The B1315 code refers to a problem with the backlighting non-reflective controls illumination output circuit. Symptoms of this code may include dim or flickering interior lights or a complete loss of illumination.
The causes can vary, but commonly include a faulty body control module, issues with the wiring harness, or poor electrical connections.
To fix the B1315 code, it is important to first check for any safety recalls related to the vehicle. Then, a thorough inspection of the wiring and connectors should be conducted to identify and repair any issues.
The cost of diagnosis and repair may differ depending on the vehicle's specifications.
What does it mean
The B1315 code indicates a problem with the backlighting non-reflective controls illumination output circuit in a vehicle's Body Control Module (BCM). This can cause symptoms like the illumination of the Engine Light or Service Engine Soon Warning Light.
The code cannot be cleared without fixing the underlying issue, so it's important to address the root cause for proper vehicle performance.
what are the symptoms
What are the symptoms of the B1315 code?
- Engine Light ON: One of the most common symptoms of the B1315 code is the engine light illuminating on the vehicle's dashboard. This indicates a problem with the Body Control Module (BCM) and should not be ignored.
- Dim or non-functional backlighting: Another symptom of the B1315 code is the dimming or complete loss of backlighting for controls that are not reflective. This can affect the visibility and use of various controls in the vehicle, such as the instrument cluster, radio, and climate control panel.
- Other electrical issues: In some cases, the B1315 code can cause other electrical problems in the vehicle. This may include issues with power windows, door locks, interior lights, or other electrical components controlled by the BCM. These problems can further impact the performance and functionality of the vehicle.
Whate are the causes
One possible reason for the B1315 code is a faulty Body Control Module (BCM). This module controls various electronic systems in the vehicle, including the backlighting illumination. Other potential causes of the B1315 code include a damaged or shorted harness for the BCM or a weak electrical connection within the BCM circuit. It is important to note that there may be other reasons for this code as well.
To troubleshoot the B1315 code, there are some common steps that can be taken. These steps include:
- Visually inspecting the wiring harness and connectors related to the BCM, looking for any damaged components.
- Checking for broken, bent, pushed out, or corroded connector pins.
What Tools are Needed to diagnose
In order to diagnose the B1315 code accurately, the technician will need specific diagnostic tools. These tools are necessary to identify the cause of the code and decide on the best course of action.
Here are three tools that may be required:
- OBD-II Scanner: This tool retrieves the B1315 code from the vehicle's onboard computer. It allows the technician to access and understand the diagnostic trouble code, which provides valuable information about the specific issue.
- Multimeter: A multimeter measures electrical values like voltage, resistance, and continuity. It helps test the body control module (BCM) and related wiring for common electrical problems such as open circuits, short circuits, or poor connections.
- Wiring Diagrams: Detailed wiring diagrams of the vehicle's electrical system are vital for diagnosing the B1315 code. These diagrams visually represent the BCM wiring and can assist in identifying any potential wiring faults or abnormalities.
How to fix Step by Step
Step 1: Check the fuse box: Inspect all fuses related to the BCM and replace any that are blown.
Step 2: Visual inspection: Examine the wiring harness and connectors for any signs of damage, such as frayed wires or corrosion.
Step 3: Test the circuit: Use a multimeter to check for continuity and voltage in the illumination output circuit.
Step 4: Check ground connections: Ensure that all ground connections related to the BCM are secure and free from corrosion.
Step 5: Scan for additional codes: Perform a comprehensive scan of the vehicle's computer system to check for any additional codes that may provide further insight into the issue.
What are the Common Diagnosis Mistakes
Common diagnosis mistakes for the B1315 code can cause incorrect repairs and waste time and resources. To troubleshoot the issue effectively and efficiently, it is important to avoid these common diagnostic errors and misconceptions. Here are three common diagnosis mistakes to be aware of:
- Ignoring other related codes: When diagnosing the B1315 code, it is crucial not to overlook other related diagnostic trouble codes (DTCs) that may be present. These codes can provide valuable clues and help identify the root cause of the problem.
- Neglecting visual inspections: Visual inspections of the wiring harness and connectors are often overlooked, but they can reveal damaged components or broken, bent, pushed out, or corroded connector pins. Skipping this step can result in missed opportunities to identify and address the issue.
- Not checking for safety recalls: It is important to check for any safety recalls related to the vehicle. Ignoring this step can lead to missed opportunities for free repairs or replacements, and it can also result in the problem recurring.
What is the Repair Cost
The repair cost for the B1315 code can vary depending on location, vehicle make, model, and engine type. On average, auto repair shops charge between $75 and $150 per hour for labor. However, it's important to note that this is just an estimate and the actual cost may differ.
Regular maintenance and inspections can help prevent the code from reoccurring. Consult with a qualified technician for aftermarket solutions.
Can I drive safely with this code?
Driving safely with the B1315 code is not recommended due to potential issues with the illumination system. The code indicates a short to ground in the backlighting controls, which can affect other electrical components.
Promptly addressing the code is necessary to prevent further damage and ensure vehicle safety.
Conclusion
In conclusion, the B1315 code indicates a problem with the backlighting non-reflective controls illumination output circuit. It can be caused by a faulty body control module, open or shorted BCM harness, or poor electrical connection in the BCM circuit.
Symptoms include the engine light being on and the BCM detecting a short to ground. It is important to visually inspect the wiring harness and connectors for any damage.
The cost to diagnose and fix the B1315 code may vary depending on the vehicle and engine type.