Descrição: (Description)
This document provides an 8-step process for diagnosing automotive electronic control units (ECUs) without much effort. The steps include: 1) Creating a technical sheet with vehicle details; 2) Identifying the module model; 3) Referring to the module's electrical diagram; 4) Measuring power and ground continuity; 5) Measuring supply voltages; 6) Checking the voltage regulator; 7) Measuring injection driver voltage; and 8) Measuring processor and memory voltages. Following these steps allows for a preliminary diagnosis of common ECU faults through real measurements and analysis. More specific issues may require additional diagnostic tools and training.