abs problems

can anybody tell me where the abs sensors are located on the front wheels of a 2006 tacoma 4x4?

went wheeling this weekend and ever since my brakes have been weird and the abs light comes and goes.
(doesn't flash, just shows up for a few minutes, goes away for a while, and so on.)

hoping that cleaning the sensors will help. anybody have any experience with this or a similar story?

 

Go here: http://www.parksoffroad.com/tacomamods/tcspindlesprocomplift/tcspindlesprocomplift.htm

The Third pictures down shows where the sensor goes into the Hub. It is held in by one bolt.

 

^Pictures are for a 1st gen, but installation is similar on 2nd gen:
http://www.customtacos.com/tech/fil...6toyrm/06toypdf/06rmsrc/rm2006ta/04100410.pdf