Description:

This diagnostic trouble code (DTC) UIC 523961.07 is generated under the following conditions:

• If the park lock does not engage, even though the UIC commands park position and the tractor’s travel speed is such that engagement is permitted.
• If a travel speed signal is present, even though the park position is commanded and the UIC has received confirmation that the park lock is engaged.

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 Park Lock Mechanism:
  • Check the park lock mechanism to ensure it engages and disengages correctly without any physical obstruction or damage.
• Inspect Reverse Drive Lever:
  • Verify that the reverse drive lever is in the correct position and that the park position sensor is functioning properly.
• Check Travel Speed Sensor:
  • Ensure the travel speed sensor is providing accurate readings and is not malfunctioning.
• Inspect Wiring and Connections:
  • Ensure all wiring and connectors related to the park lock and travel speed systems are secure and free from damage or corrosion.
• Perform System Diagnostics:
  • Use diagnostic tools to read and clear any related error codes and perform system tests to ensure proper functionality.
• Consult Technical Support:
  • If the issue persists, contact John Deere technical support for further diagnostics and potential solutions.

Note:

Regular maintenance and inspection of the park lock system can help prevent such faults and ensure reliable operation.