How to Diagnose and Solve B1745 Mirror Passenger Horizontal Switch Circuit Failure Issues

Introduction

As a car owner, you may have experienced issues with your car’s mirror passenger horizontal switch circuit. This can be frustrating, especially if you don’t know how to diagnose and solve the problem. In this article, we will guide you through the process of diagnosing and solving B1745 mirror passenger horizontal switch circuit failure issues.

What is B1745 Mirror Passenger Horizontal Switch Circuit Failure?

B1745 is a diagnostic trouble code (DTC) that indicates a failure in the mirror passenger horizontal switch circuit. This means that there is a problem with the switch that controls the horizontal movement of the passenger side mirror. The switch may be stuck, damaged, or malfunctioning, causing the mirror to move erratically or not at all.

Diagnosing B1745 Mirror Passenger Horizontal Switch Circuit Failure

To diagnose B1745 mirror passenger horizontal switch circuit failure, you will need a diagnostic tool that can read DTCs. Here are the steps to follow:

Step 1: Connect the Diagnostic Tool

Connect the diagnostic tool to the car’s OBD-II port, which is usually located under the dashboard on the driver’s side.

Step 2: Read the DTCs

Use the diagnostic tool to read the DTCs. Look for the B1745 code, which indicates a failure in the mirror passenger horizontal switch circuit.

Step 3: Inspect the Switch

Inspect the mirror passenger horizontal switch for any signs of damage or malfunction. Check if the switch is stuck or if there is any debris blocking its movement.

Step 4: Test the Switch

Test the switch using a multimeter to check if it is functioning properly. Follow the manufacturer’s instructions on how to test the switch.

Step 5: Check the Wiring

Check the wiring that connects the switch to the mirror. Look for any signs of damage or corrosion. Test the wiring using a multimeter to check if there is continuity.

Solving B1745 Mirror Passenger Horizontal Switch Circuit Failure

Once you have diagnosed the problem, you can proceed to solve B1745 mirror passenger horizontal switch circuit failure. Here are the steps to follow:

Step 1: Replace the Switch

If the switch is damaged or malfunctioning, replace it with a new one. Make sure to get the right switch for your car’s make and model.

Step 2: Clean the Switch

If the switch is stuck or dirty, clean it using a contact cleaner. Follow the manufacturer’s instructions on how to clean the switch.

Step 3: Repair the Wiring

If the wiring is damaged or corroded, repair or replace it. Make sure to use the right type of wire and connectors for your car’s make and model.

Tips to Prevent B1745 Mirror Passenger Horizontal Switch Circuit Failure

To prevent B1745 mirror passenger horizontal switch circuit failure, here are some tips to follow:

– Clean the switch regularly to prevent debris from blocking its movement.
– Avoid using excessive force when adjusting the mirror.
– Check the wiring regularly for any signs of damage or corrosion.

Conclusion

B1745 mirror passenger horizontal switch circuit failure can be a frustrating problem for car owners. However, by following the steps outlined in this article, you can diagnose and solve the problem quickly and easily. Remember to follow the tips to prevent the problem from occurring in the future.

FAQs

1. Can I drive my car with B1745 mirror passenger horizontal switch circuit failure?

Yes, you can still drive your car with B1745 mirror passenger horizontal switch circuit failure. However, you will not be able to adjust the passenger side mirror horizontally.

2. How much does it cost to replace the mirror passenger horizontal switch?

The cost of replacing the mirror passenger horizontal switch varies depending on the make and model of your car. It can range from $50 to $200.

3. Can I replace the mirror passenger horizontal switch myself?

Yes, you can replace the mirror passenger horizontal switch yourself if you have the right tools and knowledge. However, if you are not confident in your abilities, it is best to have a professional do it for you.