Scan Tool Does Not Communicate With UART Data Line

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

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

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

Scan Tool Does Not Communicate With The UART Data Line (Part 4 Of 4):

Scan Tool Does Not Communicate With The UART Data Line (Part 1 Of 3):

Scan Tool Does Not Communicate With The UART Data Line (Part 2 Of 3):

Scan Tool Does Not Communicate With The UART Data Line (Part 3 Of 3):