How to Diagnose and Solve B1539 Mirror Driver Switch Assembly Circuit Failure Issues

Introduction

As a car owner, you may have experienced issues with your car’s mirror driver switch assembly 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 B1539 mirror driver switch assembly circuit failure issues.

What is B1539 Mirror Driver Switch Assembly Circuit Failure?

B1539 is a diagnostic trouble code (DTC) that indicates a failure in the mirror driver switch assembly circuit. This code is usually triggered when there is a problem with the mirror switch or the wiring that connects it to the car’s computer.

Diagnosing B1539 Mirror Driver Switch Assembly Circuit Failure

To diagnose B1539 mirror driver switch assembly circuit failure, you will need a scan tool that can read DTCs. Here are the steps to follow:

Step 1: Connect the Scan Tool

Connect the scan 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

Read the DTCs using the scan tool. Look for the B1539 code, which indicates a problem with the mirror driver switch assembly circuit.

Step 3: Inspect the Mirror Switch

Inspect the mirror switch for any signs of damage or wear. Check the wiring that connects the switch to the car’s computer for any signs of damage or corrosion.

Step 4: Test the Mirror Switch

Test the mirror switch using a multimeter. Set the multimeter to the continuity mode and check if there is continuity between the switch terminals when the switch is in the on position.

Step 5: Test the Wiring

Test the wiring that connects the mirror switch to the car’s computer using a multimeter. Check for continuity between the switch and the computer.

Solving B1539 Mirror Driver Switch Assembly Circuit Failure

Once you have diagnosed the problem, you can proceed to solve it. Here are the steps to follow:

Step 1: Replace the Mirror Switch

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

Step 2: Repair the Wiring

If the wiring is damaged or corroded, repair or replace it. Make sure to use the right gauge of wire and connectors.

Step 3: Clear the DTCs

Clear the DTCs using the scan tool. This will reset the car’s computer and turn off the check engine light.

Conclusion

B1539 mirror driver switch assembly circuit failure can be a frustrating problem for car owners. However, with the right tools and knowledge, you can diagnose and solve the problem yourself. Remember to always follow the steps carefully and use the right tools and parts for your car’s make and model.

FAQs

1. Can I drive my car with a B1539 code?

Yes, you can drive your car with a B1539 code. However, it is recommended to diagnose and solve the problem as soon as possible to avoid further damage to your car’s electrical system.

2. How much does it cost to replace a mirror switch?

The cost of replacing a mirror switch varies depending on the make and model of your car. On average, it can cost between $50 and $200.

3. Can I diagnose and solve B1539 mirror driver switch assembly circuit failure without a scan tool?

No, you cannot diagnose and solve B1539 mirror driver switch assembly circuit failure without a scan tool. The scan tool is necessary to read the DTCs and clear them once the problem is solved.