ECUHELP KT200II ECU Programmer has been successfully tested for reading and writing the EDC16C3 ECU on a Renault Scenic II 1.9DCI 120 via OBD. 

Test Procedure
1.Preparation:
The vehicle was prepared for the test by ensuring all connections were secure and the engine fan was unplugged to avoid interference.

2.Read Operation:
1).The KT200II was connected to the vehicle's OBD port.
2).The software interface was used to initiate the reading process of the EDC16C3 ECU.
3).Injector data was read and saved before proceeding with any write operations.

4.Write Operation:
1).Following the successful read operation, the KT200II was used to write data back to the EDC16C3 ECU.
2).Injector data was written to the ECU, and the operation was monitored for any issues.

Conclusion
KT200II ECU Programmer is confirmed to be an effective tool for reading and writing the EDC16C3 ECU on a Renault Scenic II 1.9DCI 120 via OBD. The test demonstrated that the device could handle these operations smoothly, ensuring accurate injector data management and reliable ECU performance.