AV-SCANNER / Accessory guides / Diagnostic
This guide teaches you to use an infrared thermometer as a fast, non-contact diagnostic tool for comparing temperatures across components and spotting failures before they cause breakdowns. It covers the physics behind the reading, the types of infrared thermometers available, how to choose one that suits your work, and the correct setup and safe use procedures. You will learn to interpret readings with worked examples, apply the tool to real diagnostic jobs such as brakes, cooling systems, and electrical faults, and avoid common mistakes that lead to false conclusions. By the end, you will be able to perform accurate temperature comparisons, identify failing components with confidence, and know when a problem requires a professional's attention.
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 11 sections as a branded PDF to use in the workshop.
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