KONNWEI KW320 OBD2 Car Scanner User Manual

1. Introduction

The KONNWEI KW320 OBD II/EOBD Scanner is a professional diagnostic tool designed to help technicians and car owners accurately diagnose engine-related problems. It supports all 10 OBD II test modes on compliant vehicles, providing comprehensive insights into your vehicle's emission control systems and key engine components.

The On-Board Diagnostics II (OBD II) system continuously monitors various emission control systems and engine components. When a malfunction is detected, the OBD II system illuminates the Malfunction Indicator Light (MIL) on the vehicle's dashboard, often accompanied by messages like "Check Engine" or "Service Engine Soon." The system also stores Diagnostic Trouble Codes (DTCs) and records the Readiness Monitor status, which are crucial for identifying and resolving issues.

2. Setup and Connection

The KW320 scanner is designed for easy plug-and-play operation. Follow these steps to connect the device to your vehicle:

1. Locate your vehicle's 16-pin OBD II diagnostic port. This port is usually found under the dashboard on the driver's side, but its exact location can vary by vehicle model.
2. Ensure your vehicle's ignition is in the "OFF" position before connecting the scanner.
3. Firmly plug the KW320's OBD II connector into your vehicle's diagnostic port.
4. Turn your vehicle's ignition to the "ON" position (do not start the engine unless instructed by a specific diagnostic procedure). The scanner will power on automatically.
5. Follow the on-screen instructions on the KW320 to begin diagnostics.

3. Operating Instructions

The KONNWEI KW320 offers a range of diagnostic functions accessible through its intuitive menu system. Use the navigation buttons (Up, Down, Left, Right, OK, Back) to navigate the menus and select options.

3.1 Main Menu Overview

The main menu typically includes options such as "Diagnose," "Smog Check," "DTC Lookup," "Review," "Tool Setup," and "Help."

3.2 Key Diagnostic Functions

The KW320 provides comprehensive OBD II functions to help you understand and resolve vehicle issues:

• Read Codes: Retrieves generic (P0, P2, P3, U0) and manufacturer-specific (P1, P3, U1) Diagnostic Trouble Codes (DTCs), as well as pending codes.
• Erase Codes: Clears fault codes from the vehicle's computer, turns off the Check Engine Light (MIL), and resets monitors.
• Live Data Stream: Displays real-time data from the vehicle's sensors in both text and graphical formats, allowing for detailed analysis of engine performance.
• Freeze Frame Data: Captures a snapshot of vehicle operating conditions at the moment a fault code was set, helping to identify the root cause of the problem.
• I/M Readiness Status: Checks the status of emission-related monitors to determine if the vehicle is ready for an emissions test.
• O2 Sensor Test: Retrieves O2 sensor monitoring test results for the most recently completed tests from the vehicle's on-board computer.
• EVAP System Test: Initiates a leak test for the vehicle's Evaporative Emission System.
• On-Board Monitoring Test: Retrieves test results for emission-related powertrain components and systems that are not continuously monitored.
• Vehicle Information (VIN, CIN, CVN): Retrieves the Vehicle Identification Number, Calibration ID, and Calibration Verification Number.
• DTC Lookup: Provides definitions for Diagnostic Trouble Codes directly on the screen, eliminating the need for external resources.
• Data Record and Playback: Allows storage of live data streams and freeze frame data for later review and printing.

3.3 Language Support

The KONNWEI KW320 supports multiple languages for user convenience. You can select your preferred language from the "Tool Setup" menu.

• English
• French
• German
• Dutch
• Spanish
• Russian
• Portuguese
• Polish
• Italian

4. Maintenance

To ensure the longevity and optimal performance of your KONNWEI KW320 scanner, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the device. Avoid using abrasive cleaners or solvents that could damage the screen or casing.
• Storage: Store the scanner in a cool, dry place away from direct sunlight and extreme temperatures. Keep it in its original carton package when not in use to protect it from dust and physical damage.
• Software Updates: The KW320 offers lifetime free software updates. Regularly check for and install updates to ensure compatibility with the latest vehicle models and diagnostic protocols, and to benefit from new features and bug fixes. Connect the device to a computer and follow the instructions provided on the KONNWEI website for updating the software.
• Cable Care: Handle the OBD II cable carefully. Avoid bending or twisting it excessively, and ensure the connector pins are clean and free from damage.

