If you own a Harley-Davidson motorcycle, you might have come across a fault code B1305. This code refers to the faceplate power/mute button being stuck. When this happens, the button is either pressed down or stuck in the up position, causing the radio to malfunction.
To fix this issue, you may need to replace the faceplate or the entire radio unit, depending on the severity of the problem. However, before taking any action, it’s important to diagnose the problem correctly. You can use the diagnostic trouble codes (DTCs) to identify the issue.
Fortunately, checking the DTC codes on a Harley-Davidson is relatively easy. You can use the trip reset button to read the codes without using a diagnostic tool. To do this, make sure your battery is charged and the terminals are secured. Then turn the ignition switch to OFF and the Run/Stop switch to the Run position. Press and hold the trip reset button until the speedometer needle sweeps and the DTCs appear.
Understanding Harley Diagnostic Codes
If you own a Harley Davidson motorcycle, it is essential to understand the diagnostic codes that your bike may display. These codes provide valuable information about the health of your bike’s systems and can help you identify potential problems before they become severe. In this section, we will discuss the basics of Harley diagnostic codes, including DTC and Harley’s system, and common error codes.
DTC and Harley’s System
Harley Davidson uses a diagnostic trouble code (DTC) system that is similar to the OBD-II system used in cars. The DTC system is a standardized method to identify and diagnose issues in the electronic control modules (ECMs) of your bike. Harley’s system is designed to monitor and control various systems, including the engine, transmission, brakes, and suspension.
Common Harley Error Codes
Here are some of the most common Harley error codes you may encounter:
- B1103: Front turn signal short to ground
- B1153: Sidecar BAS short to ground
- B1200: Fuel sender open/high
- B1210: Injector control pressure sensor (ICP) open/low
- B1211: ICP sensor open/high
- B1212: TPS1 range low
- B1213: TPS1 range high
- B1300: Ignition switch run/acc circuit malfunction
- B1301: Ignition switch sense circuit malfunction
- B1302: Battery voltage low
- B1303: Battery voltage high
- B1304: Starter output high
- B1305: Starter output low
- B1306: Ignition switch accessory circuit malfunction
- B1309: EFI internal fault
- B1310: EFI out of range error
- B1312: EFI high resistance
- B1313: EFI low resistance
- B1314: EFI fuel pump malfunction
If your Harley displays any of these error codes, it is essential to address the issue immediately. Ignoring these codes can lead to severe problems and costly repairs in the future.
In conclusion, understanding Harley diagnostic codes is crucial to maintaining the health of your bike. By familiarizing yourself with these codes and their meanings, you can identify and resolve issues before they become severe.
Decoding the B1305 Code
If you own a Harley-Davidson motorcycle, you might have encountered the B1305 code. This code is related to the accessory delay relay, which provides voltage to the door lock switches, power windows, and roof opening panel (if equipped). The B1305 code indicates that there is a short circuit in the coil circuit of the accessory delay relay, causing it to remain active for an additional 10 minutes when the ignition switch is in the OFF position or until the driver door is opened.
One of the symptoms of the B1305 code is that the rear hand controls may be shorted high or low. This means that the controls may not function properly, or they may not function at all. Another symptom is that the rear volume up button may be stuck, causing the volume to increase uncontrollably.
To diagnose the B1305 code, you will need a diagnostic tool that is compatible with Harley-Davidson motorcycles. You can also read the DTC codes on a Harley-Davidson without a diagnostic tool by using the trip reset button. However, it is recommended that you use a diagnostic tool for accurate and reliable results.
If you have encountered the B1305 code, it is important to have it diagnosed and repaired as soon as possible. Ignoring the code can lead to further damage to your motorcycle and can also be a safety hazard.
In summary, the B1305 code is related to the accessory delay relay and can cause issues with the rear hand controls and rear volume up button. To diagnose and repair the code, you will need a diagnostic tool that is compatible with Harley-Davidson motorcycles. It is important to have the code diagnosed and repaired as soon as possible to prevent further damage and ensure the safety of your motorcycle.
Electrical Component Functions
When it comes to the B1305 code in your Harley Davidson, understanding the functions of the electrical components is crucial. Here is a breakdown of the main functions of each component:
Ignition and Switches
The ignition switch is a key component that controls the power supply to the motorcycle’s electrical system. It also controls the starter output, which is responsible for starting the engine. The security antenna is another important component that prevents theft by recognizing the key fob and allowing the bike to start. The run/stop switch controls the power to the engine, while the neutral switch ensures that the motorcycle is in neutral before it can be started. The rear brake switch is responsible for turning off the brake light when the brake is released.
