John Deere 521411.02 – AIC: Armrest Multi-Function Lever Module Circuit Fault (Multi-Function Lever button 3 circuit fault)

This code indicates an error when reading the signal of the rear left switch (button 3) on the Armrest Multi-Function Lever. The signal transmission from this switch is disrupted, out of range, or cannot be correctly read, suggesting a breakdown in electrical integrity or the switch's operational capacity. In response, the control unit automatically disables the function associated with button 3.

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

1. 1

   Inspect the rear left switch (button 3) on the multi-function lever for physical degradation, sticking, or electrical damage.

2. 2

   Perform continuity and signal quality tests on the circuitry associated with button 3 to identify disruptions in the signal pathway to the AIC module.

3. 3

   Inspect the multi-function lever harness for loose connections, pinched wires, or shorts.

1. 1

   Rectify Wiring Issues

   Secure, repair, or replace any faulty wiring or loose electrical connections found during the diagnostic phase.

2. 2

   Component Replacement

   If the wiring is intact but the switch fails testing, the defective rear left switch (or the entire Armrest Multi-Function Lever Module, depending on assembly serviceability) must be replaced.

3. 3

   System Testing and Calibration

   After completing the repairs or replacing the module, reset the control system.

4. 4

   Operational Verification

   Run comprehensive operational tests to ensure that the multi-function lever is fully functional, the rear left button responds correctly, and the 521411.02 error code does not recur.