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Harley Code B1343: Troubleshooting Guide for Electrical System Issues

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Chase Manhattan

Chase Manhattan Avatar
Owner and Editor at The Wrench Network

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Hey y’all, it’s Chase Manhattan! I’m a life-long automotive and motorcycle enthusiast with a knack for diagnostics that I hope to share with you! Lately, I’ve been running my own motorcycle rental business, which you can read about here, and it has been a great experience that has allowed me to own numerous bikes that I probably couldn’t justify otherwise. Plus, it’s been a great way to experience new places while on vacation. If you haven’t heard of them before, I definitely recommend checking out the Riders-Share platform if you get the itch to ride while away from home, or if you want to explore a cheaper way to own and ride motorcycles!

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If you own a Harley-Davidson motorcycle, you may have encountered the B1343 code. This code indicates that the rear left speaker is shorted low, which can cause issues with your bike’s sound system. Fortunately, there are steps you can take to diagnose and fix this problem.

To read the DTC codes on a Harley-Davidson without a diagnostic tool, you can use the trip reset button. Once you have identified the B1343 code, you can begin troubleshooting the issue. This may involve checking the wiring and connections for the rear left speaker, as well as testing the speaker itself to ensure it is functioning properly. By taking these steps, you can resolve the B1343 code and get back to enjoying your Harley’s sound system.

Overall, the B1343 code is a common issue that can be easily addressed with some basic troubleshooting. Whether you are a seasoned Harley owner or a new rider, it is important to be familiar with the DTC codes and how to diagnose and fix any problems that arise. By taking a proactive approach to maintenance and repairs, you can keep your Harley-Davidson running smoothly and enjoyably for years to come.

Understanding Harley Code B1343

If you own a Harley-Davidson motorcycle and have encountered the B1343 error code, don’t worry. This section will help you understand what this code means and what you can do to fix it.

Error Code Basics

The B1343 code is a diagnostic trouble code (DTC) that is stored in your Harley’s onboard computer system. This code indicates that there is a problem with the rear left speaker, which has been shorted low. This means that there is a problem with the speaker’s wiring or the speaker itself.

When your Harley’s computer detects a problem, it will store the code in its memory. This code will remain there until it is cleared or until the problem is fixed. If the code is cleared, it will be marked as “pending” until the computer has had a chance to check the system again.

Specifics of B1343

The B1343 code specifically indicates that the rear left speaker is shorted low. This means that the speaker’s resistance is lower than it should be, which can cause problems with the audio system.

To fix this problem, you will need to check the wiring and connections for the rear left speaker. If the wiring and connections are fine, you may need to replace the speaker itself. Once the problem has been fixed, you can clear the code by using the odometer reset button.

In summary, the B1343 code is a DTC that indicates a problem with the rear left speaker in your Harley-Davidson motorcycle. By understanding this code and its specifics, you can take the necessary steps to fix the problem and get back to enjoying your ride.

Troubleshooting Steps

If you are experiencing issues with Harley code B1343, there are a few troubleshooting steps you can take to diagnose and fix the problem. Follow these steps to get started:

Initial Diagnosis

Before you start troubleshooting, it’s important to understand what Harley code B1343 means. This code indicates that there is a problem with the rear left speaker being shorted low. This can be caused by a variety of issues, including a faulty speaker, damaged wiring, or a problem with the BCM.

To diagnose the problem, you will need to perform a visual inspection of the wiring and connectors associated with the power door lock relay. Look for any signs of damage or wear, such as frayed wires or loose connections. You should also check the speaker itself to make sure it is functioning properly.

Tools and Equipment Needed

To perform a thorough diagnosis and repair of Harley code B1343, you will need a few tools and pieces of equipment. Here’s what you’ll need:

  • A diagnostic tool: You can read the DTC codes on a Harley-Davidson without a diagnostic tool by using the trip reset button. The main steps in this process are as follows: Turn the ignition switch to the “OFF” position. Next, hold down the odometer reset button and turn the ignition switch back to the “ON” position. Keep holding the button until the word “DIAG” appears on your speedometer screen.

  • A voltmeter: A voltmeter is essential for testing the battery voltage. A low battery voltage can cause BCM problems. Check the battery voltage and make sure it’s at least 12.5 volts.

  • Fuses: Check the fuses for the BCM and make sure they’re not blown.

Once you have these tools and equipment, you can begin the troubleshooting process. By following these steps, you can diagnose and fix Harley code B1343 quickly and easily.

