The is a common Engine Control Unit (ECU) found in PSA Group vehicles (Citroën and Peugeot), specifically managing 1.6L 16V engines like the TU5JP4 . 🛠️ Key Connection Feature: Boot Mode
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
: To enable Boot Mode, you must internally modify the board by adding two 6k8 ohm resistors and removing one existing resistor. MCU : This ECU typically uses the ST10F275 microprocessor. 📋 General Pinout Overview The is a common Engine Control Unit (ECU)
Note: Some variant ECUs (like for automatic transmissions) may have extra pins for TCU communication. The manual transmission pinout is covered here. Treat this as a reference supplement to factory
The Bosch Motronic ME7.4.5 is one of the most iconic Engine Control Units (ECUs) from the late 1990s and early 2000s. Found primarily in Volkswagen and Audi Group vehicles (VAG), including the Mk4 Golf GTI (1.8T), Audi TT (8N), Audi A3 (8L), and the SEAT Leon Cupra, this ECU is legendary among tuners and DIY mechanics. Understanding the is critical for everything from wiring an aftermarket wideband sensor to diagnosing a no-start condition or swapping the engine into a classic car.