Originally Posted by chuck0505
I was doing some research on this site and a user had a similar problem with there unit and it was the DRL Module (day time running lights). My DRL Module is in need of replacement aswell as I have no Day time lights. I was wondering if anyone had anyother suggestions for me.
I looked at the schematics and couldn't find anything in common (fuses, grounds, etc.) between the DRLs and the 4x4 SOTF system.
Of course, you would want to be sure that all
of the fuses, grounds and connectors have been inspected.
The fuses that relate to the 2001 4x4 system are:
5, 9, 10, 11, 28 - Dash box;
13 - Underhood distribution box.
G201 - Under passenger side kick panel;
G204 - Below the dash on top of the trans tunnel near the RCM.
There are connectors right at the T/C motor and at the 4x4 Module, of course. A real troublemaker can be the large 40-pin intermediate connector under the truck directly below the driver seat. It has been known to get water/corrosion inside and is especially susceptible in trucks used in damp climates with road salt. Even if it looks OK now, it's good preventative maintenance to apply some dielectric compound to the pins to help prevent future problems.
If the above turns up nothing, my next stop would be the Ford dealer to see if they could retrieve any trouble codes from the 4x4 module.