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Hi my name is***** see if I can help. This one can be a tough one to track down especially if don't have a high end scan tool that will access the 4WD control module. A cheap scan tool will only give you generic code and not the ones you will need to track down this problem. With that said do you have any codes related to this.
What scan tool did you use the cheaper ones will not give you the codes for this module
OK Here we go.
1. Check the fuses of the 4WD shift control module. This would include fuse 33 (15 amp) and fuse 45 (10 amp) of the Central Junction Box (CJB). Fuse 34 (10 amp) is used on early production models and fuse 19 (10 amp) is used on late production models.2. Access the 4WD shift control module located under the passenger side of the instrument panel for power and ground testing.3. A Black/Pink (BK/PK) wire supplies ignition-fed battery voltage to pin 14 of the C281c connector from fuse 33. A Red/Yellow (RD/YE) wire supplies ignition-fed battery voltage to pin 18 of the C281a connector. A Light Blue/Pink (LB/PK) wire supplies hot-at-all-times power to pins 5 and 11 of the C281c connector if the vehicle is "early production". These two pins of the C281c connector are Pink/White (PK/WH) wire from fuse 19 if the vehicle is "late production:.4. A Black (BK) wire supplies a ground at pin 26 of the C281a connector.5. Check the International Standards Organization (ISO) communication circuit for a possible open between pin 25 of the C281a connector of the module and On-Board Diagnostics II (OBD2) connector (pin 7).6. If all power and ground circuits check to be OK and the ISO communication circuit is good, replace the suspect 4WD control module. Be aware, the 4WD module normally has to be programmed with a factory scanner or passthru device if replaced.
I know you have checked fuses but I'm going to be as thorough as possible.
For all of these test the key will need to be in the run position.
A test light will work for 1 trough 5 I would use DVM on number 6.
We are checking to see if the module has every thing it needs to boot up and come on the switch position at this time doesn't matter
The key needs to be in run position then you are ready to go.
Did you find the problem?
You need to check every thing in paragraph 3. Sorry it took me so long to get back getting things ready in case power goes out.
The blue pink is for early model pink white is what you have and it should have power. The black should have ground to test the ground hook your clip on your test light to positive and the tip to the ground wire (Black). If pink white does not have power let me know and I will pull up a diagram and help you find the problem there.
It appears the module is bad It would be good to have it checked with a scan tool that can access that module. im 90 percent sure it is that module. I would have some one to try to access the module with a scan tool if it did not respond then I would replace it.
Ford or junk yard to program it would have to be ford or an independent shop that has a programmer. I would call around. You may be able to find it on line cheaper.