Electrical System Overview

Understanding the electrical system of your Harley Davidson is important for troubleshooting and fixing any issues that may arise. The electrical system is responsible for powering various components of the motorcycle, including the ignition system, lighting, and accessories.

Battery and Charging System

The battery is the heart of the electrical system, providing power to start the motorcycle and run the electrical components. A fully charged battery should read above 12.2 volts. If your battery reads low, try slow charging the battery for 12 hours and re-test. The charging system should be working properly if the battery voltage increases to above 14 volts when the engine is running.

Ignition System Components

The ignition system is responsible for starting the motorcycle and keeping it running. The ignition switch is the main component of the system, which controls the flow of current to the other components. The Engine Control Module (ECM) is responsible for controlling the ignition timing and fuel injection. If the ECM detects a fault, it may trigger a trouble code like the B1343 code.

In conclusion, the electrical system of your Harley Davidson is crucial for proper functioning of the motorcycle. Understanding the battery and charging system, as well as the ignition system components, can help you diagnose and fix any issues that may arise.

Body Control Module (BCM) Functionality

The Body Control Module (BCM) is an essential component of your Harley Davidson bike’s electrical system. It plays a vital role in regulating various electrical processes, including lighting, ignition, and other critical functionalities. In this section, we will discuss the BCM’s functionality and the common issues associated with it.

BCM Role in Error Management

The BCM is responsible for detecting and managing errors in your Harley Davidson bike’s electrical system. It monitors various sensors and modules to ensure that they are functioning correctly. If it detects an error, it will log the error code and alert you via the dashboard warning light.

One common error code associated with the BCM is the B1343 error code. This code indicates that the Left-Hand Control Module (LHCM) or Right-Hand Control Module (RHCM) has an internal error. The BCM is responsible for detecting this error and alerting you via the warning light.

Common BCM Issues

Like any other electrical component, the BCM can experience problems that affect its functionality. Some common issues associated with the BCM include:

  • Low battery voltage: A low battery voltage can cause BCM problems. Check the battery voltage and make sure it’s at least 12.5 volts.
  • Blown fuses: Check the fuses for the BCM and make sure they’re not blown.
  • Dirty or loose connections: Check the connections to the BCM and make sure they’re clean and tight.

If you are experiencing any issues with your Harley Davidson bike’s electrical system, it’s essential to have it checked by a professional mechanic. They can diagnose the problem and provide you with the necessary repairs to get your bike back on the road.

Harley-Davidson Electrical Codes

If you own a Harley-Davidson motorcycle, you may encounter some electrical issues that can cause error codes to appear on your dashboard. These codes can be helpful in diagnosing the problem and finding the right solution. In this section, we will discuss some of the most common electrical codes you may encounter, including B1346, B1338, B1103, and B1153.

Code B1346 and Related Issues

Code B1346 indicates that the rear left speaker is shorted low. This can be caused by a damaged speaker, wiring issues, or a faulty amplifier. To fix this issue, you will need to diagnose the problem and replace the damaged parts.

Another related issue is code B1343, which indicates that the rear left speaker is shorted high. This can also be caused by a damaged speaker, wiring issues, or a faulty amplifier. You will need to diagnose the problem and replace the damaged parts to fix this issue.

Code B1338 and Its Impact

Code B1338 indicates that the left rear turn signal is shorted low. This can be caused by a damaged turn signal, wiring issues, or a faulty turn signal module. To fix this issue, you will need to diagnose the problem and replace the damaged parts.

If you encounter code B1103, it indicates that the fuel sender is shorted high. This can be caused by a damaged fuel sender or wiring issues. You will need to diagnose the problem and replace the damaged parts to fix this issue.

Finally, code B1153 indicates that the side stand switch is shorted low. This can be caused by a damaged switch or wiring issues. You will need to diagnose the problem and replace the damaged parts to fix this issue.

In conclusion, if you encounter electrical codes on your Harley-Davidson motorcycle, it is important to diagnose the problem and replace the damaged parts to fix the issue. By doing so, you can ensure the safety and reliability of your motorcycle.

Common Harley Error Codes and Solutions

If you own a Harley-Davidson motorcycle, you might have come across various error codes. These codes indicate that the self-diagnostic system of your Harley-Davidson has detected a malfunction. In this section, we will discuss some of the most common error codes and their solutions.

Fuel System Error Codes

One of the most common error codes related to the fuel system is B1343. This error code indicates that the rear left fuel level sensor has failed. To fix this issue, you will need to replace the fuel level sensor.

