:devil: Does this mean that your ABS light comes on every time you wheelie? (Yes, if you ride on one wheel long enough for there to become a significant rotation difference between the front and rear wheel. Go try it.) By design it *should* be impossible for either wheel to have an incorrect ABS frequency for a given speed. The conditions where the ABS is commanded to activate is is generally more complex than just wheel rotation speed.The ABS will activate when the front and rear wheel speed sensors are not sending the same speed signal...
Do you get the ABS like feel when only using the front brake? Do you feel the ABS sensation when lightly using the back brake only? Seriously, do try this, read the next line and see why.
About 24k miles ago my FJR started making a high speed ABS like pulsing too. It coincided with changing from Pirelli tires to PR2s and it gets worse as the front tire wears. Dunno about other brands of tires but I would suspect tires long before the ABS.
Guess I forgot to mention all the infomation needed for the ABS to activate. Like the ignition must be on, the brakes must be applied, the ABS light must be out and some systems are programed to see that the wheel is slowing faster than possible for a safe stop on that vehicle and lock up is possible.
What else did I forget to mention.....you would need to ask the engineer that designed and tested that particular unit with that version of software.
As to addressing the wheel speed sensor differance... if one sensor has a wide air gap and will not generate a signal at low speeds, this can cause the controller to think one wheel is stopped, when in fact it is moving at the correct speed. Metal fillings stuck to the magnetic wheel speed sensor will also degrade the output signal
sometimes to the point of no signal at slow speed.
We had an employees Acura come in with a code set for the left wheel speed sensor, I recommended they test the output and resistance of the sensor. They did not want to put the car on the rack for testing and would check it out at home. The wheel bearing failed on the way home and it was the cause of the bad sensor reading. Couldn't diagnose that one without looking at the big picture.
Hope your finding your problem and it is just a minor repair.
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