01 explorer sport no 4wheel high no light

[bdkrsk]

hello all
after reading a ton of threads for hours and getting nowhere , i'm reaching out for joe [gijoecam] . joe i have a 2001 explorer sport auto tranny . today while driving to work in 4wheel high i noticed the light 4wheel high was not on anymore and the switch was still in 4wheel high . i turned the switch back to 2wheel drive and then again to 4wheel high and still no light . when i got to work i tried it again in the parking lot and still no light . i turned the truck off and back on and the 4wheel high and 4wheel low lights went on with the rest , but same thing , switch in 4wheel high and still no light . the abs light is off and there working fine . can you give me the correct proceedure for troubleshooting this problem . a-millon thanks for any and all help , bob

 

[victorv613]

You say there is no light but is the 4wd engaging?

 

[bdkrsk]

nope no 4wheel engaging !!!!

 

[bdkrsk]

Anyone any help at all ?????

 

[albi1cnobi1]

Do you get anything in 4lo?

 

[bdkrsk]

nope nothing in 4wheel low either ?????????????

 

[albi1cnobi1]

It sounds like you've got no power to the shift control module. In the battery junction box under the hood there is a large 20 amp fuse( in position #6) that controls shift functions. Start there and we'll see what you've got.

 

[bdkrsk]

now it's working again and i've done nothing . maybe something was lose that i touched while checking ?????????? i turned it on and off several times , several different days and it seems to be working fine again ???????????? i'm baffled ?????????? thanks for the help . but if theres anything that you think i should check or change please let me know . i know when it snows again and the wife needs it , it wount be working .. thanks again . bob

 

[ncranchero]

Did you fudge with the 4x4 module behind the right kick panel? It's well known to get a bit of corrosion on the connector and fail to operate. Unplugging/plugging back often breaks that glaze and it goes back to working.

 

[bdkrsk]

no but i'll keep that in mind for the next time . i only checked fuses , i pulled them out , wire brushed them , sparyed the female socket with electric cleaner and reinstalled them .. i removed the wire from the 4wheel drive switch and did the same thing .. but it didn't work after that , it started working a few days later ???????????????