Introduction
The KAWISH KW105 is a versatile and portable OBD 24V to 12V adapter and signal detector designed for heavy-duty trucks. It features 8 LED lights to detect OBD signals and offers multiple functionalities to facilitate vehicle diagnostics. This device allows for the safe use of 12V diagnostic tools on 24V truck systems, converts K-Line communication protocols, provides breakout access to specific OBD pins, and monitors signal activity.
Product Structure and Components
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 of 12V or 24V, enabling use as a breakout box without voltage conversion.
- Output Voltage Display: Shows the voltage being supplied to the connected diagnostic tool.
- Input Voltage Display: Shows the voltage received from the vehicle's OBD-II port.
- OBD Female Head: Connects to your diagnostic tool.
- DC Power Input Interface: For external power supply if needed (e.g., for breakout box functions without vehicle power).
- Signal Indicator Lights: LEDs that illuminate to indicate activity on specific OBD communication lines (pins 5, 6, 7, 12, 13, 14, 15).
Setup
Follow these steps to set up your KW105 adapter:
- Connect to Vehicle: Locate the OBD-II diagnostic port in your heavy-duty truck. Plug the KW105's OBD male connector (1) firmly into the vehicle's OBD-II port.
- Power On: Once connected, the input voltage display (4) should show the vehicle's voltage (typically around 24V for heavy trucks).
- Select Output Voltage: Use the 12V/24V switch (2) to select the appropriate output voltage for your diagnostic tool. If your tool requires 12V, ensure the switch is set to 12V. If you are using the device as a breakout box and your tool can handle 24V, you can select 24V.
- Connect Diagnostic Tool: Plug your diagnostic tool (e.g., X431 easydiag, Golo Carcare, ICARSCAN, ThinkCar diagnostic Bluetooth head) into the KW105's OBD female head (5).
- Verify Connection: The output voltage display (3) should show the selected output voltage. The signal indicator lights (7) will illuminate when communication is active on their respective pins.
Operating Instructions
The KW105 adapter offers four primary functions:
1. 24V to 12V Conversion for Diagnostic Tools
This function allows you to safely use 12V diagnostic equipment on 24V heavy-duty trucks.
- Connect the KW105 to the 24V heavy truck's OBD port.
- Set the 12V/24V switch to '12V'.
- Connect your 12V diagnostic tool (e.g., X431 easydiag 3.0, Golo Carcare 3, ICARSCAN golo technician box, ThinkCar diagnostic Bluetooth head) to the KW105's OBD female head.
- The KW105 will convert the 24V power from the truck to 12V, protecting your diagnostic tool from overvoltage.
2. K-Line Protocol Conversion
The KW105 can convert 24V K-Line communication protocols to 12V K-Line, preventing damage to 12V diagnostic heads that are not designed for 24V K-Line signals.
- Ensure the KW105 is connected and powered as described in the Setup section.
- When a 12V diagnostic tool requiring K-Line communication is connected, the KW105 automatically adjusts the K-Line signal voltage.
3. OBD Breakout Box Functionality
The KW105 provides direct access to critical OBD pins for testing and monitoring.
- Pins 5 (GND), 6 (J2284 CAN-H), 7 (K Line), 12 (J1939), 13 (J1939), 14 (J2284 CAN-L), 15 (L Line), and 16 (Power Out 12V or 24V) are broken out to 4mm copper pillar connectors.
- You can connect test leads or other equipment to these copper pillars to directly measure signals or inject signals for advanced diagnostics.
- The 12V/24V switch can be used to provide direct vehicle voltage (24V) or converted 12V to pin 16 for external devices.
4. Signal Monitoring
The integrated LED indicators allow for real-time monitoring of communication lines.
- Observe the signal indicator lights (7) for pins 5, 6, 7, 12, 13, 14, and 15.
- An illuminated or blinking LED indicates active communication or signal presence on that specific pin. This helps in quickly identifying communication issues or verifying protocol activity.
- The input (4) and output (3) voltage displays provide immediate feedback on power status.
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. Ensure no liquids enter the device.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Keep it protected from dust and moisture.
- Cable Care: Inspect the OBD connectors and cables regularly for any signs of wear, damage, or corrosion. Replace if necessary.
- Avoid Drops: Handle the device with care to prevent physical damage from drops or impacts.
Troubleshooting
If you encounter issues with your KW105 adapter, refer to the following troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/displays off | Loose connection to vehicle OBD port; Vehicle battery low or dead. | Ensure the KW105 is securely plugged into the vehicle's OBD port. Check the vehicle's battery status. |
| Diagnostic tool not communicating | Incorrect 12V/24V switch setting; Loose connection to diagnostic tool; Vehicle communication issue; Faulty diagnostic tool. | Verify the 12V/24V switch is set correctly for your diagnostic tool. Ensure the diagnostic tool is securely connected. Check the signal indicator lights on the KW105 for activity. Try the diagnostic tool on another vehicle if possible. |
| Incorrect voltage displayed | Poor connection; Internal fault. | Check all connections. If the issue persists, contact customer support. |
| Signal indicator lights not illuminating | No communication on that line; Vehicle not powered on; Faulty KW105. | Ensure the vehicle's ignition is on. Verify the diagnostic tool is attempting communication. Check for vehicle-specific communication issues. |
Specifications
| Feature | Specification |
|---|---|
| Brand Name | Kawish |
| Model Name | KW105 |
| Item Type | Engine Analyzer Accessory |
| Special Features | OBD Breakout Box, 24V to 12V Adapter, OBD Signal Detection |
| Hardware Version | V2.3 |
| Software Version | V3.5 |
| Voltage Input | Up to 30V |
| Power (W) | 3W |
| Material | Plastic |
| Item Length | 20 cm |
| Item Width | 8 cm |
| Item Height | 2.8 cm |
| Item Weight | 0.2 kg |
| External Testing Certification | CCC |
| Batteries Included | No |
| High-concerned chemical | None |
User Tips
- Always ensure the vehicle's ignition is in the 'ON' position (engine off or running, depending on the diagnostic procedure) when performing diagnostics.
- Double-check the 12V/24V switch setting before connecting your diagnostic tool to prevent damage.
- When using the breakout box functionality, ensure proper electrical safety precautions are followed, especially when probing live circuits.
- Keep the device clean and free from debris to ensure reliable connections and clear display readings.
Warranty & Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
An additional user manual in PDF format may be available for download. Please refer to the following link for more detailed documentation: KW105 User Manual (PDF)