Harley Code B1304: Troubleshooting Tips for Harley-Davidson Riders

If you own a Harley-Davidson motorcycle and are experiencing issues with the faceplate navigation button, you may have encountered trouble code B1304. This code indicates that the button is stuck and not functioning properly. Fortunately, there are steps you can take to diagnose and fix the issue.

To begin, you can read the diagnostic trouble codes on your Harley-Davidson without the need for a diagnostic tool. You can do this by using the trip reset button. Once you have identified the B1304 code, you can move on to troubleshooting the issue. One possible solution is to inspect the faceplate navigation button and look for any signs of damage or debris that may be causing it to stick.

If the button is damaged or dirty, you may be able to clean it or replace it to resolve the issue. If the button appears to be in good condition, there may be an issue with the wiring or connections. In this case, you may need to consult a professional mechanic or Harley-Davidson dealership for further assistance.

Understanding Harley Code B1304

If you’re seeing the Harley code B1304 on your motorcycle, it means that the faceplate navigation button is stuck. This can be a frustrating issue to deal with, but fortunately, there are some steps you can take to address it.

First, it’s important to note that the B1304 code is related to the LHCM, or the Left Hand Control Module. This module is responsible for controlling various functions on the left side of the handlebars, including the turn signals, horn, and cruise control.

To diagnose the issue, you’ll need to enter the diagnostic mode on your Harley. Once you’ve done that, you can check the LHCM for any internal errors that may be causing the problem.

If you do find an internal error, you may need to replace the LHCM. However, before doing so, it’s a good idea to check the wiring and connections to make sure there aren’t any loose or damaged wires that could be causing the issue.

Overall, while the B1304 code can be frustrating to deal with, it’s usually a relatively straightforward issue to diagnose and fix. By following the steps outlined above, you should be able to get your motorcycle back up and running smoothly in no time.

Troubleshooting and Diagnostics

If you are experiencing issues with your Harley-Davidson motorcycle and have received the B1304 diagnostic trouble code (DTC), it is important to take the necessary steps to diagnose and resolve the problem. In this section, we will go over some of the key steps involved in troubleshooting and diagnosing this issue.

Diagnostic Trouble Codes (DTC)

The first step in diagnosing any issue with your Harley-Davidson motorcycle is to retrieve the relevant diagnostic trouble codes (DTCs). In the case of the B1304 DTC, this code indicates that the faceplate navigation button is stuck. You can retrieve this code using a diagnostic scan tool or by using the trip reset button on your motorcycle.

Ignition and Battery Checks

Before proceeding with any further troubleshooting, it is important to check the ignition and battery of your motorcycle. Make sure that your battery is fully charged and that your ignition switch is in the “on” position. If your battery is low or your ignition switch is off, you may experience issues with your LHCM, which can cause the B1304 DTC.

Left Hand Control Module (LHCM) Inspection

Once you have verified that your battery and ignition are functioning properly, the next step is to inspect your LHCM. The LHCM is responsible for controlling the various functions of your motorcycle, including the faceplate navigation button. Check for any visible damage or wear on your LHCM, and make sure that all connections are secure.

If you have checked your battery, ignition, and LHCM and are still experiencing issues with the faceplate navigation button, you may need to replace the LHCM or seek further assistance from a professional mechanic.

Remember, if you are unsure about any step in the troubleshooting process, it is always best to seek help from a professional mechanic or Harley-Davidson dealer. Taking the necessary steps to diagnose and resolve issues with your motorcycle can help ensure that you enjoy a safe and trouble-free ride.

Electrical System Fundamentals

When it comes to understanding the B1304 code on your Harley-Davidson, it’s important to have a basic understanding of the electrical system. In this section, we’ll cover some fundamental concepts that will help you better understand how the different components of your Harley’s electrical system work together.

Battery Management

The battery is the heart of your Harley-Davidson’s electrical system. It provides the power necessary to start the engine and run the various electrical components on your bike. Proper battery management is essential to the longevity of your battery and the overall health of your electrical system.

