JLG 20MVL:
Code 343

Truck will only code out upon lowering to a certain point (around 40 inches). If you do not raise the lift higher than that point it will never code. You lift up over that point, come down to it and all the led's on the operators control box flash, sets code 343 traction control module, cuts traction and only allows to lower. If you re-key lift, it works fine until you do the previous scenario.

Swapped with known good ground control unit, traction control unit and pinned connector from GCU to TCU (P4 if I remember), and control box, problem still persists. Programming mode x and y axis tilt reads normal. Ohm check on mast cables, all relevant wires are consistent BUT one is.3 ohms higher.

Wondering if anyone has any insight on what to check or what could be the problem.
  • Posted 16 Mar 2018 05:36
  • Modified 16 Mar 2018 05:37 by poster
  • Discussion started by kyle
  • Ohio, United States

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