5. Troubleshooting

If you encounter issues while using your KONNWEI KW320, refer to the following common troubleshooting tips:

• Device Not Powering On:
  • Ensure the OBD II connector is securely plugged into the vehicle's diagnostic port.
  • Verify that the vehicle's ignition is in the "ON" position.
  • Check the vehicle's fuse for the OBD II port (consult your vehicle's manual for fuse box location and relevant fuse).
• Communication Error:
  • Confirm that your vehicle is OBD II compliant (generally 1996 and newer for USA, 2003+ for EU, 2007+ for Asian cars).
  • Ensure the ignition is "ON" and the engine is off (unless performing specific tests that require the engine to run).
  • Try connecting the scanner to another OBD II compliant vehicle to rule out a scanner issue.
  • Check for bent or damaged pins on the OBD II connector.
• Inaccurate Readings or Freezing:
  • Ensure the scanner's software is up to date.
  • Restart the scanner and reconnect it to the vehicle.
  • Verify the vehicle's battery voltage is within the operating range (9-18V).
• Compatibility Warnings:

  Please note that while the KW320 is broadly compatible with most OBD II vehicles, some specific models or regions may have compatibility limitations. For example:

  • Not supported for Russian cars (VAZ, UAZ, LADA).
  • Not compatible with certain trucks like Ssangyong Actyon, Korando, Kyron, Rexton (2.0 TD Diesel).
  • Not supported for specific models like Opel Corsa C 2004 1.3 CDTI, VW Golf 4 2002, Citroen C4/C5, Chevrolet cars, Renault Logon/Megane/Clio 2/Dacia Logan, Skoda Fabia/Octavia.
  • This device primarily offers OBD2 functions and does not include special functions like ABS Reset or Airbag Reset.
  • Electric vehicles (EVs) like the Nissan Leaf typically use different diagnostic protocols and are generally not supported by standard OBD2 scanners like the KW320.

6. Specifications

6.1 Supported Protocols

• SAE J1850 PWM (41.6Kbaud)
• SAE J1850 VPW (10.4Kbaud)
• ISO9141-2 (5 baud init, 10.4Kbaud)
• ISO14230-4 KWP (5 baud init, 10.4 Kbaud)
• ISO14230-4 KWP (fast init, 10.4 Kbaud)
• ISO15765-4 CAN (11bit ID, 500 Kbaud)
• ISO15765-4 CAN (29bit ID, 500 Kbaud)
• ISO15765-4 CAN (11bit ID, 250 Kbaud)
• ISO15765-4 CAN (29bit ID, 250 Kbaud)

7. Warranty and Support

The KONNWEI KW320 comes with a 1-year warranty, ensuring peace of mind for your purchase. Additionally, the device benefits from lifetime free software updates to keep it current with evolving vehicle technologies and diagnostic requirements.

For technical support, warranty claims, or inquiries regarding software updates, please refer to the official KONNWEI support channels or the seller's contact information. Always provide your product model (KW320) and any relevant details about your vehicle (make, model, year, engine type) when seeking assistance.

8. User Tips

Here are some helpful tips from other users and common questions to enhance your experience with the KW320:

• Vehicle Compatibility: While the KW320 is broadly compatible, specific car models, especially older ones or those from certain regions (e.g., some Russian, Japanese, or Korean brands), might not fully support the OBD2 protocol. Always check your vehicle's manual or consult with the manufacturer if unsure.
• Electric Vehicles (EVs): The KW320 is designed for standard OBD2 protocols, which primarily apply to internal combustion engine (ICE) vehicles for emissions diagnostics. It is generally not compatible with electric cars like the Nissan Leaf, as EVs use different diagnostic systems.
• Special Functions: Remember that the KW320 focuses on core OBD2 diagnostic functions (reading/clearing codes, live data). It does not perform advanced special functions such as ABS resets, airbag system diagnostics, or other module-specific programming.
• Data Interpretation: When viewing live data streams, pay attention to parameters that are outside normal operating ranges or show erratic behavior. Comparing multiple parameters can help pinpoint issues.
• Before Clearing Codes: Always note down any stored DTCs before clearing them. This information can be vital for future diagnosis if the problem recurs.

9. Package Contents

Upon opening your KONNWEI KW320 package, you should find the following items:

• 1 x KONNWEI KW320 OBD2 Scanner Unit
• 1 x User Manual
• 1 x Carton Package