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Harley Code B1303: Understanding and Troubleshooting Tips

by

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 come across the B1303 code at some point. This code refers to the faceplate favorite button being stuck, which can be a frustrating issue to deal with. When this code appears, it means that the motorcycle’s onboard diagnostic system (OBD) has detected a malfunction in the faceplate button.

The faceplate favorite button is an essential feature of the Harley-Davidson motorcycle’s infotainment system. It allows you to save your favorite radio stations and audio sources for quick access while riding. However, if the button gets stuck, it can cause issues with the system’s functionality. This is where the B1303 code comes in, indicating that the button is stuck and needs to be fixed.

Understanding Harley Diagnostic Codes

If you own a Harley Davidson motorcycle, it’s important to understand the diagnostic codes that your bike can produce. These codes are generated by the onboard diagnostic system and can provide you with valuable information about the condition of your motorcycle. In this section, we’ll cover the role of the BCM and ECM in the diagnostic system, as well as how to decipher code B1303.

The Role of the BCM and ECM

The BCM (Body Control Module) and ECM (Engine Control Module) are two critical components of the Harley Davidson diagnostic system. The BCM is responsible for controlling various electrical systems on the motorcycle, including the radio, speedometer, and instruments. The ECM, on the other hand, is responsible for controlling the engine and fuel injection system.

When your motorcycle detects a problem, it will generate a diagnostic trouble code (DTC) that is stored in the BCM or ECM. These codes can then be read using a diagnostic tool, allowing you to pinpoint the issue and take appropriate action.

Deciphering Code B1303

Code B1303 is a common diagnostic trouble code that can be generated by your Harley Davidson motorcycle. This code indicates a problem with the BCM, specifically a malfunction in the power supply to the module.

If you encounter this code, there are a few steps you can take to diagnose and fix the issue. First, check the fuses and wiring for the BCM to ensure that there are no loose connections or damaged components. If everything appears to be in order, you may need to replace the BCM itself.

It’s important to note that code B1303 is just one of many diagnostic trouble codes that your Harley Davidson motorcycle can generate. By understanding the role of the BCM and ECM in the diagnostic system, as well as how to decipher specific codes like B1303, you can keep your motorcycle running smoothly and address any issues as soon as they arise.

Electrical System Fundamentals

Battery and Power Management

The electrical system of your Harley-Davidson motorcycle is powered by a battery that provides the necessary energy to start the engine and operate the various electrical components of the bike. The battery is charged by the motorcycle’s alternator while the engine is running. It’s important to ensure that the battery is fully charged and in good condition to prevent issues with starting the motorcycle and to ensure proper operation of the electrical system.

To maintain the battery’s charge, the motorcycle’s power management system regulates the amount of power that is drawn from the battery and ensures that the alternator is charging the battery when necessary. The power management system also controls the operation of various electrical components, such as the lights and accessories, to prevent the battery from being drained excessively.

CAN Bus System

The Harley-Davidson electrical system uses a Controller Area Network (CAN) Bus system to communicate between the various electrical components of the motorcycle. The CAN Bus system allows for faster and more efficient communication between the components and reduces the amount of wiring required in the motorcycle.

The CAN Bus system also allows for more advanced features, such as the ability to diagnose and troubleshoot issues with the electrical system using a diagnostic tool. This can help identify issues with the battery, ignition system, or other electrical components, and can help prevent more serious issues from occurring.

Overall, understanding the fundamentals of the electrical system of your Harley-Davidson motorcycle is important for ensuring proper operation and preventing issues with starting and operating the bike. By maintaining the battery and power management system, and understanding the CAN Bus system, you can ensure that your motorcycle is always ready to ride.

Troubleshooting Common Harley Codes

If you own a Harley-Davidson motorcycle, you may encounter a range of trouble codes that can indicate different issues with your bike. In this section, we will discuss some common Harley codes and how to troubleshoot them.

Issues Related to B1303

One of the most common trouble codes you may encounter is B1303, which indicates that the faceplate favorite button is stuck. This can be a frustrating issue, but fortunately, it is relatively easy to fix.

To resolve this issue, you should first try to clean the faceplate and the button. Use a soft cloth and a mild cleaning solution to wipe away any dirt or debris that may be causing the button to stick. If this does not work, you may need to replace the button or the faceplate altogether.

It is also worth noting that B1303 may be related to other trouble codes, such as B1103, B1153, B1200, and B1306. These codes can indicate issues with other parts of your bike, such as the radio or the instruments. If you are experiencing multiple trouble codes, it may be best to take your bike to a professional mechanic for diagnosis and repair.

