Generally, on LEVEL 8 ecu's, the phase sensor MUST work in order to initially start the engine.
If it fails during running, then the engine ususally continues to run.

If the fuel pump runs when cranking, the crank sensor is ok.

To check the phase sensor,
Re connect it !

Check with a resistance meter, pins 5 and 23 should read between 500 and 1200 ohms.
(ECU removed)

Switch the meter to AC volts, crank the engine and you should see an intermittent voltage of around 1.5 to 5 volts
while cranking the engine.

Good advice: NEVER run the car WITHOUT the phase sensor connected !!