Serious Explorations Ford Explorer and Ranger Message Board
#1 Resource for Ford Explorer and Ranger Owners - By Enthusiasts, for Enthusiasts.


Ford Explorer Generation Guide

EF Swag Store 2016 Ford Explorer Forums Elite Membership Chat Room My Posts Reviews Explorer Photo Gallery
Go Back   Ford Explorer and Ranger Forums "Serious Explorations" > Ford Explorer Ranger Repair - Troubleshooting - Modifications & Detailing Forums > Ford Explorer Sport Trac Forums > 2001-2005 Explorer Sport Trac

Notices

2001-2005 Explorer Sport Trac All questions related to the 2001-2005 Explorer Sport Trac model.

'01 Sport Trac 4x4 Issues (Will not turn on)

Reply
 
Thread Tools
Old 11-06-2010, 06:37 PM   #1
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Angry '01 Sport Trac 4x4 Issues (Will not turn on)

Hello everyone,

First off, I want to say thanks for reading my thread and giving any tips/advice in demand.

Ok...So my problem is my 4 wheel drive decided to stop working on me. So after reading a bunch of other forums, I have tried reconnecting the wire harnesses a couple times to the 4x4 control module, but that as not fixed the problem.

Neither the 4 high or 4 low works. If you switch it to either of these, nothing happens (no clicks/no lights). However, the 4 high and 4 low lights do flash on when starting the car. The wires and connections look good (no corrosion or bent prongs) I also tried some dielectric grease in the connections and still a no go.

How do I determine if it is the control module that is bad, or if it is something else?


Thanks!

P.S. I checked all the fuses and they are fine.
grzy is offline   Reply With Quote
( Join the Elite Explorers )

For only $20 per year you can become an Elite Explorer member. Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose and fix problems yourself, and learn which modifications really work without having to experiment on your own. Elite Explorer members can change the forum "styles" to eliminate most ads, including blue underlined links, and no ads on photos. Other benefits include the ability to store 1000 Private Messages, upload photo attachments directly to your posts and to our Photo Gallery and more. Join the Elite Explorers today.


Old 11-07-2010, 07:29 AM   #2
ncranchero
Co-moderator
Denver,NC
 
ncranchero's Avatar
'94 F150 4x4 SWB 4.9L
 
Join Date: Aug 2004
Posts: 3,695

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 10 Post(s)
Do the same for the connections at the shift motor as you did for the module.

No communication with the four-wheel drive (4WD) control module

Possible Sources
Four-wheel drive (4WD) control module.
Central Junction Box (CJB).
CJB fuse 35 (15A).
CJB fuse 10 (7.5A).
Circuitry.

If you can perform basic automotive electrical diagnostic operations just send me an e-mail and I'll send you the diagnostics from the Ford manual.




__________________
'14 Transit Connect 2.5L 16 Valve DOHC Duratec
'02 Escape XLT 3.0L 24 Valve DOHC Duratec 160k
'94 F150 4x4 4.9L/5-speed 160K miles,
How to post photos
ncranchero is offline   Reply With Quote
Old 11-07-2010, 07:40 AM   #3
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Thanks for your response. I will for sure do the same for the connections at the shift motor.

Thanks,
Mike
grzy is offline   Reply With Quote
Old 11-07-2010, 12:31 PM   #4
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
So, I checked the voltage readings from pins 1 and 2 to the ground, and they both are around 8.1. It says in the diagnostics that if they are under 10 to repair the power supply as necessary.

Do I need to focus on this? Could this be the reason that the 4x4 will not respond? Not enough voltage supply?

Thanks again.
grzy is offline   Reply With Quote
Old 11-07-2010, 12:55 PM   #5
ncranchero
Co-moderator
Denver,NC
 
ncranchero's Avatar
'94 F150 4x4 SWB 4.9L
 
Join Date: Aug 2004
Posts: 3,695

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 10 Post(s)
I'd say yes. Is your battery down that low? Check your fuses for good contact.

F1-13 (704) in the under hood box and F2-35 (931) under dash box feed those circuits.




__________________
'14 Transit Connect 2.5L 16 Valve DOHC Duratec
'02 Escape XLT 3.0L 24 Valve DOHC Duratec 160k
'94 F150 4x4 4.9L/5-speed 160K miles,
How to post photos
ncranchero is offline   Reply With Quote
Old 11-07-2010, 01:20 PM   #6
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Thanks for the quick response.

The battery is just over 12 volts.

