I need 4x4 selector switch specifications for ohms testing on 2006 ford f150 4x4

What type of vehicle is this? I'm assuming you have a part time transfer case with the 4h,4l and 2h selector switch.
Without knowing the vehicle I can't be certain, but the problem you are describing sounds like the Encoder Motor on your transfer case has gone bad.
Can you hear any noise when you try to select a gear range?

Those older fords you have to put the 4x4 selector into 2H or 2 High on the floor shifter. Then go to the front tires and in the very center of the tire there will be a knob that say Locked and Unlocked. Turn the knob to unlocked on both sides. Then you will not have front wheel dragging on the drive train and only the rear wheels will be the drive tire. TO put it back in 4x4. Turn the knob back to locked on each front tire and put the truck in 4H or 4 High to get 4x4. Only use 4L or 4Low when your stuck to prevent spinning your tires with full power.


Now if your has the automatic locking hubs I would switch them out with manual ones because the automatic ones were problematic where they get stuck or not work at all. It requires replacing the locking hub assembly which isn't that hard to do.

If it isn't a heat shield or something like that,
then your pulling the transfer & taking it apart

Google your transfer mfg case or unit number & see what
problems come up

Call this place
They have a web site

Drivetrain.Com

try putting the car in neutral before switching
if it does not work let me know

The switch could be bad, but if you cannot select 4H or 2H, I would think the shift motor in the transfer case is the issue.
This is assuming when you posted "control switch be bad", that you have an ESOF ( Electronic Shift on the Fly ) system.

Some times the Shift motor in the transfer case hangs up, and tapping the back of the transfer case cures the problem. The other thing could be the connector on the transfer case is corroded, remove the connector, and check it for water and other junk, clean if necessary.

You can remove the switch from the dash, and check the resistance on it.


If you secure the truck ( chock the wheels, parking brake, etc ) and having someone turn the ESOF switch from 4L to 2H or 4H, while tapping on the transfer case, this would be a good place to start.

Most likely the controller module is bad, or the actuator for the front axle has gone bad.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

You can try several things. You can stop the vehicle as if you are going into low range and shift the high range 2h, 4h, etc.. Ford advertises the Electric button type as "shift on the fly" but does not say the gears are synchronized to do that with manual engagement.

Change the lube this time to see if the lube is Milky. There have been floods, otherwise the case is sealed whether you park it or drive it. You still could have rust on the shift linkage. You need to move the linkage as you spray it. Then the offbeat chance something was bent from offroading. A Salvage Yard is a wonderful place to learn how a car is built. You may see their part looks different than yours.

no you have it reversed....if the light is on its in awd if its off its not

change the 2 solenoids on the firewall on the passenger side. they contol the vacum to the acuator.