OBDSTAR MT203 CAN Driver/Gateway Simulator

The OBDSTAR MT203 CAN Driver/Gateway Simulator is a specialized tool designed for automotive electronics maintenance and repair, offering 2-year free updates. It provides CAN driver and gateway simulation functionality, supports multiple vehicle brands, and features a compact design—making it an essential aid for automotive electronics maintenance engineers.

Distributor Code: 0086A002

Key Features of OBDSTAR MT203

• Uses STM32H723 high-performance MCU for fast operation
• Supports Standard CAN, Low-Speed (Fault-Tolerant CAN), and CAN FD protocols
• Offers automatic scanning, manual baud rate selection, and custom baud rate input to simulate various gateway types
• Integrated design with built-in 120Ω resistor switch for ease of use
• Simple and intuitive menu for quick device mastery
• Mini USB upgrade cable connects directly to PC for one-key firmware upgrades

Applicable Maintenance Scenarios

• Automotive electronic ECU repair (Airbag, Dash, BCM, and other modules) – simulation gateway diagnostic test via BENCH
• Automotive electronic ECU repair (Dash, Audio, Gear Lever, AC panel, and other modules) – CAN drive test via BENCH
• E-Car component repair (Compressor, DCDC, On-board charger, and other modules) – simulation gateway diagnostic test via BENCH

Supported Vehicle Brands for Dash, Audio, Gear Lever, AC Panel, and Other Test Functions

AUDI, FORD, PORSCHE, BENZ, JAGUAR, ROLLS-ROYCE, BMW, LAMBORGHINI, VOLKSWAGEN, DODGE, LAND ROVER, VOLVO

Supported Protocol Types and Functions

1. Gateway Supported Protocols

Standard CAN / Standard CAN

• 500K / 250K
• 500K / 125K
• Custom Baud Rate

Standard CAN / Tolerant CAN

• 500K / 83.3K
• 500K / 100K
• 500K / 125K
• 125K / 125K
• Custom Baud Rate

Standard CAN / CAN FD

• 500K / 5M
• 500K / 2M
• Custom Baud Rate

2. CAN Driver Supported Functions

Supports Dash, Audio, Gear Lever, AC Panel, and other test functions for AUDI, BENZ, BMW, DODGE, FORD, JAGUAR, LAMBORGHINI, LAND ROVER, PORSCHE, ROLLS-ROYCE, VOLKSWAGEN, VOLVO, and other brands.

Function Display (From OBDSTAR APP)

Main Page:

Gear Lever Pinout:

Dash Pinout:

Radio Pinout:

Frequently Asked Questions (FAQs)

Q: Why does the automatic scanning fail?

A: The success of automatic scanning depends on several factors:

1. Ensure the diagnostic instrument and ECU are correctly connected, and the ECU is powered before initiating automatic scanning.
2. If the ECU remains powered without communication for a period (seconds or minutes), it may enter hibernation mode and become unresponsive—requiring a power cycle.
3. Some ECUs do not actively transmit CAN signals; in such cases, manual configuration of the device is necessary.
4. CAN FD is not supported for automatic scanning—manual setup is required.

Q: Where can I check the wiring diagram of the CAN driver?

A: Download the OBDSTAR APP from the Apple App Store or Google Play Store. The app includes wiring diagrams for Dash, Audio, Gear Lever, and more.

Q: What does the 120Ω resistor do?

A: If the ECU does not include a built-in 120Ω resistor, you must switch the unit’s resistor switch to ON to ensure proper CAN line communication.

Q: Is the FlexRay protocol supported?

A: No, it is not supported.

Package Includes

• 1pc × OBDSTAR MT203 main unit
• 1pc × Mini USB upgrade cable