143 Copyright by Goodheart-Willcox Co., Inc. After studying this chapter, you will be able to: • Explain the purpose of the ignition coil. • Describe the purpose of the ignition control module. • Identify ignition-triggering devices. • Explain how spark is developed in distributorless ignition systems. • Describe computerized spark advance systems. • List the major components of the secondary ignition circuit. coil-near-plug ignition system coil-on-plug (COP) ignition system directional spark plug distributorless ignition system (DIS) dual coil-on-plug ignition system electronic ignition system Hall-effect switch heat range ignition coil ignition control module ignition system ignition timing ignition timing advance system integrated direct ignition system ion-sensing ignition system magnetic pickup sensor misfire monitor photoelectric sensor power transistor primary ignition circuit primary winding primary wiring primary wiring connector secondary ignition circuit secondary windings secondary wires spark plug triggering device waste spark ignition system Technical Terms Ignition System Fundamentals Chapter 8