Check 4x4 light

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Jul 5, 2023 | 06:58 PM

Booch88

Thread Starter

4wd Low

Joined: May 2023

Posts: 11

Likes: 4

Check 4x4 light

Does anyone know how to retrieve codes when getting the check 4x4 ? or how to reset it ? 2021 F250 7.3

Jul 6, 2023 | 06:23 AM

ToMang07

Logistics Pro

Joined: May 2011

Posts: 4,832

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From: Maine

Most of us use Forscan or similar scan tool. If you don't own one, buy one. Otherwise it's off to the dealer.... and hopefully still under warranty.

Jul 6, 2023 | 08:26 AM

DSLTRK60

Fleet Mechanic

Joined: Apr 2015

Posts: 1,641

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From: Phelan CA

Is the 4x4 system engaging, or is it a nuisance code?

Jul 6, 2023 | 11:43 AM

Booch88

Thread Starter

4wd Low

Joined: May 2023

Posts: 11

Likes: 4

This was self-induced, pretty mad at myself while running a wire I accidentally cut the small BU/GN and small YE-RD, and nicked the GN-OG. The code Im getting is

U0102:00-0A Lost communication with TCCM

aka the display, issue checks 4x4. Based on the wire schematics the BU/GN is a communications network wire Not sure about the YE-RD. I fixed the cut wires but that didn't help so I think the Nick in the GN-OG is the issue because that is the Module communication network (per the wire diagram). Researching more before I do anything to that wire

On forscan the log says it can communicate with TCCM but the error is cant read the DTC, Maybe I fried the module

Jul 7, 2023 | 09:25 AM

Booch88

Thread Starter

4wd Low

Joined: May 2023

Posts: 11

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So I fixed it, went through everything again found fuse 32 (F11) to be bad, my old eyes thought it was good the first go around, a Weird type fuse had to go to Ford to get one.