B1816 Wiper Rear Motor Down Relay Coil Circuit Short To Battery

How to Diagnose and Solve B1816 Wiper Rear Motor Down Relay Coil Circuit Short To Battery Issues

Introduction

If you’re experiencing issues with your car’s wiper rear motor down relay coil circuit short to battery, you’re not alone. This is a common problem that can be frustrating to deal with. However, with the right tools and knowledge, you can diagnose and solve this issue on your own. In this article, we’ll provide you with step-by-step instructions and useful tips to help you fix this problem.

What is B1816 Wiper Rear Motor Down Relay Coil Circuit Short To Battery?

B1816 is a diagnostic trouble code (DTC) that indicates a problem with the wiper rear motor down relay coil circuit short to battery. This means that there is a short circuit in the wiring that connects the wiper rear motor down relay coil to the battery. This can cause the wiper motor to malfunction, resulting in the wipers not working properly.

Diagnosing the Problem

The first step in diagnosing the problem is to check the wiper motor fuse. If the fuse is blown, replace it and see if the problem is resolved. If the fuse is not the issue, you’ll need to check the wiring and connections.

Start by checking the wiring harness that connects the wiper motor to the relay. Look for any signs of damage or wear, such as frayed wires or loose connections. If you find any issues, repair or replace the damaged parts.

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Next, use a multimeter to check the voltage at the wiper motor. Connect the multimeter to the positive and negative terminals of the motor and turn on the wipers. If the voltage is not within the specified range, there may be a problem with the relay or the wiring.

Solving the Problem

If you’ve determined that the problem is with the wiring or the relay, you’ll need to replace the faulty parts. Start by disconnecting the battery to prevent any electrical shocks.

Next, remove the old relay and replace it with a new one. Make sure to connect the wiring harness correctly and securely.

If the problem is with the wiring, you’ll need to repair or replace the damaged parts. This may involve splicing in new wires or replacing entire sections of the wiring harness.

Once you’ve replaced the faulty parts, reconnect the battery and test the wipers to ensure that they’re working properly.

Useful Tips

– Always disconnect the battery before working on any electrical components in your car.
– Use a multimeter to check the voltage at the wiper motor to determine if the problem is with the wiring or the relay.
– Check the wiring harness for any signs of damage or wear, such as frayed wires or loose connections.
– Replace any faulty parts with new ones to ensure that the problem is resolved.

Conclusion

Dealing with a B1816 wiper rear motor down relay coil circuit short to battery issue can be frustrating, but with the right tools and knowledge, you can diagnose and solve the problem on your own. By following the steps outlined in this article and using the useful tips provided, you can get your wipers working properly again in no time.

FAQs

Q: Can I drive my car with a B1816 wiper rear motor down relay coil circuit short to battery issue?
A: It’s not recommended to drive your car with this issue as it can cause the wipers to malfunction, which can be dangerous in inclement weather.

Q: How much does it cost to replace a wiper motor relay?
A: The cost of replacing a wiper motor relay can vary depending on the make and model of your car and where you get the replacement part. On average, it can cost anywhere from $20 to $100.

Q: Can I fix a B1816 wiper rear motor down relay coil circuit short to battery issue on my own?
A: Yes, you can diagnose and fix this issue on your own if you have the right tools and knowledge. However, if you’re not comfortable working on electrical components in your car, it’s best to take it to a professional mechanic.