I will be demonstrating the reading and writing process of a Delphi DCM3.5 ECU from a Peugeot vehicle using ECUHELP KT200 ECU Programmer.

How does ECUHELP KT200 Read / Write Delphi DCM 3.5 ECU?

Greetings, everyone! I will be demonstrating the reading and writing process of a Delphi DCM3.5 ECU from a Peugeot vehicle using ECUHELP KT200. I will also attempt to prepare the key and test if everything functions properly.

ECUHELP KT200 offers two methods to read this type of ECU: BDM mode and OBD2. For this demonstration, I will utilize the multifunction cable to read the ECU. As it’s my first time reading this particular ECU with KT200, I haven’t performed a prior test. However, I expect everything to work smoothly.

Part 1. Connect the multifunctional cable to ECUHELP KT200
Let’s connect the multifunctional cable to ECUHELP KT200. I will need the orange and blue cables, along with an additional power cable. You can find the pinout details in the documentation provided.

After connecting the cables, I realized I forgot to power up the ECU. Now, I have powered it up, and let’s proceed. The ECU DCM3.5 has been successfully identified.

I will save the file and name it as DCM3.5.

While even the software requires to use OBD2 cable, you can directly connect the ECU using multifunction cables if you know the ECU pinout. This allows you to read it similar to OBD2. However, there are exceptions for modules that require unlocking via a key. In the case of this ECU, it doesn’t require any additional steps.

Part 2. Use ECUHELP KT200 to read Delphi DCM 3.5 ECU
The reading process took approximately 11 minutes and 21 seconds via CAN connection.

Now that the reading is complete, I will modify a file and proceed with the writing process. Please note that the file I’m using for testing purposes is not the original file. It is three megabytes in size.

I will attempt to write a different file, which does not have the checksum prepared. I expect KT200 to do the checksum as I stated here. However, due to an issue with my internet connection, I need to temporarily close and reopen the software.

Part 3. Use ECUHELP KT200 to write Delphi DCM 3.5 ECU
The writing process took approximately 8 minutes (7 minutes and 55 seconds).

Now, I need to turn off the dashboard and wait for 180 seconds (3 minutes). Simply click “OK” to proceed.

After the waiting period, I will verify if the ECU DCM3.5 can be identified. I power on the vehicle, and everything is correctly identified. The ECU has been successfully booted.