W116 280SE ECU / Fuel pump

Hello members!

W116 280SE -74.
Original cause:
Small vibration when accelerating.
Checked:
Injection nozzles. Ok.
Maps sensor. Ok (checked by Volker).
Smoke test. Ok.
After the previous steps, the engine started.

Next:
Distributor, completely removed on the table, but only the
trigger contacts were opened. Ok. (Norbert's tool).
After this, the engine will not start!?
The fuel pump does not make a sound 2 seconds before starting.

Next, from the disconnected connector of the Ecu:
Pin. 16 - 11. 12.7 V.
Pin 24 - 11. 12.7 V.
Pin 16 - 19. 51 ohms.
Power on, pin 16 - 19. 12.7 V.

Connected to ECU and power on before starting 16 - 11. 0 V.

Questions:
Is that 51 ohms the correct value?
Is the ECU damaged?
ECU nr: 0 280 001 015.

Best regards
Jukka