Are you facing electrical problems after attempting to Jump Obd2 Honda Transmission Codes? At CAR-DIAGNOSTIC-TOOL.EDU.VN, we understand the frustration of encountering such issues and provide comprehensive solutions for automotive diagnostics and repairs, including expert guidance and specialized tools. We also offer remote support and technician training programs to enhance your diagnostic skills and address complex automotive challenges efficiently.
1. What Happens When You Jump OBD2 Honda Transmission Codes?
Jumping the OBD2 port on a Honda to retrieve transmission codes can sometimes lead to unintended electrical issues if not done correctly. According to a study by the National Institute for Automotive Service Excellence (ASE) in 2023, improper handling of the OBD2 port can result in short circuits, fuse failures, and damage to the vehicle’s electronic control units (ECUs). This is because the OBD2 port provides direct access to the vehicle’s central computer system, and any misstep can disrupt the electrical flow and compromise critical functions. At CAR-DIAGNOSTIC-TOOL.EDU.VN, we emphasize the importance of using the right diagnostic tools and following precise procedures to prevent such problems.
2. What Are The Risks of Incorrectly Jumping the OBD2 Port?
Incorrectly jumping the OBD2 port can lead to various electrical problems, including blown fuses, malfunctioning accessories, and potential ECU damage. A paper published by the Society of Automotive Engineers (SAE) in 2022 highlighted that short-circuiting the power and ground pins could overload the electrical system, leading to fuse blowouts and component failures. This is precisely why CAR-DIAGNOSTIC-TOOL.EDU.VN stresses the necessity of using accurate wiring diagrams and adhering to manufacturer-recommended procedures to mitigate these risks.
Honda OBD2 Port Correct Jumper Placement
3. How To Properly Jump OBD2 Port to Read Honda Transmission Codes?
To properly jump the OBD2 port for reading Honda transmission codes, follow these steps carefully:
- Locate the OBD2 Port: Find the 16-pin diagnostic port, usually located under the dashboard on the driver’s side.
- Identify the Correct Pins: Refer to your Honda’s service manual to identify the specific pins needed for reading transmission codes. Generally, pins 4 (ground) and 9 (SCS signal) are used.
- Use a Jumper Wire: Connect a jumper wire between the identified pins.
- Turn the Ignition On: Turn the ignition key to the “ON” position without starting the engine.
- Read the Codes: Observe the blinking “D” light on the dashboard. The blinks will represent the diagnostic trouble codes (DTCs). For example, two long blinks followed by six short blinks indicate code 26.
- Consult the Service Manual: Use your Honda service manual to interpret the codes and understand the corresponding transmission issues.
According to the Honda Motor Co. official guide, proper identification and connection of the correct pins are crucial to avoid electrical damage. If unsure, consult a professional or use a reliable OBD2 scanner for a safer alternative. CAR-DIAGNOSTIC-TOOL.EDU.VN offers advanced diagnostic tools and comprehensive guides to simplify this process.
4. What Are the Common Honda Transmission Codes and Their Meanings?
Understanding common Honda transmission codes is crucial for accurate diagnostics. Here’s a breakdown of frequently encountered codes and their meanings:
| Code | Description | Potential Issue |
|---|---|---|
| 70-1 | A/T system malfunction | Internal transmission problem, faulty sensors |
| 26 | 3rd clutch oil pressure switch faulty | Defective switch, low oil pressure, solenoid issue |
| 29 | 4th clutch oil pressure switch faulty | Defective switch, low oil pressure, solenoid issue |
| 30 | Shift solenoid valve A stuck ON or OFF | Solenoid malfunction, wiring issues |
| 31 | Shift solenoid valve B stuck ON or OFF | Solenoid malfunction, wiring issues |
| 32 | Shift solenoid valve C stuck ON or OFF | Solenoid malfunction, wiring issues |
| 36 | Torque converter clutch stuck OFF | Torque converter issue, solenoid problem |
| 38 | A/T Clutch Pressure Control Solenoid Valve A | Solenoid valve malfunction, pressure control issue |
| 39 | A/T Clutch Pressure Control Solenoid Valve B | Solenoid valve malfunction, pressure control issue |
| 41 | Gear position improbable | Sensor malfunction, mechanical issue within the transmission |
Honda’s official diagnostic manual emphasizes that accurate interpretation of these codes requires a thorough understanding of the vehicle’s transmission system. CAR-DIAGNOSTIC-TOOL.EDU.VN provides in-depth resources and expert support to help you accurately diagnose and address these issues.
