AIC 524096.04 – Low Voltage in Armrest Engine Speed Control Module. John Deere System Alert.

AIC 524096.04 (AIC )

Code: 524096.04



This error code AIC 524096.04 signals a low voltage issue in the armrest engine speed control module, specifically at the signal input from channel 1 of the potentiometer. The voltage measurement below 0.5 volts indicates potential issues with the signal lead or with the potentiometer’s supply voltage. Such low voltage readings can impair the functionality of the engine speed control, affecting its ability to accurately regulate engine settings.


Due to this voltage anomaly, the control unit has restricted the functionality of the engine speed control system to a limited mode. This measure is taken to prevent incorrect operation and potential damage to the engine control system resulting from inadequate voltage inputs.


  • Inspect the Potentiometer and Signal Leads: Examine the potentiometer and its connections, particularly focusing on channel 1. Look for any signs of damage, wear, or improper connections that might be causing the low voltage issue.
  • Check the Potentiometer’s Power Supply: Ensure that the potentiometer’s power supply is stable and delivering the correct voltage. Any discrepancies in the power supply could lead to the low voltage readings observed.
  • Test Electrical Connections: Utilize a multimeter or similar diagnostic tool to measure the voltage levels at various points along the circuit to identify where the voltage drop occurs.
  • Repair or Replace Faulty Components: Repair or replace any faulty wiring, connections, or components that are found to be contributing to the low voltage. Ensure all repairs are done to a high standard to prevent future issues.
  • Calibrate the Engine Speed Control Module: After resolving the electrical issues, recalibrate the engine speed control module to ensure it accurately interprets the potentiometer’s signals.
  • System Reset and Functional Testing: Reset the control system to clear any errors and perform a thorough test of the engine speed control module under various operational conditions to ensure it functions correctly and reliably.


Regular maintenance of electrical components and systems in machinery is vital for ensuring optimal performance and preventing issues that could lead to operational inefficiencies or safety hazards. Proactive management of such systems, including regular checks and timely repairs, is crucial to maintaining the reliability and safety of the machinery. Addressing voltage issues promptly helps ensure continuous and effective operation.