Pin 7 on data link as per my record do not have any function.Pin 7 on the OBD port has like 56k ohms to ground, never shows voltage so bus doesn’t seem to be active. Also like 50k ohms resistance between SKIM module pin 3 and OBD pin 7
The can bus pins are 6 and 14 , you must get 2.2 to 2.4 volts with switch on and btw pin 34 and 35 on pcm connector 1 belongs to can bus + and -.