I've been having trouble with 4x4 not activating, no light, etc. Had P1865 and P1876. Through testing, determined P1876 was caused by bad ESOF Solenoid (for others, it should have battery voltage on the red wire with the key on and the Solenoid should measuer between 45-55 Ohms between the middle pin and either of the side pins). I replaced it and cleared the P1876 but still have the P1865. I've done the below and it works but now I need to do this -

2. P1865 can be set if the 4WD module does not see the correct feedback from the encoder plates. This can be caused by a defective shift motor or wiring harness issues. Using scan tool data, monitor the encoder plates a, b, c, and d. When the shift motor is disconnected, all of the encoder plates should read the same. Most scan tools will show the plates as "closed" when the shift motor is unplugged. If OK, ground each encoder

and I don't know how to monitor these in AE. Can anyone help with that?

Completed these steps successfully -
<TABLE style="WIDTH: 100%; mso-cellspacing: 0in; mso-yfti-tbllook: 1184; mso-padding-alt: 0in 0in 0in 0in" class=MsoNormalTable border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes"><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; PADDING-BOTTOM: 0in; BACKGROUND-COLOR: transparent; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0; PADDING-TOP: 0in" vAlign=top>Customer Concern:<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>
</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; PADDING-BOTTOM: 0in; BACKGROUND-COLOR: transparent; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0; PADDING-TOP: 0in">The Four Wheel Drive (4WD) does not work. The 4x4 lights do not light up. <o></o>
</TD></TR><TR style="mso-yfti-irow: 1; mso-yfti-lastrow: yes"><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; PADDING-BOTTOM: 0in; BACKGROUND-COLOR: transparent; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0; PADDING-TOP: 0in" vAlign=top>Tests/Procedures:<o></o>
</TD><TD style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; PADDING-BOTTOM: 0in; BACKGROUND-COLOR: transparent; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0; PADDING-TOP: 0in">1. Retrieve codes from the 4WD control module. If the scan tool cannot communicate with the control module, check fuses F2-33, F2-45 and F2-31 that feed power to the control module.

2. If all the fuses are good, recheck power and grounds directly at the 4WD control module.

3. If the power and grounds all check out OK, try a different scan tool. There have been software conflicts with various scan tools that don't allow them to communicate with the 4WD control module.

4. Check for voltage on the Dark Blue (DB) wire at pin 3, C281b that goes to the 4WD control switch; typical voltages are about 6 volts in 2WD, 2.8 volts in 4WD high, 1.0 volt in 4WD low.

5. If there is no voltage at the control switch, and there are the proper power and grounds at the control module, the module may be defective.

6. If the voltage is present at the DB wire, check to see if the shift relays have fallen down from the auxiliary relay box #3. These relays are just to the left of the Master Cylinder and have been known to fall out and dangle upside down by the wires, causing water to enter the relay and render them inoperative.

7. If the relays appear intact, check for power at the relays on the DG/LG (Dark Green/Light Green) from fuse F2-59 in the Central Junction Box (CJB).

8. If the power is good to the relays, test relay operation. Unplug the 4WD module and apply ground to the Brown/White (BN/WH) wire from pin 10, C281b. The low to high relay should energize and the shift motor should shift. Then try grounding the high to low relay on the Orange/Light Blue (OG/LB) wire to see if the relay energizes and the shift motor should rotate in the opposite direction.

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set your heat to floor..turn the blower on high...start truck..turn ESOF to 4x4...does the heat switch to defrost???

 

No, there aren't any vacuum leaks. Everything I'm seeing on this code points to either a bad wire to the gearmotor encoder assembly or a bad gearmotor encoder assembly but to determine which one, I need to be able to check the values of the PIDs for the plates and I can't figure out how to do that with AE.

 

been so long since i used my AE i cant remember where..but you need to switch screen before you log the truck on....wish i could help you better then that..you can try to ask here.AutoEnginuity® Diagnostic Software - Power Hungry Performance Forum

good folks over there...

 

Sorry no help with AE but I noticed the test procedure is identifying fuses by wiring diagram designation (2002-2003) and not what you would find in an owner's manual. If you don't have this it may help. It's a PDF.

https://www.ford-trucks.com/forums/a...3&d=1228670664

 

where is this 4wd contol module located

 

Behind the glove box.

 

Just thought I'd bump this back up to the top since I'm I'll be back home today and need to figure out what went wrong. If anyone knows how to use AE to read the PIDs from the encoder plates, I'd really appreciate the help!

Happy New Year, everyone!

 

The following information is from my DashDaq detected pids, but the information should translate identically (or close to) AE.

575 "SSA_FIS" "Shift Solenoid A (SS-A) inductive signature malfunction det" "" 1
579 "SSB_FIS" "Shift Solenoid B (SS-B) inductive signature malfunction det" "" 1
583 "SSC_FIS" "Shift Solenoid C (SS-C) inductive signature malfunction det" "" 1
585 "SSD_FIS" "Shift Solenoid D (SS-D) inductive signature malfunction det" "" 1

I hope this helps

 

I figured this out, it was really pretty simple. When connecting to the truck, you just need to change Enhanced Powertrain to whatever system you want to look at, in this case it was in the GEM. Once I did that, the encoder plates showed up in the live data view.