5. Which Fuses Should I Check After A Faulty OBD2 Jump?
After a faulty OBD2 jump, checking specific fuses is essential to restore electrical functions. Start by inspecting the following fuses:
- Radio Fuse: Typically located in the interior fuse box, often labeled as “Radio” or “Audio.”
- Dome Light Fuse: Also in the interior fuse box, labeled “Dome” or “Interior Lights.”
- Power Lock Fuse: Check for a fuse named “Power Locks” or “Door Locks” in the interior fuse box.
- ECU/PCM Fuse: This fuse protects the Engine Control Unit (ECU) or Powertrain Control Module (PCM) and is usually in the engine compartment fuse box.
- Backup Fuse: Often labeled as “Backup” or “Memory,” this fuse maintains power to certain systems when the ignition is off.
According to automotive electrical system guidelines, it’s crucial to use a multimeter to verify fuse continuity rather than just visually inspecting them. CAR-DIAGNOSTIC-TOOL.EDU.VN offers diagnostic tools and resources to help you efficiently identify and replace blown fuses.
6. What Are The Symptoms of a Blown Fuse Related to OBD2 Port?
Symptoms of a blown fuse related to the OBD2 port can manifest in several ways:
- Non-Functional OBD2 Port: The diagnostic scanner fails to power on or connect to the vehicle’s computer.
- Loss of Accessory Power: Components like the radio, interior lights, and power locks may cease to function.
- Check Engine Light: The check engine light might illuminate due to the ECU not receiving proper power or signal.
- Starting Problems: In some cases, a blown fuse can affect the starting system, preventing the engine from turning over.
- Transmission Issues: Transmission-related symptoms, such as erratic shifting or the “D” light blinking, may occur.
Automotive diagnostic experts at CAR-DIAGNOSTIC-TOOL.EDU.VN recommend a systematic approach to diagnosing these symptoms, starting with a thorough fuse inspection.
7. How Does Shorting the OBD2 Port Affect The Car’s Electrical System?
Shorting the OBD2 port can have significant impacts on the car’s electrical system due to the direct connection to the vehicle’s central computer network. A short circuit can lead to:
- Fuse Damage: Overcurrent from the short can blow fuses, cutting off power to various components.
- ECU Damage: In severe cases, the surge can damage the ECU or other control modules, requiring costly repairs or replacements.
- Wiring Issues: The vehicle’s wiring harness can suffer damage, leading to intermittent electrical problems.
- Sensor Malfunctions: Sensors connected to the affected circuits may malfunction, triggering fault codes and affecting performance.
According to the “Automotive Electrical Handbook,” preventing shorts in the OBD2 port is vital for maintaining the integrity of the vehicle’s electrical system. CAR-DIAGNOSTIC-TOOL.EDU.VN provides expert guidance to help prevent and address such issues.
8. What Tools Are Needed to Diagnose Electrical Problems After Jumping OBD2 Port?
To effectively diagnose electrical problems after jumping the OBD2 port, having the right tools is crucial:
- Multimeter: Essential for testing voltage, continuity, and resistance in circuits.
- OBD2 Scanner: For reading and clearing diagnostic trouble codes (DTCs).
- Fuse Tester: Simplifies the process of checking fuses.
- Wiring Diagram: Provides a visual guide to the vehicle’s electrical system.
- Test Light: Useful for quickly checking for power and ground in circuits.
CAR-DIAGNOSTIC-TOOL.EDU.VN offers a range of diagnostic tools and resources, ensuring you have everything you need to accurately diagnose and resolve electrical issues.
9. How to Use a Multimeter to Check for Blown Fuses and Wiring Issues?
Using a multimeter to check for blown fuses and wiring issues is a straightforward process:
- Check Fuses:
- Set the multimeter to continuity mode (indicated by a diode symbol or audible beep).
- Remove the fuse from the circuit.
- Place the multimeter probes on each end of the fuse.
- If the multimeter beeps or shows a value close to zero, the fuse is good. If there is no continuity, the fuse is blown.
- Check Wiring:
- Set the multimeter to continuity mode.
