BIF 522427.09 – Communication Error in Windshield Wiper Relay Control. John Deere System Advisory.

BIF 522427.09 (BIF )

Code: 522427.09



Error code BIF 522427.09 is reported when there is a disruption in the data communication between the Power Module PC0 and the BIF control unit, specifically affecting the K06/04 or K02/04 relay for the windshield wiper. This fault occurs due to intermittent or nonexistent reception of one or more CAN messages from the BIF to the power module, which may be caused by loose wiring or other connectivity issues.


The malfunction in communication may lead to improper functioning of the windshield wiper system, including erratic behavior or failure to operate when activated.


  • Inspect and Secure Wiring Connections: Check all wiring connections between the BIF control unit and Power Module PC0, ensuring they are tight and free from corrosion or damage. Repair or replace any faulty wiring.
  • Test CAN BUS Network: Utilize diagnostic tools to examine the integrity and functionality of the CAN BUS network, specifically the segments connecting the BIF to Power Module PC0. Look for disruptions or errors that could be affecting communication.
  • Update Firmware and Software: Verify that the firmware of the power module and the software of the BIF are up to date. Software updates can often resolve compatibility issues that might be causing communication errors.
  • Evaluate Power Module and BIF Functionality: Test both the Power Module PC0 and the BIF control unit to ensure they are functioning correctly and capable of sending and receiving accurate CAN messages.
  • Comprehensive Diagnostic Evaluation: Perform a full diagnostic check to identify and rectify any less apparent issues within the communication system that might be causing the data transfer problems.


Ensuring robust and reliable communication between the power module and the BIF control unit is crucial for the effective operation of the windshield wiper and related systems. Regular checks and maintenance can prevent communication failures, thereby enhancing the reliability and safety of the vehicle’s electrical systems.

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