1. Introduction
The KONNWEI KDIAG is an advanced Bluetooth OBD2 scanner designed for comprehensive vehicle diagnostics. This device allows users to perform full system scans, read and clear trouble codes, view live data streams, and execute various special maintenance functions on a wide range of car brands. It is an essential tool for both automotive enthusiasts and professional technicians seeking efficient and accurate vehicle health monitoring.
2. Key Features
- Full System Diagnostic: Supports comprehensive scanning for over 31 car brands.
- OBD II Full Function: Includes standard OBD2 diagnostic capabilities.
- Special Functions: Offers advanced functions such as TPS (Throttle Position Sensor), Airbag, SAS (Steering Angle Sensor), EPB (Electronic Parking Brake), Battery Match, Suspension, Lamp Adjust, Injector Coding, and Maintenance Reset.
- Lifetime Free Update: Ensures your device always has the latest software and vehicle coverage.
- Multi-Language Support: Available in English, French, German, Italian, Spanish, Russian, and Polish.
- Bluetooth Connectivity: Easy one-click Bluetooth connection via the dedicated KDIAG app.
- Bidirectional Control: Perform active tests on various vehicle components.
3. Setup Guide
3.1 Package Contents
Before starting, ensure all items are present:
- KONNWEI KDIAG Bluetooth OBD2 Scanner
- User Manual
- Protective Carrying Case
3.2 Hardware Installation
- Locate your vehicle's OBD2 port. This is typically found under the dashboard on the driver's side.
- Plug the KONNWEI KDIAG device firmly into the OBD2 port. The device will power on automatically.
3.3 Software Installation
- Download the official "KDIAG" app from your mobile device's app store:
- For Android devices: Search "KDIAG" on Google Play Store.
- For iOS devices: Search "KDIAG" on the Apple App Store.
- Install the app on your smartphone or tablet.
3.4 Bluetooth Connection
- Ensure your mobile device's Bluetooth is turned on.
- IMPORTANT: Do NOT attempt to pair the KDIAG device through your phone's Bluetooth settings. The connection MUST be established directly within the KDIAG app.
- Open the KDIAG app. The app will automatically scan for and connect to the KDIAG device. Follow any on-screen prompts within the app to complete the connection.
Video demonstrating the one-click Bluetooth connection process within the KDIAG app.
4. Operating Instructions
4.1 General Diagnostic Workflow
- Connect the KDIAG device to your vehicle's OBD2 port and ensure it's powered on.
- Launch the KDIAG app on your mobile device and establish a Bluetooth connection.
- From the main menu, select the desired diagnostic function (e.g., "OBD Diagnostor" for basic OBD2 functions, "Professional Diag" for full system scans, or specific "Maintenance Reset" functions).
- Follow the on-screen instructions to perform the selected diagnostic task.
4.2 Reading and Erasing Trouble Codes
- In the app, navigate to the "Diagnostic Menu" (e.g., for a specific car brand).
- Select "Read Codes" to retrieve current, pending, and permanent Diagnostic Trouble Codes (DTCs).
- To clear codes, select "Erase Codes". The app will prompt you to turn the ignition ON (engine OFF) before proceeding. Confirm to clear the codes.
4.3 Live Datastream
- From the "Diagnostic Menu", select "Data Stream".
- You can choose to "View All Items", "Select Items" for specific parameters, or "View Graphic Items" for visual representation.
- The app will display real-time vehicle sensor data, such as engine coolant temperature, fuel trim, intake manifold pressure, and engine RPM.
4.4 Full System Diagnostic
- Select "Professional Diag" from the main menu.
- Choose your car brand from the list. You may need to download specific car brand software packages if it's your first time using them.
- The app can often automatically detect the VIN code for your vehicle. Confirm the VIN if prompted.
- Proceed with a "Health Report" or select specific systems (e.g., Engine, Transmission, Airbag, EPB, TPMS) for diagnosis.
4.5 Special Functions
The KDIAG supports various special functions for maintenance and service resets:
- Battery Match: For registering new batteries or resetting battery management systems.
- Maintenance Reset (Oil Reset): For resetting service lights after oil changes or scheduled maintenance.
- EPB (Electronic Parking Brake): For servicing brake pads on vehicles with electronic parking brakes.
- SAS (Steering Angle Sensor): For calibrating the steering angle sensor.
- Injector Coding: For coding new injectors to the ECU.
- Airbag: For diagnosing and resetting airbag system faults.
- Suspension: For adjusting or calibrating vehicle suspension systems.
- Lamp Adjust: For adjusting headlight settings.
- TPS (Throttle Position Sensor): For throttle body adaptation.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the KDIAG device in its protective carrying case in a cool, dry place away from direct sunlight and extreme temperatures.
- Software Updates: Regularly check the KDIAG app for available software updates to ensure optimal performance and the latest vehicle coverage. Updates are provided free for life.
6. Troubleshooting
6.1 Device Not Powering On
- Ensure the KDIAG device is securely plugged into the vehicle's OBD2 port.
- Verify the vehicle's ignition is turned on (or engine running, depending on the function).
6.2 Bluetooth Connection Issues
- Confirm Bluetooth is enabled on your mobile device.
- Remember: Connect ONLY through the KDIAG app, not your phone's general Bluetooth settings.
- Restart the KDIAG app and try connecting again.
- Ensure no other Bluetooth devices are interfering with the connection.
6.3 App Not Responding or Freezing
- Close the app completely and reopen it.
- Restart your mobile device.
- Ensure your app is updated to the latest version.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | KONNWEI KDIAG |
| Hardware Version | New Version |
| Software Version | New Version |
| Item Weight | 0.12 kg |
| Material | Plastic |
| Certification | CE |
| Origin | Mainland China |
| Package Length | 17 cm |
| Package Width | 14 cm |
| Package Height | 5 cm |
| Package Weight | 0.14 kg |
8. User Tips
- Service Interval Reset: For vehicles like the Audi A1, the KDIAG's Maintenance Reset function can be used to reset the service interval indicator after performing maintenance. Ensure you select the correct vehicle model and year within the app for accurate functionality.
- Vehicle Compatibility: While the KDIAG supports over 31 car brands, specific functions may vary by vehicle model and year. Always check the app's compatibility list or consult KONNWEI support if unsure.
9. Warranty and Support
The KONNWEI KDIAG device comes with a commitment to quality and ongoing support:
- Lifetime Free Software Updates: Enjoy continuous improvements and expanded vehicle coverage without additional subscription fees.
- For detailed warranty information, technical support, or further assistance, please refer to the official KONNWEI website or contact their customer service directly.
