Understanding your Toyota’s OBD2 pinout is crucial for effective vehicle diagnostics and maintenance. The On-Board Diagnostics II (OBD2) system is a standardized system in modern vehicles, providing access to a wealth of information about your car’s health and performance. This article delves into the specifics of the Toyota Obd2 Pinout, ensuring you have a comprehensive guide for your diagnostic needs.
Delving into the Toyota OBD2 Connector Pinout
The OBD2 connector is typically located within two feet of the steering wheel, though the exact location can vary slightly by model. It’s a 16-pin connector, and each pin serves a specific purpose. Below is a detailed breakdown of the Toyota OBD2 pinout, outlining the function of each pin:
| Pin | Signal | Description |
|---|---|---|
| 2 | J1850 Bus+ | J1850 Positive Bus Line: Used in older Toyota models for communication. Part of the SAE J1850 communication protocol, which was prevalent in vehicles before the widespread adoption of CAN. |
| 4 | CGND | Chassis Ground: Provides a ground connection to the vehicle’s chassis. This is a crucial ground reference for the diagnostic tools and ensures signal integrity by minimizing electrical noise. |
| 5 | SGND | Signal Ground: Signal ground, distinct from chassis ground, is used as the ground reference for the communication signals within the OBD2 system. This separation helps to further reduce noise and ensure accurate data transmission between the vehicle’s ECU and the diagnostic tool. |
| 6 | CAN High | CAN High (CAN Bus High Line): This pin is part of the Controller Area Network (CAN) bus system, the backbone of modern automotive communication. CAN High and CAN Low (Pin 14) form a differential pair for robust and high-speed communication between various electronic control units (ECUs) in your Toyota. |
| 7 | SIL | K-Line (ISO 9141-2 & ISO 14230-4): Also known as the K-Line, this pin is used for communication according to the ISO 9141-2 and ISO 14230-4 protocols. In Toyota vehicles, it can be connected to various modules including the Occupant Detection ECU, Transponder Key ECU, Telematics System, and Tire Pressure Warning System via junction connectors. |
| 9 | TAC | Tachometer Signal (TAC): While its function can vary, in some Toyota models, this pin may output a tachometer signal. It’s potentially connected to the Engine Control Module (ECM) and could be used for diagnostic purposes related to engine speed, although its use in OBD2 diagnostics is less common than other pins. |
| 10 | J1850 Bus- | J1850 Negative Bus Line: Complementary to Pin 2, this is the negative line for the J1850 communication bus, used in older Toyota models. Together with J1850 Bus+, it facilitates data exchange in systems utilizing the J1850 protocol. |
| 12 | TS | Brake Actuator Assembly: This pin is specifically linked to the Brake Actuator Assembly. It’s likely used for diagnostics and communication related to the vehicle’s braking system, particularly in models equipped with advanced braking features like ABS or stability control. |
| 13 | TC | Timing Check (TC): Historically used for timing checks, this pin’s function in OBD2 can relate to ignition advance angle adjustments or retrieving ABS slow codes. While its direct diagnostic utility via standard OBD2 tools might be limited, it could be relevant for specific Toyota diagnostic procedures. |
| 14 | CAN Low | CAN Low (CAN Bus Low Line): Paired with CAN High (Pin 6), CAN Low completes the differential CAN bus communication. This differential signaling method enhances noise immunity and allows for reliable data transmission within the vehicle’s network. |
| 15 | L-LINE | L-Line (ISO 9141-2 & ISO 14230-4): The L-Line is another communication line used in ISO 9141-2 and ISO 14230-4 protocols, primarily in older vehicles. While less common in modern CAN-based systems, it was used alongside the K-Line (Pin 7) for diagnostic communication in earlier Toyota models. |
| 16 | +12V | Battery Power (+12V): Provides battery power to the OBD2 diagnostic tool. This pin ensures that your diagnostic scanner or tool receives the necessary power to operate when connected to the vehicle’s OBD2 port, even when the ignition is off in some cases (depending on tool design and vehicle). |
Pins not listed are typically not connected in standard OBD2 implementations.
Understanding the Toyota OBD2 pin connector is essential for car diagnostics.
