The toilet's water supply and the pump are separate processes. Record where the sound comes from and whether water is still entering the cistern or bowl.
What the observation means
A continuous water feed can keep supplying a pump, but the motor should not be diagnosed from every bathroom noise. Do not remove the pump cover to listen more closely.
A useful next step
Describe the visible water movement and sound location. If drainage is impaired, stop using the connected system. A leaking toilet mechanism and a pump fault may need different attention, so keep their symptoms separate when arranging help.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.