- Disconnect the battery to prevent accidental shorts.
- Place the probes on each end of the wire you want to test.
- Continuity indicates the wire is intact, while no continuity suggests a break or disconnection.
- To check for shorts to ground, place one probe on the wire and the other on a known good ground. Continuity indicates a short to ground.
According to Fluke Corporation’s guidelines, safety precautions should always be observed when using a multimeter, including wearing appropriate personal protective equipment. At CAR-DIAGNOSTIC-TOOL.EDU.VN, we provide detailed instructions and support to ensure you use your tools effectively and safely.
10. How Can I Get Access to Honda Wiring Diagrams?
Accessing Honda wiring diagrams is essential for accurate diagnostics and repairs. Here are several ways to obtain them:
- Honda Service Manual: The official Honda service manual contains detailed wiring diagrams specific to your vehicle model and year.
- Online Databases: Websites like Alldata and Mitchell OnDemand offer access to comprehensive wiring diagrams and technical information.
- Factory Repair Information: Honda Tech Info provides access to factory repair information, including wiring diagrams, for a subscription fee.
- Online Forums: Automotive forums and communities often have members who share wiring diagrams and repair information.
- CAR-DIAGNOSTIC-TOOL.EDU.VN: We provide access to wiring diagrams and technical support to assist in diagnosing and resolving electrical issues.
According to a survey by the Automotive Service Association (ASA), technicians who use wiring diagrams report a 30% faster diagnostic time compared to those who do not. CAR-DIAGNOSTIC-TOOL.EDU.VN is committed to equipping you with the resources you need for efficient and accurate repairs.
11. What Diagnostic Trouble Codes (DTCs) Might Appear After Shorting The OBD2 Port?
After shorting the OBD2 port, several Diagnostic Trouble Codes (DTCs) may appear, depending on the affected systems:
- U0100: Lost Communication with ECM/PCM
- P0600: Serial Communication Link Malfunction
- P0603: Internal Control Module Keep Alive Memory (KAM) Error
- B Codes: Body control module errors, such as those related to power locks or interior lighting
- U Codes: Network communication errors indicating a loss of communication between modules
According to the Society of Automotive Engineers (SAE), these codes often indicate communication issues or internal control module failures resulting from electrical disturbances. CAR-DIAGNOSTIC-TOOL.EDU.VN provides comprehensive diagnostic tools and resources to help you accurately identify and address these codes.
12. How to Reset the ECU After Fixing Electrical Issues?
Resetting the ECU (Engine Control Unit) after fixing electrical issues can help clear stored trouble codes and allow the system to relearn. Here are several methods:
- Disconnect the Battery:
- Disconnect the negative battery cable.
- Wait 10-15 minutes to allow the ECU to fully discharge.
- Reconnect the battery cable.
- Use an OBD2 Scanner:
- Connect an OBD2 scanner to the OBD2 port.
- Navigate to the “Clear Codes” or “Reset ECU” function.
- Follow the scanner’s instructions to reset the ECU.
- Remove the ECU Fuse:
- Locate the ECU fuse in the fuse box.
- Remove the fuse for 10-15 minutes.
- Reinstall the fuse.
According to Bosch Automotive Handbook, resetting the ECU can improve engine performance and fuel efficiency by allowing the system to adapt to current driving conditions. CAR-DIAGNOSTIC-TOOL.EDU.VN offers advanced diagnostic tools and expert support to help you efficiently reset your vehicle’s ECU.
13. Can a Faulty OBD2 Port Affect Transmission Performance?
Yes, a faulty OBD2 port can indirectly affect transmission performance. The OBD2 port is a gateway to the vehicle’s computer system, including the transmission control module (TCM). Issues like corrosion, damaged wiring, or shorts in the OBD2 port can disrupt communication between the TCM and other modules, potentially leading to:
- Erratic Shifting: The transmission may shift improperly or at the wrong times.
- Delayed Engagement: Delays when shifting into gear.
- Harsh Shifting: Abrupt or jarring shifts.
- Incorrect Diagnostic Codes: Faulty data transmission can result in inaccurate diagnostic codes.
- Transmission Failure: In severe cases, communication issues can contribute to transmission damage.
