John Deere 521573.09 – AIC (Armrest Interface Control Unit): Armrest Front Right Module Message Missing / Communication Fault in Armrest Front Right Module

The Armrest Interface Control (AIC) software is not receiving LIN (Local Interconnect Network) messages from the armrest front right module due to a data transfer problem at the LIN Bus position F, pointing to a malfunction within the LIN Bus system, a wiring issue, or a failure of the transmitting LIN Bus module itself.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8225R
• 8245R
• 8270R
• 8295R
• 8320R
• 8335R
• 8345R
• 8370R
• 8400R
• 9470RT
• 9520RT
• 9570RT

1. 1

   Inspect the front right LIN Bus module on the armrest (Position F) for physical damage, electronic failure, or configuration errors.

2. 2

   Check all wiring harnesses and connectors between the AIC and the front right module for loose pins, corrosion, or chafed wires.

3. 3

   Use a John Deere Service ADVISOR diagnostic tool to test the module's ability to send and receive messages on the LIN Bus network.

1. 1

   Address Wiring Issues

   If the diagnostic checks reveal faulty, corroded, or loose wiring/connections, repair or replace the affected harness sections to restore communication between the AIC and the front right module.

2. 2

   Replace Defective Module

   If the wiring is intact but the LIN Bus module at position F fails the diagnostic communication test, the module itself is defective and must be replaced.

3. 3

   System Reset and Testing

   After repairing the wiring or replacing the module, clear the fault codes and reset the system. Perform a comprehensive series of operational tests on the armrest controls to ensure that the communication issue is resolved.