Ok...
Just went out and tried that..
Pressed button for 2 to 3 sec... and after release it takes a sec or so to flash the LED... pressed it again for 2 to 3 sec and the LED gives one brief flash as before... No change in the readout from the X11 connector... still reads 30%.
Tried pressing for 2 to 3 secs and then pressing again before the LED flashes... no flash occurs...
On my Son's 88 300TE which has the smaller diagnostic port with I think 7 pins you do the one press and then another and the LED come on solid signalling you are in diagnostic mode...
This 16 pin car is not doing it...
What am I doing wrong?
