How to Diagnose and Solve B1819 Wiper Rear Motor Up Relay Coil Circuit Open Issues

Introduction

If you’re experiencing issues with your car’s wiper rear motor up relay coil circuit, you may be dealing with a B1819 error code. This can be a frustrating problem to deal with, but with the right knowledge and tools, you can diagnose and solve the issue on your own. In this article, we’ll provide step-by-step instructions and useful tips to help you fix the problem and get your car’s wipers working properly again.

What is the B1819 Error Code?

The B1819 error code is related to the wiper rear motor up relay coil circuit. This circuit is responsible for controlling the rear wiper motor, which is used to clean the rear windshield of your car. When this circuit is open, it means that there is a break in the electrical connection between the wiper motor and the control module. This can cause the wiper motor to stop working altogether, or it may cause it to work intermittently.

Diagnosing the Problem

To diagnose the B1819 error code, you’ll need a few tools, including a multimeter and a wiring diagram for your car’s wiper system. Here are the steps to follow:

Step 1: Check the Fuse

The first thing to check is the fuse for the wiper motor. Locate the fuse box in your car and find the fuse for the wiper motor. Use your multimeter to check if the fuse is blown. If it is, replace it and see if the problem is resolved.

Step 2: Check the Wiring

If the fuse is not the problem, the next step is to check the wiring for the wiper motor. Use your wiring diagram to locate the wires for the wiper motor up relay coil circuit. Check each wire for continuity using your multimeter. If you find a wire that does not have continuity, it means that there is a break in the circuit and the wire will need to be repaired or replaced.

Step 3: Check the Wiper Motor

If the wiring is not the problem, the next step is to check the wiper motor itself. Use your multimeter to check the resistance of the wiper motor. If the resistance is not within the manufacturer’s specifications, it means that the motor is faulty and will need to be replaced.

Solving the Problem

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

Step 1: Repair or Replace the Wiring

If the problem is with the wiring, you’ll need to repair or replace the affected wires. This may require some soldering or crimping, so make sure you have the necessary tools and skills to do the job properly.

Step 2: Replace the Wiper Motor

If the problem is with the wiper motor, you’ll need to replace it. Make sure you purchase a motor that is compatible with your car’s make and model. Follow the manufacturer’s instructions for installation.

Conclusion

Dealing with a B1819 error code can be frustrating, but with the right knowledge and tools, you can diagnose and solve the problem on your own. By following the steps outlined in this article, you’ll be able to get your car’s wipers working properly again in no time.

FAQs

1. Can I drive my car with a B1819 error code?

It’s not recommended to drive your car with a B1819 error code, as it can cause the wiper motor to stop working altogether. This can be dangerous if you’re driving in rainy or snowy conditions.

2. How much does it cost to replace a wiper motor?

The cost of replacing a wiper motor can vary depending on the make and model of your car, as well as the cost of the motor itself. On average, you can expect to pay between $100 and $300 for a new wiper motor.

3. Can I fix the wiring myself?

If you have the necessary tools and skills, you can repair or replace the wiring yourself. However, if you’re not comfortable working with electrical systems, it’s best to leave the job to a professional mechanic.