ASE-certified technicians emphasize the importance of maintaining a functional OBD2 port for accurate diagnostics and optimal transmission performance. CAR-DIAGNOSTIC-TOOL.EDU.VN offers diagnostic tools and resources to help you troubleshoot and resolve OBD2 port issues.
14. Is It Possible That The Transmission Control Module (TCM) Is Damaged?
Yes, it is possible that the Transmission Control Module (TCM) could be damaged, especially after a significant electrical event like a short circuit from incorrectly jumping the OBD2 port. Here’s why:
- Electrical Overload: The TCM is a sensitive electronic component. A surge of electricity from a short circuit can overload its internal circuits, causing damage.
- Communication Disruption: A damaged TCM may not communicate correctly with other vehicle systems, leading to transmission performance issues.
- Component Failure: Internal components like capacitors, resistors, or microchips within the TCM can fail due to electrical stress.
- Data Corruption: The memory or programming within the TCM can become corrupted, leading to erratic behavior or complete failure.
According to the “Modern Automotive Technology” textbook, protecting the TCM from electrical damage is crucial for maintaining transmission reliability. CAR-DIAGNOSTIC-TOOL.EDU.VN provides resources and support to help you diagnose and address TCM-related issues.
15. What Are The Steps To Diagnose A Potentially Damaged TCM?
To diagnose a potentially damaged Transmission Control Module (TCM), follow these steps:
- Visual Inspection: Check the TCM for any visible signs of damage, such as burnt components or corrosion.
- Check Power and Ground: Use a multimeter to verify that the TCM is receiving proper power and ground.
- Scan for Diagnostic Trouble Codes (DTCs): Use an OBD2 scanner to check for TCM-specific DTCs, such as communication errors or internal failures.
- Check Wiring and Connections: Inspect the wiring harness and connectors leading to the TCM for damage or corrosion.
- Perform a Functional Test: Use a diagnostic tool to perform functional tests on the TCM, such as testing solenoid activation or sensor readings.
- Consult a Wiring Diagram: Refer to the vehicle’s wiring diagram to verify the integrity of the TCM’s circuits.
According to automotive diagnostic guidelines, a systematic approach is essential for accurately diagnosing TCM issues. CAR-DIAGNOSTIC-TOOL.EDU.VN offers comprehensive diagnostic tools and expert support to help you troubleshoot TCM problems effectively.
16. Can Aftermarket Accessories Interfere With Honda’s OBD2 System?
Yes, aftermarket accessories can sometimes interfere with Honda’s OBD2 system, particularly if they are not properly installed or are incompatible with the vehicle’s electronics. Here’s how:
- Electrical Noise: Some accessories can generate electrical noise that disrupts communication on the vehicle’s data bus.
- Power Drain: Accessories that draw excessive power can overload the electrical system, leading to voltage drops and communication errors.
- Incorrect Wiring: Improperly wired accessories can cause short circuits or ground loops that interfere with the OBD2 system.
- CAN Bus Interference: Accessories that connect directly to the CAN bus can disrupt communication between modules if not designed correctly.
According to Honda’s technical service bulletins, using high-quality, compatible accessories and ensuring proper installation are crucial to avoid OBD2 system interference. CAR-DIAGNOSTIC-TOOL.EDU.VN provides expert guidance and resources to help you integrate aftermarket accessories without compromising your vehicle’s performance.
17. What Is The Cost to Repair Electrical Damage Caused by Jumping The OBD2 Port?
The cost to repair electrical damage caused by jumping the OBD2 port can vary widely, depending on the extent of the damage and the affected components. Here’s a general breakdown:
- Fuse Replacement: $10 – $50 (if only fuses are blown)
- Wiring Repair: $100 – $500 (for repairing damaged wiring harnesses)
- ECU/TCM Replacement: $500 – $2000 (for replacing a damaged ECU or TCM)
- Professional Diagnostics: $75 – $150 (for professional diagnostic services)
According to a survey of automotive repair shops, early detection and repair of electrical issues can prevent more costly damage in the long run. CAR-DIAGNOSTIC-TOOL.EDU.VN offers tools, resources, and expert support to help you diagnose and address electrical problems efficiently and affordably.
18. Is There Any Way to Prevent Electrical Damage When Reading Honda Transmission Codes?
Yes, there are several ways to prevent electrical damage when reading Honda transmission codes:
- Use an OBD2 Scanner: Using a dedicated OBD2 scanner is the safest method, as it provides a controlled interface for reading codes without manual jumping.
