As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING TC 72470004, NOTED LOOP WIRE HARNESS ON INBOARD SIDE, SHIELDING DAMAGED. GROUNDED - YES. REMOVED FIRE DETECTION HARNESS ON ENG #2 MW0326 PARTIAL INSTALL REF B737-900 AMM 26-11-02 ALL ELECTRICAL CONNECTIONS & AFT INBD CLAMP & ISOLATOR REQUIRE INSTALLATION. COMPLETED #2 ENGINE CORE FIRE DETECTION HARNESS INSTALLATION PER MM 26-11-02-400-802, HARNESS MW0326. ENGINE FIRE DETECTION SYSTEM OPS CKS NORMAL PER B737-900 AMM 26-11-00-710-801.