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Need some info... 2002 Ford Explorer 4wd Not working

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Old 05-29-2011, 03:55 PM
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Question Need some info... 2002 Ford Explorer 4wd Not working

So my buddy's (who is not very net-saavy) 4x4 in his explorer is not working, no light comes on in the dash and won't shift into 4x4. So I offered to scan it for him using my Auto Enginuity with Ford package.

Well, found a couple O2 sensor codes.... but AE wouldn't read the 4x4 system.... said "communication failed" or something to that extent.

Would a bad 4wd Shift Control Module make the AE not be able to communicate with the powertrain and not be able to scan it?

Apreciate the help.
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Old 05-29-2011, 08:38 PM
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Old 05-31-2011, 01:34 AM
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Old 06-02-2011, 05:51 PM
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if you dont hear a click behind glovebox when you select 4High or 4low. then it couled be the 4x4 control module. it's behind glove box attached to the blower housing. replaced mine `2 yrs ago
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Old 06-02-2011, 10:55 PM
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Originally Posted by wg07701 View Post
if you dont hear a click behind glovebox when you select 4High or 4low. then it couled be the 4x4 control module. it's behind glove box attached to the blower housing. replaced mine `2 yrs ago
Thanks for the input.

Were pretty sure thats what it is, but I'm really trying to figure out if the 4x4 Control Module being bad would cause a No-Communication Fault on a scan tool.
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Old 06-03-2011, 07:55 PM
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Old 06-04-2011, 12:17 PM
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Try disconnecting the battery for 10 min, this sometimes allows the control module to reboot... Philip
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Old 06-04-2011, 04:04 PM
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Try disconnecting the battery for 10 min, this sometimes allows the control module to reboot... Philip
I'm pretty sure he tried that (Because he was trying to clear codes) but I will double-check.

Still trying to find out whether a bad 4x4 control module will cause a no-communication fault with AE!?!?
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