One of the most important things you can do to manage your battery is to keep it properly charged. A fully charged battery should read around 12.6 volts. If your battery is consistently reading below 12 volts, it may be time to replace it.

Ignition System Basics

The ignition system is responsible for starting your Harley’s engine and keeping it running. The ignition system consists of several components, including the ignition switch, spark plugs, and the ignition control module.

The ignition switch is the component that allows you to turn your Harley’s engine on and off. When you turn the key, the ignition switch sends a signal to the ignition control module, which then sends a signal to the spark plugs to ignite the fuel in the engine.

Body Control Module (BCM) Functionality

The Body Control Module (BCM) is responsible for controlling many of the electrical components on your Harley-Davidson. The BCM communicates with the Engine Control Unit (ECU) to ensure that all of the electrical systems are working together properly.

One of the most common issues with the BCM is a fault in the communication system between the BCM and the ECU. This can result in a variety of error codes, including the B1304 code.

In summary, understanding the basics of your Harley-Davidson’s electrical system is essential to diagnosing and repairing issues like the B1304 code. By properly managing your battery, understanding the ignition system, and being aware of the functionality of the BCM, you’ll be better equipped to maintain and repair your Harley-Davidson’s electrical system.

Left Hand Control Module (LHCM) Errors

If you are experiencing issues with your Harley Davidson motorcycle, one of the possible error codes that you may encounter is B1304. This code is related to the Left Hand Control Module (LHCM), which is responsible for controlling various functions on your motorcycle.

LHCM Up Button Stuck

One of the LHCM errors that you may encounter is the LHCM Up Button Stuck error. This error occurs when the up button on the LHCM becomes stuck or unresponsive. This can be caused by a variety of factors, including wear and tear, dirt and debris, or a malfunctioning LHCM.

To resolve this issue, you may need to replace the LHCM or have it repaired by a professional mechanic. It is important to address this issue as soon as possible, as a malfunctioning LHCM can affect the safety and performance of your motorcycle.

LHCM Center Button Stuck

Another LHCM error that you may encounter is the LHCM Center Button Stuck error. This error occurs when the center button on the LHCM becomes stuck or unresponsive. Like the LHCM Up Button Stuck error, this can be caused by a variety of factors.

If you encounter the B1304 error code or any other LHCM errors, it is important to have your motorcycle inspected by a professional mechanic. They can diagnose the issue and provide you with the best course of action to resolve the problem.

Harley-Davidson Communication Networks

When it comes to modern Harley-Davidson motorcycles, communication networks play a vital role in the overall functionality of the bike. Two of the most important communication networks on your Harley-Davidson are the CAN Bus System and Security and Starter Systems.

CAN Bus System

The CAN Bus System is a communication network that allows different electronic control modules (ECMs) on your Harley-Davidson to communicate with each other. This system is responsible for transmitting data between different systems such as the engine, transmission, and ABS. The CAN Bus System is designed to reduce the amount of wiring needed on the bike, making it more efficient and easier to maintain.

Security and Starter Systems

The Security and Starter Systems on your Harley-Davidson are also important communication networks. The Security System is designed to prevent unauthorized access to your bike, while the Starter System is responsible for starting the engine. Both of these systems use a security antenna to communicate with the bike’s ECM. If the security antenna is damaged or malfunctioning, it can cause issues with both the Security and Starter Systems.

In some cases, issues with the Security and Starter Systems can result in error codes such as B1304. This code indicates that the faceplate navigation button is stuck. If you encounter this error code, it is important to have your bike diagnosed by a qualified technician to determine the root cause of the issue.

Overall, understanding the communication networks on your Harley-Davidson is essential for maintaining the bike’s functionality. By staying informed and addressing any issues as they arise, you can ensure that your bike continues to perform at its best.

Accessory Control and Output Functions

Harley code B1304 is related to the Accessory Delay Relay Coil Circuit Short To Battery. This code is usually triggered when there is a short circuit in the accessory delay relay coil circuit, which is responsible for providing voltage to the door lock switches, power windows, and roof opening panel (if equipped).

