What was found
(CAN) AIRCRAFT RETURNED TO GATE. NR 2 ENGINE FAULT 77-10852 (749.5) SENSOR OUT OF RANGE. CARRIED OUT FIM TASK 77-21 TASK 802. PERFORMED EEC TEST IAW 73-21-00-700-804-FO FAULT IS NOT ACTIVE, MEASURED 7.852 AT CONNECTOR DP0909. CLEANED CONNECTORS DP0909 AND DP0913. SYSTEM TESTS SERVICEABLE. DMI CLEARED. ENGINE NR 2 HAD FLASHING WHITE EGT BOX ON STARTUP. ABORTED ENGINE START. FIM TASK 77-21 T. 801 CARRIED OUT. LONGTIME EGT FAULT 77-10852 INDICATED. DEFERED TO MCC N/R TO BE RECTIFIED WITHIN 42.5 HOURS.