1. Introduction
This manual provides detailed instructions for the operation and maintenance of your OBD II Car Diagnostic Tool (Models V309, V317, V318). This device is designed to assist in vehicle fault diagnosis, real-time data monitoring, and clearing engine fault codes, helping you maintain your vehicle's health and performance.
Key Features:
- Supports nine standard OBD II/EOBD protocols.
- Performs vehicle fault diagnosis and displays real-time data streams.
- Includes data storage and playback functions.
- Features emission testing data.
- Equipped with a color TFT LCD screen (V317: 2.8 inch; V318: 1.8 inch).
- High reliability with a wide power supply voltage range (8~36V for V317, 12V for V309/V318) and robust over-current/over-voltage protection.
- Multi-language support for user interface.
- Smart indicator lights for power, fault codes, and connection status.
- Universal compatibility with 1996 and newer OBDII & CAN vehicles in the USA, most 2003+ EU (EOBD), and 2007+ Asian car brands (diesel and gasoline 12V cars).
- Data printable via USB cable.
- Internet updatable via USB port (Windows XP-10 compatible).

Figure 1: V317 OBD2 Scanner highlighting supported languages and key features.

Figure 2: V318 Features Overview including car diagnosis, data stream, and sensor tests.

Figure 3: V318 demonstrating strong applicability across numerous car brands.
2. Setup
2.1 Package Contents
- 1 x Automobile Fault Detector (V309, V317, or V318 model)
- 1 x English User Manual

Figure 4: V309 Packing List showing the device, manual, and packaging.
2.2 Connecting the Device
- Locate your vehicle's OBD II diagnostic port. This port is typically found under the dashboard on the driver's side, but its exact location may vary by vehicle model.
- Ensure your vehicle's ignition is off before connecting the diagnostic tool.
- Plug the diagnostic tool's OBD connector firmly into the vehicle's OBD II port.
- Turn the vehicle's ignition to the 'ON' position (do not start the engine unless instructed by a specific diagnostic procedure).
- The device will power on automatically. Observe the indicator lights:
- Red Light: Indicates the product is energized normally.
- Green Light: Indicates successful protocol detection and connection with the vehicle. If the green light is off, it means the model does not match or there is a connection issue.
- Yellow Light: Illuminates when a fault code is detected.

Figure 5: Common locations for the OBD II port in a vehicle.

Figure 6: V318 device with labeled buttons and universal OBD plug.
2.3 Language Settings
To change the device language:
- From the main menu, navigate to 'Setup' or 'System Setup'.
- Select 'Language'.
- Use the Up/Down arrows to select your desired language (e.g., English, German, French, Spanish, Italian, Russian, Dutch, Chinese, Japanese, Korean).
- Press 'OK' to confirm your selection.

Figure 7: V318 displaying its multi-language support options.
3. Operating Instructions
Navigate through the menus using the directional arrows (Up, Down) and confirm selections with the 'OK' button. Use 'ESC' to go back to the previous screen.
Video 1: V317 Product Introduction and Basic Operation Demonstration.
3.1 Diagnosis Main Menu
The main menu provides access to various diagnostic functions:
- Read DTC: Reads engine or emission-related fault codes.
- Clear DTC: Erases and deletes fault codes, turning off the Check Engine Light (MIL).
- View Freeze Frame: Displays freeze frame data to analyze the real cause of engine failures.
- I/M Readiness: Checks monitor and I/M readiness status (emissions).
- Vehicle Info: Retrieves vehicle information (VIN code, CIN, and CVN Number).
- Live Data: Reads and displays live PCM data stream in text or graph mode.
- RT Curve (RealTime Curve): Displays real-time sensor data graphically.
- O2 Sensor: Displays live O2 oxygen sensor test data.
- EVAP: Displays EVAP System test data.
- Voltage: Reads current car battery voltage status.
- DTC Lib (DTC Lookup): Built-in library to query fault code definitions.
- Setup: Accesses product settings like language and unit of measure.

Figure 8: V317 main menu showing various diagnostic functions.

Figure 9: V309 diagnostic menu options.

