Ecu+design+pinout+full — Link

Low-side drivers (injectors, idle air control), high-side drivers (solenoids, relays), and PWM (Pulse Width Modulation) outputs (boost control, VVT).

. For anyone diving into automotive electronics, understanding these pinouts is the "Rosetta Stone" for Diagnostics, Tuning, and Repair Core Components of an ECU Pinout ecu+design+pinout+full