John Deere 521571.09 – AIC (Armrest Interface Control Unit): Armrest Front Left Module Message Missing

The Armrest Interface Control software (AIC) is not receiving LIN messages from the armrest front left module due to a data transfer problem with the LIN Bus module at Position D, causing the control unit to shift to a limited function mode.

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

1. 1

   Inspect the LIN Bus Module at Position D (Armrest Front Left Module) for any visible signs of damage, wear, or operational issues that could hinder message transmission.

2. 2

   Ensure that all connections related to the LIN Bus module are secure and intact. Look for loose pins, corrosion, or damaged wiring that could be disrupting the LIN Bus communication.

3. 3

   Utilize John Deere diagnostic tools (Service ADVISOR) to analyze the LIN Bus module's ability to send and receive data accurately.

1. 1

   Access the Module

   Disassemble the necessary CommandARM™ panels to access the Armrest Front Left Module (Position D).

2. 2

   Repair Wiring

   If the diagnostic checks revealed damaged or loose wiring/connectors, repair or replace the affected harness sections.

3. 3

   Replace the Module

   If the wiring is intact but the LIN Bus module is found to be faulty (unable to transmit data), replace the Armrest Front Left Module.

4. 4

   System Reset and Testing

   After any necessary repairs or replacements, reset the system and perform comprehensive tests to ensure that the armrest front left module is fully operational and that all communication errors have been resolved.