1. Introduction
Thank you for choosing the KONNWEI KW906 ELM327 V1.5 Bluetooth 5.0 OBD2 Scanner. This device is a universal multi-brand OBD-II auto scanner designed for self-diagnosis of cars. It provides comprehensive diagnostic information directly to your smartphone or tablet via Bluetooth 5.0. The KW906 is compatible with all 12V gasoline and diesel vehicles, including hybrid electric vehicles, manufactured after 1996 that utilize a 16-pin OBD-II port. It features an ON/OFF switch to conserve power and supports high-speed communication and a low-power sleep mode.
The device measures approximately 5 x 4 x 2.5 cm, making it compact and easy to use.
2. Setup Guide
2.1. Package Contents
Before you begin, please ensure all items are present in your package:
- KONNWEI KW906 ELM327 V1.5 Bluetooth 5.0 OBD2 Scanner device
- User Manual
2.2. App Installation
The KONNWEI KW906 requires a compatible application on your smartphone or tablet. The recommended app is 'Car Scanner ELM OBD2'.
- For iOS devices, search for "Car Scanner ELM OBD2" in the Apple App Store.
- For Android devices, search for "Car Scanner ELM OBD2" in the Google Play Store.
- Download and install the application.
2.3. Connecting the Device to Your Vehicle
- Locate your vehicle's 16-pin OBD-II diagnostic port. This port is typically found under the dashboard, near the steering wheel (positions A and B in the diagram), or occasionally in the center console or passenger side (positions C, D, or E).
- Plug the KW906 scanner firmly into the OBD-II port. Ensure the device's power switch is in the 'ON' position.
2.4. Bluetooth Pairing
The KW906 uses Bluetooth 5.0 for wireless communication with your device.
- Turn on your vehicle's ignition (do not start the engine yet).
- Open the Bluetooth settings on your smartphone or tablet.
- For iOS devices: Open the 'Car Scanner ELM OBD2' app directly. The app will handle the Bluetooth connection. Select connection type "Bluetooth LE (5.0)" and then select device name "KONNWEI". Do NOT connect via phone settings.
- For Android devices: Go to your phone's Bluetooth settings and pair with the device named "KONNWEI". Then, open the 'Car Scanner ELM OBD2' app and select Bluetooth as the connection type, choosing "KONNWEI" again within the app.
3. Operating Instructions
3.1. Initial Connection and Diagnostics
- After successfully pairing the device via Bluetooth, turn on the ignition and start the car. Wait approximately 10-30 seconds.
- On the main screen of the 'Car Scanner ELM OBD2' application, click the "Connect" button.
- The device will begin scanning your car and initializing. Upon successful connection, the status will display "Connected" for both ELM and ECU connections.
- You can now proceed with diagnostics.
3.2. Key Functions
The KW906 OBD2 scanner provides access to various diagnostic functions through the companion app:
- Read Codes: Retrieve Diagnostic Trouble Codes (DTCs) from the vehicle's ECU.
- Erase Codes: Clear DTCs and turn off the Check Engine Light (MIL).
- Live Data: View real-time sensor data, such as engine RPM, vehicle speed, coolant temperature, and more.
- Freeze Frame: Capture a snapshot of sensor data at the moment a DTC was set.
- O2 Sensor Test: Monitor and test the oxygen sensors.
- Dashboard: Customize a virtual dashboard to display key vehicle parameters.
- Evap Test: Perform the Evaporative Emission Control System Test.
- All Sensors: Access data from all available sensors.
- On-board Monitor Test: Check the results of on-board diagnostic monitoring tests for specific components/systems.
- ECU Identifiers: Retrieve vehicle information such as VIN (Vehicle Identification Number) and calibration IDs.
4. Maintenance
- Keep the device clean and free from dust and moisture.
- Store the device in a cool, dry place when not in use.
- Avoid dropping the device or subjecting it to strong impacts.
- Do not attempt to disassemble or modify the device, as this will void the warranty.
5. Troubleshooting
5.1. Device cannot find the "KONNWEI" Bluetooth network.
- Check if the adapter is powered on (button on the front panel).
- Check the power supply of your OBDII connector; it should provide 12-14 volts.
- Check if the car ignition is on.
- Try to turn off the ignition, remove the adapter from the socket, reinsert it, and then turn on the ignition again.
- Try searching for a Bluetooth network using another smartphone or tablet to rule out phone-specific issues.
5.2. Adapter disconnects during operation.
- Ensure that during the operation of the adapter, high-power devices are not charged through the cigarette lighter, as this can cause voltage fluctuations.
- There might be strong voltage surges in the car's network, due to which the adapter cannot work stably. Ensure the OBDII connector outputs a stable 12-14 volts.
5.3. The adapter cannot connect to the ECU.
- Perhaps the ECU installed on your car requires additional add-ons for correct connection, namely, entering the initialization code. The initialization code is written in most applications, as many of the programs have a ready-made list of codes for various car brands.
- Try some other applications. Different applications may use the protocols differently to communicate the adapter with the ECU.
- Make sure that only one adapter application is running at a time.
- Try reconnecting from step 1 of the Bluetooth pairing process.
6. Specifications
| Feature | Description |
|---|---|
| Brand Name | KONNWEI |
| Model | KW906 ELM327 V1.5 |
| Item Type | Code Readers & Scan Tools |
| Hardware Version | V1.5 |
| Software Version | Latest version |
| Special Features | Bluetooth 5.0 connectivity |
| Software Update | Yes |
| Language | English (default) |
| Certification | CE, FCC, RoHS |
| High-concerned chemical | None |
| Origin | Mainland China |
| Package Length | 17 cm |
| Package Width | 9 cm |
| Package Height | 7 cm |
| Package Weight | 0.09 kg |
7. User Tips
- Always ensure your vehicle's ignition is on before attempting to connect the scanner.
- For optimal performance, keep your smartphone's operating system and the 'Car Scanner ELM OBD2' app updated to their latest versions.
- If you experience connection issues, try restarting both the scanner (using its ON/OFF switch) and your smartphone's Bluetooth.
- While the device supports various protocols, some older or specialized vehicles might require specific app configurations or may not be fully compatible.
- The KW906 has an ON/OFF switch. Remember to turn it off when not in use to prevent draining your car's battery, although it has a low-power sleep mode.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official KONNWEI website or contact the seller directly. Keep your purchase receipt as proof of purchase for any warranty claims.
