AIC 523745.04 – Low Voltage Fault in iTEC™ Program Selection Switch. John Deere System Alert.

AIC 523745.04 (AIC )

Code: 523745.04



This error code, AIC 523745.04, indicates that the voltage at the iTEC™ program selection switch is abnormally low, suggesting a potential issue such as a faulty switch, a short to ground, or a problem within the electrical circuitry associated with the switch. Low voltage can affect the switch’s ability to function properly and reliably communicate with the control software.


In response to the detected low voltage, the control software has limited or completely disabled the functionality of the iTEC™ program selection switch. This action prevents potential errors or unsafe operations that could arise from incorrect switch performance.


  • Inspect the iTEC™ Program Selection Switch: Examine the switch for any physical or visible electrical damage, signs of corrosion, or wear that could impact its functionality.
  • Diagnose Electrical Circuitry: Utilize electrical diagnostic tools to trace and assess the circuit related to the switch. Look for any signs of shorts to ground or other electrical issues that could be causing the voltage drop.
  • Repair or Replace Faulty Components: Repair or replace any faulty wiring, connectors, or components found during the diagnostic process. Ensure all parts of the circuit are in good condition and correctly configured.
  • Test Switch Operation: Once repairs are made, test the switch to ensure it now operates within the correct voltage range and performs its functions as expected.
  • System Reset and Comprehensive Testing: Reset the control system to clear any fault states. Perform a full system check to ensure that all functions related to the iTEC™ program selection switch are operational and the issue of low voltage has been resolved.


Maintaining the electrical integrity of control systems is crucial for the reliable operation of agricultural equipment. Regular checks and timely intervention when issues are detected can prevent larger system failures and ensure that equipment operates safely and efficiently. Addressing voltage irregularities promptly helps maintain the performance and longevity of the machinery.