Description:

This diagnostic trouble code (DTC) UIC 523967.02 is generated if there is a mismatch between the signals of the switch for speed band 2 and the potentiometer of the speed control lever (B67). The signal of the activated switch for speed band 2 is being received, even though the speed control lever is in speed band 1.

Reaction:

When this error occurs, the control unit may limit or alter the functionality of the speed control lever to ensure safe operation and prevent potential damage.

Recommendations:

• Inspect Speed Control Lever:
  • Check the speed control lever (B67) and ensure it is properly calibrated and positioned.
• Inspect Switch for Speed Band 2:
  • Verify the functionality of the switch for speed band 2. Ensure that it is not sending incorrect signals.
• Check Wiring and Connections:
  • Ensure all wiring and connectors related to the speed control lever and speed band switches are secure and free from damage or corrosion.
• Replace Faulty Components:
  • If the speed control lever or the speed band 2 switch is 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 calibration and maintenance of the speed control lever and associated switches can help prevent such issues.