What was found
FLIGHT 9707. MSG " ENG 2 T2 HEAT FAIL " APPEARED WHILE PARKED AT GATE. PLACED ON MEL 73-21-17. MEL CLEARED 5/16 BY INTERROGATED CMC, FOUND FAULTS 73216217E2A AND 73216217E2B. PERFORMED E175 FIM 73-21-00-810-953-A WIRING CHECKS STEPS 6.AK-BC. NDN. REPLACED RELAY K0187 AND K0188 PER STEPS 6.BD-BK. NO HELP. FAULT REMAINS. REINSTALLED ORIGINAL RELAYS PER E175 SWPM 20-32-01. AS PRECAUTION, R+R #2 ENG FADEC PER E175 GE LMM 73-00-00-800-801. NO HELP. FAULT RETURNS R+R #2 ENGINE T2 SENSOR PER E175 GE LMM 77-00-00-800-808. PERFORMED FUNCTIONAL CHECK PER E175 GE LMM 72-00-00-700-802 ITEM 5.C. FAULT NO LONGER PRESENT. FUNCTIONAL TEST GOOD. RETURNED TO SERVICE.