AV-SCANNER / Accessory guides / Diagnostic
This guide explains how to select, connect, and use a phone endoscope for automotive inspection, covering the tool's capabilities, the types available, and the setup process for safe and effective operation. It walks through step-by-step procedures for inspecting engine cylinders, fuel systems, and other confined spaces, with worked examples that show how to interpret what you see on screen. The guide also details common diagnostic jobs, mistakes to avoid, and maintenance practices that keep the tool reliable. By the end, you will be able to choose the right endoscope for your needs, perform inspections confidently, and know when a professional should take over.
Guidance is general and covers many makes. Exact procedures and values vary by model, so confirm them in the factory service information for your vehicle.
Download all 12 sections as a branded PDF to use in the workshop.
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