The Bosch ME7.4.5 ECU, commonly used in PSA group vehicles (Peugeot/Citroën) with the 1.6L 16V engine, uses three main connectors labeled A, B, and C Essential Bench Connections
What is ME7.4.5 ECU?
This handbook summarizes the ME7.4.5 engine control unit (ECU) pinout, typical signal roles, wiring notes, diagnostic tips, and safe-handling procedures. It’s written for experienced technicians and advanced hobbyists working on vehicles that use Bosch ME7.4.5 ECUs (commonly found in many late-1990s to 2000s gasoline-powered European cars). Treat this as a reference supplement to factory service manuals — verify vehicle-specific diagrams before wiring or testing. me7.4.5 pinout
The Bosch ME7.4.5 engine control unit (ECU) is widely used in Peugeot and Citroën vehicles. Understanding its pinout is essential for bench flashing, diagnostics, and repairs. Core Power & Communication Pinout The Bosch ME7
: One specific resistor on the ECU board must be removed to enable the mode. Professional Tools Cooling fan control outputs (thermostatic/fan relay control)
Disclaimer: Pins beyond 74 are often empty on manual 1.8T ME7.4.5 ECUs. For A/T cars, pins 84-89 may carry TCU CAN data.