Accessory Outputs

The accessory delay relay remains active for an additional 10 minutes when the ignition switch is in the OFF position or until the driver door is opened. This allows you to continue using the accessory outputs even after turning off the ignition. The accessory outputs include the power windows, door lock switches, and roof opening panel (if equipped).

Control Module Outputs

Harley-Davidson motorcycles come equipped with a Body Control Module (BCM) that controls various functions of the motorcycle. The BCM is responsible for controlling the accessory outputs as well as other outputs such as the fuel pump output, high beam output, low beam output, turn signal output, and running lights output.

The BCM receives input from various sensors and switches on the motorcycle and uses this information to control the various outputs. If the BCM detects a fault in any of the inputs or outputs, it will store a diagnostic trouble code (DTC) in its memory. These DTCs can be read using a diagnostic tool and can help you identify the cause of the problem.

In conclusion, Harley code B1304 is related to the Accessory Delay Relay Coil Circuit Short To Battery. This code can be triggered by a short circuit in the accessory delay relay coil circuit, which is responsible for providing voltage to the door lock switches, power windows, and roof opening panel (if equipped). The BCM is responsible for controlling various functions of the motorcycle, including the accessory outputs and other outputs such as the fuel pump output, high beam output, low beam output, turn signal output, and running lights output. If you encounter any issues with these outputs, it is recommended to check the BCM and its associated wiring for any faults.

Harley-Davidson Hand Controls

If you own a Harley-Davidson motorcycle, you know that the hand controls are an essential part of the bike. The hand controls allow you to operate various functions of the motorcycle, such as the turn signals, rear volume, and rear mode. However, if you are experiencing issues with your hand controls, it can be frustrating and even dangerous. In this section, we will discuss some common issues with Harley-Davidson hand controls and how to troubleshoot them.

Rear Hand Controls Issues

One of the most common issues with Harley-Davidson hand controls is when the rear hand controls are shorted. When this happens, you may experience issues with the rear volume or rear mode. To troubleshoot this issue, you can check the wiring connections and make sure they are secure. If the wiring connections are secure, you may need to replace the hand controls.

Turn Signal Functionality

Another common issue with Harley-Davidson hand controls is when the turn signals are not functioning properly. This can be caused by a variety of issues, such as a faulty turn signal switch or a bad connection. To troubleshoot this issue, you can check the turn signal switch and wiring connections. If the turn signal switch is faulty, you will need to replace it.

In conclusion, Harley-Davidson hand controls are an essential part of the motorcycle and can cause issues if they are not functioning properly. If you are experiencing issues with your hand controls, it is important to troubleshoot the issue and fix it as soon as possible. By following the steps outlined in this section, you can troubleshoot common issues with Harley-Davidson hand controls and get back on the road in no time.

Advanced Diagnostic Strategies

If you’re experiencing the B1304 code on your Harley-Davidson, there are a few advanced diagnostic strategies you can try to identify and resolve the issue. Here are some helpful subsections to guide you through the process:

Reference Voltage Checks

One of the first steps in troubleshooting the B1304 code is to perform reference voltage checks. This will help you determine if there are any issues with the ignition switch or other components that may be causing the problem. Use a multimeter to check the voltage at various points throughout the system, including the battery, ignition switch, and other relevant components. Make sure to consult your Harley-Davidson service manual for specific instructions on how to perform these tests.

Harley-Davidson Service Manual

Your Harley-Davidson service manual is an invaluable resource when it comes to troubleshooting and resolving diagnostic trouble codes like B1304. Make sure to consult your manual for specific instructions on how to diagnose and resolve the issue. The manual will also provide you with a list of common causes for the code, as well as step-by-step instructions for repairing or replacing any faulty components.

By following these advanced diagnostic strategies, you can quickly and effectively diagnose and resolve the B1304 code on your Harley-Davidson. Remember to always consult your service manual and take the necessary safety precautions when working on your bike.