This manual covers the 3 Series, specifically the E30 chassis, produced from 1983 to 1992. This iconic model, available in variants such as the 318i, 318is, 318ic, 325, 325e, and 325is, is celebrated for its driver-focused dynamics and robust engineering, establishing a significant legacy. The E30 represents a pivotal point in history, offering a blend of performance and practicality that has cemented its status as a modern classic among automotive enthusiasts.

This Electronic Troubleshooting Manual (ETM) provides an in-depth resource focused on the electrical systems and troubleshooting of the E30. It covers a wide array of components and systems, including engine management, lighting, instrumentation, climate control, power accessories, audio systems, and safety systems like ABS. The manual includes detailed wiring diagrams, component testing procedures, connector pinouts, and diagnostic guidance, making it an essential tool for professional technicians and advanced DIY enthusiasts seeking to maintain and repair the electrical aspects of these vehicles.