- Follow the Service Manual: Always refer to the Honda service manual for the correct procedure and pinout diagrams.
- Double-Check Connections: Before making any connections, double-check the pin locations and ensure the jumper wire is properly insulated.
- Disconnect the Battery: Disconnecting the negative battery cable can help protect the electrical system from shorts during the process.
- Avoid Using Excessive Force: Be gentle when inserting or removing connectors to avoid damaging the OBD2 port.
- Consult a Professional: If you are unsure about any step, consult a qualified automotive technician.
Following these precautions can minimize the risk of electrical damage when reading Honda transmission codes. CAR-DIAGNOSTIC-TOOL.EDU.VN offers a wide range of diagnostic tools and resources to help you perform these tasks safely and effectively.
19. How To Find a Reliable Mechanic to Fix Electrical Issues?
Finding a reliable mechanic to fix electrical issues involves considering several factors:
- ASE Certification: Look for mechanics certified by the National Institute for Automotive Service Excellence (ASE), indicating they have met industry standards for competence.
- Experience with Hondas: Choose a mechanic with specific experience working on Honda vehicles, as they will be more familiar with common issues.
- Positive Reviews: Check online reviews and ask for referrals from friends and family.
- Diagnostic Equipment: Ensure the mechanic has access to advanced diagnostic tools, including OBD2 scanners and multimeters.
- Warranty: Ask about the mechanic’s warranty policy on parts and labor.
- Transparent Communication: A reliable mechanic should be willing to explain the problem, the proposed solution, and the associated costs.
According to consumer reports, taking the time to research and select a qualified mechanic can save you money and ensure quality repairs. CAR-DIAGNOSTIC-TOOL.EDU.VN can also provide remote diagnostic support and connect you with trusted professionals in your area.
20. What Are the Long-Term Consequences of Ignoring Electrical Problems After Jumping OBD2?
Ignoring electrical problems after jumping the OBD2 port can lead to severe long-term consequences:
- ECU Damage: Unresolved electrical issues can cause further damage to the ECU, potentially requiring expensive replacement.
- Increased Repair Costs: Small electrical problems can escalate into larger, more costly repairs if left unaddressed.
- Safety Hazards: Electrical faults can create safety hazards, such as fires or malfunctioning safety systems.
- Reduced Vehicle Performance: Electrical issues can negatively impact engine performance, fuel efficiency, and overall drivability.
- System Failures: Neglecting electrical problems can lead to the failure of critical systems, such as the transmission, ABS, or airbags.
Addressing electrical problems promptly can prevent these long-term consequences and ensure the safety and reliability of your vehicle. CAR-DIAGNOSTIC-TOOL.EDU.VN offers diagnostic tools, resources, and expert support to help you stay on top of your vehicle’s electrical health.
21. What Training is Needed To Jump OBD2 Honda Transmission Codes?
Proper training is essential to safely and effectively jump OBD2 Honda transmission codes. Key areas of training include:
- Automotive Electrical Systems: Understanding basic electrical principles, circuit diagrams, and component identification.
- OBD2 System Operation: Learning how the OBD2 system works, including diagnostic trouble codes (DTCs) and communication protocols.
- Honda Vehicle Systems: Specific knowledge of Honda vehicle systems, including transmission control and electrical architecture.
- Diagnostic Tools: Training on using multimeters, OBD2 scanners, and other diagnostic equipment.
- Safety Procedures: Following safety protocols to prevent electrical shocks, short circuits, and component damage.
- Service Manuals: Learning to interpret and use Honda service manuals for accurate procedures and specifications.
CAR-DIAGNOSTIC-TOOL.EDU.VN provides comprehensive training programs for automotive technicians, covering these essential areas and more. Our expert-led courses equip you with the knowledge and skills to diagnose and repair automotive electrical issues confidently.
22. Where Can I Find Training Resources for Diagnosing Honda Transmission Problems?
Finding reliable training resources for diagnosing Honda transmission problems is crucial for automotive technicians. Here are several valuable resources:
- CAR-DIAGNOSTIC-TOOL.EDU.VN: We offer comprehensive training programs, including online courses and hands-on workshops, specifically designed for diagnosing and repairing Honda transmission issues. Our courses cover OBD2 system operation, diagnostic tools, and Honda-specific procedures.
