Professional Motorcycle Electrical Diagnostics https://payhip.com/b/ow4GZ
Struggling with a "No Spark" issue on your motorcycle? If you’ve checked the basics and still have no ignition, it’s time to look at the CDI (ECU) and the ignition coil. In this video, I demonstrate how to diagnose a primary ignition circuit failure by bypassing the CDI with a 12V signal to verify if the coil is actually functional.
What you will learn in this diagnostic guide:
How to check for a 12V input signal at the ignition coil.
Step-by-step instructions for back-probing the wiring connector.
The "CDI Bypass" trick: Using a direct 12V battery signal to trigger a spark.
How to safely test the ignition coil's magnetic field without even looking at the spark plug.
Using a magnetic field tester for fast, professional-grade diagnostics.
Timestamps for Fast Troubleshooting:
00:00 - Introduction: Initial "No Spark" Checks
00:18 - Testing the CDI/ECU Signal to the Ignition Coil
00:30 - Back-Probing the Signal Wire (Black Wire Test)
00:54 - How to Bypass the CDI with a 12V Battery Signal
01:21 - Visual Confirmation: Seeing the Spark Triggered Manually
02:10 - Pro Tip: Using a Magnetic Field Tester for Diagnosis
02:40 - Results: Verifying the Coil is Energizing
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Safety Warning: Be extremely careful when tapping 12V power directly to signal wires. Do it briefly to avoid blowing fuses or damaging other electrical components.
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