RLC 522433.03 – Rear Window Wiper, Voltage Too High

RLC 522433.03 (RLC )

Code: 522433.03



This diagnostic trouble code is generated if a voltage higher than 16 volts is registered at the output to the rear window wiper. This indicates that the circuit is shorted to a supply lead.


When this error is detected, the control software may experience limited or no functionality of the rear windshield wiper.


  • Inspect Rear Window Wiper Circuit:
    • Check the wiring and connectors associated with the rear window wiper for signs of shorts to a supply lead. Look for damaged insulation or exposed wires. Repair or replace any compromised wiring.
  • Verify Voltage Regulation:
    • Ensure the voltage regulator is functioning correctly and maintaining proper voltage levels. Replace the regulator if it is faulty.
  • Test Rear Window Wiper:
    • Test the rear window wiper to ensure it is not damaged or causing the voltage increase. Replace any faulty components.
  • Check Power Supply:
    • Ensure the power supply to the rear window wiper is stable and within the specified range. Inspect for any issues that could cause an overvoltage condition.


Excessive voltage can damage the rear window wiper and associated circuitry. Regular inspection and maintenance of the electrical system are essential to prevent such issues.

Control Units: John Deere

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