AIC 524212.02 – Rear Hitch Control Lever Switch/Sensor Conflict. John Deere System Alert.

AIC 524212.02 (AIC )

Code: 524212.02



This error code, AIC 524212.02, points to a conflict within the rear hitch control system, specifically between the lever switch and the sensor voltage from the depth-setting potentiometer. The discrepancy suggests that the physical position of the rear hitch control lever does not align with the electrical feedback provided by the sensor, which could lead to inaccuracies in hitch positioning and operation.


Despite the issue being associated with the rear hitch control system, the response has been to disable SCV II (Selective Control Valve II). This could indicate a precautionary measure to prevent potential interference or additional system malfunctions, possibly due to interconnected system controls or an error in the system’s programmed response.


  • Inspect the Rear Hitch Control Lever and Associated Components: Check the control lever and its switch for any signs of physical wear, damage, or improper alignment that could affect operation. Ensure smooth movement and correct positioning at all settings.
  • Diagnose Sensor and Electrical Issues: Utilize diagnostic tools to test the depth-setting potentiometer and its wiring. Measure voltage outputs and check for consistency with lever positions to identify any discrepancies.
  • Repair or Replace Faulty Parts: If any components of the lever, switch, or sensor are found to be defective, replace or repair them to ensure accurate and reliable operation. Ensure all electrical connections are secure and free from corrosion.
  • Calibrate the Hitch Control System: After any necessary repairs, recalibrate the hitch control system to ensure that the mechanical positions of the lever accurately match the sensor outputs.
  • Review System Configuration: Verify that the response to disable SCV II is appropriate and adjust system settings if necessary to ensure proper and targeted responses to specific faults.
  • System Reset and Operational Testing: Reset the control system to clear any faults. Perform a comprehensive test to confirm that the rear hitch control is functioning correctly and the previously reported conflict has been resolved.


Regular checks and maintenance are essential to ensure that control levers and their sensors are in good working order, especially in complex systems like those used for hitch control. Proper synchronization between mechanical components and sensors is crucial for accurate operation, preventing mechanical failures, and ensuring the safety and efficiency of machinery operations. Addressing any detected issues promptly helps maintain operational reliability and extends the service life of the equipment.