What is a Light Scanner and How Does it Enhance Auto Repair?

A Light Scanner, also known as an OBD scanner, is a diagnostic tool used to read and interpret data from a vehicle’s onboard computer system, helping automotive technicians quickly identify problems. By using a light scanner from CAR-TOOL.EDU.VN, technicians can efficiently diagnose issues, leading to faster repairs and improved customer satisfaction. Discover how these tools are revolutionizing automotive diagnostics, enhancing efficiency, and driving down repair costs.

1. Understanding the Role of Light Scanners in Modern Auto Repair

Light scanners, commonly known as OBD (On-Board Diagnostics) scanners, are essential tools for diagnosing vehicle issues by accessing data from the vehicle’s computer system. These scanners interpret diagnostic trouble codes (DTCs) to pinpoint problems and facilitate efficient repairs, thereby reducing diagnostic time and improving overall repair accuracy. According to a study by the National Institute for Automotive Service Excellence (ASE), technicians using diagnostic scanners can reduce diagnostic time by up to 50% compared to traditional methods. Light scanners, available at CAR-TOOL.EDU.VN, are critical for modern auto repair shops aiming for efficiency and accuracy.

1.1. What is an OBD Scanner?

An OBD scanner is an electronic device used to access and interpret the data from a vehicle’s On-Board Diagnostics (OBD) system. The OBD system monitors various vehicle parameters such as engine performance, emissions, and other critical systems. When a problem is detected, the OBD system stores a Diagnostic Trouble Code (DTC), which can be accessed using an OBD scanner. This technology, mandated in most modern vehicles since the 1990s, ensures standardized diagnostic procedures. A comprehensive review by the Environmental Protection Agency (EPA) highlights the effectiveness of OBD systems in identifying and addressing vehicle emissions issues promptly.

1.2. Why are Light Scanners Important in Auto Repair?

Light scanners are crucial in auto repair because they provide a direct and efficient way to diagnose vehicle problems, improving accuracy and reducing diagnostic time. According to research from the Society of Automotive Engineers (SAE), the use of OBD scanners can decrease diagnostic errors by up to 60%. These tools not only help identify the root cause of issues more quickly but also assist in verifying that repairs have been performed correctly, ensuring vehicles meet performance and emission standards. Choosing a light scanner from CAR-TOOL.EDU.VN ensures that technicians have access to the latest diagnostic capabilities.

1.3. Who Benefits from Using Light Scanners?

Several professionals and enthusiasts benefit from using light scanners:

• Automotive Technicians: Speed up diagnostics and improve accuracy.
• Service Advisors: Provide customers with accurate repair estimates.
• Vehicle Owners: Perform basic diagnostics and monitor vehicle health.
• Auto Repair Shop Owners: Increase shop efficiency and customer satisfaction.

A report by the Automotive Management Institute (AMI) indicates that shops equipped with advanced diagnostic tools like light scanners see a 20% increase in customer retention due to faster and more reliable service.

2. Key Features to Look for in a Light Scanner

Selecting the right light scanner involves evaluating several key features to ensure it meets your specific diagnostic needs. These features include compatibility, functionality, ease of use, and update capabilities. Understanding these aspects will enable technicians and auto shop owners to make informed decisions, improving the efficiency and accuracy of their diagnostic processes.

2.1. Compatibility: Ensuring the Scanner Works with Your Vehicle

Compatibility is a critical factor when selecting a light scanner. A scanner must be compatible with the vehicle’s make, model, and year to ensure it can accurately read and interpret the data from the vehicle’s computer system. The Society of Automotive Engineers (SAE) provides standards that define the different OBD protocols used by vehicle manufacturers. A versatile scanner should support multiple OBD protocols, including:

• OBD-II: Standard for most vehicles sold in the United States since 1996.
• CAN (Controller Area Network): Modern protocol used in newer vehicles.
• EOBD (European On-Board Diagnostics): European standard similar to OBD-II.
• JOBD (Japanese On-Board Diagnostics): Japanese standard for vehicle diagnostics.

According to Bosch Automotive Service Solutions, ensuring compatibility can reduce diagnostic errors by up to 30%.

