How to Fix B1346 Heated Backlite Input Circuit Short to Battery

Introduction

If you’re experiencing the B1346 error code on your car, it means that there is a problem with the heated backlite input circuit. This can be a frustrating issue to deal with, but fortunately, it’s something that you can fix on your own with a little bit of know-how. In this article, we’ll walk you through the steps you need to take to fix the B1346 error code and get your car back on the road.

Step 1: Check the Wiring

The first thing you should do when you encounter the B1346 error code is to check the wiring. This is often the cause of the problem, and it’s something that you can fix relatively easily. Start by inspecting the wiring for any signs of damage or wear. Look for frayed wires, loose connections, or any other issues that could be causing the problem.

Step 1.1: Disconnect the Battery

Before you start working on the wiring, it’s important to disconnect the battery. This will prevent any electrical shocks or other hazards while you’re working on the car. Make sure to disconnect the negative terminal first, then the positive terminal.

Step 1.2: Inspect the Wiring

Once the battery is disconnected, you can start inspecting the wiring. Look for any signs of damage or wear, and make note of any areas that need to be repaired or replaced. If you find any damaged wires, you’ll need to replace them with new ones. If you find loose connections, you can tighten them up with a pair of pliers.

Step 1.3: Reconnect the Battery

Once you’ve inspected and repaired the wiring, it’s time to reconnect the battery. Make sure to connect the positive terminal first, then the negative terminal. This will prevent any electrical shocks or other hazards while you’re working on the car.

Step 2: Check the Fuse

If the wiring isn’t the problem, the next thing you should check is the fuse. The B1346 error code can be caused by a blown fuse, so it’s important to check this before moving on to other solutions. Start by locating the fuse box in your car. This is usually located under the dashboard or in the engine compartment.

Step 2.1: Locate the Fuse Box

The fuse box is usually located under the dashboard or in the engine compartment. Consult your car’s manual to find the exact location of the fuse box.

Step 2.2: Check the Fuse

Once you’ve located the fuse box, you can start checking the fuses. Look for the fuse that corresponds to the heated backlite input circuit. This should be labeled in your car’s manual. If the fuse is blown, you’ll need to replace it with a new one.

Step 2.3: Replace the Fuse

To replace the fuse, simply remove the old one and insert the new one. Make sure to use a fuse with the same amperage rating as the old one. This will prevent any electrical problems down the line.

Step 3: Check the Relay

If the wiring and fuse aren’t the problem, the next thing you should check is the relay. The relay is responsible for sending power to the heated backlite input circuit, so if it’s not working properly, you’ll need to replace it.

Step 3.1: Locate the Relay

The relay is usually located in the engine compartment. Consult your car’s manual to find the exact location of the relay.

Step 3.2: Test the Relay

To test the relay, you’ll need a multimeter. Set the multimeter to the continuity setting and touch the probes to the relay terminals. If the multimeter beeps, the relay is working properly. If it doesn’t beep, you’ll need to replace the relay.

Step 3.3: Replace the Relay

To replace the relay, simply remove the old one and insert the new one. Make sure to use a relay with the same specifications as the old one. This will ensure that it works properly with your car’s electrical system.

Conclusion

Fixing the B1346 error code can be a frustrating experience, but with a little bit of know-how, it’s something that you can fix on your own. By following the steps outlined in this article, you can diagnose and fix the problem with your car’s heated backlite input circuit. Remember to always work safely and consult your car’s manual if you’re unsure about anything.

FAQs

1. Can I fix the B1346 error code on my own?

Yes, you can fix the B1346 error code on your own with a little bit of know-how. By following the steps outlined in this article, you can diagnose and fix the problem with your car’s heated backlite input circuit.

2. What causes the B1346 error code?

The B1346 error code is caused by a problem with the heated backlite input circuit. This can be caused by a variety of issues, including damaged wiring, a blown fuse, or a faulty relay.

3. Do I need any special tools to fix the B1346 error code?

You don’t need any special tools to fix the B1346 error code. However, you will need a multimeter to test the relay. If you don’t have a multimeter, you can purchase one at your local hardware store or online.