WOMS
B code body Medium severity

B1632 Mirror Driver Left Circuit Open

The OBD2 code B1632 indicates that there is an open circuit in the left mirror driver, which means the electrical connection to the left side mirror is interrupted or not functioning properly

Definition

The OBD2 code B1632 indicates that there is an open circuit in the left mirror driver, which means the electrical connection to the left side mirror is interrupted or not functioning properly

Common causes

  • Faulty left mirror assembly
  • Damaged wiring or connectors
  • Open circuit in the mirror driver circuit
  • Failed mirror control switch
  • Corroded or loose connections
  • Malfunctioning body control module (BCM)

Common misdiagnoses

  • Faulty left side mirror assembly
  • Wiring harness issues
  • Malfunctioning body control module (BCM)
  • Defective mirror switch
  • Short circuit in the mirror circuit
  • Grounding issues
  • Incorrectly installed or damaged mirror connector
  • Faulty power supply to the mirror system

Troubleshooting steps

  1. 1. Visual Inspection

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

  3. 3. Inspect the mirror itself for any physical damage

  4. 4. Check Fuses

  5. 5. Locate the fuse box and check for any blown fuses related to the mirror or power windows. Replace any blown fuses and see if the issue persists

  6. 6. Test the Mirror Switch

  7. 7. Use a multimeter to test the mirror control switch for continuity. If the switch is faulty, it may need to be replaced

  8. 8. Inspect the Mirror Motor

  9. 9. If possible, test the mirror motor directly by applying power to it. If the motor does not operate, it may be defective and require replacement

  10. 10. Check for Ground Issues

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

  12. 12. Use a Multimeter

  13. 13. Measure the voltage at the mirror connector while operating the mirror switch. If there is no voltage, trace the wiring back to the switch and check for continuity

  14. 14. Scan for Additional Codes

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

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

  17. 17. If all other components check out, the issue may lie within the BCM. Check for any software updates or faults in the module

  18. 18. Wiring Diagram Reference

  19. 19. Consult the vehicle’s wiring diagram to trace the circuit and identify any other components that may be involved in the left mirror operation

  20. 20. Professional Diagnosis

  21. 21. If the issue remains unresolved after 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 B1632 code and take appropriate action to resolve the issue