How to Diagnose and Solve B1741 Mirror Passenger Vertical Switch Circuit Failure Issues

Introduction

If you’re experiencing issues with your car’s mirror passenger vertical switch circuit, you’re not alone. The B1741 error code is a common problem that many car owners face. Fortunately, diagnosing and solving this issue is relatively simple and can be done with a few basic tools and some knowledge of your car’s electrical system.

What is the B1741 Error Code?

The B1741 error code is a diagnostic trouble code (DTC) that indicates a failure in the mirror passenger vertical switch circuit. This circuit is responsible for controlling the vertical movement of the passenger-side mirror. When this circuit fails, the mirror may not move up or down, or it may move erratically.

Diagnosing the Issue

To diagnose the issue, you’ll need a digital multimeter (DMM) and a wiring diagram for your car’s mirror passenger vertical switch circuit. Here are the steps to follow:

Step 1: Check the Fuse

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

Step 2: Check the Wiring

If the fuse is not the issue, the next step is to check the wiring for the mirror passenger vertical switch circuit. Use your wiring diagram to locate the wires for the circuit and test them for continuity using your DMM. If there is a break in the wiring, repair or replace the damaged section.

Step 3: Check the Switch

If the wiring is not the issue, the next step is to check the mirror passenger vertical switch itself. Use your DMM to test the switch for continuity. If the switch is faulty, replace it with a new one.

Solving the Issue

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

Step 1: Replace the Fuse

If the fuse was the issue, replace it with a new one and test the mirror again.

Step 2: Repair or Replace the Wiring

If the wiring was the issue, repair or replace the damaged section and test the mirror again.

Step 3: Replace the Switch

If the switch was the issue, replace it with a new one and test the mirror again.

Conclusion

Diagnosing and solving B1741 mirror passenger vertical switch circuit failure issues is relatively simple and can be done with a few basic tools and some knowledge of your car’s electrical system. By following the steps outlined in this article, you can get your mirror working properly again in no time.

FAQs

1. Can I drive my car with a B1741 error code?

Yes, you can still drive your car with a B1741 error code. However, you may not be able to adjust the passenger-side mirror vertically.

2. How much does it cost to fix a B1741 error code?

The cost to fix a B1741 error code will depend on the cause of the issue. If it’s a simple fix like replacing a fuse, it may only cost a few dollars. If it’s a more complex issue like a faulty switch, it may cost several hundred dollars.

3. Can I fix a B1741 error code myself?

Yes, you can fix a B1741 error code yourself if you have some knowledge of your car’s electrical system and the right tools. However, if you’re not comfortable working with electrical systems, it’s best to take your car to a professional mechanic.