2JZGTE VVTi OBD2: Your Guide to Scanning This JDM Engine

Navigating the world of engine diagnostics can be tricky, especially when dealing with engines from different markets. Many Toyota Supra owners with the 2JZGTE VVTi engine have encountered frustration when trying to use standard OBD2 scanners. The issue? While these engines feature an OBD2 connector, they aren’t fully OBDII compliant due to their Japanese Domestic Market (JDM) origins. This article sheds light on how to effectively scan your 2JZGTE VVTi engine using readily available tools and software.

The challenge arises because the 2JZGTE VVTi ECU, being designed for the Japanese market, adheres to the JOBD (Japanese OBD) standard rather than the OBDII protocols commonly found in vehicles in other regions. Despite the physical OBDII connector, standard OBDII scanners often fail to communicate correctly, leading to inaccurate or no data. However, a solution exists that leverages affordable technology and community knowledge.

The key to unlocking diagnostic capabilities for your 2JZGTE VVTi engine lies in using an ELM327 scanner tool paired with the Torque Pro Android application. This combination, when configured correctly, can bridge the communication gap. Here’s what you’ll need and how to set it up:

Requirements:

• ELM327 Scanner Tool: These are widely available online at reasonable prices. Look for a Bluetooth OBD2 Auto Scanner ELM327 V1.4.
• Torque Pro Android Software: This powerful app can be purchased and installed from the Google Play Store.

Configuration Steps in Torque Pro:

Within the Torque Pro app, you’ll need to input specific initialization commands in your vehicle profile settings. Navigate to the “VERY ADVANCED ELM327” section and add the following lines:

ATIB 96 \n ATIIA 13 \n ATSH8213F0 \n ATSP4 \n 0100

Understanding the Settings:

Let’s break down what these commands mean:

• ATIB96: Sets the ISO baud rate to 9600 bps, adjusting the communication speed.
• ATIIA 13: Sets the ISO (slow) initialization address to 13, defining the target ECU address.
• ATSH8213F0: Configures the header to 8213F0, specifying data packet routing.
• ATSP4: Selects protocol 4, which corresponds to ISO 14230-4 KWP (5 baud init, 10.4 Kbaud), the correct communication protocol for this ECU.
• 0100: Initiates data transmission, starting the diagnostic session.

By implementing these settings, you’re essentially instructing the ELM327 scanner and Torque Pro to communicate with your 2JZGTE VVTi ECU using the correct JOBD-compatible ISO 14230 protocol. This solution, discovered and shared by enthusiasts within online communities, provides a cost-effective way to access valuable diagnostic information from your engine. While this method has been reported as successful by many users, remember that this information is based on community findings and is intended for informational purposes. Always exercise caution when performing vehicle diagnostics and modifications.