possible elocker problem

hopefully im not the only one with this problem... from time to time my locker indicator light along with the abs light will mysteriouly come on without hitting the switch. the locker dosent actually engage but the abs definately dosent work when this happens. the locker itself seems to work flawless. anyone got any ideas

truck is a 2001 ex cab taco 3.4

 

There is a switch on top of the rear axle that Toyota refers to as a "Diff. lock indicator switch". I had the same symptoms twice now and replacing this switch solved the problem (on my 2005). Switches are known for shorting out from time to time, fooling the ECU into thinking the e locker is engaged, therefore disengaging the ABS.

 

yep 4x4