BIF 522427.04 – High Current Fault in Windshield Wiper Relay Circuit. John Deere System Advisory.

BIF 522427.04 (BIF )

Code: 522427.04



Error code BIF 522427.04 is triggered when the Power Module PC0 detects an abnormal current exceeding 1 amp at the output for the windshield wiper relay (lead 2046) while the relay is activated. This high current condition typically indicates a short to ground within the circuit, which can lead to potential overheating, damage to electrical components, and increased risk of electrical fires.


The power module may automatically initiate a protective shutdown of the windshield wiper circuit to prevent further damage and mitigate any safety risks.


  • Inspect Wiring for Shorts: Carefully examine the wiring associated with lead 2046, looking for signs of damage, fraying, or exposure that could result in a short to ground.
  • Test Relay and Circuit Components: Utilize electrical testing tools to assess the relay and surrounding circuitry for faults. Replace the relay if it shows signs of malfunction or if it fails continuity tests.
  • Measure Current Levels: Use a multimeter to verify the exact current levels in the circuit when the windshield wiper is activated to better understand the severity of the overcurrent and help pinpoint the exact location of the short.
  • Replace Damaged Components: If specific components are identified as faulty or damaged during the diagnostics, replace them to ensure the integrity of the circuit.
  • Evaluate Power Module PC0: Confirm that the Power Module PC0 is functioning correctly and not contributing to the issue by inaccurately measuring or failing to regulate current.
  • Reset Systems and Recheck: After repairs, reset the system to clear the error code. Test the windshield wiper system to ensure that it operates correctly and the current levels remain within safe operating parameters.


Addressing electrical issues such as shorts promptly is crucial to prevent further damage to the electrical system and ensure safe operation. Regular maintenance and inspections can help detect and correct such faults before they lead to more serious problems.

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