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...
In this video, I break down how to perform a Relative Compression Test using an oscilloscope. This fast, non-invasive diagnostic method lets you check engine health without removing spark plugs. You’ll learn how to set up the test, connect a current clamp, record the...
Secondary ignition diagnostics are often overlooked in modern vehicles due to coil-on-plug systems—but the waveform still tells a powerful story. In this video, secondary ignition waveforms are captured and analyzed using an oscilloscope to reveal what is actually...
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...
Learn practical lab-scope workflows you can use today. We reinforce the basics with real-world tests: checking primary ignition current with a low-amp probe, verifying an entire bank of coils via the common power feed, reading fuel-pump current through a fuse-loop...
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...
Real World Voltage Drop testing – Do this Test or you Will be Wrong
Here is a link for the leads I like. I buy mine from Snap-On for more, but these are the same thing. I love this site. If I were to buy my multimeter again, it would be this one.
@ScannerDanner Thank you for what you do and for leading the way in this area. I wish I had someone like your son to help me do this. I have to do it all myself. It is very hard, but I really want to help people get better at this.
This is a case study I came up with to show the value of voltage drop testing computer power and ground circuits. Do not ever guess In this video, we walk through a real-world case study on a 2015 Subaru Outback with a crank-no-start condition.
You’ll learn:
✅ How to locate and interpret wiring diagrams
✅ Step-by-step process to verify PCM powers and grounds
✅ Common mistakes that lead to unnecessary PCM replacements
✅ Proven diagnostic strategies to confirm whether the engine control module (ECM/PCM) is actually faulty
This video is designed to help technicians, and students understand how perform voltage drop testing quickly and accurately using real world numbers and test results. Do not guess when it comes to diagnosis. If you cant prove yourself right, then you are wrong.
📌 Whether you work in a professional shop or at home in the garage, this diagnostic workflow will give you confidence when tackling modern Subaru electrical issues.
🔧 Tools & Concepts Covered:
LoadPro testing with a Multimeter for power and ground verification
Using service information to trace circuits correctly
Recognizing when voltage drop is too high
Tips for efficient diagnostics
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