Description:

This diagnostic trouble code (DTC) UIC 001504.30 is triggered if the control unit receives a signal from the operator presence switch (S40, lead 6087) without interruption for 20 hours. This indicates a short in the signal lead.

Reaction:

When this error occurs, the control unit may limit or disable certain vehicle functions to ensure safety, as the continuous signal indicates a potential fault in the operator presence detection system.

Recommendations:

• Inspect Signal Lead:
  • Check the signal lead 6087 for any signs of damage, corrosion, or short circuits.
  • Ensure all connectors are securely attached and free from debris.
• Check Operator Presence Switch:
  • Inspect the operator presence switch (S40) for proper operation and ensure it is not stuck or malfunctioning.
• Test Signal Continuity:
  • Use diagnostic tools to test the continuity of the signal lead and identify any shorts or interruptions.
  • Repair or replace the signal lead if any faults are detected.
• Replace Operator Presence Switch:
  • If the switch itself is found to be faulty, replace it with a new unit.
• Consult Technical Support:
  • If the issue persists, contact John Deere technical support for further diagnostics and potential solutions.

Note:

Regular maintenance and testing of the operator presence detection system can help prevent such faults and ensure safe operation.