YouTube videos alone should not dictate diagnostic routines at professional automotive service facilities.
Instead, internet-sourced videos constitute a complement to proven, established troubleshooting techniques — nothing more.
A video may provide golden nuggets that simplify a diagnosis. For example, a video may create the legendary "aha" moment for a hard-working technician who has struggled to solve a problem, but a video also could become fool's gold for the lazy or harried tech who skipped crucial checks for the symptom or trouble code at hand.
Sometimes techs peruse videos for proverbial "silver-bullet" fixes because they don't know test procedures and/or have no interest in learning them. Or perhaps they are searching for "high-percentage" fixes because bosses do not pay them for diagnostic time.
The frenzied search for the perceived fast fix may distract techs from performing proven, established tests. To me, anything that distracts techs from essential tests is just that — a distraction.
Desperate people may do desperate things. For example, a tech may feel overwhelmed by an elusive problem on a customer's car.
In desperation, this tech may latch onto the contents of any YouTube video topic that even remotely seems related to the symptom. To make matters worse, some exasperated techs read far too much into certain tech tips regardless of their source.
In reality, a particular YouTube video topic may be much too broad or too narrow in scope to address a tech's dilemma in the bays.
Meantime, I admire some YouTube videos because the material is sharp and detailed; the presenter has honed the topic into a crisp, highly focused little tutorial.
Viewing other videos, however, is a slog because the presentation lacks clarity, conciseness and focus.