07-08-2023, 06:07 AM
Can i just say that it's a pleasure to have you on the forum and explain the various aspects of your bike!
As Pekingduck has mentioned this could be the problem as well as a suspect connector at the end of the abs sensor cable.
Here is a picture of how the system is supposed to work;
As you can see it has a magnet inside the sensor and a coil around a soft steel core ( soft steel does not retain magnetism and reacts to a changing magnetic field ), as the teeth pass the sensor the magnetic strength changes ( it can conduct the magnetic field through the steel ring's " spokes " ) through the soft steel core which changes the magnetic field presented to the coil.
This change happens very quickly ( if you could hear it it would sound like a tone with a varying pitch ( this is how a hammond organ works ) the ecu reads this "tone" and checks for rapid changes in frequency, it makes a decision as to when to release the brake pressure if the brake light is on and prevent the wheel from losing traction.
If the sensor is too far away from the ring the change in intensity is not big enough for the ecu to react and when it is too close it only senses a constant magnetic field with the same malfunction, so it must be in the optimum place.
Here is a link to the article;
https://www.google.com/imgres?imgurl=htt...egUIARD0AQ
So after all that what to do?
There could be some steel dust on or near the sensing ( flat )surface of the sensor, so take it out of it's housing and see if there is any debris on it.
Also the "tone"ring is on the wheel and the sensor is on the hub of the brake assembly, when the tires are changed the gap could change ; https://www.partsfish.com/oemparts/a/hon...ke-caliper
If not do what Peking duck suggested and put some cardboard/paper spacer under the sensor, measure the new gap and see if that eliminates the erratic abs light.
Nice to see the measured gap values, you almost solved the issue i think and i hope we clarified how the system works.
As Pekingduck has mentioned this could be the problem as well as a suspect connector at the end of the abs sensor cable.
Here is a picture of how the system is supposed to work;
As you can see it has a magnet inside the sensor and a coil around a soft steel core ( soft steel does not retain magnetism and reacts to a changing magnetic field ), as the teeth pass the sensor the magnetic strength changes ( it can conduct the magnetic field through the steel ring's " spokes " ) through the soft steel core which changes the magnetic field presented to the coil.
This change happens very quickly ( if you could hear it it would sound like a tone with a varying pitch ( this is how a hammond organ works ) the ecu reads this "tone" and checks for rapid changes in frequency, it makes a decision as to when to release the brake pressure if the brake light is on and prevent the wheel from losing traction.
If the sensor is too far away from the ring the change in intensity is not big enough for the ecu to react and when it is too close it only senses a constant magnetic field with the same malfunction, so it must be in the optimum place.
Here is a link to the article;
https://www.google.com/imgres?imgurl=htt...egUIARD0AQ
So after all that what to do?
There could be some steel dust on or near the sensing ( flat )surface of the sensor, so take it out of it's housing and see if there is any debris on it.
Also the "tone"ring is on the wheel and the sensor is on the hub of the brake assembly, when the tires are changed the gap could change ; https://www.partsfish.com/oemparts/a/hon...ke-caliper
If not do what Peking duck suggested and put some cardboard/paper spacer under the sensor, measure the new gap and see if that eliminates the erratic abs light.
Nice to see the measured gap values, you almost solved the issue i think and i hope we clarified how the system works.