Originally Posted by
REALTREE-F150
checked vehicle out a little further today. all fuses have power and are ok, but i never get power down at the actuator motor or at the switch in the dash. does anyone know where i should go from here ? does this unit actually have its own control unit for the 4wd ? what else is it looking for ( besides switch being turned ) before it will engage ? anyone have a wiring schematic of the 4wd circuit ?
The 4WD system is controlled by the GEM computer. If you pull the radio it is on the left side in that area. Try to wiggle/reseat that connector and see what happens. They sometimes have connector issues.
Anything more you need a wiring diagram. Everything 4wd related (4wd dashlights, torque on demand, shift motor) comes from that box. That box also controls wipers, cruise control, windows, wife's mood.....
I highly suggest getting a ford service dvd on ebay if you want to do anything further....they are cheap and can solve many issues inexpensively.