Novak Conversions Jeep Wrangler JK radiators

Troubleshooting Wheel Speed Sensors With J-Scan

Danarch said:
Replaced the WSS today. Is there a way to
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Danarch said:
Replaced the WSS today. Is there a way to know if the one removed was OEM? The new one had a part number and pink mark. The one removed doesn’t have any part numbers or markings. Since the other one did thinking the removed was not OEM.

Update - took for a drive and no lights. Of course its been 3 or 4 days since it came on anyways.
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All OEM sensors that I've seen have the part number on them so I think you're correct, the one removed probably was not Mopar
 
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I got one that is borderline in sensing wheel speed. It doesn't stop working long enough to throw a code.
When it now and then stops working for a few seconds it shuts off the cruise control. I'll put my analyzer on it tomorrow and track down the little rascal and replace it.
 
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Hi everyone, JKU 2014 here. I have what I supposed was a wheel speed sensor issue but replaced the sensor and still get all the error lights. Just scanned everything again with jscan and got something weird.

264148498_323556182739178_8476335278612073111_n.jpg


Bussed speed differs from actual wheel speed. Any clue on this issue?

Thanks in advance.

264148498_323556182739178_8476335278612073111_n.jpg
 
You might need to clean out any debris on the tone ring - something may be contributing to a false reading. It may well be the harness, too. Is this reading the same as the original speed sensor? You can buy a replacement harness pig tail, but check the wires/contacts for any issues.
 
Yes, used a genuine Mopar speed sensor.
Wheel speed sensor reads actual speed ok, but bussed input (which I don't have a clue of what it is supposed to be) shows an incorrect reading. All usual lights are on. Abs track control, hill descent

Thanks in advance!
 
Tobal said:
Yes, used a genuine Mopar speed sensor.
Wheel speed sensor reads actual speed ok, but bussed input (which I don't have a clue of what it is supposed to be) shows an incorrect reading. All usual lights are on. Abs track control, hill descent

Thanks in advance!
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Is it possible that you could have a cable with a bad spot somewhere for that sensor? If it's going to ground it could possibly be the reason.
 
I will check the wiring. The strange thing is that the actual reading from the sensor is correct, as you can see from the picture. Just "bussed input" (which I don't have a clue what it means) is faulty.
 
Reviving an old one here to say that our 2015 JKU has an intermittent ABS light flash and sensor ding.
Was wondering if the iCar Pro & JScan would read the ABS codes and I found this thread and I’ll be reading for code’s tomorrow.
Thanks for the great write up; hopefully this will save me a service trip.
 
WestCoastDan said:
Reviving an old one here to say that our 2015 JKU has an intermittent ABS light flash and sensor ding.
Was wondering if the iCar Pro & JScan would read the ABS codes and I found this thread and I’ll be reading for code’s tomorrow.
Thanks for the great write up; hopefully this will save me a service trip.
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I had the sme issue with my 2015 jku. Jscan can definitely help you with this. You can monitor the wheel speed sensors, it will show you the revolutions of the 4 wheel sensors so you will see which one is not working. I purchased an OEM sensor from Rock Auto for half the price then the Stealership.
 
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2015 JKU similar issues. RF wheel speed sensor codes C101F, C101C and U150A. Initial repair found ABS tone ring broken. Replaced hub and sensor(aftermarket) 3 months later, same codes. Replaced sensor with OE. 4 months later, same codes and issues.
 
JerryD said:
I see a lot of threads asking for help troubleshooting symptoms, which is good. We can all learn from each other. A recent thread had someone using a code reader that actually indicated the problem was a speed sensor and which one it was. Nice! However, at $90, it still cost more than a $25 scanner and the app at $24. Now, there is a lot to be said for having a dedicated scan tool... portability, convenience, etc. but for those that have this particular app and are wondering how exactly to use it, I took some screen shots of HOW to show the wheels speed sensors when you get the the common symptoms: ABS Light/Traction Control Light on. There may be other symptoms, too. Can't recall... Its been a while since my last speed sensor went out, but here is the quick check you can do with the jScan app.

Start the app...

View attachment 118915

Select "Modules"

View attachment 118918

Select "Anti Lock Brakes"

View attachment 118919

Then "Live Data"

View attachment 118920

Click the orange circle with "..." to search for the appropriate PIDs. Type "wheel speed" in the search bar and select the LF (left front), LR (left rear), RF (right front), & RR (right rear) Wheel Speed sensors (mph) as shown below.

View attachment 118917

And you'll get this...

View attachment 118916

If this was a live shot (sorry, not that ambitious), it would show values as your are driving. A bad sensor would be zero as the others would have a value.

I wrote this to show what can be done with apps like these. I also use AppCar FCADiag, Torque and OBDLink, the latter really just for monitoring. Anyway, whatever product you use, learn HOW to use it. And when you are successful, post up the steps so that others can learn.

Chris, if this is too long or irrelevant, it won't hurt my feelings if you delete. I just want to encourage people to learn the tools that are available.
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Thanks for this . I have JSCAN and troubleshooting a wheel speed sensor... THis really helps.
 
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