Introduction
The UDIAG CR720 is a versatile 2-in-1 diagnostic tool designed for automotive enthusiasts and professional mechanics. It combines comprehensive OBD2 diagnostic functions with a robust 6V/12V battery tester, allowing users to quickly identify and resolve vehicle issues. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your CR720 device.
Product Overview
Key Features
- Comprehensive OBD2 Diagnosis: Supports 10 modes of OBD2 inspection, including reading/erasing fault codes, turning off engine check light, on-board monitor test, EVAP system test, O2 sensor monitor, live data stream, freeze frame data, and vehicle information reading.
- Battery Voltage Test Function: Directly perform battery voltage measurement, monitoring, and performance testing for 6V and 12V batteries.
- Wide Compatibility: Works on most vehicles sold in America, Europe, and Asia produced after 1996, supporting all OBDII protocols (CAN, ISO14230-4 KWP200, ISO9141-2, J1850 PWM & VPW).
- Multi-Language Support: Supports 13 languages, including English, Japanese, Spanish, German, French, Italian, Polish, and more.
- User-Friendly Design: Features a color screen, easy-to-operate silicone rubber buttons, and a plug-and-play design that requires no external battery.
Setup
Unpacking and Initial Inspection
Upon receiving your UDIAG CR720, carefully open the packaging and inspect the contents. Ensure all items listed in the 'What's in the Box' section are present and undamaged. If any components are missing or damaged, contact customer support immediately.
What's in the Box:
- UDIAG CR720 OBD2 Scanner
- User Manual (this document)
Connecting to Your Vehicle
The CR720 is designed for plug-and-play operation and is powered directly from your vehicle's OBDII port. No external battery or charging is required.
- Locate the 16-pin Data Link Connector (DLC) in your vehicle. This port is typically found under the dashboard on the driver's side.
- Ensure the vehicle's ignition is in the 'OFF' position before connecting the scanner.
- Firmly plug the CR720's OBDII cable into the vehicle's DLC.
- Turn the vehicle's ignition to the 'ON' position (do not start the engine unless instructed by a specific test procedure). The CR720 will power on automatically.
Operating Instructions
The CR720 features a color screen and intuitive button layout for easy navigation.
Navigating the Menu
- Use the UP and DOWN arrow buttons to scroll through menu options.
- Press the OK button to confirm a selection or enter a submenu.
- Press the EXIT button to return to the previous screen or exit a function.
- The BAT button provides quick access to battery testing functions.
OBD2 Diagnostic Functions
The CR720 offers a full suite of OBD2 diagnostic capabilities to help you understand and clear engine-related issues.
- From the main menu, select Diagnosis. The scanner will attempt to link to the vehicle's ECU.
- Once connected, you will see a list of diagnostic options:
- Read Codes: Displays Diagnostic Trouble Codes (DTCs) stored in the vehicle's computer.
- Erase Codes: Clears DTCs from the vehicle's computer and turns off the Check Engine Light (MIL). Ensure the underlying issue is resolved before clearing codes.
- Live Data Stream: Displays real-time data from the vehicle's sensors, such as engine RPM, vehicle speed, O2 sensor readings, and more.
- Freeze Frame Data: Shows a snapshot of sensor readings at the moment a fault code was set, providing context for the issue.
- I/M Readiness: Checks the status of emission-related monitors to determine if the vehicle is ready for an emissions test.
- O2 Sensor Test: Retrieves O2 sensor monitor test results for the most recently completed tests.
- On-Board Monitor Test: Accesses the results of on-board diagnostic monitoring tests for specific components/systems.
- EVAP System Test: Initiates a leak test for the vehicle's EVAP system.
- Vehicle Information: Retrieves the vehicle's VIN (Vehicle Identification Number), Calibration ID (CALID), and Calibration Verification Number (CVN).
- DTC Lookup: Allows you to manually enter a DTC and view its definition.
Battery Test Functions
The CR720 can perform various tests on your vehicle's 6V or 12V battery.
- Press the BAT hotkey button from any screen, or select Battery from the main menu.
- You will be presented with the following options:
- Battery Measurement: Displays the current voltage of the vehicle's battery.
- Battery Monitoring: Provides real-time graphical monitoring of battery voltage over time.
- Battery Life: Evaluates the overall health and estimated remaining life of the battery.
Maintenance
To ensure the longevity and optimal performance of your UDIAG CR720, follow these maintenance guidelines:
- Cleaning: Use a soft, damp cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a dry, cool environment away from direct sunlight and extreme temperatures.
- Cable Care: Avoid bending or crimping the OBDII cable excessively. Store the cable neatly to prevent damage.
- Software Updates: Periodically check the official udiag website for software updates. Keeping the firmware updated ensures compatibility with newer vehicles and improved functionality.
Troubleshooting
If you encounter issues while using your UDIAG CR720, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Loose connection to DLC; Vehicle ignition not ON; Blown fuse in vehicle's OBDII circuit. | Ensure cable is firmly connected. Turn ignition to 'ON'. Check vehicle's fuse box for a blown fuse related to the OBDII port. |
| Linking error / Cannot connect to vehicle. | Incorrect protocol detected; Vehicle not OBDII compliant; Faulty DLC. | Verify vehicle is OBDII compliant (1996+ US, 2001+ EU, 2008+ Asia). Try connecting to another OBDII compliant vehicle. Consult a professional if DLC is suspected faulty. |
| Codes cannot be cleared. | Underlying fault still present; Ignition not ON. | Ensure the root cause of the fault code has been repaired. Turn ignition to 'ON' (engine OFF) before attempting to clear codes. |
| Screen is blank or unresponsive. | Internal cable loose (rare); Software issue. | Perform a hard reset by disconnecting and reconnecting the device. If persistent, contact customer support. |
For further assistance, please refer to the official udiag website or contact their customer support.
Specifications
| Attribute | Detail |
|---|---|
| Manufacturer | UDIAG |
| Brand | udiag |
| Model | CR720 |
| Item Weight | 5.9 ounces |
| Product Dimensions | 2.68 x 0.79 x 5.08 inches |
| Country of Origin | China |
| Operating System | Embedded System |
| Display Resolution | 128x64 |
Official Product Video
This video provides a visual demonstration of the UDIAG CR720 OBD2 Scanner Battery Tester, showcasing its features and operation.
Warranty and Support
UDIAG offers quality assurance for the CR720. Your satisfaction is a priority. Please contact customer service if you have any questions or concerns.
- Returns and Replacements: The product is eligible for 30-day return and replacement service.
- Contact Information: For support, please visit the official udiag website or their social media channels.
You can find more information and support on the UDIAG Facebook page.
