Brakes pedal feels gritty/scraping.

[TTro33]

I have been doing the usual trying to get rid of the abs traction control service stability lights on the dash and replaces the front wheel bearing with new sensors and the right rear sensor.

So now that the lights are gone when you brake you feel feedback through the brake pedal, not abs rapid pulsating but a slow coming and going scraping feeling that pushes back against your foot.

If I disconnect a wheel sensor so that the abs is disengaged the brakes are smooth as can be. So I sent the ECBM or abs module off to get repaired and they told be there was nothing wrong with it and refunded me.

They said to check the body control module, or the hydraulic unit. Is the body control module involved with the abs system and could this be a symptom of a bad one?

 

[ccapehartusarmyINF.(ret)]

the only time ive felt that is when my brake pads were completely gone

 

[TTro33]

It has new pads all around, the key here is that is only feels that way when there are no service lights and the abs is disengaged.

 

[1BADI5]

Check the caliper slide pins.

If the boots are bad there might be some sand and road grime in there

 

[TTro33]

Thanks but when I go to the rear and unplug abs sensor to that the abs system is off then the brakes work fin and are smooth as can be.

 

[SLCHOE]

Thanks but when I go to the rear and unplug abs sensor to that the abs system is off then the brakes work fin and are smooth as can be.

You need a scantool that can display ABS live data, specifically all 4 wheel speed sensor rpms. Going down the road in a straight line, they shouls all read the same rpms.