Connector B (32-way Black) – Pin H4 (or the metal casing of the ECU). 3. Communication Lines

The ME7.4.5 is a widely used Engine Control Unit for 1.6L 16V petrol engines (like the NFU engine code). Unlike older systems, this ECU uses a three-plug configuration, often labeled as , 32-way Black , and 48-way Brown connectors. Why You Need the Pinout

The ME7.4.5 communicates primarily via CAN bus for diagnostics and flashing. Connector A (32-way Grey) – Pin B3 CAN Low: Connector A (32-way Grey) – Pin C3

Output signals for injectors, ignition coils, and auxiliary actuators. Pro-Tips for Bench Work

Reading or writing the flash memory without having the ECU installed in the car.

Preparing a used ECU to work with a different BSI/Key set. Essential ME7.4.5 Bench Pinout (Power & Communication)

With this , you have the basic map required to interface with one of PSA’s most common ECUs. Whether you’re a hobbyist tuner or a professional mechanic, mastering these connections is the first step toward advanced vehicle diagnostics.

To communicate with the ECU using a tool like KESS, KTAG, or Galletto on your workbench, you generally only need to connect to five or six specific pins. 1. Power Supply (+12V)

Checking if the ECU is receiving power or ground when the car won't start.