Lighting and Indicators
The lighting and indicators are responsible for providing visibility and safety while riding. The fork lock is responsible for locking the front fork and preventing the bike from moving. The high beam and low beam outputs control the headlights, while the turn signal output controls the turn signals. The brake lamp output is responsible for turning on the brake light when the brake is applied. The running lights output controls the running lights, which are always on while the bike is running.
Audio and Communication
The audio and communication components are responsible for providing entertainment and communication while riding. The speaker is responsible for playing music and other audio. The radio controls the radio and allows you to change stations and adjust the volume. The GPS antenna is responsible for providing GPS navigation. The E4 output controls the emergency flashers, while the rear volume, rear mode, and rear PTT controls the communication system.
Understanding the functions of these components can help you diagnose and fix the B1305 code in your Harley Davidson. If you are unsure about any of these components, it is best to consult a professional mechanic or refer to your motorcycle’s owner’s manual.
Troubleshooting Electrical Issues
When it comes to Harley Davidson, electrical issues can be a real pain. Whether you’re dealing with starting problems or radio faults, it’s important to take a systematic approach to troubleshooting. In this section, we’ll cover some common electrical issues and show you how to diagnose and address them.
Diagnosing Starting Problems
If your Harley won’t start, the first thing you should check is the ignition system. Make sure your battery is fully charged and that the starter output is working properly. If you’re having trouble with your security antenna, it could be preventing your bike from starting. Check the connections and make sure they’re clean and tight.
If you’re still having trouble starting your Harley, you may need to dig deeper. Look for any diagnostic trouble codes (DTCs) that may be present. Codes like B1338, B1342, B1346, and B1350 can all indicate issues with the ignition system. If you’re not sure how to read DTCs on your Harley, consult your owner’s manual or take your bike to a qualified mechanic.
Addressing Radio and Audio Faults
Harley Davidson bikes are known for their great sound systems, but sometimes those systems can malfunction. If you’re having trouble with your radio, the first thing you should check is the voltage. Low radio voltage can cause all sorts of problems, including audio dropouts and poor sound quality. High radio voltage, on the other hand, can cause your radio to overheat and shut down.
If your radio voltage is within normal limits, you may have an IM internal fault or another issue with your audio system. Again, look for any DTCs that may be present. Codes like B1301 can indicate problems with the radio or audio system.
In summary, electrical issues can be frustrating, but they don’t have to be a dealbreaker. By taking a systematic approach to troubleshooting, you can diagnose and address common issues like starting problems and radio faults. If you’re not sure how to proceed, consult your owner’s manual or take your bike to a qualified mechanic.
Harley’s Control Modules
Harley-Davidson motorcycles use a variety of control modules to manage different systems and functions. These modules are responsible for interpreting signals from various sensors and switches, and then sending commands to other components in order to control things like the engine, lights, and instruments.
Body Control Module (BCM)
The Body Control Module (BCM) is one of the most important control modules on a Harley-Davidson motorcycle. It is responsible for managing a wide range of functions, including the lights, horn, turn signals, and security system. The BCM is also responsible for storing diagnostic trouble codes (DTCs) that can help you identify problems with your bike.
Left Hand Control Module (LHCM)
The Left Hand Control Module (LHCM) is another important control module on a Harley-Davidson motorcycle. It is responsible for managing functions like the turn signals, high beam, and horn. The LHCM can also store diagnostic trouble codes (DTCs) that can help you diagnose problems with your bike.
Right Hand Control Module (RHCM)
The Right Hand Control Module (RHCM) is similar to the LHCM, but it is responsible for managing different functions. The RHCM is responsible for managing functions like the starter, kill switch, and cruise control. Like the other control modules, the RHCM can store diagnostic trouble codes (DTCs) that can help you diagnose problems with your bike.
LHCM Internal Error
If your LHCM is experiencing an internal error, it may not function properly. This can cause problems with your turn signals, high beam, and horn. If you suspect that your LHCM is experiencing an internal error, you should consult your owner’s manual for instructions on how to diagnose and fix the problem.
RHCM Internal Error
If your RHCM is experiencing an internal error, it may not function properly. This can cause problems with your starter, kill switch, and cruise control. If you suspect that your RHCM is experiencing an internal error, you should consult your owner’s manual for instructions on how to diagnose and fix the problem.
