Pump Motor
WARNING: This page is about a different car, the 2002 Honda CR-V. However, it is still accessible from the selected car via links, so may be relevant.
The pump motor operates when the ABS is functioning. The ABS control unit checks the pump motor operation when the vehicle is started and driven over 7 mph (10 km/h) the first time after ignition switch is turned ON. You may hear the motor operate at this time, but it is normal.