The B1351 code is a common issue that occurs in vehicles with an Instrument Cluster and Smart Junction Box. It indicates a short circuit to the battery in the ignition key-in circuit, which can lead to warning lights and potential disruptions in the vehicle's operation.
The symptoms of this code may include illuminated warning lights on the dashboard and possible malfunctions in the vehicle's functionality.
The causes of the B1351 code can vary, but they often include damaged wiring, faulty ignition switches, or issues with the smart junction box.
To fix this problem, it is important to first identify and repair any damaged wiring or components. If the issue persists, a professional diagnostic scan tool may be needed to further investigate the problem and make the necessary repairs.
It is crucial to address the B1351 code promptly to ensure the safety and proper functioning of the vehicle.
What does it mean
The B1351 code indicates a short circuit to the battery in the ignition key-in circuit. It does not mean there is a problem with the ignition switch itself.
Regular maintenance and inspection of the key-in switch, harness, and related components can help prevent short circuits and electrical issues triggering this code.
what are the symptoms
The B1351 code may cause the Engine Light to turn on, along with other related warning lights. You may also hear warning chimes like the key-in-ignition or headlamps on chime.
The code can affect the vehicle in the following ways:
- The engine may have trouble starting or may not start at all.
- The vehicle may lose power or stall intermittently.
- The key-in-ignition warning chime may keep sounding, even without the key in the ignition.
These symptoms indicate a problem with the key-in-ignition circuit. It is important not to ignore them.
If you experience any of these issues, it is recommended to have your vehicle checked and repaired by a professional technician to avoid further damage or safety concerns.
What are the causes
Possible causes of the B1351 code include:
- A faulty Ignition Key-In Switch
- A problem with the Ignition Key-In Switch wiring
- A poor electrical connection in the Ignition Key-In Switch circuit
- A faulty Smart Junction Box
- Other potential causes that are not listed
It is important to correctly identify the cause of the B1351 code to ensure proper repairs are carried out. Making mistakes during diagnosis can lead to unnecessary repairs and waste time.
To avoid these mistakes, technicians should:
- Carefully inspect the Ignition Key-In Switch
- Check for any issues with the wiring
- Test the electrical connection in the circuit
Additionally, it is necessary to check the Smart Junction Box for any faults.
Following the correct diagnostic procedures will help identify the exact cause of the B1351 code and ensure effective repairs are performed.
What Tools are Needed to diagnose
To diagnose the B1351 code accurately, technicians need specialized diagnostic tools. These tools are crucial for identifying the cause of the code and determining the required repairs. Here are the tools needed for diagnosing the B1351 code:
- OBD-II Scanner: This tool retrieves the B1351 code from the vehicle's onboard computer system. It provides technicians with valuable information about the specific issue and helps them troubleshoot effectively.
- Multimeter: A multimeter measures voltage, resistance, and continuity in the ignition key-in switch circuit. Technicians use it to identify electrical faults or any open/shorted circuits that might be causing the B1351 code.
- Wiring Diagrams: These diagrams offer a visual representation of the ignition key-in switch circuit. They assist technicians in locating connectors, wires, and components, making the troubleshooting process easier.
How to fix Step by Step
Step 1: Thoroughly inspect the ignition key-in switch circuit for any potential issues. This includes checking the ignition key-in switch itself, as well as the associated wiring harness and connectors. Look for any signs of damage, such as frayed wires or corroded connectors. Perform a visual inspection to ensure that all components are in good condition.
Step 2: Avoid common diagnostic mistakes when diagnosing the B1351 code. These mistakes include misdiagnosing the issue as a faulty instrument cluster or smart junction box, failing to properly inspect the wiring harness and connectors, and overlooking other potential causes.
Step 3: Do not ignore the B1351 code and continue driving with it. Ignoring the code can lead to further electrical issues and potentially cause damage to other components. It is best to address the issue promptly.
Step 4: Perform the necessary repairs or replacements to resolve the B1351 code. This may involve fixing any issues found during the inspection, replacing damaged wiring or connectors, or addressing other potential causes.
What are the Common Diagnosis Mistakes
One common mistake in diagnosing the B1351 code is not thoroughly inspecting the ignition key-in switch circuit. This can result in incorrect diagnosis and unnecessary repairs.
To prevent these errors, here are some troubleshooting tips:
- Make sure the ignition key-in switch is working properly and not faulty or damaged.
- Check the wiring harness and connectors associated with the ignition key-in switch for any signs of open circuits, short circuits, or poor electrical connections.
- Do a visual inspection to look for any damaged components or broken, bent, pushed out, or corroded connector pins.
What is the Repair Cost
The repair cost for the B1351 code can vary based on factors such as location, vehicle make and model, and engine type. On average, labor costs range from $75 to $150 per hour, with an estimated 1.0 hour of labor required.
Prices for replacing the Smart Junction Box (SJB) will depend on the part cost and labor involved. Consult a professional repair shop for an accurate estimate.
Can I drive safely with this code?
Driving safely with the B1351 code is not recommended due to the potential for malfunctioning warning systems. This code indicates a short circuit to the battery in the key-in-ignition circuit, which can affect the key-in-ignition warning chime and headlamp warning chime.
It is best to have this code diagnosed and repaired by a professional before driving to avoid any issues or malfunctions.
Conclusion
In conclusion, the B1351 code indicates a short circuit to the battery in the ignition key-in circuit.
This can cause various warning lights to illuminate, affecting the proper functioning of the vehicle.
It is important to promptly address this code to ensure safe driving and prevent further damage to the vehicle.