Updated September 2026, 2 weeks ago
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Low Voltage from a Bad Ground? [Voltage Drop Testing Fundamentals]
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![Low Voltage from a Bad Ground? [Voltage Drop Testing Fundamentals]](https://i.ytimg.com/vi/rGQ-bA9z39Y/mqdefault.jpg "Low Voltage from a Bad Ground? [Voltage Drop Testing Fundamentals]
Low Voltage from a Bad Ground? [Voltage Drop Testing Fundamentals]")
![A/C Compressor Clutch Circuit Testing [All Cars] + Recharge](https://i.ytimg.com/vi/sBueOct0qXY/mqdefault.jpg "A/C Compressor Clutch Circuit Testing [All Cars] + Recharge
2013 Ford F-150 5.0L A/C System Clutch Circuit Testing, Electrical Repair and Recharge (topping off a slightly low system using gauge pressures as a guide)
00:00 - intro
00:16 - system pressure test
00:55 - full code scan of all modules
01:12 - Engine Computer Air Conditioning Request Input Test
02:10 - bi-directional test with scan tool
03:07 - A/C clutch tap test
03:54 - testing of the circuit at the A/C relay begins
05:11 - need highlight changed
05:55 - testing the ECM driver
06:32 - continuity test for the clutch (open found)
10:25 - tightening terminals at A/C connector
12:22 - A/C pressures after wiring repair (low charge)
14:51 - topping off the A/C system using gauge pressures to determine charge
18:32 - proper way to remove A/C gauges
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On ScannerDanner Premium, youll get:
*In-depth classroom lectures straight from my book
*Exclusive case studies with live vehicles pulled into class
*Real-time troubleshooting using proven methods
*Post help requests on our forum
*Fundamental training on diagnosing automotive electrical and electronics systems.
ScannerDanner Tools:
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⚠️ Disclaimer:
ScannerDanner LLC is not responsible for misuse, unauthorized changes, or incorrect application of any information provided. Always follow proper safety protocols when using tools, equipment, or procedures discussed in this video. Use this content at your own risk.")
![Coil vs. Plug: What Failed? [Proven Diagnostic Test]](https://i.ytimg.com/vi/uAIRx1Qx5ag/mqdefault.jpg "Coil vs. Plug: What Failed? [Proven Diagnostic Test]
Full video linked in this short
📘 Want to Learn More About Diagnostics?
Check out my field manual, Engine Performance Diagnostics, available as both an eBook and paperback at:
👉 https://linktr.ee/scannerdanner
🔧 Looking for Deeper Training?
Whether youre a DIYer, an aspiring tech, or a professional looking to sharpen your skills, join ScannerDanner Premium for next-level diagnostics training:
👉 Join Here – 14 Days for $1
https://www.scannerdanner.com/join-scannerdanner-premium.html
On ScannerDanner Premium, youll get:
*In-depth classroom lectures straight from my book
*Exclusive case studies with live vehicles pulled into class
*Real-time troubleshooting using proven methods
*Post help requests on our forum
*Fundamental training on diagnosing automotive electrical and electronics systems.
ScannerDanner Tools:
https://linktr.ee/scannerdanner
⚠️ Disclaimer:
ScannerDanner LLC is not responsible for misuse, unauthorized changes, or incorrect application of any information provided. Always follow proper safety protocols when using tools, equipment, or procedures discussed in this video. Use this content at your own risk.")
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