CHAPTER 14

Types of Ignition Systems

Learning Objectives

• 14-01 Categorize automotive ignition system components.
• 14-02 Distinguish the types of sensor used in ignition systems.
• 14-03 Explore the components of distributorless ignition systems.
• 14-04 Describe crankshaft position and camshaft position sensor operation.
• 14-05 Analyze Compression Sense Ignition systems.
• 14-06 Explain the principles behind coil-on-plug/direct-ignition systems.
• 14-07 Find ignition timing and knock control on a computer-controlled ignition system.

ASE Education Foundation Tasks

See Appendix A to view the 2017 ASE Education Foundation Automobile Accreditation Task List Correlation Guide.

You Are the Automotive Technician

A 2009 Ford F-150 5.4 L truck comes into your repair facility because of a misfire on Cylinder 3. As you are looking at this truck, you notice that one of the coils is sparking against the cylinder head and causing a loud clicking sound. The customer says that the vehicle is running fine; it just has a check engine light on. But when he tried to pull his boat out of the water, the truck stumbled and started making a noticeable vibration. What should be your first step in diagnosing this vehicle?

1. Scan the vehicle to look for codes.
2. Replace the engine mount because of the vibration.
3. Find a boat ramp and replicate the stumble complaint.