WOMS
B code body Medium severity

B1619 Wiper Rear Low Limit Input Circuit Failure

The OBD2 code B1619 indicates a malfunction in the rear wiper low limit input circuit, suggesting that the system is not receiving the expected signal from the rear wiper switch or sensor

Definition

The OBD2 code B1619 indicates a malfunction in the rear wiper low limit input circuit, suggesting that the system is not receiving the expected signal from the rear wiper switch or sensor

Common causes

  • Faulty rear wiper motor
  • Damaged wiring or connectors in the rear wiper circuit
  • Malfunctioning wiper switch
  • Failed body control module (BCM)
  • Poor ground connection
  • Corrosion in electrical connections
  • Short circuit in the rear wiper circuit

Common misdiagnoses

  • Faulty rear wiper motor
  • Bad wiper switch
  • Damaged wiring or connectors
  • Faulty body control module (BCM)
  • Incorrectly installed or malfunctioning rear wiper relay
  • Issues with the power supply to the rear wiper system

Troubleshooting steps

  1. 1. Check the Owner's Manual

    Refer to the vehicle's service manual for specific information related to the rear wiper system and the B1619 code

  2. 2. Inspect the Wiper Motor

  3. 3. Check the rear wiper motor for any visible damage or corrosion

  4. 4. Ensure that the motor is securely mounted and that the electrical connections are clean and tight

  5. 5. Examine Wiring and Connectors

  6. 6. Inspect the wiring harness and connectors leading to the rear wiper motor for any signs of damage, fraying, or corrosion

  7. 7. Look for any loose or disconnected wires that could affect the circuit

  8. 8. Test the Rear Wiper Switch

  9. 9. Check the rear wiper switch for proper operation. A faulty switch can send incorrect signals to the wiper motor

  10. 10. Use a multimeter to test the switch for continuity when activated

  11. 11. Check for Ground Issues

  12. 12. Ensure that the rear wiper motor has a good ground connection. A poor ground can lead to circuit failures

  13. 13. Use a multimeter to test the ground connection

  14. 14. Inspect the Fuse

  15. 15. Check the fuse related to the rear wiper system. A blown fuse can cause the system to malfunction

  16. 16. Replace any blown fuses and retest the system

  17. 17. Scan for Additional Codes

  18. 18. Use an OBD-II scanner to check for any additional trouble codes that may provide more context to the issue

  19. 19. Address any other codes that may be present

  20. 20. Perform a Visual Inspection

  21. 21. Look for any signs of water intrusion or damage in the area where the rear wiper motor is located

  22. 22. Check for any obstructions that may prevent the wiper from operating correctly

  23. 23. Test the Rear Wiper Operation

  24. 24. After checking all components, test the rear wiper to see if it operates correctly

  25. 25. If it does not work, further testing of the motor and circuit may be necessary

  26. 26. Consult a Professional

  27. 27. If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician who can perform more advanced diagnostics. By following these steps, you should be able to identify the cause of the B1619 code and take appropriate action to resolve the issue