|
Here's where I am...
When powered by the car, the K line at the car side OBDII plug, I get 12 volts when the Line is HIGH, zero when LOW.
Writting an L or H to the LCD when changing K line outout and writting an l or h to the LCD when reading the K line (after setting the output) verifies the TX/RX functionality is correct on the chip. (this was during a debug test, and not a protocol test).
I've used three protocol inits at 10400 baud with no valid response yet from the car. (it may well be NO response.)
It may need the L line to init (the pin IS present... so it is an option that is open to Toyota to use the line... - though I don't see why they would require it...)
|