Part of the popular Todays Technician series, this advanced text provides an in-depth guide to performance-related topics such as drivability, emissions testing, and engine diagnostics. In addition to a thorough review of on-board diagnostic generation II (OBD II) continuous monitors and non-continuous monitors strategies, the text includes a chapter on emission control and evaporative systems, as well as detailed information on OBD II generic diagnostic trouble codes (DTC) identification and diagnosis and malfunction indicator light strategies.To help readers gain essential knowledge while honing practical job skills, the text includes both a Classroom Manual and a hands-on Shop Manual. The Second Edition also features new and updated material to help readers master the latest technology and industry trends, including expanded coverage of variable valve and camshaft timing designs, a review of variable displacement and variable lift engine designs currently in production, and discussion of advanced use of on-board diagnostic scanners and digital storage oscilloscopes.