Figure 10: V318 demonstrating comprehensive diagnosis and clearing of the check engine light.
3.2 Reading and Clearing Trouble Codes
- From the main menu, select 'Read DTC' to scan for diagnostic trouble codes. The device will display any found codes.
- To clear codes, select 'Clear DTC' from the main menu. Confirm the action when prompted. This will turn off the Check Engine Light (MIL) and reset monitors.

Figure 11: V309 showing Freeze Frame data and a DTC lookup result (P0115).

Figure 12: V318 displaying example Trouble Codes (P0230) and O2 Sensor data.
3.3 Viewing Live Data and Sensor Tests
- Select 'Live Data' to view real-time parameters such as engine RPM, vehicle speed, fuel system status, and more.
- Select 'O2 Sensor' to monitor oxygen sensor readings.
- Select 'EVAP' to perform and view data from the Evaporative Emission Control System test.
- Select 'Voltage' to check the current battery voltage.

Figure 13: V318 showing examples of Data Stream, O2 Sensor data, Voltage, and Vehicle ID Number.
4. Maintenance
4.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents that may damage the casing or screen.
4.2 Storage
Store the diagnostic tool in a dry place, away from direct sunlight and extreme temperatures. Refer to the specifications for recommended storage temperature ranges.
4.3 Software Updates
The device supports internet updates via its USB port. Connect the device to a computer running Windows XP, 7, 8, or 10. Follow the instructions provided with the update software to ensure your device has the latest features and bug fixes. Updates are free for the lifetime of the product.
5. Troubleshooting
- Device does not power on: Ensure the OBD connector is securely plugged into the vehicle's OBD II port and the vehicle's ignition is in the 'ON' position. Check the vehicle's battery voltage.
- Green indicator light is off: This indicates a potential model mismatch or a connection issue. Ensure your vehicle is OBD II compliant and the connection is secure.
- "No codes are stored in the module" message: This means the vehicle's ECU currently has no active or pending diagnostic trouble codes.
- Difficulty interpreting fault codes: Use the built-in 'DTC Lib' (DTC Lookup) function to get definitions for the displayed codes.
6. Specifications
6.1 General Specifications (Applicable to V309, V317, V318)
- 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)
6.2 Model-Specific Specifications
| Feature | V309 | V317 | V318 |
|---|---|---|---|
| Working Voltage | 12V | 9-16V | 12V |
| Working Current | 70mA | N/A | N/A |
| Operating Environment | -30~70°C | -20~65°C | -20~60°C |
| Storage Temperature | -40~80°C | -30~80°C | -30~70°C |
| Product Size (L*W*H) | 95.5*72.1*22.2mm | 168*25*89mm | 130*70*25mm |
| Product Weight | 186g | 203g (bare metal) | 144g (bare metal) |
| Package Dimensions | 200*130*31mm | 200*130*43mm | 160*70*60mm |
| Supported Languages | English, French, German, Dutch, Spanish | English, German, Italian, Dutch, French, Spanish, Chinese, Russian | Dutch, English, French, German, Italian, Japanese, Portuguese, Russian, Spanish, Korean, Chinese |
7. User Tips
- Check Compatibility: Always ensure your vehicle is OBD II compliant before attempting to use the diagnostic tool. Most vehicles manufactured after 1996 (USA), 2003 (EU), and 2007 (Asia) are compatible. For specific models like the Chevrolet Captiva 2011, verify its OBD II compliance.
- Secure Connection: A stable connection is crucial for accurate readings. Make sure the OBD plug is firmly inserted into the vehicle's port.
- Utilize DTC Lookup: The built-in DTC library is a powerful feature. If you encounter a fault code, use this function to quickly understand its meaning and potential causes.
- Keep Software Updated: Regularly check for and install software updates via the USB port to ensure your device has the latest vehicle protocols and diagnostic capabilities.
- Battery Monitoring: Use the battery voltage test function to monitor your car's battery health, especially during prolonged diagnostic sessions.
8. Warranty and Support
This product comes with lifetime free software updates, ensuring your diagnostic tool remains current with evolving vehicle technologies and diagnostic requirements. For technical support or inquiries, please refer to the contact information provided by your retailer or the manufacturer's official website.



