The On-Board Diagnostics II (OBD2) port is a standardized interface in modern vehicles, including Hyundai models, that allows access to the car’s internal computer systems. This port is crucial for diagnosing problems, monitoring performance, and ensuring your vehicle is running optimally. Understanding the Hyundai Obd2 Pinout is the first step for anyone looking to perform DIY diagnostics or use professional scan tools effectively. This article will delve into the specifics of the Hyundai OBD2 pinout, its functions, and how to use this information for vehicle maintenance and repair.
The OBD2 port, also known as the Data Link Connector (DLC), is typically located within easy reach inside the cabin of your Hyundai, often under the dashboard on the driver’s side. It’s a 16-pin connector that provides a standardized way to interface with your vehicle’s Engine Control Unit (ECU) and other modules. Each pin in this connector is assigned a specific function, allowing for communication between diagnostic tools and the vehicle’s systems.
Here is a detailed Hyundai OBD2 pinout diagram and explanation:
| Pin | Signal | Description |
|---|---|---|
| 1 | K-Line | Gearbox diagnostic communication line |
| 2 | K-Line | ABS diagnostic communication, BUS+ Line |
| 4 | CGND | Chassis Ground |
| 5 | SGND | Signal Ground |
| 6 | CAN High | CAN bus High (J-2284), used for ABS/ASR and other diagnostics |
| 7 | K-LINE | Engine and Gearbox diagnostic communication (ISO 9141-2 and ISO/DIS 14230-4) |
| 8 | K-Line | ABS diagnostic communication line |
| 9 | K-Line | Cruise Control diagnostic communication line |
| 10 | BUS-Line | Data Bus Line (Specific protocol may vary) |
| 12 | K-Line | Airbag diagnostic communication line |
| 14 | CAN Low | CAN bus Low (J-2284), Vehicle Speed Sensor (VSS) signal |
| 15 | ISO 9141-2 L-LINE | ISO 9141-2 and ISO/DIS 14230-4 L-Line communication |
| 16 | +12V | Battery Power (Vehicle Battery Voltage) |
Understanding these pins is crucial when using any OBD2 diagnostic tool. Pins 4 and 5 provide the necessary ground connections, while pin 16 supplies power to the diagnostic tool from the car battery. Pins 6 and 14 are for the CAN (Controller Area Network) bus, which is a standard communication protocol in modern vehicles, especially for systems like ABS and engine management. The K-lines (pins 1, 2, 7, 8, 9, 12) are used for various diagnostic communications based on the ISO 9141-2 and ISO 14230-4 protocols, commonly found in older OBD2 compliant Hyundai models.
Hyundai Accent 2013 OBD2 DLC port location and pinout diagram.
Hyundai OBD-2 Compatibility Across Models
Hyundai adopted OBD2 compliance across its vehicle lineup starting from the late 1990s, ensuring that their vehicles could be diagnosed using standardized tools. However, the specific OBD2 protocols and the extent of diagnostic capabilities can vary depending on the model and year of manufacture. Below is a compatibility list that, while not exhaustive, gives a good overview of Hyundai OBD2 compliance:
| Model | Engine | Year (starting from) | OBD-2 Protocol |
|---|---|---|---|
| Hyundai Accent | 1998 | ISO 14230-4, ISO 9141-2 | |
| 2000 | ISO 14230-4, ISO 9141-2 | ||
| Gasoline (94 HP) | 2000 | ||
| 1.5, Gasoline (90HP) | 2001 | ISO 9141 | |
| Gasoline (90 HP) | 2004 | ISO 9141-2 | |
| Gasoline (74 HP) | 1995 | ||
| Hyundai Atos | Gasoline (54 HP) | 1998 | ISO 9141/KW 0808 |
| 1.1, Gasoline (58HP) | 2004 | ISO 9141 | |
| Gasoline (62 HP) | 2005 | KW 1281 | |
| Hyundai Coupe | Gasoline (137 HP) | 2002 | |
| 2, Gasoline (138HP) | 2002 | KWP FAST | |
| 2.7 V6, Gasoline (167HP) | 2002 | KWP FAST | |
| 2, Gasoline (143HP) | 2005 | KWP FAST | |
| Hyundai Elantra | 1996 | ISO 14230-4, ISO 9141-2 | |
| Gasoline (106 HP) | 2001 | ISO 14230-4, ISO 9141-2 | |
| 2001 | ISO 14230-4, ISO 9141-2 | ||
| Gasoline (106 HP) | 2003 | ISO 14230-4 | |
| 2.0 CRDi, Diesel (112HP) | 2004 | ISO 9141 | |
| Hyundai Getz | Gasoline (85 HP) | 2004 | – |
| 1.5 CRDI, Diesel (80HP) | 2004 | ISO 9141 | |
| Diesel (81 HP) | 2005 | ISO 9141-2 | |
| Hyundai H1 Travel TQ | Diesel (168 HP) | 2009 | CAN |
| Hyundai I 30 cw | Diesel (114 HP) | 2010 | CAN |
| Hyundai I10 | 1.1 CRDI, Diesel (75HP) | 2009 | CAN 11bit (500kb) |
| 1.2, Gasoline (90HP) | 2010 | CAN 11bit (500kb) | |
