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Cad Cam (Hong Kong)

Always count the pins carefully on the ECU side, not just the cable side, as the numbering is often mirrored. Conclusion

Primarily handles communication (CAN/K-Line) and some sensor inputs (Throttle position, etc.).

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

You must provide power to both the permanent battery pin and the ignition switch pin. Connector B (32-way Black) – Pin G1

Power supply, main grounds, and core engine sensors.

Ensure your power source provides a steady 12.5V to 13.5V. Voltage drops during a "write" process can brick the ECU.

Connector B (32-way Black) – Pin F4 2. Ground (GND)

Connector A (32-way Grey) – Pin H3 (Note: Not all tools use K-line for this specific ECU; most prefer CAN). Full Connector Layout Overview

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