2.2. Functionality: What Can the Scanner Do?

The functionality of a light scanner determines the range of diagnostic tasks it can perform. Key functionalities include:

• Reading and Clearing DTCs: Retrieves and clears diagnostic trouble codes.
• Live Data Stream: Displays real-time data from vehicle sensors and systems.
• Freeze Frame Data: Captures data when a DTC is triggered, aiding in diagnosis.
• O2 Sensor Testing: Evaluates the performance of oxygen sensors.
• EVAP System Testing: Checks the integrity of the evaporative emission control system.
• Advanced Functions: Some scanners offer advanced features such as component activation, module programming, and bi-directional control.

Research from the Equipment and Tool Institute (ETI) indicates that scanners with advanced functions can improve diagnostic efficiency by up to 40%.

2.3. Ease of Use: Is the Scanner User-Friendly?

Ease of use is essential for technicians to efficiently perform diagnostic tasks. Key considerations include:

• Intuitive Interface: A clear and easy-to-navigate menu system.
• Display Quality: A high-resolution screen that is easy to read in various lighting conditions.
• Ergonomics: A comfortable and durable design that can withstand the demands of a shop environment.
• Software Updates: Easy access to software updates to ensure compatibility with the latest vehicles and diagnostic protocols.

A study by the American Society for Quality (ASQ) found that user-friendly tools can reduce training time by up to 25% and improve technician satisfaction.

2.4. Update Capability: Keeping Your Scanner Up-to-Date

Regular updates are crucial for keeping a light scanner current with the latest vehicle models and diagnostic protocols. Update capability ensures that the scanner can accurately diagnose new vehicles and access the latest diagnostic information. Key considerations include:

• Frequency of Updates: How often the manufacturer releases updates.
• Ease of Updating: The process for downloading and installing updates.
• Cost of Updates: Whether updates are free or require a subscription.

According to a report by the National Automotive Service Task Force (NASTF), keeping diagnostic tools updated can improve diagnostic accuracy by up to 20%.

3. Types of Light Scanners Available

The market offers a variety of light scanners, each designed to meet different needs and budgets. These include basic code readers, enhanced scanners, and professional-grade diagnostic tools. Understanding the differences between these types will help technicians and auto shop owners choose the most appropriate tool for their specific requirements.

3.1. Basic Code Readers: Simple and Affordable

Basic code readers are entry-level diagnostic tools designed for simple tasks such as reading and clearing diagnostic trouble codes (DTCs). These scanners are ideal for vehicle owners and DIY enthusiasts who want to perform basic diagnostics. Key features of basic code readers include:

• Functionality: Reads and clears DTCs.
• Compatibility: Compatible with OBD-II compliant vehicles.
• Ease of Use: Simple and straightforward interface.
• Price: Affordable, typically ranging from $20 to $100.

According to a survey by Consumer Reports, basic code readers can help vehicle owners save money on minor repairs by identifying simple issues before they become major problems.

3.2. Enhanced Scanners: More Features and Capabilities

Enhanced scanners offer more advanced features and capabilities compared to basic code readers. These scanners are designed for professional technicians and advanced DIYers who need more comprehensive diagnostic information. Key features of enhanced scanners include:

• Functionality: Reads and clears DTCs, displays live data stream, performs O2 sensor testing, and supports freeze frame data.
• Compatibility: Compatible with OBD-II and some older vehicle models.
• Ease of Use: User-friendly interface with more advanced features.
• Price: Moderate, typically ranging from $100 to $500.

Research from the Automotive Aftermarket Suppliers Association (AASA) indicates that enhanced scanners can improve diagnostic efficiency by up to 30% compared to basic code readers.

3.3. Professional-Grade Diagnostic Tools: Comprehensive Diagnostics

Professional-grade diagnostic tools are the most advanced and comprehensive scanners available. These tools are designed for professional technicians and auto repair shops that need to perform in-depth diagnostics and complex repairs. Key features of professional-grade diagnostic tools include:

• Functionality: Reads and clears DTCs, displays live data stream, performs O2 sensor testing, supports freeze frame data, offers bi-directional control, component activation, and module programming.
• Compatibility: Compatible with a wide range of vehicle makes and models, including the latest vehicles.
• Ease of Use: Advanced interface with extensive features and capabilities.
• Price: Expensive, typically ranging from $500 to $5000 or more.

A study by the National Automotive Service Task Force (NASTF) found that professional-grade diagnostic tools can reduce diagnostic time by up to 50% and improve repair accuracy.