Other fuel system error codes that you might encounter include B1210, B1211, B1212, and B1213. These codes indicate issues with the fuel injection system. To fix these issues, you will need to take your motorcycle to a Harley-Davidson dealer or a qualified mechanic.

Radio and Control Errors

If you have a Harley-Davidson motorcycle with a radio, you might encounter error codes related to the radio and control system. One of the most common errors is related to the run/stop switch. If the run/stop switch is stuck in the off position, you might encounter error code B2274. To fix this issue, you will need to check the run/stop switch and replace it if necessary.

Another common error is related to the rear volume up button or the rear mode button. If either of these buttons is stuck, you might encounter error codes B2177 or B2178. To fix these issues, you will need to check the buttons and replace them if necessary.

In conclusion, Harley-Davidson error codes can be frustrating, but they can be fixed with the right knowledge and tools. If you encounter an error code, refer to your owner’s manual or take your motorcycle to a Harley-Davidson dealer or a qualified mechanic.

Preventive Measures and Maintenance Tips

Regular Check-Ups

Regular check-ups are essential to ensure that your Harley Davidson motorcycle is functioning properly. It is recommended to have your bike checked by a professional mechanic at least once a year. During these check-ups, the mechanic will inspect all the critical components of your motorcycle, including the throttle position sensor (TPS).

The TPS is a critical component of the fuel injection system, and any issues with it can lead to a range of problems, from rough idling and stalling to poor fuel economy. Therefore, it is important to have your TPS checked regularly to ensure it is functioning correctly.

Upkeep of Electrical Components

Electrical components are an essential part of your Harley Davidson motorcycle. Regular maintenance of these components is necessary to ensure that they are functioning correctly. The battery voltage should be checked regularly to ensure it is at least 12.5 volts. A low battery voltage can cause BCM problems, which can lead to various issues.

The connections to the BCM should be checked regularly to ensure they are clean and tight. If the connections are dirty or loose, they can cause problems with the BCM. The fuses for the BCM should also be checked regularly to ensure they are not blown.

Historic

Harley Davidson motorcycles have a rich history, and as an owner, it is important to understand this history. By knowing the history of your motorcycle, you can appreciate it more and take better care of it. You can also learn about the different models and their unique features.

Maintenance

Regular maintenance is essential to ensure that your Harley Davidson motorcycle is functioning correctly. By following the manufacturer’s recommended maintenance schedule, you can ensure that your motorcycle is in top condition. Regular maintenance includes oil changes, tire rotations, and brake inspections.

Injectors

The fuel injectors in your Harley Davidson motorcycle are critical components of the fuel injection system. They are responsible for delivering fuel to the engine, and any issues with them can lead to a range of problems. Regular maintenance of the injectors is necessary to ensure they are functioning correctly. The injectors should be checked regularly to ensure they are clean and free of debris. If the injectors are dirty or clogged, they can cause problems with the fuel injection system.

In conclusion, regular check-ups and maintenance of your Harley Davidson motorcycle are essential to ensure it is functioning correctly. By following the manufacturer’s recommended maintenance schedule and taking care of the critical components, such as the TPS and injectors, you can avoid costly repairs and ensure that your motorcycle is in top condition.

Advanced Diagnostics and Repair

If you have determined that the B1343 code on your Harley-Davidson is related to a malfunctioning rear left speaker, there are a few advanced diagnostics and repair steps that you can take to address the issue.

When to Consult a Professional

While some basic troubleshooting steps can be taken to diagnose the issue, it may be necessary to consult a professional if you are not comfortable performing more advanced diagnostics or repairs yourself. A professional technician can use specialized diagnostic tools to pinpoint the exact cause of the issue and recommend the best course of action for repairing it.

Upgrading Faulty Components

If the issue is related to a faulty component, such as the rear left speaker itself or a related component like the radio or amplifier, it may be necessary to upgrade the faulty component to ensure that the issue does not recur in the future. Upgrading to higher-quality components can also help to improve the overall sound quality of your Harley-Davidson.

When upgrading components, it is important to ensure that they are compatible with your specific Harley-Davidson model and that they are installed correctly. You may also want to consider upgrading other related components, such as the wiring harness or the battery, to ensure that your Harley-Davidson is operating at peak performance.

Overall, by taking a proactive approach to advanced diagnostics and repair, you can ensure that your Harley-Davidson is operating at its best and that you are able to enjoy your ride to the fullest.

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