Here’s a demonstration of how to clone the 2014-2017 Nissan Leaf 23740 engine with Launch X431 ECU & TCU Programmer/ X-PROG3 PC Adapter + X431 GIII on bench. Both ECU tools are working the same way, you only need to have either one.
Procedure
Open X431 ECU & TCU Programmer/ X-PROG3 PC Adapter software.
Search: 23740
Select: Nissan, Leaf 2014-2017, EM61 EM61 109, 23740-3Nxxx-Genl_SH72531
Click “Direct connection of diagram”.
Connect the original ECU according to the wiring diagram.
After a successful connection, click “Connect”.
Read EEPROM data.
Save the EEPROM data file.
Read FLASH data.
Save the FLASH data file.
Click “Disconnect”.
Re-connect to another ECU.
Backup EEPROM & FLASH data.
Write EEPROM data…
Data is successfully written.
Write FLASH data…
Data is successfully written.
A Nissan ECU clone has been done.
