WOMS
B code body Medium severity

B1697 Mirror Driver/Passenger Switch Circuit Short To Battery

The OBD2 code B1697 indicates a short circuit in the driver or passenger mirror switch circuit, causing it to connect directly to the battery, which can lead to malfunctioning of the mirror controls

Definition

The OBD2 code B1697 indicates a short circuit in the driver or passenger mirror switch circuit, causing it to connect directly to the battery, which can lead to malfunctioning of the mirror controls

Common causes

  • Shorted wiring or connectors
  • Faulty mirror switch
  • Damaged mirror motor
  • Corroded or loose connections
  • Faulty body control module (BCM)
  • Water intrusion or moisture damage
  • Aftermarket modifications or installations

Common misdiagnoses

  • Faulty mirror switch
  • Wiring harness issues
  • Shorted wiring
  • Faulty body control module (BCM)
  • Defective mirror motor
  • Grounding issues
  • Incorrectly installed aftermarket accessories

Troubleshooting steps

  1. 1. Check the Vehicle's Wiring and Connectors

    Inspect Wiring: Look for any visible damage to the wiring harness related to the mirror switch. Check for frayed wires, corrosion, or any signs of wear

  2. 2. Check Connectors

    Ensure that all connectors are securely attached and free from corrosion. Disconnect and reconnect them to ensure a good connection

  3. 3. Test the Mirror Switch

    Functionality Test: Use a multimeter to test the mirror switch for proper operation. Check for continuity in the switch when it is activated

  4. 4. Short Circuit Check

    With the switch disconnected, check for continuity between the switch terminals and ground. There should be no continuity if the switch is functioning correctly

  5. 5. Inspect the Mirror Assembly

    Check the Mirror Motor: If the mirror has a motorized function, ensure that the motor is not shorted. Disconnect the motor and check for resistance

  6. 6. Look for Water Damage

    Sometimes, moisture can cause shorts. Inspect the mirror assembly for signs of water intrusion

  7. 7. Check for Short Circuits

    Use a Multimeter: With the vehicle off, use a multimeter to check for continuity between the mirror switch circuit and battery voltage. A short circuit will show continuity where it shouldn’t

  8. 8. Inspect Ground Connections

    Ensure that all ground connections related to the mirror switch are secure and free from corrosion

  9. 9. Scan for Additional Codes

    Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

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

    Check BCM Functionality: The BCM controls many electrical functions in the vehicle, including the mirror switch. Ensure that the BCM is functioning correctly and has no internal faults

  11. 11. Software Updates

    Check if there are any software updates available for the BCM that may address known issues

  12. 12. Perform a Visual Inspection of Related Components

    Look for Other Issues: Inspect other components that may be related to the mirror switch, such as door locks or window switches, to see if they are functioning properly

  13. 13. Clear the Code and Test Drive

    Clear the Code: After performing the above checks and repairs, clear the trouble code using an OBD-II scanner

  14. 14. Test Drive

    Take the vehicle for a test drive to see if the code reappears. Monitor the mirror switch operation during the drive

  15. 15. Consult a Professional

    If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or an automotive electrician for further diagnosis. By following these steps, you should be able to identify the cause of the B1697 code and take appropriate action to resolve the issue