Gain a sound understanding of electronically controlled diesel engines as well as maintenance and diagnostic procedures. This book uses the ASE L2 "composite" diesel engine as a platform for fostering a detailed understanding of current truck engine management systems including electronic unit injector (EUI), hydraulically actuated electronic unit injector (HEUI), electronic unit pump (EUP), time-pressure injection (HPI-TP), computer-controlled pump-line-nozzle (PLN), and diesel common rail (CR) fuel management systems. Coverage is comprehensive in scope, addressing vehicle management computers, electronic service tools (ESTs), connector and wiring repair, and the principles of multiplexing, as well as each major system of the various fuel management systems used on today's diesel powered trucks.