Question before entering:
How to build DSG connector for EE & flash read/ write on PCMtuner? I have built connector as in photos, but it’s not easy to find relay with 720 ohm resistance, i used 320 ohm relay coil resistance to enable L- line power auto control, does it affect the PCM tuner unit? I will try Tactrix open port, also is it necessary to add 120 ohm on parallel for can L&H .
Your pcmtuner has this control circuitry already hence the message would you like to control l line automatically!! The only requirement for dsg on bench is to provide 1 X 12v permanent power hence using a breakout cable (godiag gt107 gearbox adapter).
There are 2 ways to bulid connectors to read DSG gearbox mirco and eeprom for cloning purposes:
1st method is to read on bench using external power supply (gt107) and it works perftectly.
gt107 breakout of gt105 has switched and permanents. With gt107 you need to be able to switch power manually, gt107 has switch. You don’t need anything alse.
This adapter has automatic and manual selection for PCMFlash software. For data reading and writing, you can choose “Auto”, and for diagnosis you can choose ”Manual”. For other software kess v2, DQ200, DQ250, DQ500 you can also choose “Manual”.
Godiag GT107 and PCMTuner Module 58 DSG Gearbox Pinout
PCMTuner PCMFlash Module 58 – VAG DSG/CVT Instruction
2nd method using OBD connection and either PCM tuner OBD or any passthru adapter and works perfectly as well but for OBD you have to add a 120 ohm resistor in can bus & relay for auto connect and disconnect. Shown as images below: