Here comes a similar problem:
VW T5 EDC17CP20 foxflash bench not working, Says bench mode not supported, use boot mode tricore.
Possible reason:
Some edc17cp20 have high tprot, must boot if bench does no work.
Apparently, it has higher tprot. Dealer updated probably.
Done lots no problem on bench. Only with latent dealer Update bench not work but boot.
TPROT8 Bench & Boot does not work, just flash OBD.
Feedback:
OTB Mode (with OTB adapter)
VW T5 EDC17CP20 OTB Read, Write, Checksum by foxflash.
OBD Mode:
VW T5 2014 Stage 1
EDC17CP20
Bench not work.
Obd read 10 sec.
Write 15 min.
Checksum by fox
Boot mode:
VW T5 EDC17CP20 Boot- Read, Write, Checksum by fox flash
Foxflash boot mode pinout to VAG Bosch EDC17CP20/EDC17CP14 ECU
BOSCH EDC17 CP14/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
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.