Toyota OBD2 Compatibility Across Models
Toyota has implemented OBD2 across a wide range of its models, but the specific protocols and compatibility can vary depending on the year and model. The following table provides a non-exhaustive list of Toyota models and their OBD2 protocol compatibility. Note that this list is for general guidance and might not cover every specific variation or regional difference. Always consult your vehicle’s documentation for the most accurate information.
| Model | Engine | Year (starting from) | OBD-2 Protocol |
|---|---|---|---|
| Toyota Auris | Diesel (125 HP) | 2007 | CAN |
| 2.2 D CAT D, Diesel (177HP) | 2008 | CAN 11bit (500kb) | |
| 2.0 D-4D, Diesel (126HP) | 2009 | CAN 11bit (500kb) | |
| 1.4 D-4D, Diesel (90HP) | 2010 | CAN 11bit (500kb) | |
| Toyota Avensis | Diesel (101 HP) | 1998 | ISO 14230-4, ISO 9141-2 |
| Diesel (109 HP) | 1999 | ||
| Gasoline (148 HP) | 2001 | ISO 9141-2 | |
| 1.8 VVTi, Gasoline (128 HP) | 2001 | ISO 14230-4, ISO 9141-2 | |
| Gasoline (128 HP) | 2002 | ISO 14230-4, ISO 9141-2 | |
| 2.0 VVTi, Gasoline (145 HP) | 2003 | ||
| 2.0 D-4D, Diesel (116HP) | 2003 | ISO 9141 | |
| 2, Gasoline (150HP) | 2004 | ISO 9141 | |
| D4D T25, Diesel (114 HP) | 2005 | ISO 9141-2 | |
| 2.4 VVT-i, Gasoline (160HP) | 2005 | ISO 9141 | |
| 2.0 D-4D, Diesel (126HP) | 2006 | KWP SLOW | |
| 2.2 DCAT, Diesel (177HP) | 2006 | KWP FAST | |
| Toyota Avensis T22 Facelift | Gasoline (128 HP) | 2000 | ISO 9141-2 |
| Toyota Avensis T25 | Diesel (114 HP) | 2003 | ISO 9141-2 |
| Gasoline (128 HP) | 2003 | ISO 9141-2 | |
| Gasoline (128 HP) | 2003 | ||
| Toyota Aygo | 1, Gasoline (68HP) | 2005 | ISO 9141 |
| , Gasoline (68 HP) | 2006 | ISO 9141-2 | |
| Gasoline (68 HP) | 2006 | ISO 9141-2 | |
| Gasoline (68 HP) | 2007 | ISO 9141-2 | |
| Gasoline (68 HP) | 2008 | ISO 9141-2 | |
| 3 cyl 1000cm3, Gasoline (60HP) | 2008 | ISO 9141 | |
| Gasoline (68 HP) | 2009 | ISO 9141-2 | |
| Gasoline (68 HP) | 2011 | ISO 9141-2 | |
| Gasoline (68 HP) | 2011 | ISO 9141-2 | |
| Toyota Aygo Cool | Gasoline (68 HP) | 2007 | ISO 9141-2 |
| Toyota Camry | 2.4, Gasoline (150HP) | 1999 | ISO 9141 |
| 2002 | ISO 14230-4, ISO 9141-2 | ||
| 2.5, Gasoline (170HP) | 2012 | CAN 11bit (500kb) | |
| Toyota Camry CE | Gasoline (135 HP) | 1997 | |
| Toyota Camry CE | Gasoline (121 HP) | 1997 | |
| Toyota Celica | 1,8 VVTI, Gasoline (207 HP) | 2000 | |
| 1.8 VVTI, Gasoline (195 HP) | 2000 | ||
| 1.8 vvti, Gasoline (143HP) | 2000 | ISO 9141 | |
| Gasoline (190 HP) | 2001 | KW 1281 | |
| Toyota Celica GT-S | 2000 | ISO 14230-4, ISO 9141-2 | |
| Toyota Corolla | 1997 | VPW J1850 | |
| 1.6 VVTi, Gasoline (110HP) | 1999 | ISO 9141 | |
| Gasoline (190 HP) | 2002 | ISO 9141-2 | |
| 1.8 VVTi, Gasoline (192HP) | 2002 | ISO 9141 | |
| 2.0 HDi, Diesel (90HP) | 2003 | ISO 9141 | |
| 1.4 D-4D, Diesel (90HP) | 2004 | CAN 11bit (500kb) | |
| 1.4, Gasoline (97HP) | 2004 | ISO 9141 | |
| 2.0 D-4D, Diesel (115HP) | 2004 | ISO 9141 | |
| 1.4, Gasoline (128 HP) | 2005 | ||
| 2.2 D-4D, Diesel (136HP) | 2006 | KWP SLOW | |
| 2.2 D4-D, Diesel (177HP) | 2006 | KWP SLOW | |