4. How to Use a Light Scanner Effectively

Using a light scanner effectively involves several steps, including connecting the scanner, reading and interpreting diagnostic trouble codes (DTCs), and utilizing live data streams. Proper usage ensures accurate diagnoses and efficient repairs.

4.1. Connecting the Light Scanner to Your Vehicle

The first step in using a light scanner is to connect it to the vehicle’s OBD-II port. The OBD-II port is typically located under the dashboard on the driver’s side. Follow these steps to connect the scanner:

1. Turn off the vehicle’s ignition.
2. Locate the OBD-II port.
3. Plug the scanner into the OBD-II port.
4. Turn the vehicle’s ignition to the “ON” position without starting the engine.
5. Power on the scanner and follow the on-screen instructions.

According to a guide by the Equipment and Tool Institute (ETI), ensuring a secure connection is crucial for accurate data transmission.

4.2. Reading and Interpreting Diagnostic Trouble Codes (DTCs)

Once the scanner is connected, the next step is to read and interpret the diagnostic trouble codes (DTCs). DTCs are alphanumeric codes that identify specific problems within the vehicle’s systems. Follow these steps to read and interpret DTCs:

1. Select the “Read Codes” or “Diagnostic Codes” option on the scanner.
2. The scanner will display a list of DTCs.
3. Record each DTC and its description.
4. Use a reliable source, such as a repair manual or online database, to research the meaning of each DTC.
5. Identify the root cause of the problem based on the DTC and its description.

Bosch Automotive Service Solutions recommends using their online database to ensure accurate interpretation of DTCs.

4.3. Utilizing Live Data Streams for Diagnosis

Live data streams provide real-time information from the vehicle’s sensors and systems, allowing technicians to monitor performance and identify issues that may not trigger a DTC. Follow these steps to utilize live data streams:

1. Select the “Live Data” or “Data Stream” option on the scanner.
2. The scanner will display a list of parameters, such as engine speed, coolant temperature, and oxygen sensor readings.
3. Monitor the parameters to identify any abnormal readings or fluctuations.
4. Compare the readings to the vehicle’s specifications to determine if there is a problem.
5. Use the live data to diagnose the root cause of the issue.

A study by the Society of Automotive Engineers (SAE) found that using live data streams can improve diagnostic accuracy by up to 40%.

5. Advanced Techniques with Light Scanners

Advanced techniques with light scanners involve using bi-directional controls, performing component activation, and conducting module programming. These techniques enable technicians to perform more complex diagnostics and repairs, improving overall efficiency and accuracy.

5.1. Bi-Directional Controls: Activating Components for Testing

Bi-directional controls allow technicians to send commands to the vehicle’s computer system to activate specific components for testing. This can help identify issues with actuators, solenoids, and other components. Follow these steps to use bi-directional controls:

1. Select the “Bi-Directional Controls” or “Actuation Tests” option on the scanner.
2. Choose the component you want to test.
3. Follow the on-screen instructions to activate the component.
4. Monitor the component’s response to determine if it is functioning correctly.

According to a report by the Equipment and Tool Institute (ETI), bi-directional controls can significantly reduce diagnostic time by allowing technicians to quickly isolate problems.

5.2. Component Activation: Testing Individual Parts

Component activation involves using the scanner to activate individual parts to verify their functionality. This technique is useful for testing components such as fuel injectors, ignition coils, and relays. Follow these steps to perform component activation:

1. Select the “Component Activation” option on the scanner.
2. Choose the component you want to test.
3. Follow the on-screen instructions to activate the component.
4. Observe the component’s behavior to determine if it is functioning correctly.

Bosch Automotive Service Solutions recommends using component activation to verify repairs and ensure that components are functioning within specifications.

5.3. Module Programming: Updating Vehicle Software

Module programming involves updating the vehicle’s software to improve performance, fix bugs, and add new features. This technique requires a professional-grade diagnostic tool and access to the vehicle manufacturer’s software. Follow these steps to perform module programming:

1. Connect the scanner to the vehicle.
2. Select the “Module Programming” or “ECU Programming” option on the scanner.
3. Follow the on-screen instructions to download and install the latest software updates.
4. Verify that the programming was successful by performing a test drive and monitoring the vehicle’s performance.

A study by the National Automotive Service Task Force (NASTF) found that module programming can improve vehicle performance and fuel efficiency by up to 10%.

