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Old 03-25-2013, 10:00 AM
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4 Wheel Drive Easy Question

2003 6.0 F350 Crew Cab Dually
Where is the 4 Wheel Drive Control Module located and what does it look like? 4x4 indicator on dash comes on and goes off as it should when truck is first stated. Continuity tested all fuses...all good. No power on any wires to the 2H/4H/4L switch on dash. Obviously 4-Wheel will not engage.
Any help to diagnose would certainly be appreciated.
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Old 03-25-2013, 05:40 PM
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Check your fuses first. You need power to the switch before you go looking for relays. Search for ESOF.PDF.
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Old 03-26-2013, 08:41 AM
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Been there, did that. Continuity checked all fuses, not just visually inspected. All fuses are good.
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Old 03-26-2013, 09:06 AM
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The 4x4 module is to the right of the glove box, just pop it out and you can see it and it should have a big label on it saying something like 4x4 control module.
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Old 03-26-2013, 09:21 AM
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From what I had read only that is where people said it was located for the 2002, but was not sure if they changed it in the 03 version.
Thanks for the feedback, very much appreciated.
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Old 03-26-2013, 09:23 AM
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Yea thats possible thats what i saw that one in, its possible they moved it for the 7.3-6.0 transition. If anything you could just pop the glove box out and look its right there in the 2002.
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