| Hyundai I20 | 1.2, Gasoline (80HP) | 2011 | CAN 11bit (500kb) |
| Hyundai I30 | 1.6 HDi, Diesel (96HP) | 2008 | CAN 11bit (500kb) |
| 1.6 CRDi, Diesel (116HP) | 2008 | CAN 11bit (500kb) | |
| 1.8, Gasoline (150HP) | 2010 | CAN 11bit (500kb) | |
| Hyundai i30 Classic | 1,4 Liter, Gasoline (108 HP) | 2007 | CAN |
| Hyundai I30 CW | Diesel (121 HP) | 2010 | CAN |
| Diesel (114 HP) | 2010 | CAN | |
| Hyundai IX20 | 1.5 CRDI, Diesel (90HP) | 2011 | CAN 11bit (500kb) |
| 1.6, Diesel (115HP) | 2011 | CAN 11bit (500kb) | |
| Hyundai Lantra | Gasoline (113 HP) | 1995 | ISO 9141-2 |
| Hyundai Matrix | 2002 | ISO 14230-4, ISO 9141-2 | |
| 1.5 crdi, Diesel (82HP) | 2002 | ISO 9141 | |
| 1.5 CRDI, Diesel (75HP) | 2005 | ISO 9141 | |
| 1.6 GL, Gasoline (104 HP) | 2007 | ISO 9141-2 | |
| 1.5 CRDI, Diesel (100HP) | 2007 | ISO 9141 | |
| Hyundai Santa Fe | 2.4i, Gasoline or LPG (145HP) | 2001 | ISO 9141 |
| 2.0 CRDI, Diesel (110HP) | 2002 | ISO 9141 | |
| 2.0 CRDI, Diesel (125HP) | 2003 | ISO 9141 | |
| 2.0 CRDI, Diesel (150HP) | 2003 | ISO 9141 | |
| Diesel (112 HP) | 2004 | ||
| Hyundai Santa Fe SM | Gasoline (143 HP) | 2001 | ISO 14230-4, ISO 9141-2 |
| Hyundai Sonata | Gasoline (159 HP) | 2000 | ISO 9141-2 |
| 2.7 V6, Gasoline (173HP) | 2002 | KWP FAST | |
| Hyundai Tiburon | 1997 | ISO 14230-4, ISO 9141-2 | |
| Hyundai Trajet | Gasoline (171 HP) | 2002 | |
| 2.0 CRDI, Diesel (112HP) | 2003 | ISO 9141 | |
| Gasoline (139 HP) | 2004 | – | |
| Gasoline (141 HP) | 2005 | ||
| 2.7 V6, Gasoline (171 HP) | 2001 | ISO 9141-2 | |
| Hyundai Tucson | 2.0 CRDI, Diesel (112HP) | 2005 | KWP FAST |
| CRDI, Diesel (136HP) | 2006 | CAN 11bit (500kb) | |
| 2.0 CRDi, Diesel (140HP) | 2006 | CAN 11bit (500kb) | |
| Hyundai XG 30 | Gasoline (186 HP) | 2000 | |
| Gasoline (186 HP) | 2001 | ISO 9141-2 | |
| Hyundai XG25 | 2.5, Gasoline (163HP) | 2001 | KWP FAST |
| Hyundai XG350 | 3.5, Gasoline (145HP) | 2003 | ISO 9141 |
* Note: ’08 iLoad manual has VSS at pin 3. Always refer to your vehicle’s specific manual for the most accurate information.
This compatibility list highlights the variety of OBD2 protocols used in Hyundai vehicles over the years. ISO 9141 and ISO 14230 are older protocols, while CAN bus became more prevalent in later models. Knowing the protocol is important to ensure your diagnostic tool is compatible with your specific Hyundai vehicle.
OBD2 Cable Types for Hyundai Diagnostics
To connect to your Hyundai’s OBD2 port, you’ll need an appropriate OBD2 cable and potentially a scan tool or adapter that interfaces with your computer or mobile device. There are several types of OBD2 cables available, each designed for different communication protocols:
- OBD-2 ISO 9141-2 Cable: This simple serial cable is designed for vehicles using the ISO 9141-2 and ISO 14230-4 (KWP2000) protocols. Many older Hyundai models in the compatibility list above utilize these protocols. OBD-2 ISO 9141-2 cable scheme
- OBD-2 J1850 PWM/VPW Cable: While less common in Hyundai vehicles, some older systems might use J1850 protocols. This type of cable is designed for those systems. OBD-2 J1850 cable scheme
- OBD-2 Universal Diagnostic Cable: For maximum compatibility, a universal cable supports multiple protocols including ISO 15765-4 CAN, SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4, and SAE J1939. This is often the best choice for workshops dealing with a wide range of vehicles. OBD-2 universal cable scheme
Choosing the correct cable and ensuring compatibility with your diagnostic tool and Hyundai model is crucial for successful vehicle diagnostics. Always double-check your vehicle’s year, model, and the supported OBD2 protocol before purchasing any diagnostic equipment.
Conclusion
Understanding the Hyundai OBD2 pinout is essential for anyone involved in Hyundai vehicle maintenance and repair, from DIY enthusiasts to professional mechanics. This guide provides a comprehensive overview of the pin functions, compatibility across Hyundai models, and the types of OBD2 cables available. By utilizing this information, you can effectively diagnose your Hyundai and keep it running smoothly for years to come. Remember to always consult your vehicle’s service manual for the most accurate and model-specific diagnostic information.
