OBDSTAR DC706 Clone Hyundai MEG17.9.12 ECU

 In this guide, we’ll walk through the process of cloning a Hyundai/Kia MEG17.9.12 ECU (Engine Control Unit) using the OBDSTAR DC706 or X300 Classic G3 Full tool. The goal is to replace a faulty ECU with a repaired one, ensuring compatibility by transferring the software from the original unit.

The Problem

The original ECU (ME 17.9.12 from Hyundai) has a known transmission issue, a common problem familiar to many technicians. Instead of repairing it immediately, the decision was made to install a pre-repaired ECU (ME17.9.12 from Kia) with a different catalog number. Although the hardware is not identical, the cloning process can make it work.

Tools and Setup

• OBDSTAR DC706/G3: The primary tool for reading and writing the ECU software.

• MP001 Adapter: Required for connecting to the ECU.

• Power supply: Instead of using the ignition signal as requested by the tool, a direct +12V power supply was used because the ignition signal wasn’t functioning properly.

Step-by-Step Process

1. Connecting the Original ECU

• The ECU was successfully connected on the first attempt using the modified pinout.

• A full dump of the ECU’s data (including the EEPROM and flash memory) was read and saved. The process was relatively fast.

• Preparing the Replacement ECU

• The second (replacement) ECU was connected, but its firmware wasn’t read because the necessary files were already available.

1. Writing the Software

   • The saved data from the original ECU was written to the replacement unit.

   • Some ECUs can be programmed directly on the bench, but in this case, the cloning method was chosen for reliability.

2. Testing the Replacement ECU

3. • After writing the software, the ECU was disconnected and installed in the vehicle.

   • The car started successfully, confirming that the cloned ECU was working.

   • A check engine light appeared, but the vehicle was operational, indicating a successful clone.

4. Final Steps

   • The ECU was removed again for final assembly (it was temporarily mounted with bolts for testing).

   • The bench setup was confirmed to be fully functional for reading and writing this specific ECU model (ME17.9.12).

Conclusion

The OBDSTAR DC706 proved to be an effective tool for cloning the Hyundai/Kia MEG17.9.12 ECU, even when using a replacement unit with a different catalog number. The process was straightforward, and the test drive confirmed everything was working correctly.

This method can save time and effort, especially when dealing with known ECU issues. For technicians working with these units, this approach is a reliable solution.

Final Note: Always ensure proper backups and verify compatibility before performing such procedures. Happy repairing!