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B code body Medium severity

B1636 Mirror Driver Right Circuit Open

The OBD2 code B1636 indicates a fault in the right mirror driver's circuit, specifically that the circuit is open, meaning there is a break or disconnection preventing proper operation of the right side mirror

Definition

The OBD2 code B1636 indicates a fault in the right mirror driver's circuit, specifically that the circuit is open, meaning there is a break or disconnection preventing proper operation of the right side mirror

Common causes

  • Faulty right mirror assembly
  • Damaged wiring or connectors
  • Open circuit in the mirror driver circuit
  • Malfunctioning body control module (BCM)
  • Corroded or loose connections
  • Blown fuse related to the mirror system
  • Faulty switch or control for the mirror adjustment

Common misdiagnoses

  • Faulty right side mirror assembly
  • Wiring harness issues
  • Malfunctioning body control module (BCM)
  • Defective mirror switch
  • Short circuit in the mirror circuit
  • Issues with the vehicle's electrical system
  • Faulty left side mirror driver circuit
  • Software or programming errors in the vehicle's system

Troubleshooting steps

  1. 1. Visual Inspection

  2. 2. Check the wiring harness and connectors leading to the right mirror for any visible damage, corrosion, or loose connections

  3. 3. Inspect the mirror assembly itself for any signs of physical damage

  4. 4. Check Fuses

  5. 5. Locate the fuse box and check the fuses related to the mirror control system. Replace any blown fuses

  6. 6. Test the Mirror Motor

  7. 7. If accessible, test the mirror motor by applying direct power to it to see if it operates. If it does not work, the motor may be faulty and need replacement

  8. 8. Check for Ground Issues

  9. 9. Ensure that the ground connection for the mirror circuit is secure and free of corrosion. A poor ground can cause an open circuit

  10. 10. Use a Multimeter

  11. 11. With the vehicle's ignition on, use a multimeter to check for voltage at the mirror connector. If there is no voltage, trace the wiring back to the control module or switch

  12. 12. Check for continuity in the wiring from the control module to the mirror. An open circuit will show no continuity

  13. 13. Inspect the Control Switch

  14. 14. Test the mirror control switch to ensure it is functioning properly. A faulty switch can prevent the mirror from receiving power

  15. 15. Scan for Additional Codes

  16. 16. Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

  17. 17. Check the Body Control Module (BCM)

  18. 18. If all other components check out, the issue may lie within the BCM. Inspect for any faults or issues with the module

  19. 19. Consult Wiring Diagrams

  20. 20. Refer to the vehicle’s wiring diagrams to understand the circuit layout and identify any potential points of failure

  21. 21. Professional Diagnosis

  22. 22. If the issue persists after performing these steps, consider seeking help from a professional mechanic or automotive technician who can perform more advanced diagnostics. By following these steps, you should be able to identify the cause of the B1636 code and take appropriate action to resolve the issue