https://www.picoauto.com/library/automotive-guided-tests/k-line/
https://www.youtube.com/watch?v=jkcVpBdOKow&ab_channel=DeadOnDiagnostics
http://www.youtube.com/watch?v=V6m2skVlsQI&ab_channel=ContinuousLoad
https://www.youtube.com/watch?v=IyGwvGzrqp8&ab_channel=Electronoobs