2007 Toyota FJ Cruiser -Hurt Locker

toyota

#1

The rear diff locker in my 2007 FJ Cruiser 4WD AT will just not engage. When the truck is in 4LO and the diff lock switch is pressed, the dash indicator light (red) keeps blinking but will not turn solid.

Has anyone experienced this behavior and what can be done to confirm if the locker has gone bad or if it is a switch / electrical problem?