1. Introduction
The Jexiwe CY3001 is a handheld OBD2 diagnostic tool designed to assist vehicle owners and technicians in quickly and efficiently diagnosing issues with their vehicles. This device allows for reading and erasing diagnostic trouble codes (DTCs), viewing live data, checking I/M readiness status, and performing various other diagnostic functions to ensure your vehicle operates optimally. It is a compact, powerful, and user-friendly instrument for maintaining your car's engine and charging system health.
2. Product Overview
2.1 Key Features
- 1.86" Full Color LCD-TFT Screen: Provides clear and easy-to-read diagnostic information.
- Bright Acrylic Screen Protective Cover: Enhances durability and protects the display.
- High Resilience Buttons: Designed for comfortable and long-lasting use.
- 16Pin Heavy-duty Lead Standard OBDII Plug: Ensures a secure and reliable connection to your vehicle.
- Upgraded CPU for High-speed Processing: Delivers fast and accurate diagnostic results.
- User-Friendly Visual Indicators: Green, Orange, and Red LEDs provide quick status checks.
- Handheld, Compact & Powerful Design: Easy to carry and operate.
- Plug & Play Operation: Simple to use without complex setup.
2.2 Functions
The CY3001 scanner offers a comprehensive set of diagnostic capabilities:
- Read Codes: Retrieves generic (P0, P2, P3, and U0) and manufacturer specific (P1, P3, and U1) codes.
- Erase Codes: Clears Diagnostic Trouble Codes (DTCs) and resets the Check Engine Light (MIL).
- View Freeze Frame: Displays a snapshot of operating conditions at the time of an emission-related fault.
- I/M Readiness: Checks the status of emission-related monitors to determine if they have run and completed their diagnostic testing.
- Vehicle Info: Retrieves vehicle identification number (VIN), calibration ID (CALID), and calibration verification number (CVN).
- Data Stream: Displays live sensor data in text and graph format.
- DTC Look Up: Provides definitions for Diagnostic Trouble Codes.
- O2 Sensor Test: Retrieves O2 sensor monitor test results for the most recently completed tests from the vehicle's on-board computer.
- On-Board Monitoring: Retrieves test results for emission-related powertrain components and systems that are not continuously monitored.
- Evap System (Mode 8): Initiates a test of the evaporative emission control system.

3. Specifications
| Attribute | Specification |
|---|---|
| Brand Name | Jexiwe |
| Model | CY3001 |
| Communication Interface | OBD-II |
| Item Type | Code Readers & Scan Tools |
| Certification | CE |
| Origin | Mainland China |
| Display | 1.86" Full Color LCD-TFT Screen |
| Dimensions (approx.) | Width: 6.86 cm (2.70 inch), Length: 11.89 cm (4.68 inch) |
| Package Weight (approx.) | 0.181 kg |
| Package Dimensions (approx.) | 20 cm x 17 cm x 3 cm |
| Battery | Not Included (Device powered via OBD-II port) |

4. Setup
- Locate the OBD-II Port: The OBD-II port is typically located under the dashboard on the driver's side of the vehicle. Refer to your vehicle's owner's manual if you cannot find it.
- Connect the Tool: With the vehicle's ignition off, firmly plug the 16-pin OBDII connector of the CY3001 tool into the vehicle's OBD-II port.
- Turn on Ignition: Turn the vehicle's ignition to the 'ON' position (do not start the engine unless instructed by a specific diagnostic procedure). The tool will power on automatically.
- Language Selection (if needed): If this is your first use or you wish to change the language, navigate to the 'Tool Setup' menu and select 'Language'. The device supports English, Français, Español, Deutsch, Русский, and Italiano.

5. Operating Instructions
5.1 Navigating the Menus
Use the directional buttons (Up, Down, Left, Right) to navigate through the menu options on the screen. Press the 'OK' button to confirm a selection or enter a submenu. Use the 'Back' button to return to the previous screen.
5.2 Main Menu Options
Upon powering on, the device will display the Main Menu:
- Diagnose: Accesses the primary diagnostic functions (Read Codes, Erase Codes, Live Data, etc.).
- DTC Lookup: Allows you to manually enter a DTC and view its definition.
- Tool Setup: Configures device settings such as language.

5.3 Performing a Diagnostic Scan
- From the Main Menu, select 'Diagnose' and press 'OK'.
- The Diagnostic Menu will appear. Select the desired function (e.g., 'Read Codes') and press 'OK'.
- The tool will communicate with the vehicle's ECU and display any detected DTCs.
- To clear codes, select 'Erase Codes' from the Diagnostic Menu and confirm. This will turn off the Check Engine Light (MIL).
5.4 Understanding Visual Indicators
The device features three visual indicators to provide quick feedback on your vehicle's status:
- Green: Indicates good condition, all systems are functioning normally.
- Orange: Suggests an issue that needs your attention, but may not be critical.
- Red: Signals a critical issue that requires immediate action.

6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the tool in a clean, dry environment away from extreme temperatures and direct sunlight.
- Cable Care: Avoid bending or twisting the OBDII cable excessively to prevent damage.
7. Troubleshooting
- No Power: Ensure the OBDII connector is firmly plugged into the vehicle's port and the vehicle's ignition is in the 'ON' position. The device draws power directly from the vehicle.
- Link Error: If the tool displays a 'Link Error', verify that the ignition is on and the connector is secure. Try connecting to another OBD2-compliant vehicle to rule out a vehicle-specific issue.
- Codes Not Clearing: After performing repairs, ensure the ignition is on but the engine is off when attempting to clear codes. Some codes may reappear if the underlying issue has not been resolved.
- Screen Unresponsive: If the screen freezes, disconnect the tool from the vehicle, wait a few seconds, and reconnect it.
8. User Tips
- Vehicle Compatibility: Ensure your vehicle is OBD2 compliant (most vehicles manufactured in the US after 1996, in the EU after 2001 for petrol and 2004 for diesel).
- Read Manual First: Always refer to your vehicle's owner's manual for specific information regarding its OBD-II system.
- Diagnostic Context: While the tool provides codes, understanding the context of the code and performing further inspection is often necessary for accurate diagnosis and repair.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.