I rechecked the fuses and they seem fine. However, after reseeding fuse 35, I measured the voltage at the module and it only read 1.2 volts. So I went back and reseeded the 35 fuse again and now it reads 8 volts.

Of course I have no 15 fuses to replace it with right now. So I am going to run to the store and get some. Maybe replacing this fuse will cure the issue.

Thanks.
grzy is offline   Reply With Quote
Old 11-07-2010, 01:54 PM   #7
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Well, no luck with replacing the 15A fuse. I am still getting a reading of 8.2 volts.

Is there any way that the control module is damaged so the correct voltage can not pass through it?

To verify, that I am reading it correctly, the grey junction is a, and the black is b, correct? In order to get the voltage, you leave the black connected and measure from pins 1 to ground and pin 2 to ground...correct?

Thanks and sorry for all the questions, I am new to fixing my own vehicles.

Rookie,
Mike
grzy is offline   Reply With Quote
Old 11-07-2010, 03:05 PM   #8
ncranchero
Co-moderator
Denver,NC
 
ncranchero's Avatar
'94 F150 4x4 SWB 4.9L
 
Join Date: Aug 2004
Posts: 3,695

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 10 Post(s)
The 2001 & 2002 wiring diagrams do not give the connector color but the 2003 does and the 281a is the black connector & the 281b is the gray connector. Wiring between the years is the same so we will assume for '01 & '02 that 281a is black & 281b is gray.

Test the black connector. Pin 1, circuit 931, is an Orange wire. Pin 2, the 704 circuit, is Dark Green/Light Green. You should disconnect the connectors from the module and test the voltage from the connector pins with the negative lead of the meter grounded to the body.




__________________
'14 Transit Connect 2.5L 16 Valve DOHC Duratec
'02 Escape XLT 3.0L 24 Valve DOHC Duratec 160k
'94 F150 4x4 4.9L/5-speed 160K miles,
How to post photos
ncranchero is offline   Reply With Quote
Old 11-07-2010, 06:52 PM   #9
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
OK...This is a stupid question, but how do I test the connectors pins? I can't get the red to touch it. Do I have to take off the red part on the connectors to expose the pins?
grzy is offline   Reply With Quote
Old 11-08-2010, 05:13 AM   #10
ncranchero
Co-moderator
Denver,NC
 
ncranchero's Avatar
'94 F150 4x4 SWB 4.9L
 
Join Date: Aug 2004
Posts: 3,695

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 10 Post(s)
I usually just insert a paper clip if the pin is inaccessible with the test lead probe.




__________________
'14 Transit Connect 2.5L 16 Valve DOHC Duratec
'02 Escape XLT 3.0L 24 Valve DOHC Duratec 160k
'94 F150 4x4 4.9L/5-speed 160K miles,
How to post photos
ncranchero is offline   Reply With Quote
Old 11-08-2010, 09:22 AM   #11
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Ah, thanks for the tip. I will try this when I get home from work today.
grzy is offline   Reply With Quote
Old 11-08-2010, 08:28 PM   #12
grzy
01 Sport Trac
 
Join Date: Nov 2010
Posts: 8

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Original Poster)
Well, after my lapse in measuring, there is enough voltage. It seems everything checks out with the connectors to the 4x4 control module. So all of test B passed.

Now onto test C, but I can not get any codes. So the other things I can check out would be the switch. Where is the MSS located? Is it near the control module? I do see another black and grey harness.

Any tips would be great.

Mike
grzy is offline   Reply With Quote
Old 01-26-2011, 07:07 PM   #13
yipus
Fairfax County, Virginia
2009 Ford Explorer
 
Join Date: Jan 2011
Posts: 1

Vehicle Specs

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
New to Explorer, renting one for the first time; no manual. Pushing 4x4 buttons in neutral; can't get it to turn on. How do I turn 4x4 on?
yipus is offline   Reply With Quote
Reply



Suggest this thread to friends:


Tags
4 wheel drive, 4x4, 4x4 problem, 4x4 sport trac


Join the "Elite Explorers" Today!



Search Explorer Forum


Top of Page

Thread Tools

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

Forum Jump


All times are GMT -5. The time now is 11:31 AM.



US Flag
We Support Our Troops!

Explore the site!


Copyright 2014 - 1996 Rick Horwitz Photography



Ford Motor Company is not involved in the management of this site in any way.



All tips on this site are for use at your own risk and discretion.

Modifying the suspension on any vehicle will cause changes to its handling characteristics.



Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.