ATC 522343.09 – R17 Resistor at Heated Rear Window, Incorrect CAN BUS Message. John Deere System Advisory.

Code: 522343.09



The error code, ATC 522343.09, is generated when there is a communication problem between the power module (HF) PC6 and the Automatic Temperature Control (ATC) unit. The issue involves intermittent or nonexistent reception of one or more CAN messages sent by the ATC to the power module (HF) PC6. This communication error could be caused by a loose wire or other connectivity issues within the CAN BUS network, affecting the control and operation of the heated rear window.


Due to these communication errors, the heated rear window may not function correctly or may operate inconsistently, which can impact visibility and safety during adverse weather conditions.


  • Inspect CAN BUS Connections: Check all CAN BUS connections between the ATC unit and the power module (HF) PC6, particularly looking for loose connections, corrosion, or damage.
  • Test CAN BUS Integrity: Use diagnostic tools to analyze the integrity and functionality of the CAN BUS, looking for errors or poor connections that could disrupt communication.
  • Secure Loose Wiring: Ensure all wiring is properly secured and making good contact. Tighten any loose connections and replace damaged wires or connectors.
  • Reprogram or Reset Modules: Consider reprogramming or resetting the affected modules to ensure that all settings are correct and that the modules can properly communicate.
  • Monitor System Performance: After repairs, closely monitor the system to ensure that the CAN BUS messages are being transmitted and received without interruption and that the heated rear window operates reliably.


Maintaining robust and reliable communication across control systems is crucial for the safe and efficient operation of machinery. Regular monitoring and maintenance of the CAN BUS and associated electronics are essential to prevent communication failures and ensure that the equipment operates smoothly. Addressing communication issues promptly is key to minimizing downtime and maintaining operational efficiency.