B1775 – Mirror Driver Up Circuit Short To Battery

The ODBII code B1775 indicates a fault in the mirror driver’s up circuit, specifically a short circuit to the battery, which means there is an electrical issue causing the circuit to continuously receive power.

The severity of ODBII code B1775 is moderate.

Common Causes For: B1774 Mirror Driver Up Circuit Open

• Shorted wiring or connectors
• Faulty mirror driver module
• Damaged mirror motor
• Corroded or damaged electrical connections
• Malfunctioning switch or control module
• Grounding issues
• Water intrusion or moisture damage

Common misdiagnosis for B1775 Mirror Driver Up Circuit Short To Battery

• Faulty mirror switch
• Wiring harness issues
• Shorted wiring
• Defective mirror motor
• Malfunctioning body control module (BCM)
• Incorrectly installed or damaged mirror assembly
• Battery or charging system problems

Common Troubleshooting Steps

The OBD-II code B1775 indicates a problem with the mirror driver circuit, specifically a short to battery in the up circuit. This code is often related to the power mirror system in vehicles. Here are some common troubleshooting steps to diagnose and resolve the issue:

• Visual Inspection:
• Check the wiring and connectors associated with the mirror assembly for any signs of damage, fraying, or corrosion.
• Inspect the mirror switch for any physical damage or wear.
• Check for Short Circuits:
• Use a multimeter to check for continuity in the mirror driver circuit. Look for any shorts to ground or battery voltage.
• Disconnect the mirror connector and check the resistance of the up circuit wire to ground. It should show infinite resistance (no continuity) if there is no short.
• Test the Mirror Switch:
• With the mirror switch disconnected, test the switch for proper operation. Ensure that it is not stuck or malfunctioning, which could cause a continuous signal to the mirror motor.
• Inspect the Mirror Motor:
• If the wiring and switch are in good condition, the issue may lie within the mirror motor itself. Test the motor by applying direct battery voltage to see if it operates correctly.
• Check for Faulty Components:
• If the mirror motor and switch are functioning properly, check for any other components in the circuit that may be faulty, such as relays or fuses.
• Scan for Additional Codes:
• Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Repair or Replace:
• Based on your findings, repair any damaged wiring or connectors. If the mirror motor or switch is faulty, replace them as necessary.
• Clear Codes and Test Drive:
• After making repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult Service Manual:
• If the issue persists, consult the vehicle’s service manual for specific wiring diagrams and troubleshooting procedures related to the mirror system.
• Professional Help:
• If you are unable to resolve the issue, consider seeking assistance from a professional mechanic or automotive technician who has experience with electrical systems. By following these steps, you should be able to identify and resolve the issue related to the B1775 code.