Look here: how to use Kess V2 ECU programming tool to read VAG ECU EDC17CP44 through OBD. FYI, the easy way is to read the ECU with a BDM adapter, without soldering.
ECU EDC17CP44
CPU: Infineon TriCore TC1797
Flash Memory: CPU Internal Flash 32Mbit (4MB)
Boot Mode: YES
E2P: CPU Internal

Vehicles with ECU EDC17CP44:
| VEHICLES / INFO | ECU TYPE | PS or HP Rating |
| · Touareg 2013 – 2015
· Q7 – 2013 – 2015 |
EDC17CP44 | 236hp |
| · Toureg 2009 – 2012
· Q7 2009 – 2012 |
EDC17CP44 | 221hp |
| · A6 Quattro 2015
· Q5 2014 – 2015+ |
EDC17CP44 | 236hp |
Connection:
| Connection | Pin(s) |
| +12V / Power | T91 PIN 5 (VCC/+12/T30)
T91 PIN 50 (T15) IGN |
| GND / Ground | T91 – PIN 1 |
| CAN – H | T91 – PIN 79 |
| CAN – L | T91 – PIN 80 |
| S1 | T105 – Pin 18 |
| S2 | T105 – Pin 21 |

EDC17CP44 BDM adapter:


This BDM style probe allows reading/writing of VAG / Porsche EDC17CP44 control units without soldering. No additional resistors or boot pins are required!
OBD read with Kess V2:
Car: Audi A6 3.0TDI 230kW EDC17CP44
original file read from server with KESSV2 via OBD

Job’s done!


