John Deere 521475.02 – AIC (Armrest Interface Control Unit): Armrest Rear Hitch Setup Controls Module Circuit Fault

Indicates a LIN data fault originating from the rear hitch setup controls module. There is a data transfer problem between the AIC control software and the LIN Bus module located at 'position M', causing the system to default to a 'Limited Function' state.

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

1. 1

   Inspect the Armrest Rear Hitch Setup Controls Module (Position M / Component A065) for any signs of damage, corrosion, or operational issues.

2. 2

   Check the wiring harness and connections related to the LIN Bus module to ensure they are secure and intact. Look for damaged, pinched, or loose wiring.

3. 3

   Perform detailed diagnostic testing using John Deere diagnostic tools to analyze the LIN Bus module's ability to send and receive data accurately.

1. 1

   Repair Wiring

   If the diagnostic checks reveal damaged insulation, exposed wiring, or faulty electrical connections on the LIN Bus circuit leading to the A065 module, repair or replace the affected wiring harness sections.

2. 2

   Replace the Module

   If the wiring is intact but the LIN Bus module is found to be internally faulty and unable to communicate, replace the Armrest Rear Hitch Setup Controls Module (Position M).

3. 3

   System Reset and Testing

   After any necessary repairs or module replacements, clear the fault codes, reset the system, and perform operational tests to ensure that the armrest rear hitch setup controls are fully operational and that all communication errors have been resolved.