If fails to read a Chevrolet or Daewoo Delphi MR-140 ECU with OBDSTAR DC706, fix your pinout.
This is the bench wiring diagram in the device.
The numbers are upside down. Example line k is 32. Not the 17th.
Here is the correct pinout.
Credit to Ramirez.
Try the correct pinout, and take a good power supply (5amp min and 12v), it was tested working without issue.
FYI:
Carprog also read this ecu using this pinout.
carprog pinout for Delphi MR-140
M37, M38, M39, M40, M41 – ground
K1, K17 – +12
K18 – ignition
K32 – K-line
K4 – boot
