Covers all models of 318iC 318iS 323l 323iC 323iS 325l 325iC 325iS 325iX 328l328iC328iW M3 and Z3.This series offers do-it-yourselfers of all levels TOTAL maintenance, service, and repair information in an easy to use format. Each manual contains: trouble codes, electronic engine controls, maintenance schedules, diagnostic charts, wiring diagrams, tune up specifications, and much more.