Scan Tool Does Not Communicate With Components

If scan tool will not communicate, diagnose by using flow charts. See Fig 1-Fig 3

Fig 1: Scan Tool Will Not Communicate Diagnostic Flowchart (1 Of 3)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Scan Tool Will Not Communicate Diagnostic Flowchart (2 Of 3)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Scan Tool Will Not Communicate Diagnostic Flowchart (3 Of 3)

Courtesy of GENERAL MOTORS CORP.