Diagnosing 3- and 4-Wire Coil-on-Plug Systems | Pro Training Power Hour

In this session of Pro Training Power Hour, Pro Training Instructor Luis Ruiz breaks down the difference between 3-wire and 4-wire ignition coils and runs through case studies on different coil-on-plug systems.

Chapters:
0:00 Introduction
0:12 Learning Objectives
2:00 How Ignition Coils Work
2:27 Base Timing Control
3:16 Enhanced Ignition Timing Control
3:59 Creating Power
4:33 Spark Check Fail
5:25 Typical 3-wire Coil Wiring
5:56 Typical 4-wire Coil Wiring
7:03 Nissan 3-wire Coil Case Study
10:20 What can cause a coil to melt?
11:58 Ford 3-wire Coil
16:03 Toyota 4-wire Coil Case Study
23:25 Toyota 3-wire Coil
24:24 GM 4-wire Coil Case Study
28:03 Ignition Coil Control Review
30:54 Community Questions

Pro Training Power Hour is a free, live virtual technical series that features live demonstrations from Standard® Pro Trainers. Each session will provide you with a systems overview, diagnostic recommendations and installation tips.

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