What was found
(CAN) DURING DEPARTURE TAKEOFF POWER WAS SET FOR 3-5 SECONDS, LT ELECTRONIC ENGINE CONTROL ANNUNCIATOR ILLUMINATED AND ENGINE REVERTED TO MANUAL MODE, TAKEOFF WAS ABORTED AT 50 KNOTS. ACFT WAS SENT TO MFG, TROUBLESHOOTING ONGOING. PERFORMED GROUND RUN AND CAPTURED FAULT FI-01. DCU REPLACED AND BOTH DCU INITIALISED. BOV TM FOUND TO BE ROOT CAUSE FOR THE EEC REVERSION. NEW BOV TM INSTALLED.