This document provides instructions on how to use the troubleshooting and inspection sections of an automotive service manual. It begins with an overview of the typical diagnostic process, including gathering information, verifying symptoms, checking for diagnostic codes, and using inspection charts. It then explains different aspects of the troubleshooting sections, such as the diagnosis function, inspection procedures, and service data reference tables. The document emphasizes starting with connector and component inspections before checking harnesses and replacing control modules. It also provides guidance on measuring voltages, locating connectors in wiring diagrams, and inspecting for open and short circuits.