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Help 4wd problem

Old Sep 29, 2011 | 02:07 PM
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Help 4wd problem

ive have an 03 f350 4wd that the trans case will not lock in 4wd,there is no power to the accuator motor, no power to the on dash s/w, all of the fuses are good. i have been told that there is a module? between the dash s/w and the fuse box that the power goes through, no one can tell me where it is what it looks like or what it does so any info would be great.
 
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Old Sep 29, 2011 | 03:29 PM
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Read the following post. It is something I wrote some time ago to help in diagnosing transfer case shift problems.

https://www.ford-trucks.com/forums/1...l#post10605244
 
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Old Sep 29, 2011 | 03:47 PM
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thanks loads great info now the only gray area is where is this 4wd module located that you refer to, thanks again
 
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Old Sep 29, 2011 | 03:50 PM
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The 4WD control module is behind the glove box.

But I wouldn't even consider going there until you've exhausted ALL other possibilities.
 
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