How to Diagnose and Solve B1774 Mirror Driver Up Circuit Open Issues

Introduction

If you’re experiencing issues with your car’s mirror driver up circuit, you may see a B1774 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 go over the steps you need to take to diagnose and solve B1774 mirror driver up circuit open issues.

Step 1: Check the Wiring

The first step in diagnosing a B1774 error code is to check the wiring. Start by inspecting the wiring for any visible damage or wear. Look for any frayed wires, loose connections, or broken insulation. If you find any issues, repair or replace the wiring as needed.

Step 1.1: Check the Fuse

Before checking the wiring, make sure to check the fuse. A blown fuse can cause the mirror driver up circuit to malfunction. Check the owner’s manual to locate the fuse box and find the fuse for the mirror driver up circuit. If the fuse is blown, replace it with a new one.

Step 2: Check the Mirror Switch

If the wiring and fuse are in good condition, the next step is to check the mirror switch. The mirror switch is responsible for controlling the mirror driver up circuit. To check the switch, remove the switch from the door panel and inspect it for any visible damage or wear. If you find any issues, replace the switch with a new one.

Step 3: Check the Mirror Motor

If the wiring, fuse, and switch are all in good condition, the next step is to check the mirror motor. The mirror motor is responsible for moving the mirror up and down. To check the motor, remove the mirror from the door panel and inspect it for any visible damage or wear. If you find any issues, replace the motor with a new one.

Step 4: Check the Mirror Control Module

If the wiring, fuse, switch, and motor are all in good condition, the next step is to check the mirror control module. The mirror control module is responsible for controlling the mirror driver up circuit. To check the module, use a diagnostic tool to scan for any error codes. If the diagnostic tool detects a B1774 error code, replace the module with a new one.

Conclusion

Diagnosing and solving B1774 mirror driver up circuit open issues can be a daunting task, but with the right knowledge and tools, it can be done. By following the steps outlined in this article, you can diagnose and solve the problem yourself, saving time and money.

FAQs

1. Can I drive my car with a B1774 error code?

It’s not recommended to drive your car with a B1774 error code. This error code indicates a problem with the mirror driver up circuit, which can affect your ability to adjust your mirrors while driving.

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

The cost to replace a mirror control module can vary depending on the make and model of your car. On average, you can expect to pay between $200 and $500 for parts and labor.

3. Can I fix a B1774 error code myself?

Yes, you can fix a B1774 error code yourself if you have the right knowledge and tools. By following the steps outlined in this article, you can diagnose and solve the problem yourself, saving time and money. However, if you’re not comfortable working on your car, it’s best to take it to a professional mechanic.