The Diagnostic Methods Section provides information on routine diagnostic tasks.

When following powertrain diagnostics on OBD II vehicles, the system may be checked by an off-board tester referred to as a scan tool. This section contains information for performing diagnostics with the New Generation Star Tester and a generic scan tool. A generic scan tool has a capability that is standard across the automotive industry in the United States. If a New Generation Star Tester is used, functions are selected from a menu. Refer to the instruction manual provided by the tool manufacturer.