| 2.0 D-4D, Diesel (126HP) | 2011 | CAN 11bit (500kb) | |
| Toyota Corolla (European) | 2002 | ISO 14230-4, ISO 9141-2 | |
| Toyota Corolla CE | Gasoline (121 HP) | 2004 | |
| Toyota Corolla Combi | Gasoline (109 HP) | 2006 | ISO 9141-2 |
| Toyota Corolla E 11 | Diesel (89 HP) | 2001 | |
| 1.4 VVTi, Gasoline (96 HP) | 2000 | ISO 9141-2 | |
| Toyota Corolla E12(T) Combi | Gasoline (109 HP) | 2006 | ISO 9141-2 |
| Toyota Corolla Kombi E12T | (4ZZ-FE) 1,4L 97PS, Gasoline (96 HP) | 2007 | ISO 9141-2 |
| Toyota Corolla Verso | Gasoline (109 HP) | 2002 | ISO 9141-2 |
| Diesel (117 HP) | 2004 | ISO 9141-2 | |
| , Diesel (128 HP) | 2004 | – | |
| Gasoline (135 HP) | 2005 | – | |
| , Gasoline (128 HP) | 2008 | – | |
| Toyota Echo | 1.5, Gasoline (90HP) | 2003 | ISO 9141 |
| Toyota FJ Cruiser | V6 4.0, Gasoline (280HP) | 2007 | CAN 11bit (500kb) |
| Toyota forturner | Diesel (135 HP) | 2007 | |
| Toyota Hilux | 3.0 D-4D, Diesel (171HP) | 2007 | KWP FAST |
| Toyota IQ | 1L, Gasoline (67HP) | 2009 | CAN 11bit (500kb) |
| Toyota Land cruiser D4D | Diesel (219 HP) | 2004 | |
| Toyota lc120 | Diesel (164 HP) | 2004 | |
| Toyota mr2 | 1.8 VVT-i, Gasoline (142HP) | 2000 | ISO 9141 |
| Toyota MR-S | 1.8 vvti, Gasoline (143HP) | 2000 | ISO 9141 |
| Toyota Previa | Gasoline (155 HP) | 2000 | ISO 14230-4, ISO 9141-2 |
| 2.4 vvti, Gasoline (156HP) | 2000 | ISO 9141 | |
| Gasoline (155 HP) | 2002 | ISO 14230-4 | |
| Gasoline (155 HP) | 2004 | ||
| Diesel | 2002 | not compliant | |
| Gasoline (155 HP) | 2001 | ISO 14230-4, ISO 9141-2 | |
| Toyota Prius | Gasoline (105 HP) | 2006 | |
| 1.5, Gasoline (110HP) | 2006 | CAN 11bit (500kb) | |
| Toyota Prius 3 | 1.8, Hyb (136HP) | 2009 | CAN 11bit (500kb) |
| Toyota Prius HW 11 | Gasoline (72 HP) | 2001 | ISO 9141-2 |
| Toyota Prius II | Gasoline (77 HP) | 2007 | CAN |
| Toyota RAV4 | 2.0 VVT-i, Gasoline (150HP) | 2000 | ISO 9141 |
| 2001 | ISO 14230-4, ISO 9141-2 | ||
| Gasoline (148 HP) | 2002 | ISO 14230-4, ISO 9141-2 | |
| Diesel (114 HP) | 2002 | ||
| Diesel (114 HP) | 2004 | ISO 14230-4 | |
| 2.0 D-4D, Diesel (116HP) | 2004 | KWP FAST | |
| D-4D, Diesel (135HP) | 2004 | ISO 9141 | |
| 2.2 D-4D, Diesel (136HP) | 2006 | CAN 11bit (500kb) | |
| 2.2 D-4D, Diesel (177HP) | 2006 | CAN 11bit (500kb) | |
| Diesel (148 HP) | 2009 | ||
| 2.2, Diesel (150HP) | 2009 | CAN 11bit (500kb) | |
| V6, Gasoline (260HP) | 2010 | CAN 11bit (500kb) | |
| Diesel (175 HP) | 2006 | CAN | |
| Toyota Sienna | 3.3, Gasoline (220HP) | 2006 | ISO 9141 |
| Toyota Sienna LE | 1999 | ISO 14230-4, ISO 9141-2 | |
| Toyota Sol Automatik | Gasoline (85 HP) | 2001 | ISO 9141-2 |
| Toyota Solara | 1999 | ISO 14230-4, ISO 9141-2 | |
| Toyota Solara LE | 2000 | ISO 14230-4, ISO 9141-2 | |
| Toyota Tacoma | 1995 | VPW J1850 | |
| 2000 | ISO 14230-4, ISO 9141-2 | ||
| 2002 | ISO 14230-4, ISO 9141-2 | ||
| 4.0 vvti, Gasoline (236HP) | 2006 | KWP FAST | |
| Toyota Tundra | 2000 | ISO 14230-4, ISO 9141-2 | |
| 2001 | ISO 14230-4, ISO 9141-2 | ||
| 2003 | ISO 14230-4, ISO 9141-2 | ||
| 4.7, Gasoline (230HP) | 2003 | ISO 9141 | |
| Toyota Yaris | 1.0, Gasoline (68 HP) | 1999 | ISO 9141-2 |
| Gasoline (85 HP) | 2000 | ||
