1. Product Overview
The HYL3.20 Dual CAN Bus Decoder is designed to facilitate the installation of aftermarket Android head units in compatible vehicles. Its primary function is to read and interpret vehicle CAN bus data, providing essential information for the proper functioning, debugging, and feature adaptation of your Android head unit. This model features dual CAN interfaces, expanding upon the HYF2.20 by allowing connection to both the car instrument CAN and OBD CAN, enabling advanced functions such as reversing line display and door status indication.

Figure 1: Hiworld HYL3.20 CAN Bus Decoder
2. Specifications
| Model Name | HYL3.20 |
| Brand | pinmany |
| Manufacturer | Hiworld |
| Item Type | Cables, Adapters & Sockets |
| Special Features | CAN Bus Data Converter, Dual CAN Interface |
| Operating Voltage | 9V–16V DC (Nominal 12V) |
| Item Weight | 40g |
| Material | Black plastic shell |
| Origin | Mainland China |
| PCB Included | Yes |
| Connector Type | 16-pin, 20-pin PH2.0 |
| Operating Temperature | -30 °C to +70 °C |
| Dimensions (L×W×H) | 75mm × 45mm × 17mm |
| Communication Method | UART (with Android head unit) |
| Suitable Head Units | Android 7", 8", 9", 10" and similar sizes |
| Compatible Car Models |
|

Figure 2: HYL3.20 Core Parameters and Compatible Models
3. Package Contents
Depending on your purchase option, the package may include:
- 1x Hiworld HYL3.20 CAN Bus Decoder Box
- 1x OBD Wiring Harness Adapter (approx. 150cm length)
Note: This product typically includes the OBD wiring harness. Other specific adapter harnesses for your vehicle's head unit may need to be prepared separately. The HYL3.20 is compatible with Hiworld HYF2.20 cable harnesses.

Figure 3: HYL3.20 CAN Bus Decoder and OBD Wire Harness
4. Setup and Installation
4.1. Electrical & Wiring Requirements
- Operating Voltage: Ensure your vehicle's voltage is within 9V–16V DC to prevent damage.
- Wiring Accuracy: Strictly follow the pin definition diagrams provided. This product can directly replace Hiworld HYF2.20 decoders. Do NOT attempt to replace decoders of different brands or models directly.
- Warranty: Damage resulting from reverse connection, incorrect insertion, or wiring not conforming to the pin definitions will void the warranty.
4.2. Connecting the CAN Bus Decoder
Connect the 16-pin and 20-pin plugs from your vehicle's wire harness into the corresponding sockets on the CAN Bus Decoder Box. Ensure a secure connection for both plugs.

Figure 4: Connecting Cable Adapters to the CAN Bus Box
4.3. Connecting the OBD Wiring Harness
The OBD wiring harness enables additional functions like reversing line and door status display. Follow these steps to connect it:
- Locate the 20-pin harness plug of the cable adapter currently in use.
- Align the green wire terminal (CAN-H) and insert it into pin 14 (PIN14) of the 20-pin plug.
- Align the yellow wire terminal (CAN-L) and insert it into pin 18 (PIN18) of the 20-pin plug.
- Insert the OBD connector completely into your vehicle's original OBD diagnostic interface.

Figure 5: OBD Wiring Harness Connection Diagram
Explanation: This product includes one OBD wiring harness. Adding OBD CAN connection can achieve reverse line and door status display functions.
4.4. Pin Definitions
Refer to the following diagram for detailed pin definitions of the 20-pin and 16-pin connectors. Ensure all connections are made according to these definitions.

Figure 6: HYL3.20 Pin Definitions
4.5. Android Head Unit Settings
After completing the physical wiring, you must configure your Android head unit to recognize the CAN Bus Decoder. The exact steps may vary slightly depending on your head unit's manufacturer and software version. Consult your head unit vendor if you encounter difficulties.
- Enter Settings: Navigate to the main settings menu on your Android head unit. Look for "Car Settings" or a similar option.
- Enter Factory Settings: Within Car Settings, you may need to access "Factory Settings" or "Factory Mode". This often requires a password. Common passwords include: 3368, 1617, 8317, 8888. If these do not work, contact the seller of your Android radio for the correct password.
- Enter CAN Bus Settings: Once in Factory Settings, locate "CAN Bus Settings" or "CAN Related Settings".
- Select Manufacturer and Model:
- Select "Hiworld" as the CAN Bus Box manufacturer.
- Select the correct car model and year from the list (e.g., HYUNDAI_KIA_W06(2015-2016 Tucson)).
- Save and Reboot: After selecting the correct settings, save your changes and reboot the Android head unit.

