abs light and brake light illuminated

[Jake35]

Originally Posted by mark v

I should of took a picture of my rear brake sensors before I cleaned them when I did my rear brake job. If you saw what they both looked like you wouldnt think that cleaning helps.

You can put lots of dirt on a magnet and it will still read a signal through the dirt. These sensors were designed to do this.

My front left has a thick coating of road crap and brake dust and still works.

My right front failed. It is supposed to show like 2000 or so OHM's and read zero when I tested it.

I ohm'ed my sensors and all were between 1874 and 1925. The rear sensors were completely caked with brake dust. I used brake cleaner and paper towels to clean them off and reinstalled after I took the drums off and completely cleaned out the inside. Not that any of this worked to eliminate the ABS/E-brake lights, but its the cheapest and easiest thing to do to eliminate them as a cause.