I've got two ECUs here: a Siemens Simos 3PD and a Bosch EDC15P+
They both have a CAN-Bus but only for communication. I wasn't able to get a diagnostic session. I read they both use the K-Line interface for diagnostics. So I tried to do a diag via K-Line.
But apparently VAG does not use the standard K-Line interface but also uses the L-Line for communication. That's why you need special KKL-Interfaces for diagnostics. I have such an interface here (AutoDia K409) but I am not able to connect it to my ECU since I don't know where I can find the L-Lines. All the pinouts I found only show the K-Line. Note my ECUs are removed from the car. So there is not ODB2-Plug.
Can somebody tell me where I can find the L-Line? Or am I doing something wrong :think: