What was found
JUST STARTED ADDING POWER FOR TAKEOFF-LOW POWER LOW AIRSPEED AND RECEIVED A POWERPLANT MESSAGE. ABORTED TAKEOFF, RETURNED TO GATE. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND CURRENT FAULTS 719A AND 719B FAULT CODES (3540). CLEARED FAULT ON NR 1 ENGINE (719A & 719B) FOR PURPOSES OF MTX TAXI TO HANGER. DUE TO RECENT HISTORY & TROUBLESHOOTING, R & R NR 1 ENGINE FUEL CONT ELECTRICAL HARNESS, IAW AMM 73-21-11-000-801/400-801 AS A PRECAUTIONARY MEASURE. PERFORMED ENGINE RUN AT POWER SETTINGS BETWEEN DISC & RATING. FAULTS 719A/B DID NOT REOCCUR. RETURNED TO SERVICE.