AIC 521577.09 – Missing Communication in Armrest Rear Right Module. John Deere System Advisory.

AIC 521577.09 (AIC )

Code: 521577.09



This error code signals a failure in communication where the Armrest Interface Control software (AIC) is not receiving LIN messages from the armrest rear right module. The data transfer issue originates from LIN Bus position P, indicating potential complications either within the LIN Bus system or stemming from faults in the transmitting LIN Bus module.


In response to the missing data, the control unit has limited certain functionalities related to the rear right module to prevent operational inaccuracies and ensure system stability.


  • Inspect LIN Bus Module at Position P: Check for any signs of damage or malfunction in the module that could impede communication.
  • Perform Diagnostic Checks: Utilize diagnostic equipment to assess the performance and integrity of the LIN Bus module at position P, focusing on its ability to send and receive messages.
  • Rectify Wiring and Connection Issues: Make sure that all connections related to position P are secure and functioning correctly. Address any wiring issues that could disrupt communication.
  • Module Replacement if Necessary: If the LIN Bus module is found to be faulty, replacing it may be required to restore proper functionality to the communication system.
  • System Reset and Testing: After resolving the issue, reset the system and conduct thorough tests to ensure that the armrest rear right module is fully operational and communicating effectively without any disruptions.


Regular maintenance and proactive management of communication systems like the LIN Bus are crucial for the reliable operation of sophisticated agricultural machinery. Ensuring that all modules and connections are functioning correctly helps avoid potential system failures and enhances the overall efficiency and safety of the machinery.