What was found
REF TC 78273000, 1 ENG MAINTENANCE FAULT 73-31371, UPPER EGT SECTION READS HIGH ECONOMIC FAULT. ACFT GROUNDED. UNABLE TO DUPLICATE DEFECT. ELECTRONIC ENGINE CONTROL BITE TEST IAW AMM 73-21-00-740-801-F00 SHOWED NO FAULTS LOGGED IN THE LAST TEN STARTS. ACCOMPLISHED NR 1 ENGINE EGT CONNECTOR CLEANING IAW AMM 77-21-00-140-801. ALL CONNECTORS IN TABLE 2 CLEANED. ON CJ9 HARNESS CONNECTOR DP0912, T495S1 PROBE CONNECTOR FOUND SOCKET TENSION NON-EXISTENT. R & R NR 1 ENGINE CJ9 HARNESS IAW AMM 73-21-06-000-803-F00/73-21-06-400-803-F00. PERFORMED FADEC TEST IAW AMM 73-21-00-700-802-F00, ELECTRONIC ENGINE TEST IAW AMM 73-21-00-700-804-F00, IDENT/CONFIG TEST IAW AMM 73-21-00-700-808-F00, TEST 12, ACTUATORS TEST IAW AMM 71-00-00-700-807-F00, AND ELECTRONIC ENGINE CONTROL DISCRETES TEST IAW AMM 73-21-00-700-809-F00. ALL TESTS PASS. EGT READINGS BEFORE CLEANING: S1-57.87; S2-22.50; S3-24.37; S4-79.25. EGT READINGS AFTER CLEANING AND HARNESS REPLACEMENT: S1-23.62; S2-10.12; S3-10.87; S4-27.75.