JLG 20MVL:
No control in reverse

Drives forward with no issues. In reverse the left motor spins at full speed with no control. Cannot go back to forward without power cycling. Right motor works correctly in both forward and reverse. Traction control module?
  • Posted 21 Apr 2024 05:38
  • Discussion started by Beek
  • Michigan, United States
Showing items 1 - 4 of 4 results.
I replaced the traction control module. Fixed :)
  • Posted 7 Jun 2024 09:26
  • Reply by Beek
  • Michigan, United States
Probably, but usually would show an error
  • Posted 4 Jun 2024 05:23
  • Reply by Matthew_Reed
  • New York, United States
1. I have the manual.
2. Brakes release and engage properly
3. forward motion from joystick works properly
4. reverse motion for right drive motor work properly
5. reverse motion for left motor works, but it is at full speed so I automatically turn left in reverse.
6. Once I go in reverse, the left wheel seems stuck in reverse. It will stop when I disengage the joystick but if I try to go forward again the left tire still spins full speed in reverse. Once I power cycle I can again move forward with no issues.
  • Posted 23 Apr 2024 02:46
  • Reply by Beek
  • Michigan, United States
https://acrobat.adobe.com/id/urn:aaid:sc:VA6C2:e5aca48c-e085-41b9-b1c7-f293344a9799
Download service manual, I would verify joystick output to reverse first and verify brakes releasing
  • Posted 22 Apr 2024 04:30
  • Reply by Matthew_Reed
  • New York, United States

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