What was found
WE STARTED THE ENGINES AT 2120 WITHOUT ANY PROBLEM. WE DID ALL THE CHECKS BEFORE THE TAXI. THEN WE STARTED THE TAXI TO RUNWAY 17L AT KPWA, AND THE PLANE PASSED ALL THE CHECKS. WE WERE CLEARED TO TAKE OFF FROM RUNWAY 17L, WE DID THE LAST CHECKS BEFORE TAKE OFF. ONCE LINED UP FROM TAKEOFF I STARTED TO GIVE TAKEOFF POWER AND THE LEFT ENG EFC LIGHT CAME ON, WE TURNED IT OFF, THE ON AND IT STAYED OFF. AFTER THAT WE STARTED THE TAKEOFF AND IN THE TAKEOFF RUN THE LEFT ENG EFC LIGHT AND THE RUDER BOOST LIGHT CAME ON, FOR THAT REASON AND FOR SAFETY WE ABORTED THE TAKEOFF.