Re: Laptop ECU Interface
From what I saw when my local autolocksmith/autoelectrician plugged in his computers into my cars eobd (obdII) port, most of the (basic) functions were accessible, but a couple didnt work (e.g. he could read my ecu's serial no, he could unlock my doors, but his computer claimed it could open my boot even though my car doesnt have a solenoid to do this), and he said he could only get into the main engine ecu with his h/w, couldnt get into other boxes such as alarm ecus, etc. We wanted to try alfadiag, but couldnt (quickly) get hold of a decent laptop with a serial port and I think the website only listed some uses, and I have been told (dont know if its true though) that the only way to access all diagnostic functions are via Examiner which is only available to AR dealers as far as I know. Also after some research I found out that newer models (I cant remember exactly when, I think about 99/00 onwards) use the CAN bus system which utilises just two wires multiplexed to transfer this sort of data around the car.