What was found
ENG CONTROL LIGHT ILLUMINATED ON OVERHEAD PANEL WHEN STARTING #1 ENG ON TAXI OUT. GROUNDED - YES. COMPLIED WITH EEC BITE PROCEDURE FIM 73-00-TASK 801. FOUND FAULT CODE 73-31391, COMPLIED WITH FIM 73-22 TASK 807. AIRPLANE MODLE SIGNAL IS OUT OF RANG. CLEANED NO 1 ENG EEC CONNECTOR J-3 + J-4. COMPLIED WITH EEC TASK 73-21-00-700-807-F00. FAULT 73-31391. REMAINS AFTER NO.1 ENG RUN. ENG 1 ILLUMINATE CONTROL LITE ON OVERHEAD DURING ENG1. START. SEAMC VERIFIED DEFECT , REPLACED J4 HARNESS, NO HELP. REMOVED AND REPLACED #1 ENG EEC REF MM 73-21-60, ALL TEST PASSED.NO ENG CONTROL LIGHT. NO FAULTS LOGGED . J4 HARNESS OPS CHECKS PASSED REF MM 71-51-03. 4 C/B'S OPENED AND CLOSED.