AIC 524096.03 – High Voltage in Armrest Engine Speed Control Module. John Deere System Notification.

AIC 524096.03 (AIC )

Code: 524096.03



This error code AIC 524096.03 identifies an issue with excessive voltage at the signal input of channel 1 of the potentiometer used in the armrest engine speed control module. The voltage reading above 4.5 volts suggests there might be a problem with the signal lead or the ground connection of the potentiometer, which could affect the accuracy and reliability of the engine speed settings.


In response to the high voltage detection, the control unit has imposed a limited functionality mode on the engine speed control system to prevent potential errors in engine management and safeguard the system against damage caused by incorrect voltage levels.


  • Inspect the Potentiometer and Electrical Connections: Check the potentiometer in channel 1 for any signs of damage or faults. Examine the wiring, especially the signal leads and ground connections, for loose, corroded, or damaged wires that might be causing high voltage readings.
  • Measure and Diagnose Voltage Levels: Use electrical testing equipment to verify the voltage levels at the potentiometer’s input. Identify any deviations from normal operating ranges that could signal underlying electrical issues.
  • Rectify Wiring or Connection Issues: Repair or replace any faulty wiring or connectors to ensure stable and correct voltage levels. Ensure that the ground connections are properly secured and free of corrosion.
  • Calibrate the Potentiometer: If the potentiometer and wiring are intact, recalibrate the potentiometer to ensure it accurately reflects the engine speed lever positions.
  • System Reset and Function Testing: After addressing the issue, reset the engine speed control module to clear any error states. Perform thorough testing to ensure that the module functions correctly under all operating conditions and responds accurately to user inputs.
  • Comprehensive System Check: Conduct a comprehensive check of the entire engine control system to ensure no additional faults are present and that all components are functioning in harmony.


Maintaining proper voltage levels within electronic modules is crucial for the stable and efficient operation of machinery. Regular inspections and proactive maintenance of electrical systems can prevent issues related to high voltage, thereby enhancing the reliability and safety of the equipment. Addressing electrical discrepancies promptly ensures optimal performance and minimizes the risk of operational failures.