Resolving Other Trouble Codes

In addition to B1303, there are many other trouble codes that you may encounter with your Harley-Davidson motorcycle. Here are some common codes and how to troubleshoot them:

  • P Codes: These codes indicate issues with the ECM (engine control module) and can be caused by a range of issues, such as faulty sensors or wiring problems. To troubleshoot P codes, you may need to perform a range of diagnostic tests or replace parts as needed.

  • C Codes: These codes indicate issues with the ABS (anti-lock brake system) and can be caused by problems with the sensors or the hydraulic system. To troubleshoot C codes, you may need to inspect the brake system and replace any faulty components.

  • U Codes: These codes indicate issues with the communication between different modules in your bike’s onboard diagnostic system. To troubleshoot U codes, you may need to perform diagnostic tests or replace faulty modules.

By understanding the common trouble codes that can affect your Harley-Davidson motorcycle, you can troubleshoot issues as they arise and keep your bike running smoothly. Remember to always follow proper safety procedures when working on your bike and consult a professional mechanic if you are unsure about any repairs.

Switches and Controls

Harley-Davidson motorcycles are equipped with various switches and controls that allow you to operate the bike efficiently. However, if any of these switches or controls malfunction, it can cause various issues, including error codes like B1303. In this section, we will discuss some of the switches and controls that can trigger B1303 and how to troubleshoot them.

Run/Stop Switch and Ignition Switch

The Run/Stop switch and Ignition switch are two essential switches that you need to operate your Harley-Davidson motorcycle. The Run/Stop switch is located on the right-hand side of the handlebar, and it allows you to start and stop the engine. The Ignition switch is located on the left-hand side of the handlebar, and it allows you to turn the electrical system on and off.

If the Run/Stop switch or Ignition switch malfunctions, it can cause various issues, including B1303. To troubleshoot these switches, you need to check if they are functioning correctly. You can do this by checking the electrical connections and testing the switches using a multimeter. If you find any issues, you may need to replace the switches.

Hand Control Module Errors

The Hand Control Module (HCM) is an essential component of your Harley-Davidson motorcycle, and it controls various functions, including the turn signals, horn, and high beam. The HCM has two parts, the Left Hand Control Module (LHCM), and the Right Hand Control Module (RHCM).

If the LHCM or RHCM malfunctions, it can trigger various error codes, including B1303. LHCM internal error and RHCM internal error are two common error codes that can occur due to a malfunctioning HCM.

To troubleshoot HCM errors, you need to check if the LHCM and RHCM are functioning correctly. You can do this by checking the electrical connections and testing the switches using a multimeter. If you find any issues, you may need to replace the LHCM or RHCM.

In conclusion, B1303 is an error code that can occur due to various reasons, including malfunctioning switches and controls. By troubleshooting these switches and controls, you can fix the issue and get your Harley-Davidson motorcycle back on the road.

Radio and Audio System Issues

If you’re experiencing issues with your Harley’s radio and audio system, you’re not alone. These systems can be prone to problems, especially as they age. Here are a few things to keep in mind when troubleshooting radio and audio system issues.

Handling Radio Error Codes

One of the most common issues with Harley radios is the appearance of error codes. One such code is B1303, which indicates that the faceplate favorite button is stuck. If you encounter this error code, you’ll need to take your bike to a Harley dealer to have the radio repaired. Attempting to fix the issue yourself could cause further damage to the radio.

Another error code that you may encounter is B1300, which indicates that the radio voltage is high. This can be caused by a number of factors, including a faulty voltage regulator or a short circuit in the wiring. If you encounter this error code, you should take your bike to a Harley dealer to have the issue diagnosed and repaired.

Troubleshooting Control Buttons

Another common issue with Harley radios is problems with the control buttons. If you’re having trouble with the buttons on your radio, there are a few things you can try to troubleshoot the issue. First, make sure that the buttons are clean and free of debris. If the buttons are dirty, they may not function properly.

If cleaning the buttons doesn’t solve the issue, you may need to have the radio repaired. This can be a costly process, so it’s important to take good care of your radio to avoid issues in the first place. Make sure to keep the radio clean and dry, and avoid exposing it to extreme temperatures or moisture.

In conclusion, Harley radio and audio systems can be prone to issues, but with a little troubleshooting and maintenance, you can keep your system running smoothly. If you encounter any error codes or problems with your radio, don’t hesitate to take your bike to a Harley dealer for repairs.

