What was found
DURING TAKEOFF THE FLIGHT CREW RECEIVED A LEFT ENGINE ELECTRONIC CONTROL UNIT FAIL WARNING MESSAGE. AFTER ABORTING THE TAKEOFF A LEFT GENERATOR FAIL AND RIGHT HX FAN FAIL MESSAGE ALSO ILLUMINATED. THE FLIGHT CREW NOTED A MIST IN THE CABIN WHICH DISSIPATED AS THE AIR CONDITIONING PACKS WERE SELECTED OFF. MAINTENANCE CLEANED THE LEFT ELECTRONIC CONTROL UNIT CONNECTOR AND DEFERRED PER MEL THE RIGHT HX FAN. OPERATIONAL CHECKS WERE COMPLETED AND THE AIRCRAFT RELEASED FOR SERVICE.