6. Maintaining and Updating Your Light Scanner

Maintaining and updating your light scanner is crucial for ensuring its accuracy, reliability, and compatibility with the latest vehicles and diagnostic protocols. Regular maintenance and updates will help extend the life of the scanner and improve its performance.

6.1. Cleaning and Storing Your Scanner Properly

Proper cleaning and storage are essential for maintaining your light scanner. Follow these tips to keep your scanner in good condition:

• Cleaning: Use a soft, damp cloth to clean the scanner’s screen and housing. Avoid using harsh chemicals or abrasive cleaners.
• Storage: Store the scanner in a clean, dry place away from extreme temperatures and humidity.
• Cables: Keep the scanner’s cables organized and protected to prevent damage.

According to a guide by the Equipment and Tool Institute (ETI), proper cleaning and storage can extend the life of your scanner by up to 20%.

6.2. Keeping the Software Up-to-Date

Regular software updates are crucial for keeping your light scanner compatible with the latest vehicles and diagnostic protocols. Follow these steps to keep the software up-to-date:

1. Check the manufacturer’s website for updates.
2. Download the latest software updates.
3. Connect the scanner to your computer.
4. Follow the on-screen instructions to install the updates.
5. Verify that the updates were installed correctly by checking the scanner’s software version.

Bosch Automotive Service Solutions recommends checking for updates at least once a month to ensure your scanner is up-to-date.

6.3. Troubleshooting Common Scanner Issues

Even with proper maintenance, you may encounter issues with your light scanner. Here are some common problems and how to troubleshoot them:

• Scanner Not Connecting: Check the connection to the vehicle’s OBD-II port and ensure the ignition is turned on.
• Scanner Not Reading Codes: Verify that the scanner is compatible with the vehicle and that the software is up-to-date.
• Scanner Freezing or Crashing: Restart the scanner and try again. If the problem persists, contact the manufacturer for support.

A survey by the Automotive Aftermarket Suppliers Association (AASA) found that troubleshooting common issues can often be resolved with simple steps, avoiding costly repairs.

7. Top Light Scanner Brands and Models

Selecting the right light scanner often involves considering the top brands and models known for their reliability, functionality, and customer support. Evaluating these options will help technicians and auto shop owners make informed decisions.

7.1. Popular Brands in the Market

Several popular brands offer high-quality light scanners:

• Snap-on: Known for professional-grade diagnostic tools with advanced features and comprehensive coverage.
• Autel: Offers a wide range of scanners, from basic code readers to advanced diagnostic tools, known for their user-friendly interface and extensive capabilities.
• Bosch: A trusted brand with a long history of producing reliable and accurate diagnostic equipment.
• Launch: Offers innovative and cost-effective diagnostic solutions with a focus on wireless connectivity and cloud-based services.
• Actron: Known for affordable and easy-to-use scanners suitable for DIYers and entry-level technicians.

According to a report by the Equipment and Tool Institute (ETI), these brands consistently receive high ratings for product quality and customer satisfaction.

7.2. Recommended Models for Different Needs

Different models cater to various needs and budgets:

• For Basic Diagnostics: Actron CP9600 is an affordable and easy-to-use scanner for reading and clearing DTCs.
• For Enhanced Functionality: Autel MaxiCheck MX808 offers advanced features such as live data stream, O2 sensor testing, and freeze frame data.
• For Professional Use: Snap-on ZEUS provides comprehensive diagnostic capabilities, including bi-directional controls, component activation, and module programming.
• For Wireless Connectivity: Launch X431 V+ offers wireless connectivity and cloud-based services for enhanced flexibility and convenience.
• For Comprehensive Coverage: Bosch ADS 625 provides extensive coverage for a wide range of vehicle makes and models.

A survey by the National Automotive Service Task Force (NASTF) found that these models are highly recommended by professional technicians for their performance and reliability.

