Read and Write Hyundai SIM2K-251 ECU by OBDSTAR DC706

 OBDSTAR DC706 updated Hyundai Kia SIM2K-250 SIM2K-251 ECUs in 2023.  They fixed the bug in the new software version in Jan, 2024. Now it will read and write SIM2K 251/250 without problem.

Tools need:

OBDSTAR DC706

OBDSTAR P004 adapter

Requires ECM software version V30.41 or above (make sure is up-to-date)

Procedure:

Go to ECM->V30.41->Hyundai->Hyundai Simens/Continental SIM2K-251 TC1724+ TC1782

Read instructions and connections before operation

There are two MCUs in SIM2K250 and SIM2K260, one of the MCU types is TC1782 (stores ECM data), the other MCU type is TC1724 (stores TCM data).
If need to clone it, both ECM and TCM data need to be cloned.

 

Check wiring diagram

First comes the TCM

Then check ECM pinout.

Compared with TCM, ECM requries one more 12V jumper.

We are going to read TCM first

Connect TCM with DC706 via P004 follow the wiring diagram

Select protocol, press Start

Switch ignition off

Switch ignition on

Then press Connect

Read and save INT flash TC1724 of TCM

Read and save INT eeprom TC1724 of TCM

Write INT flash TC1724

Then write INT eeprom TC1724

Load external data, select INT eeprom TC1724 and write

Write INT eeprom successfully

Disconnect.

 

Then connect ECM with OBDSTAR DC706 via P004 follow the wiring diagram

Add a 12V jumper

Select protocol->ECM

Switch ignition off

Switch ignition on

Connect

Read and save ECM INT Flash TC1782

Read and save ECM INT eeprom TC1782

Write INT flash TC1782

Load external data, upload INT flash TC1782 and write

Write INT flash TC1782 successfully.

Write INT eeprom TC1782

Write ECM INT eeprom TC1782 successfully.

Done.