Correct..
You had me confused as you have all the info right there ..
As stated, The led tool is simply a portable led/sw replica of the one you have on the car..
so, if you look at the 38 pin connector and the chart ID , you can see that the tools +[pos/red] goes to pin 3 for power,
the - [ neg/black] to pin 1 for ground, and now the test pin goes to whatever pin/module you want to get the codes from..
[Many guy just put alligator clips on the tools pos/neg and just go to the battery for powering the tool, as they use them on different systems]
The procedure is the same as the built-in LED/SW..
thats all...
then you go to the code ID chart for that particular module/code meaning.....

Duty cucle is not for this system..