Introduction
The KONNWEI KDIAG is a versatile Bluetooth OBD2 full system car diagnostic tool designed to transform your smart device (Android or iOS) into a professional vehicle diagnostic scanner. It supports comprehensive vehicle diagnosis, including reading and clearing Diagnostic Trouble Codes (DTCs), monitoring live data streams, and performing special reset services such as oil reset and battery matching. With its Auto-VIN function, the KDIAG automatically identifies most car models, and a full system vehicle health report is generated after each diagnosis, which can be easily shared. The device offers lifetime free updates, ensuring you always have access to the latest features and vehicle compatibility.
Setup Guide
- Download and Install the KDIAG App: Search for 'KDIAG' in your phone's app store (Apple App Store for iOS or Google Play Store for Android) and install the application. You can also find the download link on the official KONNWEI website.
- Connect the KDIAG Dongle: Locate your vehicle's 16-pin OBD2 port, typically found under the dashboard on the driver's side. Plug the KDIAG dongle firmly into this port.
- Start Your Vehicle: Turn the ignition key to the 'ON' position or start your car's engine.
- Launch the KDIAG App: Open the KDIAG application on your smartphone.
- Establish Bluetooth Connection: Within the KDIAG app, tap the Bluetooth icon. The device should automatically connect via Bluetooth 5.2. Once connected, you can begin diagnosing your vehicle.
Operating Instructions
Full System Diagnosis
The KDIAG application allows you to establish a data link to the electronic control systems of your vehicle for comprehensive diagnosis. It performs functional tests and retrieves diagnostic information, including trouble codes, event codes, and live data for various vehicle control systems. This includes, but is not limited to, the ABS (Anti-lock Braking System), SRS (Supplemental Restraint System), Engine, Transmission, Brake System, Emission System, Fuel System, Light System, and A/C System.
Supported Car Brands for Full System Diagnosis (31 Makes)
The KDIAG supports a wide range of car brands for full system diagnosis. Please refer to the table below for a detailed list:
Full OBD2 Functions
The KDIAG provides comprehensive OBD2 diagnostic functions for all OBD II/EOBD compliant vehicles. These functions are available for lifetime free updates:
- View freeze frame data
- Support graph data stream
- O2 Sensor test
- Evap system test
- On-Board monitor test
- Read & Clear DTCs (Diagnostic Trouble Codes)
- Identify VIN information
- DTC code lookup
- Turn off MIL (Malfunction Indicator Lights)
- I/M Readiness status test information
Special Reset Services
The KDIAG offers two commonly used special reset services: Oil Reset and Battery Match. These functions are provided free for lifetime and are continuously updated. Please note that special functions may only support specific models of a brand. If your car model is not compatible, it is not a quality problem.
Oil Reset Service Supported Brands
Battery Match Service Supported Brands
Product Demonstration Video
Maintenance and Updates
The KONNWEI KDIAG is designed for long-term use with continuous support:
- Lifetime Free Updates: Both the full system diagnosis and all OBD functions receive free lifetime updates, ensuring compatibility with new vehicle models and diagnostic protocols.
- Online Feedback: If you encounter any technical problems or have suggestions, you can use the online feedback feature within the KDIAG app to communicate directly with technical support.
- One-Click Data Sharing: Easily share diagnostic reports or data streams with others for analysis or record-keeping.
Troubleshooting and Compatibility
While the KDIAG is compatible with most cars, certain factors can affect its functionality:
- OBD2 Protocol Variations: Different regions and car manufacturers may implement OBD2 protocols at different times or with special designs. This can lead to incompatibility with some vehicles, especially older models or certain Japanese and Korean brands.
- Special Function Limitations: Special reset functions (e.g., Oil Reset, Battery Match) are designed for specific car models and may not work across all vehicles, even within a supported brand. This is not a product defect.
- Known Incompatibilities:
- Russian Cars: Not supported for VAZ, UAZ, LADA.
- Trucks: Not compatible with Ssangyong Actyon (2009-2017), Ssangyong Korando 2.0 TD Diesel (2013-2017), Ssangyong Kyron 2.0 Diesel (2010-2017), Ssangyong Rexton (2011-2017).
- Other Specific Models: Not supported for Opel Corsa C 2004 1.3 CDTI, VW Golf 4 2002, Citroen C4/C5, Chevrolet cars, Renault Logon/Megane, Skoda Fabia, Skoda Octavia.
User Tips for Compatibility
- Verify Compatibility: Before purchasing or attempting diagnosis, always check if your specific car brand, model, and year are compatible with the KDIAG.
- Contact Customer Service: If you are unsure about compatibility for your vehicle (e.g., 'BYD F3 2018', 'Renault Clio 4 2014', 'Chrysler 300C 3.0CRD 2010'), provide your car's brand, model, engine size, and year to customer service for verification.
- Utilize Online Feedback: For any technical issues or questions regarding specific functions, use the in-app online feedback feature to get assistance from KONNWEI engineers.
Specifications
| Feature | Specification |
|---|---|
| Brand Name | KONNWEI |
| Model | KDIAG |
| Item Type | Code Readers & Scan Tools |
| Communication Interface | OBD-II, Bluetooth 5.2 |
| Software Update | Yes (Lifetime Free) |
| Software Version | Newest |
| Hardware Version | Newest |
| Working Voltage | 9-18V |
| Working Current | ≤100mA |
| Supported Languages | Dutch, English, French, Italian, Polish, Russian, Spanish, Chinese |
| Certification | CE |
| Origin | Mainland China |
| Device Dimensions (L x W) | 2.75 in x 1.89 in (approx. 7 cm x 4.8 cm) |
| Package Weight | 0.13 kg |
| Package Dimensions (L x W x H) | 10 cm x 5 cm x 2 cm |
Warranty and Support
KONNWEI is committed to providing excellent product support:
- Lifetime Free Updates: Enjoy continuous software updates for all diagnostic functions and vehicle compatibility at no additional cost.
- Technical Support: For any technical inquiries or issues, utilize the online feedback system within the KDIAG app. This allows you to directly communicate with KONNWEI engineers for prompt assistance.
- User Manual: A physical user manual is included in the product package for detailed instructions.