LHCM Police Siren Power
If you have a police model Harley-Davidson motorcycle, your LHCM may be responsible for controlling the power to the police siren. If you are experiencing problems with your siren, you should check your LHCM to make sure that it is functioning properly. If you suspect that your LHCM is not functioning properly, you should consult your owner’s manual for instructions on how to diagnose and fix the problem.
Fuel System Diagnostics
If you are experiencing issues with your Harley-Davidson’s fuel system, there are a few things you can check to help diagnose the problem. One of the most common fuel system diagnostic codes is B1305, which is related to the faceplate power/mute button being stuck. However, there are other fuel system-related codes that may be relevant to your situation.
Fuel Level and Signal Issues
The fuel level sender is responsible for measuring the amount of fuel in your Harley-Davidson’s gas tank. If the sender is shorted low or open, it can cause the B1210 code to appear. If the sender is shorted high, the B1211 code may appear instead. In both cases, the fuel level measurement will likely be inaccurate.
Another fuel system diagnostic code to be aware of is B1212, which is related to a low fuel signal. This code may appear if there is an issue with the fuel level sender or if there is an issue with the wiring that connects the sender to the rest of the fuel system. On the other hand, the B1213 code may appear if there is a high fuel signal.
If you are experiencing fuel system issues, it is important to address them quickly to prevent further damage to your motorcycle. In some cases, the issue may be as simple as a loose wire or a faulty fuel level sender. However, more serious issues may require the assistance of a trained Harley-Davidson technician.
Overall, it is important to keep your fuel system in good working order to ensure that your motorcycle runs smoothly and efficiently. By staying aware of common fuel system diagnostic codes and taking action when necessary, you can help prevent more serious issues from occurring down the road.
Maintaining Your Harley’s Battery
Your Harley’s battery is a vital component of your motorcycle, and it’s crucial to keep it in good condition to ensure optimal performance. Here are some tips to help you maintain your Harley’s battery:
1. Check the Battery Regularly
Make sure to check your Harley’s battery regularly to ensure it’s in good condition. Check for signs of corrosion or damage to the terminals or cables. If you notice any issues, it’s best to have a professional mechanic take a look.
2. Charge the Battery
If you don’t ride your Harley regularly, it’s important to keep the battery charged to prevent it from dying. You can use a battery tender or charger to keep the battery charged when you’re not riding.
3. Replace the Battery When Necessary
If your Harley’s battery is old or damaged, it’s important to replace it as soon as possible. A dead or damaged battery can cause a range of issues, including difficulty starting your motorcycle.
4. Store Your Harley Properly
If you plan to store your Harley for an extended period, it’s important to take steps to protect the battery. Make sure to disconnect the battery and store it in a cool, dry place. You can also use a battery tender to keep the battery charged while it’s in storage.
By following these tips, you can help ensure your Harley’s battery stays in good condition, providing reliable power for your motorcycle.
Harley’s Security Features
Harley-Davidson motorcycles come with a variety of security features to protect your bike from theft. One of the most important features is the security antenna, which is used to detect the presence of a key fob. If the key fob is not present, the security system will prevent the bike from starting.
Security Antenna and Outputs
The security antenna is located on the bike’s frame and is connected to the body control module (BCM). The BCM is responsible for controlling the security system and communicating with the other modules on the bike. When the key fob is within range of the security antenna, the antenna sends a signal to the BCM. The BCM then sends a signal to the instrument cluster, which displays a message on the odometer indicating that the security system is disarmed.
If the security system detects that the key fob is not present, the security light on the instrument cluster will flash and the bike will not start. In addition to preventing the bike from starting, the security system also has other outputs that can be used to deter theft. For example, the security system can activate the bike’s horn and lights if someone tries to start the bike without the key fob.
The security system also has a built-in backup battery that will keep the system armed even if the main battery is disconnected. This ensures that the security system will still work even if the thief disconnects the main battery in an attempt to disable the security system.
In addition to the security antenna, the security system also uses a BAS input to detect when the bike is in gear. If the bike is in gear and the security system detects that the key fob is not present, the security light on the instrument cluster will flash and the bike will not start.
Overall, Harley-Davidson’s security features are designed to protect your bike from theft and provide added peace of mind. By using a combination of the security antenna, BCM, and other outputs, the security system is able to detect when the key fob is not present and prevent the bike from starting.