4X4 quit working? - Ford Explorer Forum - Forums for Ford Explorer Enthusiasts
Ford Explorer Forum - Forums for Ford Explorer Enthusiasts


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-08-2018, 10:35 PM   #1
Sporty-Mick
Junior Member
 
Join Date: Feb 2018
Location: Abbotsford,BC,Canada
Posts: 3
4X4 quit working?

Hello All:

I have an 02 sport,4.0,auto,4x4. Suddenly my 4 wheel drive has stopped working. When I switch the knob nothing happens. No lights,no sounds. It worked flawlessly all winter!

The only thing I've done is pulled the instrument cluster out to fix a few burnt out bulbs. Could I have forgotten to plug something back in to the cluster?

I've checked all the fuses and relays,switch has harness plugged into it. I'm at a loss. hope someone has a solution for me!

Thanks
Mickey

Sporty-Mick is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-09-2018, 08:11 AM   #2
J_C
Senior Member
 
Join Date: Apr 2016
Posts: 632
First as a sanity check, I would check all fuses. There should be a fuse diagram in your owner's manual, in particular there should be a larger fuse, "maybe" in the under hood power distribution box, that goes to the shift control module.

There may be another going to the accessory delay circuit that's also needed, and then on the interior fuse panel, one going to the battery saver relay. I'd just take a multimeter and probe into the back of all fuses to check continuity.

Backing up a bit you could check from the other end, whether there is 12V on the brown wire going to the transfer case clutch coil.

While I'm not aware of anything involving the instrument cluster itself that would need plugged in, there is probably a torque on demand relay (solid state, does not look like other relays in the vehicle) roughly behind the radio. This location is only a guess, they might've moved some things around in an '02 Sport compared to earlier Explorers.

I take that back, is it possible that your 4WD is working but it's just that the light for it isn't? The power for that light seems to come from the instrument illumination circuit but I don't know where it connects physically.

I'd also measure resistance across the 4WD bulb to make sure it's not burnt out, or if they had switched to an LED then "some" meters can check those with a diode test mode.

Anyway if you have 12V going to the transfer case clutch coil on the brown wire and you're sure it's not engaging 4WD then it's a problem in the transfer case, but from what I can tell the 4WD light should be on, assuming not burnt out, assuming there is only ONE thing wrong.

The vehicle is now 16 years old, it could be something unrelated to the dash like just that the 4WD switch has dirty contacts or has failed. Again I don't know if it is the same setup as the past generation Explorers but if it is (and these wire colors Might Be Wrong) then you should have a white/light-blue wiring coming from the GEM and a gray/red wire going back to the GEM.

Changing the switch position should vary the resistance across the switch from maybe 3.9K Ohms in one position to 1.1K to 360 Ohms in the 3rd position... assuming 3 switch positions.

Here is a wiring diagram for a 2nd gen Explorer 4WD setup. I am not certain how much yours might have changed - or it might be identical.

__________________
Please post your vehicle year/model/engine/(n)WD in help topics.

'98 Explorer XLT 4L SOHC 4WD
'14 Explorer XLT 3.5L NA AWD
J_C is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
The Comet that Wouldn't Quit Stillaford Off Topic 14 07-21-2010 02:19 AM
A/C not working 4D2Envy 2nd Generation Explorers | 1995-2001 4 05-24-2008 09:30 AM
A/C Not Working xnewengx76 2nd Generation Explorers | 1995-2001 1 05-07-2008 06:02 PM
working on the X GregMcCool Audio / Video / Security 40 08-21-2006 12:56 PM
I have got to quit spending... CobraXP Off Topic 13 06-04-2006 12:37 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 07:00 AM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.

ExplorerTalk.com is in no way associated with or endorsed by Ford Motor Company.

 

Content Relevant URLs by vBSEO 3.6.0