WOMS
B code body Medium severity

B1615 Wiper Rear Disable Switch Circuit Failure

The OBD2 code B1615 indicates a malfunction in the rear wiper disable switch circuit, which may prevent the rear wiper from functioning properly

Definition

The OBD2 code B1615 indicates a malfunction in the rear wiper disable switch circuit, which may prevent the rear wiper from functioning properly

Common causes

  • Faulty rear wiper disable switch
  • Damaged wiring or connectors in the circuit
  • Short circuit in the wiring
  • Open circuit in the wiring
  • Corroded connectors
  • Malfunctioning body control module (BCM)
  • Poor ground connection
  • Water intrusion or moisture damage

Common misdiagnoses

  • Faulty rear wiper motor
  • Bad wiper relay
  • Wiring issues or shorts in the harness
  • Malfunctioning body control module (BCM)
  • Incorrectly diagnosed switch failure
  • Issues with the front wiper system affecting the rear wiper
  • Battery or power supply problems affecting the circuit

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect the Rear Wiper Switch

    Check the rear wiper switch for any signs of damage or wear. Ensure that it is functioning properly and that there are no loose connections

  3. 3. Examine Wiring and Connectors

    Inspect the wiring and connectors associated with the rear wiper disable switch. Look for frayed wires, corrosion, or loose connections that could cause a poor electrical signal

  4. 4. Test the Rear Wiper Disable Switch

    Use a multimeter to test the rear wiper disable switch for continuity. If the switch is faulty, it may need to be replaced

  5. 5. Check the Rear Wiper Motor

    Ensure that the rear wiper motor is functioning correctly. A malfunctioning motor can sometimes cause issues with the disable switch circuit

  6. 6. Inspect the Body Control Module (BCM)

    The BCM often controls the rear wiper system. Check for any faults in the BCM and ensure that it is receiving the correct signals from the rear wiper switch

  7. 7. Look for Ground Issues

    Ensure that the ground connections for the rear wiper system are secure and free of corrosion. A poor ground can lead to circuit failures

  8. 8. Check Fuses

    Inspect the fuses related to the rear wiper system. A blown fuse can interrupt the circuit and cause the code to trigger

  9. 9. Perform a Visual Inspection

    Conduct a thorough visual inspection of the entire rear wiper system, including the motor, linkage, and any associated components, for any signs of damage or wear

  10. 10. Clear the Code and Test Drive

    After performing the necessary repairs, clear the trouble code using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.1

  11. 11. Consult a Professional

    If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1615 code