Automotive & Heavy-Duty ECU Board Repair

Master the electronics behind automotive and heavy-duty Engine Control Units with this 212-page illustrated technical guide designed for automotive technicians, ECU repair specialists, diagnostic professionals, and electronics enthusiasts.

This manual starts with the essential building blocks of ECU electronics — including resistors, capacitors, diodes, transistors, MOSFETs, inductors, ferrite beads, and crystal oscillators — before moving into detailed real-world ECU circuit-board analysis.

Learn how to identify electronic components, understand their function inside an ECU, use a multimeter for component testing, recognize power-supply and driver circuits, and locate critical areas such as injector drivers, CAN communication circuits, boost stages, voltage regulators, current-sensing circuits, memory, CPUs, and protection components.

The practical ECU section includes detailed board overviews and internal component identification for systems including:

Bosch EDC7 • EDC16C39 • EDC16UC40 • EDC16C8 • EDC17C55 • EDC17CV44 • Cummins CM800 • CM2220 • CM2880 • Hino Denso C31 • Delphi DCM3.2 • Weichai • Xichai • Yuchai • EControls and more.

Each illustrated example helps you understand how real ECU boards are organized and where important electronic circuits and components are located.

What You'll Learn

• ECU electronic component fundamentals
• SMD component identification
• Diode, transistor and MOSFET testing
• Power-supply and voltage-regulation circuits
• Injector high-side and low-side driver circuits
• Boost and high-voltage ECU circuits
• CAN communication and signal-processing sections
• Current-sensing and protection circuits
• CPU, RAM, EEPROM and memory identification
• Real automotive and heavy-duty ECU board layouts
• ECU disassembly examples and repair-tool overview

Whether you work with cars, commercial vehicles, diesel engines or heavy-duty ECUs, this guide provides a practical visual reference to help you better understand ECU electronics and approach circuit-board diagnosis with greater confidence.

212 Pages • Fully Illustrated • Automotive & Heavy-Duty • Professional ECU Reference Guide