Calia wrote:
On Sat, 03 May 2014 09:48:12 -0400, Scott Dorsey wrote:

But, I think the cable you want is pretty much a passive device

Don't they have chips (ELM?) inside of the cables?

This page has some interesting links on it.

http://pinoutsguide.com/CarElectroni...c_pinout.shtml

This active cable does level shifting.

http://pinoutsguide.com/CarElectroni...e_pinout.shtml

No idea what this one converts from and to. If I knew what
an ELM320 did, then I might hazard a guess.

http://old.pinouts.ru/CarElectronics...e_pinout.shtml

This one is active, and it almost looks like it converts
serial port to the other bus standards. It uses a microcontroller,
so maybe it's message based.

http://pinoutsguide.com/CarElectroni...e_pinout.shtml

The cable I have for my car is perfectly passive. That's because
my scanner presumably uses CAN bus on its connector, and the
card uses CAN bus, and so no protocol conversions or level shifts
are needed. If an IBM PC is in the picture, there's bound to be
something that needs changing in the path to the car.

And there's a metric ton of information out there. Just a
matter of sifting through it.

http://www.osefactory.com/tools/k+dc...troduction.pdf

Paul