Signal and Sensor Malfunctions

If you are experiencing issues with your Harley Davidson BCM, such as error code B1303, it could be due to a malfunctioning signal or sensor. In this section, we will discuss the common signal and sensor malfunctions that can lead to BCM issues.

Fuel and Temperature Sensors

The fuel and temperature sensors are responsible for providing accurate readings to the BCM. If these sensors malfunction, it can lead to issues with the fuel system, causing error codes like B1303 to appear. If you notice that your fuel gauge is not reading correctly or your engine temperature is fluctuating, it could be a sign that these sensors are malfunctioning.

To diagnose these issues, you can use a diagnostic tool to check the fuel and temperature sensor readings. If the readings are outside of the normal range, it may be time to replace these sensors.

Vehicle Speed Sensor (VSS)

The Vehicle Speed Sensor (VSS) is responsible for providing the BCM with accurate speed readings. If this sensor malfunctions, it can cause issues with the transmission and the speedometer. This can lead to error codes like B1303 appearing on your BCM.

To diagnose VSS issues, you can use a diagnostic tool to check the sensor readings. If the readings are outside of the normal range, it may be time to replace the VSS.

In summary, malfunctioning signals and sensors can cause issues with your Harley Davidson BCM. If you are experiencing error codes like B1303, it could be due to a malfunctioning fuel or temperature sensor or a faulty VSS. By diagnosing and replacing these sensors, you can get your BCM back to working correctly.

Security and Safety Features

Harley-Davidson motorcycles are equipped with advanced security and safety features to ensure a safe and enjoyable ride. These features include security system diagnostics, brake and lighting concerns, and more. In this section, we will discuss some of the key security and safety features of Harley-Davidson motorcycles.

Security System Diagnostics

Harley-Davidson motorcycles come equipped with a smart security system that provides advanced protection against theft. The security system is designed to prevent unauthorized access to the motorcycle and can be easily activated and deactivated using a personal security code.

One of the common diagnostic trouble codes (DTC) that you may encounter is B1303, which indicates that the faceplate favorite button is stuck. This can cause the security system to malfunction and prevent the motorcycle from starting. To fix this issue, you will need to have the faceplate checked and replaced if necessary.

Another common DTC is B1142, which indicates an internal fault in the smart security system. This can cause the security system to malfunction and prevent the motorcycle from starting. To fix this issue, you will need to have the smart security system checked and repaired if necessary.

Brake and Lighting Concerns

Harley-Davidson motorcycles are equipped with advanced brake and lighting systems that ensure a safe and enjoyable ride. The brake system is designed to provide maximum stopping power and can be easily activated using the brake lever or pedal.

One of the common brake and lighting concerns that you may encounter is an open brake lamp output. This can cause the brake lamp to malfunction and prevent the motorcycle from stopping properly. To fix this issue, you will need to have the brake lamp checked and replaced if necessary.

Another common brake and lighting concern is an open security antenna output. This can cause the security system to malfunction and prevent the motorcycle from starting. To fix this issue, you will need to have the security antenna checked and repaired if necessary.

In conclusion, Harley-Davidson motorcycles are equipped with advanced security and safety features that ensure a safe and enjoyable ride. By understanding these features and how to diagnose and fix common issues, you can ensure that your motorcycle is always in top condition and ready for the road.

Maintaining Your Harley

To keep your Harley running smoothly, it’s important to perform routine checks and service. This will help prevent issues from arising and ensure that your bike is always in top condition.

Routine Checks and Service

Regular maintenance is key to keeping your Harley in good shape. Here are some routine checks and service tasks you should perform regularly:

  • Check your oil level and change it as needed.
  • Inspect your tires for wear and tear, and replace them if necessary.
  • Check your brake pads and replace them if they’re worn down.
  • Check your battery and make sure it’s holding a charge.
  • Clean your air filter and replace it if it’s dirty.

By performing these routine checks and services, you can catch any issues early on and prevent them from turning into bigger problems down the road.

Updating Software and Recalls

Another important aspect of maintaining your Harley is keeping your software up to date and addressing any recalls that may be issued. This can help improve the performance and safety of your bike.

To update your software, you can take your Harley to a dealer or perform the update yourself if you have the necessary tools and knowledge. You can also check for any recalls that may have been issued for your bike and have them addressed promptly.

By taking care of routine maintenance, updating your software, and addressing any recalls, you can keep your Harley running smoothly and enjoy many years of riding.

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