1. Overview
The KW105 is a simple, powerful, and portable OBD 24V to 12V adapter and signal detector. It is specifically designed for heavy-duty trucks and features 8 LED lights to detect OBD signals, providing essential diagnostic information.
2. Product Structure
Familiarize yourself with the components of your KW105 adapter:
- OBD Male Connector: Connects to the vehicle's OBD-II port.
- Output 12V or 24V Switch: Allows direct output without 12V conversion, functioning as a breakout box.
- Output Voltage Display: Shows the current output voltage.
- Input Voltage Display: Shows the current input voltage from the vehicle.
- OBD Female Head: For connecting diagnostic tools.
- DC Power Input Interface (4mm copper pillar): For external power supply if needed.
- Signal Indicator Lights: LEDs that illuminate to indicate active signals on specific pins.
3. Product Functions
The KW105 adapter offers four primary functions:
- Voltage Conversion: Converts heavy truck diagnostic interfaces from 24V to 12V, making it compatible with 12V diagnostic tools such as X431 easydiag 3.0, easydiag 2.0, Golo Carcare 3, ICARSCAN golo technician box, and ThinkCar diagnostic Bluetooth heads for truck diagnosis.
- K-Line Protocol Conversion: Converts the truck's 24V K-Line communication protocol to 12V K-Line, ensuring that 12V diagnostic heads are not damaged when used with 24V systems.
- OBD Breakout Box: Provides access to pins 5, 6, 7, 12, 13, 14, and 15 via 4mm copper pillar connectors from the OBD interface, allowing for signal monitoring and testing.
- Signal Monitoring: Equipped with signal indicator lights for pins 5, 6, 7, 12, 13, 14, and 15, enabling users to monitor the presence of protocol signals on these pins.
4. Setup Instructions
Follow these steps to set up your KW105 adapter:
- Locate the OBD-II Port: In your heavy-duty truck, locate the standard OBD-II diagnostic port. This is typically found under the dashboard on the driver's side.
- Connect the KW105: Plug the OBD male connector (1) of the KW105 adapter firmly into the truck's OBD-II port.
- Verify Power: Once connected, the input voltage display (4) on the KW105 should illuminate, showing the truck's voltage (e.g., 24.1V).
- Select Output Voltage (if applicable): If you intend to use a 12V diagnostic tool, ensure the 12V/24V output switch (2) is set to 12V. If using the breakout box functionality or a 24V compatible tool, set it to 24V or bypass conversion.
- Connect Diagnostic Tool: Plug your 12V or 24V diagnostic tool into the OBD female head (5) of the KW105 adapter.
- External Power (Optional): If your diagnostic tool requires additional power or if you are using the breakout box for specific tests, you may connect an external DC power supply to the DC power input interface (6).
5. Operating Instructions
Once the KW105 is set up, you can begin operation:
- Monitor Voltage Displays: The input voltage display (4) shows the voltage from the truck, and the output voltage display (3) shows the voltage being supplied to your diagnostic tool. Ensure these readings are within expected ranges for your equipment.
- Observe Signal Indicator Lights: The signal indicator lights (7) for pins 5, 6, 7, 12, 13, 14, and 15 will illuminate when a signal is detected on the corresponding pin. This helps confirm active communication protocols.
- Using as a Breakout Box: For advanced diagnostics, connect test leads to the 4mm copper pillar connectors corresponding to pins 5, 6, 7, 12, 13, 14, and 15. This allows direct access to the OBD signals for external measurement or analysis.
- Diagnostic Tool Operation: Operate your connected diagnostic tool as per its own instructions. The KW105 acts as an intermediary, providing the correct voltage and signal breakout.
6. Specifications
| Feature | Specification |
|---|---|
| Work Voltage | 12V-30V |
| Maximum Load | 1.5A |
| Voltage Display | 2 x 3-digit LED (Resolution: 0.1 V) |
| Banana Socket Outputs | 8 outputs x 4.0 mm with LED lamp indications |
| Protocols Detected | ISO9141-2, DIS/ISO14230-4, CAN bus (12284) (SAE11939) |
| Item Weight | 0.6 kg |
| Item Dimensions (L x W x H) | 20cm x 8cm x 2.8cm |
| External Testing Certification | CCC |
| Power (W) | 3W |
| Material | Plastic |
| Hardware Version | V2.3 |
| Software Version | V3.5 |
7. User Tips
- Always verify the input and output voltage readings on the KW105 before connecting any sensitive diagnostic equipment to prevent damage.
- Utilize the signal indicator lights to quickly confirm active communication on specific OBD pins, which can save time during troubleshooting.
- When using the breakout box functionality, ensure proper connections to the 4mm copper pillars to avoid short circuits or incorrect readings.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to KW105 | Loose connection to OBD port; Vehicle's OBD port is faulty. | Ensure the KW105 is securely plugged into the OBD port. Check the vehicle's OBD port with another device if possible. |
| Diagnostic tool not receiving power/signal | Incorrect output voltage setting; Loose connection between KW105 and diagnostic tool; Faulty diagnostic tool. | Verify the 12V/24V switch setting. Ensure the diagnostic tool is securely connected. Test the diagnostic tool independently. |
| Signal indicator lights not illuminating | No active communication on pins; Incorrect protocol selected by diagnostic tool; Faulty KW105. | Confirm the vehicle is powered on and attempting communication. Check diagnostic tool settings. If issues persist, contact support. |
| Inaccurate voltage readings | Electrical interference; Internal fault. | Ensure no other electrical devices are causing interference. If readings are consistently inaccurate, contact support. |
9. Maintenance
To ensure the longevity and optimal performance of your KW105 adapter, follow these maintenance guidelines:
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the KW105 in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping the device or subjecting it to strong impacts. Protect the connectors from dust and moisture when not in use.
- Cable Care: Do not bend or crimp the cables excessively. Always grasp the connector when plugging or unplugging, not the cable itself.
10. Warranty and Support
For technical support, warranty inquiries, or any questions regarding your KW105 adapter, please contact Kawish Technology Co., Ltd using the information below:
- Company: Shen Zhen Kawish Technology Co., Ltd
- Address: B7003, shanghui Building, Min Zhi street, Longhua District, Shenzhen, Guangdong, China
- Telephone: +8618312509733
- Whatsapp: +8618312509733
- Skype: sale_lumeitech
- Email: info@szkawish.com
- Website: www.szkawish.com
An additional user manual in PDF format can be found here: KW105 User Manual (PDF)
