If the ABS light is on we need to check for any trouble codes in the system. An advanced scanner or a scanner that is specific for checking ABS codes. Let me know what codes you find and I will look up the pin point tests and possible causes.
These can have a broken tone ring on one of the axles.
lets start here
we can make sure we have no other broken tone rings . And we can make sure we have good power and ground to the ABS module. The newer Ford ABS systems use active sensors, they cannot be tested by ohming them out. There are special testers or plugs that go in place of the sensors when testing them. I usually just verify the tone rings and then drive the vehicle with the IDS watching each wheel speed on live data.
You can disconnect each sensor and make sure you are getting power with key on.
let me know what you find
What the heck is an IDS? Do you actually think I have one? How 'bout you come down and we'll use yours..... Mike,.... I just need to know how to reset the bastard. I'm pretty certain I found and fixed the problem with the tone ring, I just need a reset.
RESET....PLEASE!! Thanks, jim
I am sorry. IDS is Fords advanced diagnostic tool.
I am not expecting you to use one, just letting you know how we do it, how important watching live data is when you have active wheel speed sensors.
I wish you could come down and I could look at the wheel speed data.
with active wheel speed sensors the ABS module does a test as soon as the key is on, checking the circuits before even moving. If the light goes on or stays on the problem is not fixed. There is no need to reset the ABS module, when a fault is found and fixed the light will go out. The fault codes will stay in the system as a history fault but will not cause the light to go on. We clear the codes and test drive to make sure there are no other issues.
Let me know if the tone ring hit the sensor, you may have replaced the tone ring but the sensor is bad.
Mike.....I replaced the defective tone ring AND the sensor, as I have already said. The code reader is still saying the SAME thing, there is no signal from the LF wheel. What else could it possibly be? There are no other components on the left front wheel. Now, it's not that I'm doubting your expertise, but this causes me to believe that there is some other way to reset this thing. Chances are it's not going to make a difference to you because you are in love with your IDS, but there is something I forgot to tell you: the red brake light AND the ABS light were on before I changed the parts, now only the ABS light is on.
If we still have the same code and both the tone ring and sensor have been replaced we either have a circuit problem for the L/F wheel sensor or the ABS module is the fault.
I will open the question for another expert, maybe someone else has seen this exact issue.
Please wait for another expert to respond, if you reply back to me it will stay locked on me.
Can you read the previous interaction between Iron Mike and myself? All the information about the tone rings etc. is contained therein. If you can, please go over it so I don't have to start at the beginning again.