Figure 7: Android Head Unit CAN Bus Setup (Part 1)

Figure 8: Android Head Unit CAN Bus Setup (Part 2)
If your Android head unit cannot find the corresponding vehicle name in the CANBUS settings, try selecting a similar vehicle name, or contact the seller of your Android head unit to obtain an APP update.
5. Operating the CAN Bus Decoder
Once correctly installed and configured, the HYL3.20 CAN Bus Decoder operates automatically in conjunction with your Android head unit. It continuously reads and translates vehicle data from the CAN bus, enabling various functions on your aftermarket head unit that rely on this information.
- Steering Wheel Controls: Enables the functionality of your vehicle's original steering wheel controls with the new head unit.
- Reverse Camera Integration: Provides signals for automatic camera activation and dynamic parking lines (if supported by your vehicle and head unit).
- Door Status Display: Allows the head unit to display the open/closed status of vehicle doors.
- Vehicle Information: May provide other vehicle-specific data to the head unit, depending on the vehicle's CAN bus capabilities and head unit features.
The communication between the decoder and the Android head unit is via UART. Ensure your head unit has a compatible UART interface for full functionality.
6. Care and Maintenance
The HYL3.20 CAN Bus Decoder is designed for durability and requires minimal maintenance. To ensure its longevity and optimal performance:
- Keep Dry: Avoid exposing the decoder to moisture or liquids.
- Temperature: Operate within the specified temperature range (-30 °C to +70 °C). Extreme temperatures can affect performance and lifespan.
- Secure Connections: Periodically check that all wiring connections are secure and free from corrosion.
- Cleaning: If necessary, gently wipe the exterior with a dry, soft cloth. Do not use harsh chemicals or abrasive cleaners.
- Avoid Physical Damage: Protect the device from impacts or excessive vibration.
7. Troubleshooting
If you encounter issues with your HYL3.20 CAN Bus Decoder, refer to the following common problems and solutions:
- No Data Recognition / Functions Not Working:
- Ensure the CANBUS function is enabled in your Android head unit settings.
- Verify that the correct vehicle model and year are selected in the head unit's CANBUS settings.
- Check all wiring connections for proper insertion and security.
- If the vehicle model is not listed, try selecting a similar model or contact your Android head unit vendor for a software update.
- Dynamic Reverse Lines Not Working:
- On your Android head unit, ensure that the "static lines" switch for the reverse camera is turned OFF. Dynamic lines and static lines can sometimes conflict.
- PAS (Parking Assist System) or Door Opening Functions Not Working:
- Ensure the OBD wiring harness is correctly connected to both the 20-pin plug and the vehicle's OBD interface.
- Try installing the latest Canvas update file for your Android head unit, if available.
- Compatibility Issues:
- Product functions depend on the vehicle's multimedia CAN node data. Without corresponding data, certain functions cannot be realized.
- Due to variations in vehicle brands, models, and years, compatibility may differ. If you are unsure, contact customer support for confirmation.
- Device Not Powering On:
- Verify that the vehicle's operating voltage is within the 9V–16V DC range.
- Check for any reverse polarity connections or short circuits.
8. User Tips
Based on feedback from other users, here are some helpful tips:
- Dynamic Reverse Lines: If your dynamic reverse lines are not appearing or functioning correctly, check your Android head unit's settings and ensure that any "static lines" option for the reverse camera is disabled.
- Parking Assist and Door Status: For proper operation of Parking Assist System (PAS) and door status display, ensure your OBD wiring is correctly installed. If issues persist, look for and install any available Canvas update files for your specific Android head unit.
9. Compatibility Notice
- The functionality of this product is dependent on the vehicle's multimedia CAN node data. If the corresponding data is not present, certain functions cannot be realized.
- Due to variations across vehicle brands, models, and manufacturing years, there may be differences in compatibility and adaptability. If you are uncertain about compatibility, please contact customer service for confirmation before purchase.
- This product communicates with the Android head unit via UART. Android head units without a UART interface are not compatible.
10. Disclaimer
This manual will be updated periodically with product upgrades. In cases where the actual product operation differs from the manual, the actual function of the product shall prevail. The manufacturer reserves the right of final interpretation of this manual and product features.
11. Warranty and Support
For warranty information, technical support, or any inquiries regarding your HYL3.20 CAN Bus Decoder, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase for warranty claims.
Damage caused by improper installation, misuse, or failure to follow the instructions in this manual is not covered under warranty.