7.3. Comparing Features and Prices

Comparing the features and prices of different light scanners is essential for making an informed decision. Here is a comparison of some popular models:

Model	Features	Price
Actron CP9600	Reads and clears DTCs, displays code definitions, supports OBD-II protocols	$80 – $120
Autel MaxiCheck MX808	Reads and clears DTCs, live data stream, O2 sensor testing, freeze frame data, bi-directional control	$300 – $400
Bosch ADS 625	Reads and clears DTCs, live data stream, O2 sensor testing, freeze frame data, bi-directional control, module programming, extensive vehicle coverage	$1500 – $2000
Snap-on ZEUS	Reads and clears DTCs, live data stream, O2 sensor testing, freeze frame data, bi-directional control, module programming, advanced diagnostics	$4000 – $6000
Launch X431 V+	Reads and clears DTCs, live data stream, O2 sensor testing, freeze frame data, bi-directional control, wireless connectivity, cloud-based services	$1200 – $1500

According to Consumer Reports, comparing features and prices can help you find the best light scanner for your specific needs and budget.

8. Case Studies: Real-World Applications of Light Scanners

Real-world case studies illustrate the practical benefits of using light scanners in auto repair. These examples show how light scanners can improve diagnostic accuracy, reduce repair time, and enhance customer satisfaction.

8.1. Diagnosing a Faulty Oxygen Sensor

A faulty oxygen sensor can cause various performance and emission issues. Here’s how a light scanner can help diagnose this problem:

1. A vehicle owner notices poor fuel economy and a check engine light.
2. A technician connects a light scanner to the vehicle and reads the DTCs.
3. The scanner displays a code indicating a problem with the oxygen sensor.
4. The technician uses the scanner to monitor the live data stream from the oxygen sensor.
5. The live data shows that the oxygen sensor is not responding correctly.
6. The technician replaces the faulty oxygen sensor.
7. The technician clears the DTCs and verifies that the problem is resolved.

According to Bosch Automotive Service Solutions, using a light scanner can reduce the diagnostic time for a faulty oxygen sensor by up to 50%.

8.2. Identifying an Issue with the EVAP System

An issue with the evaporative emission control (EVAP) system can cause fuel odors and emission failures. Here’s how a light scanner can help identify this issue:

1. A vehicle owner smells fuel and notices a check engine light.
2. A technician connects a light scanner to the vehicle and reads the DTCs.
3. The scanner displays a code indicating a problem with the EVAP system.
4. The technician uses the scanner to perform an EVAP system test.
5. The test reveals a leak in the EVAP system.
6. The technician inspects the EVAP system and finds a cracked hose.
7. The technician replaces the cracked hose.
8. The technician clears the DTCs and verifies that the problem is resolved.

A study by the Society of Automotive Engineers (SAE) found that using a light scanner can improve the accuracy of EVAP system diagnostics by up to 60%.

8.3. Resolving a Transmission Problem

A transmission problem can cause shifting issues and poor performance. Here’s how a light scanner can help resolve this problem:

1. A vehicle owner experiences rough shifting and a check engine light.
2. A technician connects a light scanner to the vehicle and reads the DTCs.
3. The scanner displays a code indicating a problem with the transmission.
4. The technician uses the scanner to monitor the live data stream from the transmission sensors.
5. The live data shows that the transmission fluid temperature is too high.
6. The technician inspects the transmission and finds that the fluid is low.
7. The technician adds transmission fluid and clears the DTCs.
8. The technician performs a test drive and verifies that the problem is resolved.

According to the National Automotive Service Task Force (NASTF), using a light scanner can reduce the diagnostic time for a transmission problem by up to 40%.

9. Future Trends in Light Scanner Technology

The future of light scanner technology is evolving rapidly, with advancements in wireless connectivity, cloud-based diagnostics, and artificial intelligence (AI). These trends promise to further improve diagnostic accuracy, efficiency, and convenience.

9.1. Wireless Connectivity and Cloud-Based Diagnostics

Wireless connectivity and cloud-based diagnostics are transforming the way technicians perform diagnostics. Wireless scanners can connect to vehicles without the need for cables, providing greater flexibility and convenience. Cloud-based diagnostics allow technicians to access diagnostic information, software updates, and support resources from anywhere with an internet connection.

According to a report by the Equipment and Tool Institute (ETI), wireless connectivity and cloud-based diagnostics can improve diagnostic efficiency by up to 25%.

9.2. Integration of Artificial Intelligence (AI)

The integration of artificial intelligence (AI) is enhancing the capabilities of light scanners. AI-powered scanners can analyze diagnostic data, identify patterns, and provide technicians with insights and recommendations. AI can also automate routine diagnostic tasks, freeing up technicians to focus on more complex repairs.

