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Lets look at this again… Which Probe works best

Lets look at this again… Which Probe works best

www.aeswave.com Uscope - https://www.aeswave.com/uScope-Master-Kit-p9622.html Wyze Probe - https://www.aeswave.com/15-inch-WyzeProbe-for-Secondary-Ignition-and-COP-p8764.html Rotkee Probe - https://store.rotkee.com/en/lx1-coil-on-plug-probe.html In this video I...

Do U-Scope? (Episode 5) Attenuators – they are THAT important!!

Do U-Scope? (Episode 5) Attenuators – they are THAT important!!

Probes - https://www.aeswave.com/uMicroBackProbe-Minimum-impact-probe-for-high-density-connectors-p10709.html U scope - https://www.aeswave.com/uScope-Master-Kit-p9622.html Check out our website - sixstarautomotive.com If you’ve ever scoped an ignition coil, injector,...

Delorean calipers have never been so fun

Delorean calipers have never been so fun

Today we’re rebuilding the rear brake calipers on a DeLorean — a job that solves common issues such as dragging brakes, uneven pad wear, sticking pistons, and handbrake imbalance. The DeLorean’s rear calipers have some unique design quirks, including the integrated...

The automotive industry is not dying…

The automotive industry is not dying…

Everyone’s talking about how bad the automotive industry is right now — low pay, burnout, lack of respect, and technicians leaving the trade. But that’s only half the story. In this video, I talk about what’s really going on in the automotive world — and why it’s not...

Stop Guessing, Start Scoping (Lets start with the basics)

Stop Guessing, Start Scoping (Lets start with the basics)

Automotive Lab Scope Basics | Understanding the uScope In this video, we walk through the fundamentals of using a lab scope (automotive oscilloscope) — what it does, how it works, and why it’s one of the most powerful diagnostic tools you can own. Using a signal...

Do U-Scope? (Episode 6) 5 volt reference – Why not 12v



Uscope – https://www.aeswave.com/uScope-Master-Kit-p9622.html

5V reference circuits cause some of the most confusing “multiple sensor failure” diagnostics in modern vehicles. In this video I break down what 5V reference is, why it’s 5 volts, how the ECM/PCM uses it to measure sensors, and the built-in protections that keep a problem from turning into a catastrophe—most of the time.

This video is based on a real failure I caused during training: I shorted a 5V reference circuit to battery voltage (B+) and damaged a module. That mistake turned into a clear lesson on:

Why so many sensors share a 5V reference line

What happens when the 5V ref gets shorted to ground, shorted to power, or pulled down by a bad sensor

Why one failure can create multiple codes and “everything looks bad” symptoms

Practical troubleshooting steps to confirm the fault fast (without guessing)

If you diagnose MAP/TPS/pressure sensors, throttle bodies, A/C pressure transducers, fuel tank pressure sensors, and other 3-wire sensors, understanding 5V reference will make you faster and more confident.

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