Description:

This diagnostic trouble code (DTC) UIC 524021.31 is generated when the control unit receives an incorrect combination of signals from the reverse drive lever, including signals from the neutral, park lock, direction, power zero, or tractor movement switches.

Reaction:

When this error occurs, the control unit may prevent the tractor from moving or may limit its functionality to ensure safe operation and prevent potential damage.

Recommendations:

• Inspect Reverse Drive Lever:
  • Check the reverse drive lever (S80) for proper operation and ensure it is not stuck or damaged.
• Verify Switch Signals:
  • Confirm that the signals from the neutral, park lock, direction, power zero, and tractor movement switches are correct and consistent.
• Check Wiring and Connections:
  • Ensure all wiring and connectors related to the reverse drive lever and its switches are secure and free from damage or corrosion.
• Replace Faulty Components:
  • If any of the switches are found to be faulty, replace them as necessary.
• Consult Technical Support:
  • If the issue persists, contact John Deere technical support for further diagnostics and potential solutions.

Note:

Regular inspection and maintenance of the reverse drive lever and its associated switches can help prevent such faults and ensure reliable operation.