What was found
DEPARTED ON FLIGHT 864 FROM HONOLULU TO MOLOKAI, SHORTLY AFTER ROTATION ON DEPARTURE, FUEL BOOST ON CAS MESSAGE BEGAN INTERMITTENTLY FLASHING ON PRIMARY FLIGHT DISPLAY (PFD). FUEL FLOW INDICATION ON MULTI-FUNCTION DISPLAY(MFD) APPEARED NORMAL, BUT CAS MESSAGE CONTINUED TO ILLUMINATE INTERMITTENTLY. IN RESPONSE, THE FUEL BOOST PUMP TURNED ON AND IGNITION TURNED ON. CONTINUED TO CLIMB AS USUAL WITH NORMAL FUEL FLOW INDICATIONS. RETURNED THE BOOST PUMP TO NORM & TURNED THE IGNITION OFF. IMMEDIATELY AFTER, CAS MESSAGE PERSISTED & BEGAN APPEARING MORE FREQUENTLY THAN INITIALLY OBSERVED. CONTACTED ATC, REQUESTED VECTORS BACK TO HONOLULU, & RETURNED FOR AN UNEVENTFUL LANDING. AFTER CLEARING THE RUNWAY, SHUT OFF THE BOOST PUMP, & A FUEL PRESSURE LOW CAS MESSAGE IMMEDIATELY APPEARED ON THE PFD.