How to Diagnose and Solve B1734 Mirror Driver Vertical Switch Circuit Open Issues

Introduction

If you’re experiencing issues with your car’s mirror driver vertical switch circuit, you may see a B1734 error code. This can be frustrating, but with the right knowledge and tools, you can diagnose and solve the problem yourself. In this article, we’ll provide step-by-step instructions and useful tips to help you fix the issue and get your car back on the road.

What is the Mirror Driver Vertical Switch Circuit?

The mirror driver vertical switch circuit is responsible for controlling the vertical movement of your car’s mirrors. When you adjust the mirror using the switch, the circuit sends a signal to the mirror motor to move the mirror up or down. If there is an issue with the circuit, the mirror may not move or may move erratically.

Diagnosing the B1734 Error Code

The B1734 error code indicates that there is an open circuit in the mirror driver vertical switch circuit. To diagnose the issue, you’ll need a multimeter and a wiring diagram for your car. Here are the steps to follow:

Step 1: Check the Fuse

The first thing to check is the fuse for the mirror driver vertical switch circuit. Use your car’s manual to locate the fuse box and find the fuse for the circuit. Use a multimeter to test the fuse for continuity. If the fuse is blown, replace it and test the circuit again.

Step 2: Check the Wiring

If the fuse is not the issue, the next step is to check the wiring for the circuit. Use your car’s wiring diagram to locate the wires for the circuit. Use a multimeter to test the wires for continuity. If there is an open circuit, you’ll need to repair or replace the wiring.

Step 3: Check the Switch

If the wiring is not the issue, the next step is to check the switch for the circuit. Use your car’s manual to locate the switch and remove it from the circuit. Use a multimeter to test the switch for continuity. If the switch is faulty, replace it and test the circuit again.

Solving the B1734 Error Code

Once you’ve diagnosed the issue, it’s time to solve the B1734 error code. Here are the steps to follow:

Step 1: Repair or Replace the Wiring

If the issue is with the wiring, you’ll need to repair or replace it. Use your car’s wiring diagram to locate the damaged wires and repair or replace them as needed.

Step 2: Replace the Switch

If the issue is with the switch, you’ll need to replace it. Use your car’s manual to locate the switch and replace it with a new one.

Step 3: Test the Circuit

Once you’ve repaired or replaced the faulty component, test the circuit again using a multimeter. If the circuit is working properly, the B1734 error code should be resolved.

Conclusion

Diagnosing and solving the B1734 error code for the mirror driver vertical switch circuit can be a daunting task, but with the right knowledge and tools, it’s possible to fix the issue yourself. By following the steps outlined in this article, you can diagnose and solve the issue and get your car back on the road.

FAQs

1. Can I drive my car with a B1734 error code?

It’s not recommended to drive your car with a B1734 error code as it can affect the functionality of your mirrors. It’s best to diagnose and solve the issue before driving your car.

2. Do I need to take my car to a mechanic to fix the B1734 error code?

While it’s possible to diagnose and solve the B1734 error code yourself, if you’re not comfortable working with electrical components, it’s best to take your car to a mechanic.

3. How can I prevent the B1734 error code from happening again?

To prevent the B1734 error code from happening again, make sure to regularly check the wiring and switch for the mirror driver vertical switch circuit. If you notice any issues, address them promptly to prevent further damage.