Question about the wiring diagram of ODB II to RS232

[djemai]

GOOD DAY FOR EVERY BODY,

could someone explain to me where to connect the pins 1,2,3,6,8,..,16  of the ODB II and the interface DB9 with pins 1,4,6,8,9.mentioned in the link below ????

http://pinoutsguide.com/CarElectronics/obd2_simple_cable_pinout.shtml

thnks in advance! ;)