1. Introduction
The WOYO CTB007 PRO is a professional diagnostic tool designed for automotive technicians and enthusiasts. It functions as an OBD2 breakout box, CAN tester, and ECU testing tool, offering real-time voltage monitoring, built-in CAN termination resistors, and comprehensive connectivity for various diagnostic tasks. This manual provides detailed instructions for its setup, operation, and maintenance.
2. Key Features
- Universal Compatibility: Supports both 12V and 24V OBD systems for passenger cars and commercial vehicles.
- Real-time OBD-II Pin Voltage Monitoring: Features an LCD display for true RMS voltage (Vrms) monitoring across all 16 OBD-II pins.
- Visual Indicators: Green background for dynamic signals and status alerts for PIN 4&5 ground (GND) connectivity.
- Built-in 120Ω Resistance Switch: For HS-CAN (PIN6&14) and OEM/MS-CAN (PIN3&11), improving signal integrity during bench testing and single-ECU scenarios.
- Voltage Protection: Includes audible alarms for high and low voltage conditions (12V and 24V systems for PIN16) and reverse polarity protection. Maximum Load Current is 2.0A.
- Practical Design: Integrated 70cm/27.5-inch OBD2 extension cable and convenient external power input (9-32V DC or vehicle 12V battery).
- Battery Replacement Memory Saver: Helps maintain vehicle power during battery changes to preserve pre-programmed settings.
3. Package Contents
The WOYO CTB007 PRO package includes the following items:
- Main CTB007 PRO device
- Portable bag
- 5x ECU breakout leads
- Banana pins (various sizes/colors)
Image: WOYO CTB007 PRO device, portable bag, and various banana pins/leads.
4. Specifications
| Feature | Specification |
|---|---|
| Brand | WOYO |
| Power Source | 12V/24V Battery Powered or DC 9V-32V power supply |
| Product Dimensions (L x W x H) | 5.9"L x 2.7"W x 0.98"H |
| Screen Size | 2.9 Inches |
| Automotive Fit Type | Universal Fit |
| Item Weight | 1.05 Pounds |
| Input Voltage | 9.0-32.0VDC |
| Maximum Load | 2.0A |
| Resolution | 0.1V |
| Probes Socket | 16P*2.0mm |
| Overload Protection | Yes, PTC Fuse (Self-Healing) |
| Reverse Polarity Protection | Yes |
| Protocol Standard | PWM(J1850), VPW(J1850), ISO 9141-2, DIS/ISO 14230-4, CAN(J-2284) |
| Operating Temperature | -20°C-85°C, Humidity<70% |
| OBD Cable Length | 70cm (27.5inch) |
Image: WOYO CTB007 PRO specifications and dimensions.
5. Setup & Connection
5.1 Connecting to a Vehicle's OBD2 Port
- Locate the vehicle's OBD2 diagnostic port, typically found under the dashboard on the driver's side.
- Plug the CTB007 PRO's OBD2 connector into the vehicle's OBD2 port. Ensure a secure connection.
- The device will power on automatically, displaying real-time voltage data on its LCD screen.
Image: The CTB007 PRO connected to a vehicle's OBD2 port, ready for use.
5.2 Connecting to an ECU on Bench
For bench testing, the CTB007 PRO can be connected to an ECU using the provided ECU breakout leads and an external power supply.
- Connect the ECU breakout leads to the appropriate pins on the ECU.
- Connect the other end of the breakout leads to the corresponding banana pin sockets on the CTB007 PRO.
- Provide external power (9-32V DC) to the CTB007 PRO via the DC 5.5*2.1mm jack.
- Connect your diagnostic scanner or PC software to the CTB007 PRO's OBD2 port to view real-time data.
Image: The CTB007 PRO connected to an ECU on a bench for testing.
Video: Demonstrates the general usage of the CTB007 PRO, including connections and basic operations.
6. Operating Instructions
6.1 Real-time Vrms Monitoring
Once connected, the LCD display on the CTB007 PRO will show the real-time true RMS voltage (Vrms) for each of the 16 OBD-II pins. This allows for quick identification of active pins and voltage levels.
- Observe the digital readings for each pin.
- If a pin detects a pulse/waveform signal, its background color will flash green, indicating dynamic activity.
Image: Digital LCD display showing Vrms readings and PIN 16 voltage status.
6.2 CAN Termination Switches
The CTB007 PRO features built-in 120Ω resistor switches for CAN bus testing. These resistors are crucial for maintaining signal integrity in single-ECU or small bench network setups.
- Press the designated buttons to turn on/off the 120Ω resistor for HS-CAN (PIN6&14) or OEM/MS-CAN (PIN3&11).
- Use this feature when testing ECUs on a bench or in scenarios where the CAN bus requires proper termination.
Image: 120Ω CAN Termination Switches on the device.
Video: Demonstrates the CTB007 PRO's capability to support ECU or CAN BUS module testing on a bench.
6.3 Ground Signal Detection
The device can detect the vehicle's ground signal for PIN 4 (Chassis GND) and PIN 5 (Signal GND).
- If the ground signal is normal, the display will show 'GND'.
- If the ground signal is not normal or open, it will display 'OPEN'.
Image: Ground signal detection for PIN 4 & 5 and support for 1mm/2mm/4mm banana plugs.
6.4 Voltage Alarms
The CTB007 PRO provides audible alarms for voltage conditions on PIN 16 (Power+).
- Low-voltage (slow beep): Triggers if 12V systems are < 11.8 V or 24V systems are < 23.6 V.
- High-voltage (fast beep): Triggers if 12V systems are > 15.5 V or 24V systems are > 31 V.
6.5 Using with External Diagnostic Tools
The device supports connection with multimeters, oscilloscopes, and universal diagnostic scanners or PC/Laptop software for advanced analysis and data viewing.
Image: Connectivity diagram for the CTB007 PRO with various tools.
Video: Illustrates how the CTB007 PRO supports connection with a multimeter or oscilloscope for detailed voltage analysis.
Video: Shows the CTB007 PRO supporting vehicle OBD2 and scanner connections.
Video: Demonstrates using the WOYO PL007 in conjunction with the CTB007 PRO for CAN BUS mode testing.
7. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Storage: Store the CTB007 PRO in its portable bag in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid sharp bends or kinks in the cables to prevent damage.
8. Troubleshooting
- Device Not Powering On: Ensure the OBD2 connector is securely plugged into the vehicle's port or that an external 9-32V DC power supply is correctly connected. Check vehicle battery voltage.
- No Vrms Readings: Verify all connections are secure. Ensure the vehicle's ignition is on (or engine running, depending on the test).
- Incorrect Ground Readings (OPEN): Check the vehicle's ground connections for PIN 4 (Chassis GND) and PIN 5 (Signal GND).
- Audible Alarms: If high or low voltage alarms sound, check the vehicle's battery voltage and charging system.
- Communication Issues with Scanner: Ensure the scanner is properly connected to the CTB007 PRO's OBD2 port and that the scanner's software is up-to-date.
9. Warranty & Support
The WOYO CTB007 PRO comes with a 1-Year Manufacturer Warranty. For technical support, warranty claims, or additional product information, please visit the official WOYO store or contact their customer service.
Official WOYO Store: WOYO Store on Amazon