Xhorse VVDI Prog read and write JAC vehicles Delphi MT62.1 engine control module ECU successfully. BITBOX can only recognize ID, PCM (genuine) can read but it is costy. VVDI-Prog can read this ecu if using the correct pinout.

Check the wiring diagram pinout here:

If it fails to read MT62.1 ECU by this pinout, try this:

VCC not connected; connect a 302-ohm resistor to REST. Cut the line on the right. Most importantly, connect a 1k resistor from the VCC point to JCOMP.

FYI:

VVDI Prog Pinout to Dephi MT62.1G ECU