| 1.3, Gasoline (86HP) | 2000 | ISO 9141 | |
| 1.5 16V, Gasoline (105HP) | 2000 | ISO 9141 | |
| Gasoline (74 HP) | 2002 | ||
| 1.0 VVT-i, Gasoline (65HP) | 2002 | ISO 9141 | |
| 1.4L, Diesel (63HP) | 2003 | ISO 9141 | |
| 1.4 D-4D, Diesel (75HP) | 2003 | ISO 9141 | |
| 1.0 VVTi, Gasoline (68HP) | 2004 | ISO 9141 | |
| Gasoline (86 HP) | 2006 | ||
| 1.4 D-4D, Diesel (90HP) | 2006 | ISO 9141 | |
| Gasoline (74 HP) | 2007 | ISO 14230-4 | |
| 1.3, Gasoline (87HP) | 2009 | CAN 11bit (500kb) | |
| D4-D, Diesel (90HP) | 2010 | CAN 11bit (500kb) | |
| Toyota Yaris Verso | Gasoline (105 HP) | 2002 | ISO 9141-2 |
| Gasoline (104 HP) | 2003 | ISO 9141-2 | |
| Toyota Yaris xp9 | Gasoline (105 HP) | 2009 | |
| Lexus IS 200 Automat | Gasoline (156 HP) | 2003 | ISO 14230-4 |
| Lexus IS200 | 2, Gasoline (155HP) | 1999 | ISO 9141 |
| Lexus IS300 | 3, Gasoline (210HP) | 2002 | ISO 9141 |
| Lexus Rx400h | 3.3 V6, Hyb (211HP) | 2007 | CAN 11bit (500kb) |
| 2.6, Hyd (270HP) | 2008 | CAN 11bit (500kb) | |
| Lexus Rx450h | V6, Gasoline (295HP) | 2011 | CAN 11bit (500kb) |
Note that this compatibility list is not exhaustive and is intended as a general guide.
OBD2 Protocols Used by Toyota:
Toyota vehicles utilize a range of OBD2 protocols depending on the model year and specific systems. Here’s a brief overview of the protocols mentioned:
- ISO 9141 & ISO 14230 (KWP2000): These are older ISO standards used in many early OBD2 compliant vehicles, including Toyotas from the late 1990s to mid-2000s. They use the K-Line (Pin 7) for communication.
- J1850 VPW & J1850 PWM: SAE J1850 protocols were used in some earlier models, primarily in North America, before CAN became dominant. VPW (Variable Pulse Width Modulation) and PWM (Pulse Width Modulation) are variations of this protocol.
- KWP SLOW & KWP FAST: Keyword Protocol 2000 (KWP2000) can operate at different speeds. “SLOW” and “FAST” refer to the data transmission rates, with FAST being the quicker of the two, improving diagnostic speed.
- CAN (Controller Area Network): The CAN bus protocol is the current standard for vehicle communication, offering high speed and reliability. Toyota, like most modern manufacturers, transitioned to CAN for OBD2 and in-vehicle networking from the mid-2000s onwards. The CAN protocol utilizes Pins 6 (CAN High) and 14 (CAN Low).
Utilizing Your Toyota OBD2 Pinout for Diagnostics
Knowing your Toyota OBD2 pinout and the compatible protocols empowers you to:
- Choose the Correct Diagnostic Tool: Ensure your OBD2 scanner or tool is compatible with the protocol used by your Toyota model.
- Understand Communication Issues: If you encounter problems connecting with your vehicle’s ECU, the pinout helps troubleshoot potential wiring or connector issues.
- Perform Advanced Diagnostics: For experienced users, understanding the pinout can facilitate more in-depth diagnostics and custom interface development.
By understanding the Toyota OBD2 pinout and compatibility, you are better equipped to maintain your vehicle and utilize diagnostic tools effectively, ensuring your Toyota runs smoothly and efficiently.
