How to Test 3 WIRE Ignition Coil with Multimeter & Oscilloscope | Suzuki Three-Wire Ignition Coil

In this video I explain how to test and diagnose the 3 wire ignition coil on Suzuki. We already have some videos for testing different types of ignition coils, but this video is specifically for coil on plugs with three wires. In this video we will have a look at the wiring diagram to see what are the differences between coil on plugs with 2 wires and 3 wires. Then I explain how to test the wiring on ignition coil connector, after that, I use an oscilloscope to diagnose the ignition coil. I perform this diagnostic on a Suzuki Alto 2012.