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

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 me745 pinout free

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 Checking if the ECU is receiving power or