AIC 523805.03 – High Voltage Fault in Multi-Function Lever Fore-Aft Axis. John Deere System Alert.

AIC 523805.03 (AIC )

Code: 523805.03



The error code AIC 523805.03 identifies an electrical issue with the multi-function lever, specifically along the fore-aft axis, where the voltage is excessively high. This condition could be indicative of a short circuit or another electrical fault in the wiring or components associated with this control axis. High voltage can potentially damage the electronic systems or disrupt the normal operation of the lever.


In response to this high voltage condition, the control software has either limited or completely disabled the functionality of the multi-function lever in the fore-aft axis. This safety measure is intended to prevent potential damage to the machinery and ensure operator safety by avoiding unintended movements.


  • Inspect Wiring and Components: Check the wiring and electronic components along the fore-aft axis of the multi-function lever for signs of damage, wear, or improper installation that could lead to a short circuit.
  • Measure and Diagnose Voltage Levels: Use diagnostic tools to measure the voltage levels within the circuit. Look for spikes or sustained high levels that could indicate the presence of a short.
  • Replace or Repair Damaged Parts: If any damaged wires or faulty components are identified, replace or repair them as needed to resolve the issue and restore normal voltage levels.
  • Test Lever Operation: After repairs are completed, thoroughly test the multi-function lever to ensure it operates smoothly and within the correct voltage parameters.
  • System Reset and Functional Verification: Reset the control system to clear any error states and perform a comprehensive functional test to verify that all aspects of the multi-function lever, especially the fore-aft axis, are fully operational and free from voltage irregularities.


Regular checks and timely maintenance of the electrical systems within agricultural machinery are crucial for reliable operation. Ensuring that all components function within their specified voltage ranges is essential to prevent malfunctions and maintain the safety and efficiency of the equipment.