Solved: ABS, Traction, Pre-collision warnings, 4WD inoperable

I was messing around with the 2WD Lo mod wiring at my switch, and lost track of what went to where. These warnings popped up and have stayed on even after pulling the 2WD lo harness and going back to stock.

So, my question is what to check first. My thought was to check fuses, replace if needed, then try for a scanner that can address ABS, then the dealer as a last resort.

My question is which fuses to check (I can see the 50A ABS fuse under the hood), and if there is a way to tell if these hi amp fuses are blown visually. I'm going to get the multimeter out anyway.

Hopefully I didn't do any serious damage.

Up: Both 50A and 30A ABS fuses test good.


Up 2: Bought a code scanner, and it showed U0114 - interruption with 4wd clutch sensor. Code would immediately return upon clearing, so I guessed it was the 4wd fuse and it was. 10a under the dash.

 

Have been going through a wiring project adding a DCDC and second slimline 170 AH AGM behind rear seat. 2023 TRD OR 6 Speed DC. Recently added both Anytime Locker and 2wd Low Range. Both harness kits. Hit a speed bump, one wheel only (other wheel was on smooth shoulder) at 40 MPH, same syndrome you had. Wondering if the harness came loose or somehow tripped the 10 AMP fuse that was the source of your issue. Going to check.....