Description:

This diagnostic trouble code (DTC) UIC 524027.31 is generated when the control unit receives a signal from one direction switch (forward travel or reverse travel) together with the signal of the corner park switch and the power zero switch simultaneously.

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) to ensure it is functioning correctly and is not stuck or damaged.
• Verify Switch Signals:
  • Confirm that the forward, reverse, park lock, and power zero switches are not being activated simultaneously and that their signals are accurate.
• 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 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.