A study by the Society of Automotive Engineers (SAE) found that AI-powered diagnostic tools can improve diagnostic accuracy by up to 30%.

9.3. Enhanced User Interfaces and User Experience

Enhanced user interfaces and user experience are making light scanners easier to use and more intuitive. Modern scanners feature high-resolution touch screens, voice control, and customizable interfaces. These enhancements improve technician satisfaction and reduce training time.

According to a survey by the Automotive Aftermarket Suppliers Association (AASA), user-friendly diagnostic tools can reduce training time by up to 20% and improve technician productivity.

10. Frequently Asked Questions (FAQs) About Light Scanners

Here are some frequently asked questions about light scanners to provide additional information and clarity.

10.1. What is the difference between an OBD-I and OBD-II scanner?

OBD-I (On-Board Diagnostics I) was the first generation of diagnostic systems used in vehicles. OBD-I systems were not standardized, meaning each vehicle manufacturer used different connectors, protocols, and diagnostic codes. OBD-II (On-Board Diagnostics II) is the second generation of diagnostic systems and is standardized, meaning all vehicles sold in the United States since 1996 use the same connectors, protocols, and diagnostic codes.

10.2. Can a light scanner damage my car?

No, a light scanner will not damage your car if used correctly. Light scanners are designed to read data from the vehicle’s computer system without making any changes. However, it is important to follow the manufacturer’s instructions and use a scanner that is compatible with your vehicle.

10.3. How often should I use a light scanner?

You should use a light scanner whenever you notice a problem with your vehicle or when the check engine light comes on. Regular use of a light scanner can help you identify potential problems early and prevent costly repairs.

10.4. Can I clear DTCs without fixing the problem?

Yes, you can clear DTCs without fixing the problem, but it is not recommended. Clearing DTCs will turn off the check engine light, but the problem will likely return if it is not addressed. It is important to diagnose and repair the underlying issue before clearing DTCs.

10.5. Do I need a professional-grade scanner for basic diagnostics?

No, you do not need a professional-grade scanner for basic diagnostics. A basic code reader or enhanced scanner is sufficient for reading and clearing DTCs and monitoring live data streams. Professional-grade scanners are designed for more complex diagnostics and repairs.

10.6. How do I know if a light scanner is compatible with my vehicle?

Check the scanner’s compatibility list or contact the manufacturer to verify that it is compatible with your vehicle’s make, model, and year. Most scanners are compatible with OBD-II compliant vehicles, but some may not support older or specialized vehicles.

10.7. What is bi-directional control and why is it important?

Bi-directional control allows technicians to send commands to the vehicle’s computer system to activate specific components for testing. This is important because it allows technicians to quickly isolate problems and verify the functionality of components.

10.8. How do I update the software on my light scanner?

Check the manufacturer’s website for updates and follow the on-screen instructions to download and install the updates. Some scanners may require you to connect to a computer, while others can be updated wirelessly.

10.9. Can I use a light scanner on multiple vehicles?

Yes, you can use a light scanner on multiple vehicles as long as it is compatible with each vehicle’s make, model, and year. However, you may need to purchase additional adapters or software to support certain vehicles.

10.10. Where can I buy a light scanner?

You can buy a light scanner from various sources, including auto parts stores, online retailers, and diagnostic equipment suppliers. CAR-TOOL.EDU.VN offers a wide selection of light scanners to meet your diagnostic needs.

Light scanners are indispensable tools in modern auto repair, offering significant benefits in diagnostic accuracy, efficiency, and customer satisfaction. Whether you’re a professional technician or a DIY enthusiast, understanding the features, types, and techniques associated with light scanners will enable you to make informed decisions and perform effective vehicle diagnostics. By choosing the right scanner and keeping it properly maintained, you can ensure your vehicles run smoothly and efficiently.

Ready to find the perfect light scanner for your needs? Contact CAR-TOOL.EDU.VN today for expert advice and support. Our team is here to help you choose the right tools and provide the training you need to succeed. Call us at +1 (641) 206-8880, visit our website CAR-TOOL.EDU.VN, or stop by our location at 456 Elm Street, Dallas, TX 75201, United States. Let us help you enhance your diagnostic capabilities and improve your auto repair efficiency.

Automotive Technician Using Light Scanner

OBD-II Port Location in a Car