What was found
REF LOG 11903751, EGT CONNECTOR CLEANING WAS ACCOMPLISHED PER FIM TASK 77-21-00-839-007. POST CLEANING RECHECK PER T/C 78273000, FOUND FAULT 77-20861 ON LEGS 1, 2, AND 3 (ENGINE 1). GROUNDED - YES. PERFORMED EGT SYSTEM RESISTANCE CHECK (ENG NR 1) REF AMM 77-21-01-200-801-F00. HIGH RESISTANCE FROM CJ10 + T49.5 PROBE (29K OHMS). COULD NOT ISOLATE FAULTY COMPONENT. RESISTANCE WENT TO NORMAL AFTER DISCONNECTING CJ10 FROM T49.5 PROBE AND RECONNECTING. AS A PRECAUTION, REMOVED/REPLACED CJ10 AND S3 PROBE REF AMM 73-21-06, 73-21-01. ALL RELATED TESTS CHECK NORMAL.