Description:

This diagnostic trouble code (DTC) UIC 523953.04 is generated when the control unit measures a voltage of less than 0.5 volts at the signal input from channel 1 of the potentiometer (B67, lead 6037). This indicates a problem at the signal lead or a problem with the potentiometer supply voltage.

Reaction:

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

Recommendations:

• Inspect Signal Lead and Connections:
  • Check the wiring connections at the speed control lever potentiometer for any loose, corroded, or damaged connectors.
  • Measure the voltage at lead 6037 to confirm it is below 0.5 volts.
• Verify Potentiometer Supply Voltage:
  • Ensure that the supply voltage to the potentiometer is within the specified range and is not causing the low voltage reading.
• Replace Potentiometer:
  • If the wiring and connections are intact and the voltage remains too low, consider replacing the potentiometer (B67).
• Consult Technical Support:
  • If the issue persists, contact John Deere technical support for further assistance and potential software updates.

Note:

Low voltage readings could also be due to intermittent faults in the wiring or connectors. Ensure a thorough inspection to avoid repeat occurrences.