trunk or under the hood. Normally this style are more reliable than the old style toothed rings but wheel bearing wear can cause issues.
On Bosch system quick test is if the ABS light comes back on immediately the key is switched on it is a eletctrical fault, either sensor or wiring also if it fails the circuit integrity test the ABS module will shut off the 11. 4 to 12v supplies to the sensor.
If the ABS light goes out normally then back on after 10 meters or so it is usually a wheel bearing issue.
reply
Ryan
these a commonly known as magneto resistive wss, generaly are surplied with a voltage around 11-12v then the signal return will match the power surply until the wheel is spun and the window is blocked which causes the voltage to drop down. but not much at all giving u a hall effect type square wave. generally used more often in newer cars now as they are considered more reliable and accurate at lower speeds, fairly easy system to diagnose. good video eric
reply
these a commonly known as magneto resistive wss, generaly are surplied with a voltage around 11-12v then the signal return will match the power surply until the wheel is spun and the window is blocked which causes the voltage to drop down. but not much at all giving u a hall effect type square wave. generally used more often in newer cars now as they are considered more reliable and accurate at lower speeds, fairly easy system to diagnose. good video eric
reply
spelunkerd
Great demo, it would have been a tricky diagnosis without careful inspection, and the Pico clinched the deal. I've spent years hand-wringing over which labscope to get and I think I've decided on the Pico. I like the idea of a waveform library although it would have to be pretty extensive to be of general value.
reply
Great demo, it would have been a tricky diagnosis without careful inspection, and the Pico clinched the deal. I've spent years hand-wringing over which labscope to get and I think I've decided on the Pico. I like the idea of a waveform library although it would have to be pretty extensive to be of general value.
reply
Hayward's
Nice video and analysis! Man the rust makes it harder to work on but it also brings in a lot of work. That bearing would last forever down here. Nice Pico waveform. mine will be here next Wednesday and watching as many training videos as I can until I find myself passed out drooling at wee hours of the morning: O
reply
Nice video and analysis! Man the rust makes it harder to work on but it also brings in a lot of work. That bearing would last forever down here. Nice Pico waveform. mine will be here next Wednesday and watching as many training videos as I can until I find myself passed out drooling at wee hours of the morning: O
reply
Frank
I'd like to thank the brilliant engineers who had the wonderful idea of putting the wheel speed sensor inside the hub assembly. Because of their brilliant thinking, I now have to change a perfectly good 160 wheel hub just to repair a bad 60 wheel speed sensor.
reply
I'd like to thank the brilliant engineers who had the wonderful idea of putting the wheel speed sensor inside the hub assembly. Because of their brilliant thinking, I now have to change a perfectly good 160 wheel hub just to repair a bad 60 wheel speed sensor.
reply
Jimmy
Got a FORD Focus with the same setup. I wonder why GM copied the Ford design.
Question. why did GM use a bearing hub that can accept a CV axle? Does that kind of bearing hub fall apart if there is no axle nut holding that assembly together?
reply
Got a FORD Focus with the same setup. I wonder why GM copied the Ford design.
Question. why did GM use a bearing hub that can accept a CV axle? Does that kind of bearing hub fall apart if there is no axle nut holding that assembly together?
reply
Lawrence
Thanks for the video, working through this with my 2011 Lacrosse. I don't have a scope or a fancy scan tool so I am hoping to find something in a visual inspection (so far the front looks fine. Can these sensors be tested with an ohm meter?
reply
Thanks for the video, working through this with my 2011 Lacrosse. I don't have a scope or a fancy scan tool so I am hoping to find something in a visual inspection (so far the front looks fine. Can these sensors be tested with an ohm meter?
reply
Jerrod
Hey Mr. O: Were you turning the wheel in opposite directions (forward vs. reverse) in the first part of the video vs later (before and after the hub change? I noticed the waveform was going in opposite directions. Just curious.
reply
Hey Mr. O: Were you turning the wheel in opposite directions (forward vs. reverse) in the first part of the video vs later (before and after the hub change? I noticed the waveform was going in opposite directions. Just curious.
reply
LE
Can this be done without an oscilloscope; with just a voltmeter?
I don't want to spring for a scope right now. Can I do a resistance test on a digital sensor? Can a standard multimeter read that high of resistance values?
reply
Can this be done without an oscilloscope; with just a voltmeter?
I don't want to spring for a scope right now. Can I do a resistance test on a digital sensor? Can a standard multimeter read that high of resistance values?
reply
LeGrande
As a younger tech, I grab the scope for diag work all the time. Whether it's truly fruitful or not I'm storing data. Boss always asks why I'm wasting time. Thanks for going the extra mile and sharing your experiences.
reply
As a younger tech, I grab the scope for diag work all the time. Whether it's truly fruitful or not I'm storing data. Boss always asks why I'm wasting time. Thanks for going the extra mile and sharing your experiences.
reply
Add a review, comment
Other channel videos
