I have a 2012 Jeep Compass 2.2 diesel ECU with DCM 3.5. Actually it’s from Mercedes company 2.2 diesel, similar with CRD2. It’s 136 horsepower. It can’t be read via OBD or on bench, but it can be read/written with CG FC-200 ECU programmer in boot mode.
Connect FC200 to a PC and run software
The ECU model cannot be found in Jeep option
Select Mercedes>> DELPHI CRD2.X MPC556X>> Boot
Check the wiring diagram
Open ECU shell, and then connect FC200 programmer to ECU according to the wiring diagram
Held the brown cable to GPT-0 point in boot mode
Start to perform the related operation
Connect ECU successfully
Read and back up the original PFlash and ExtEEPROM in sequence
After that, load file to write only the difference between the original and what I modified
Write data successfully
CG FC-200 makes an excellent job on Delphi ECU DCM3.5.
