Here comes a similar problem:
Car information:
VW PASSAT B6 2.0TDI
0281015131
03L907309B
1037563604
EDC17CP20
Read this car with foxflash tool by OBD. And when write with dpf off it put the ecu in program mode and stop ( fans work all time when ignition on) and still survive with connection but car not start ( engine not turn).
I make full flash with original file backup which I get from the internet and wrote it to the ecu (in boot mode ) but still the same ( program mode active and no start). Any solution?
Possible reason:
After interrupting the recording on the diagnostic connector, the control unit fell into protection. Even if you write down the original file, the machine will not start. You need to calculate the full contents of the block in the download mode on the table.
Here is the solution for those who read EDCP17CP20 by OBD but car not start.
You have to flash it with odis-E & FRF FILE.
RFR file for this ECU
03L906022MS_9981
Feedback:
The problem was solved with ODIS-E and Flashing FRF file.
FYI:
Better read/write EDC17CP20 on boot mode instead of OBD. if you do it in boot you have full backup.
How to read and write VAG EDC17CP20 with foxflash in boot mode?
BOSCH EDC17CP14/CP20 [ TC1796 INT.F.] – VW, Audi, Seat, Skoda
Step 1: Read and write ECU
Connect with the multifunction cable the following pinout and the boot shown below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Boot
→ SAK TC1796
ATTENTION:
If the password error message appears at the beginning of the reading, proceed as follows:
Step 2: Password Search
Disable the boot mode by unsoldering the gray wire. Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ OBD PASSWORD TPROT V08 VAG
→ Click on “Find Password” and follow the software messages.
If the password was found with this system, go directly to the boot step to read and write the control unit. Otherwise, see next step.
Step 3: Password search
Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ PASSWORD BFT
→ Click on “Find Password” and follow the software messages.
Now that the password has been found it’s possible to read and write the control unit as described in STEP 1.
