Problem:
Failed to read GM 6T75 gearbox TCM with OBDSTAR DC706 using TCM-020 solderless gearbox connector on bench mode.
Error No response from ECU and ask to bridge a 120 ohm resistor.
Solution:
Don’t need to bridge a 120 ohm resistor if using solder-free TCU adapters.
But need to switch 1 and 2 to “ON” position on P004 adapter in order to connect with the TCU.
