B1736 – Mirror Driver Vertical Switch Circuit Short To Ground

The ODBII code B1736 indicates a fault in the vertical switch circuit of the mirror driver, specifically a short to ground condition, which means there is an unintended connection to the ground that affects the operation of the mirror adjustment.

The severity of ODBII code B1736 is generally considered moderate.

Common Causes For: B1735 Mirror Driver Vertical Switch Circuit Short To Battery

• Shorted wiring or connectors in the mirror switch circuit.
• Faulty mirror switch.
• Damaged mirror motor.
• Grounding issues in the circuit.
• Corroded or damaged connectors.
• Faulty body control module (BCM).

Common misdiagnosis for B1736 Mirror Driver Vertical Switch Circuit Short To Ground

• Faulty mirror switch
• Wiring harness issues
• Shorted wiring
• Faulty mirror motor
• Body control module (BCM) malfunction
• Incorrectly installed or damaged mirror assembly
• Grounding issues in the electrical system

Common Troubleshooting Steps

The OBD-II code B1736 refers to a problem with the mirror driver vertical switch circuit, indicating a short to ground. Here are some common troubleshooting steps to diagnose and resolve this issue:

• Check the Vehicle’s Manual: Refer to the vehicle’s service manual for specific wiring diagrams and component locations related to the mirror driver vertical switch.
• Visual Inspection:
• Inspect the wiring harness and connectors associated with the mirror switch for any signs of damage, fraying, or corrosion.
• Look for any loose connections or broken wires that could cause a short to ground.
• Test the Mirror Switch:
• Disconnect the mirror switch from the wiring harness.
• Use a multimeter to test the switch for continuity. If the switch is faulty, it may need to be replaced.
• Check for Shorts:
• With the switch disconnected, use a multimeter to check for continuity between the mirror switch circuit wires and ground. If there is continuity, there is a short to ground somewhere in the circuit.
• Inspect the wiring harness for pinched or damaged wires that could be causing the short.
• Inspect the Mirror Assembly:
• If the vehicle has power mirrors, check the mirror assembly for any signs of damage or water intrusion that could affect the electrical components.
• Check for Faulty Components:
• If the wiring and switch are in good condition, check other components in the circuit, such as the mirror motor or any related control modules, for faults.
• Clear the Code:
• After performing repairs, clear the trouble code using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• 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 and resolve the issue related to the B1736 code.