I have E240 year model 1998.
I can connect engine control unit via 38 pin connector (pin #4) under
the hood. ECU responds nice.
But there seems to be something odd when I try to connect transmission
computer by pin #10. There seems to be no responce at all.
Device is ELM327 based and I suppose the protocol should be ISO 9141-2.
What am I doing wrong? Is the transmission connection supposed to be
made with K- or L-line? At least engine responds K-line fine but how
about the transmission?
What I'm lookin for is clearing transmission adaptation. I do not know
what commands to use for this yet, but maybe the connection should work