|
Reading PIDs is not advanced canbus coding techniques, it's literally the simple first step you advertise.
Before you start poking at a car, it's easiest and simplest to know what is going on, the easiest way to know what is actually going on without taking anything apart is to kindly ask the stinkin brainbox what it's doing. What signal is it getting? What action is it taking once it has received that signal? It might seem intuitive to press the unlock button and watch a DVOM poked into the door lock actuator, but what then? if you see no reaction, is the control module at fault? why? was the output even turned on or was it inhibited for some other reason?
You want to talk first step? How high up in the diag tree is too high?
|