obd2 cable 16pin to db 9pin serial rs232 obd ii db9 to 16p by epackage

(j2850 bus+) 2----------------1+2 (chassis ground) 4-------------2 (signal ground) 5--------------1 (can high j-2284) 6------------3 (iso 9141-2 k line) 7----------4 (j2850 bus- ) 10---------------6