B1697 – Mirror Driver/Passenger Switch Circuit Short To Battery

The ODBII 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.

The severity of ODBII code B1697 is moderate.

Common Causes For: B1696 Autolamp On Circuit Short To Ground

• 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 misdiagnosis for B1697 Mirror Driver/Passenger Switch Circuit Short To Battery

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

Common Troubleshooting Steps

When dealing with an OBD-II code B1697, which indicates a “Mirror Driver/Passenger Switch Circuit Short To Battery,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• 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.
• **Check Connectors:** Ensure that all connectors are securely attached and free from corrosion. Disconnect and reconnect them to ensure a good connection.
• 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.
• **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.
• 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.
• **Look for Water Damage:** Sometimes, moisture can cause shorts. Inspect the mirror assembly for signs of water intrusion.
• 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.
• **Inspect Ground Connections:** Ensure that all ground connections related to the mirror switch are secure and free from corrosion.
• 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.
• 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.
• **Software Updates:** Check if there are any software updates available for the BCM that may address known issues.
• 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.
• 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.
• **Test Drive:** Take the vehicle for a test drive to see if the code reappears. Monitor the mirror switch operation during the drive.
• 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.