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Tire & Wheel Forum sponsored by The Tire Rack.Suspension Tech and Handling sponsored by.Professional Motorsports sponsored by Bimmerworld.Track, Auto-X & Drag Racing sponsored by.General BMW and Automotive Discussion sponsored by Intercity Lines. #Obd pin 7 8 connection in the adapter softwareQuick Navigation Diagnostic Software Go Top faking it) is far and away the best thing. And of course really working properly (aka actually sensing battery/ignition vs. ![]() Yeah you need battery/ignition sensing to either be faked or work to get everything to work especially anything coding related as the software is super sensitive to power interruptions so it wants to know there's enough voltage to not have the module crap out in mid coding and brick it. #Obd pin 7 8 connection in the adapter modIs it essential to have the battery and ignition sign black or they can stay white?Most of the great DIY info around here for the transistor mod IS for the USB, and djcristi has a sweet one here for the BL that I in fact used to copycat my RL mod on: I am considering modding the interface with COM port using the transistor and the resistor, but I wonder what is the modding procedure for the USB interface. I have the battery and ignition signals white.do I need them black? INPA is working but sometimes it does not find some modules so I wonder why. It works with both interfaces USB (with chip FTDI 232BL) and COM (with MAX232 chip)connection but I do not have the ignition and battery light black. I started enjoying INPA with my VAG KKL in which I soldered together pins 7 and 8. A dodgy soldered connection to pin 16 of the OBD connector is definately a problem.Is it possible that he needs both k-lines hooked up independently? (Pin 17 to OBD pin 7, and Pin 20 to OBD pin 8?) If both DMEs need to communicate simultaneously, I'd imagine having the two lines bridged may lead to some issues Since you have no pin 8, pins 17 and 20 are bridged at the Round BMW 20 pin plug. This is why we suggested you bridge pins 7 and 8 of the OBD connector as normally one K line is connected to each pin. only one K line connection), you would need to connect it to BOTH pins 17 AND 20 (i.e. If your interface only had pin 7 of the OBD connector hooked up to pin 20 of the BMW round 20 pin connector (i.e. OBD Pin 16 -> Pin 14 of BMW 20 pin connector (Power) OBD Pin 15 -> Pin 15 of BMW 20 pin connector (L Line) OBD Pin 7-> Pins 17 & 20 of BMW 20 pin connector (K Lines) OBD Pins 4 & 5 -> Pin 19 of BMW 20 pin connector (Ground) RS232 RI (pin 9 of sub D RS232) is connected with OBD pin 16 (+ battery feed to detect battery signal) over a 1k resistance (shorts protection, the diod is polarity protection). Pin 1 of OBD is connected to DSR (pin 6 of a sub RS232) over a 1k resistance (for shorts protection)Ĥ. uses DTR instead of RTS (pin4 on sub D RS232)ģ. pin 7 and 8 of the OBD interface connectedĢ. #Obd pin 7 8 connection in the adapter modsHere the mods it has over the std interface above:ġ. ![]() #Obd pin 7 8 connection in the adapter serialHere the mods a std OBDII serial KL interface needs to have to be BMW diagnosis compatible (works also with BMW scanner demo, would assume Carsoft would also work but have'n tried it as Carsoft doesn't bring anything when you have INPA/NCS and GT1), as modified schematic and in words: Please observe the 1-4 OBD reference is for the internal connection card to the OBD socket, the schema below lists the corresponding OBD pins. Here how a true KL interface looks (work for std OBDII serial dianosis software (not ELM type software)): The guy also sells the build kit for 15 Euro in his shop (link on the site). ![]() I have build this guys interface after a BMW diagnosis wizard in Germany (MALIBOO building his own diag software for BMW!?) said it was the one to have, it is 100% compatible with INPA and DIS (acutally with EDIABAS STD:OBD) and the modifications to a standard OBDII serial KL interface are clearly described on the selfbuild site (english a straight babelfish translation of his german pages but you'l understand). Basically everything is said, but here a link to a site which has a 100% compatible interface and the explanation + schematics over the BMW mods (from the GT1/EasyDIS installation thread): ![]()
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