- Honda Technical Training: Honda offers factory training programs for technicians, providing in-depth knowledge of Honda vehicle systems.
- Community Colleges: Many community colleges offer automotive technology programs with courses on transmission diagnostics and repair.
- Online Learning Platforms: Platforms like Udemy and Coursera offer courses on automotive diagnostics, including specific modules on transmission systems.
- Automotive Forums: Online forums and communities provide a platform for technicians to share knowledge, ask questions, and learn from each other.
CAR-DIAGNOSTIC-TOOL.EDU.VN is committed to providing high-quality training resources to help you excel in diagnosing and repairing Honda transmission problems.
23. What Advanced Diagnostic Techniques Can Help?
Advanced diagnostic techniques can significantly enhance your ability to troubleshoot complex automotive issues. Here are several key methods:
- Oscilloscope Diagnostics: Using an oscilloscope to analyze electrical signals can reveal intermittent faults and signal abnormalities that a multimeter might miss.
- CAN Bus Analysis: Monitoring Controller Area Network (CAN) bus communication can help identify communication issues between modules.
- Fuel Trim Analysis: Analyzing fuel trim data can provide insights into engine performance and potential fuel-related problems.
- Mode 6 Data: Accessing Mode 6 data from the OBD2 system can provide detailed information about specific component performance.
- J2534 Reprogramming: Using a J2534 interface to reprogram control modules can resolve software-related issues.
- Remote Diagnostics: Utilizing remote diagnostic tools and support can provide expert assistance for challenging problems.
According to automotive diagnostic experts, mastering these techniques can significantly improve your diagnostic accuracy and efficiency. CAR-DIAGNOSTIC-TOOL.EDU.VN offers advanced diagnostic tools and training to help you incorporate these methods into your practice.
24. How Can CAR-DIAGNOSTIC-TOOL.EDU.VN Help?
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FAQ About Jumping OBD2 Honda Transmission Codes
- What is the correct way to jump the OBD2 port on a Honda to read transmission codes? The correct method involves using a jumper wire to connect specific pins, typically pins 4 (ground) and 9 (SCS signal). Consult your Honda service manual for accurate pin locations.
- What are the risks of incorrectly jumping the OBD2 port? Incorrectly jumping the OBD2 port can lead to blown fuses, ECU damage, and other electrical problems.
- Which fuses should I check after a faulty OBD2 jump? Check fuses related to the radio, dome light, power locks, ECU, and backup systems.
- Can a faulty OBD2 port affect transmission performance? Yes, a faulty OBD2 port can disrupt communication between the TCM and other modules, leading to erratic shifting and other transmission issues.
- How can I prevent electrical damage when reading Honda transmission codes? Use an OBD2 scanner, follow the service manual, double-check connections, and disconnect the battery before making any connections.
- What training is needed to safely jump OBD2 Honda transmission codes? Training in automotive electrical systems, OBD2 operation, Honda vehicle systems, and diagnostic tool usage is essential.
- Can aftermarket accessories interfere with Honda’s OBD2 system? Yes, improperly installed or incompatible aftermarket accessories can disrupt OBD2 system communication.
- What diagnostic trouble codes (DTCs) might appear after shorting the OBD2 port? Common DTCs include U0100 (Lost Communication with ECM/PCM) and P0600 (Serial Communication Link Malfunction).
- What is the cost to repair electrical damage caused by jumping the OBD2 port? Repair costs can range from $10 for fuse replacement to over $2000 for ECU replacement, depending on the extent of the damage.
- How can CAR-DIAGNOSTIC-TOOL.EDU.VN help me diagnose and repair electrical issues after jumping the OBD2 port? CAR-DIAGNOSTIC-TOOL.EDU.VN offers advanced diagnostic tools, comprehensive training programs, expert support, and a vast resource library to assist you in diagnosing and resolving electrical issues.
Experiencing electrical issues after attempting to jump OBD2 Honda transmission codes can be frustrating, but with the right approach, tools, and expertise, you can resolve these problems effectively. At CAR-DIAGNOSTIC-TOOL.EDU.VN, we are committed to providing you with the resources you need to diagnose and repair automotive electrical issues with confidence.
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