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Dan
Dan, Technician
Category: Ford
Satisfied Customers: 23682
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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1999 super duty 4wheel dr relay location no power to selector switch

Resolved Question:

1999 super duty 4wheel dr relay location no power to selector switch
Submitted: 5 years ago.
Category: Ford
Expert:  Dan replied 5 years ago.

Welcome to JustAnswer, my name is XXXXX XXXXX I'm here to help get your problem resolved. Ask follow up questions, thanks.

 

The switch isnt provided power. Here is a picture and wire diagram of system, let me know if you have questions. Thanks.

 

http://i386.photobucket.com/albums/oo303/djenn434/Uploads/relay_0000.jpg

 

http://i386.photobucket.com/albums/oo303/djenn434/Uploads/1-1.png

 

http://i386.photobucket.com/albums/oo303/djenn434/Uploads/2-1.png

 

http://i386.photobucket.com/albums/oo303/djenn434/Uploads/3.png

Dan and 4 other Ford Specialists are ready to help you
Customer: replied 5 years ago.
dan do you have better pic of relay location? what is most common problem relays or shift motor or sel switch
Expert:  Dan replied 5 years ago.
When you select a mode does the light turn on as if it should be working?
Customer: replied 5 years ago.
no light had been working fine lost 4wdr when light quit
Expert:  Dan replied 5 years ago.
At the switch check resistance where the dark blue wire and white/light blue wires go into the switch and monitor resistance while switching it from off, low, to high to see if resistance changes if not replace switch.......If good it sounds like the problem is the GEM General Electric Module...You will need to test power/grounds at the GEM and replace if good. The GEM is located above the parking brake area. Let me know if you run into questions, thanks.
Customer: replied 5 years ago.
thanks dan glad i found this site have no books on this pkup will check out switch and gem module
Expert:  Dan replied 5 years ago.
Let me know if you run into questions, thanks.