Scan Tool Does Not Communicate With E & C Data Line

Scan Tool Does Not Communicate With The E And C Data Line (Part 1 Of 4):

Scan Tool Does Not Communicate With The E And C Data Line (Part 2 Of 4):

Scan Tool Does Not Communicate With The E And C Data Line (Part 3 Of 4):

Scan Tool Does Not Communicate With The E And C Data Line (Part 4 Of 4):