BRC 523652.02 – Wire Connector Fault / Incompatible Harness Location. John Deere System Advisory.

BRC 523652.02 (BRC )

Code: 523652.02



Error code BRC 523652.02 indicates that the control unit is connected to the wrong harness, which may occur due to a wiring error or incorrect installation. This incorrect connection can prevent the control unit from communicating effectively with other vehicle systems or receiving necessary power and signals, leading to a complete malfunction.


As a result of this connectivity issue, the control unit’s functionality has been disabled (turned OFF) to prevent incorrect operation or potential damage to the system or the vehicle.


  • Inspect and Identify Correct Harness: Thoroughly check the wiring and harness connections to ensure that the control unit is connected to the correct harness as specified by the manufacturer’s guidelines.
  • Correct Wiring Errors: If a mismatch or incorrect connection is found, rewire the connections according to the correct configuration. Ensure all connections are secure and properly aligned.
  • Test Connectivity and Functionality: After correcting the wiring, test the control unit and associated systems for functionality to ensure that all systems are communicating correctly and operating as intended.
  • Review Installation Procedures: Revisit installation procedures to prevent similar issues in the future. This includes double-checking harness labels and connection points during installation or maintenance.
  • Continuous Monitoring: Implement regular checks of wiring and harness connections as part of routine maintenance to ensure ongoing compatibility and correct operation.


Correct and compatible wiring is crucial for the reliable operation of vehicle control units. Ensuring that all components are correctly connected according to manufacturer specifications is essential for maintaining system integrity and functionality. Regular inspections and adherence to detailed installation procedures can help prevent issues related to incorrect wiring and harness connections.