[gordon_gjs]

Well I have taken the wheels off to inspect the abs sensors and everything looked ok, but the sensor seems to be deep inside the hub and I was unable to see if maybe it was damaged. But I did notice the cv axels leaking grease. So now I need to replace them.
Is there a way I can test the abs sensors to ensure they are working or bad? I dont want to replace the bearing hub If it is not broke. Could it also be the ABS pump/box/computer (not sure of the name)???