As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE OVERHEAT WILL NOT TEST. GROUNDED - YES. ON DEFERRAL. INSPECTED ALL CONNECTIONS ASSOCIATED WITH LOOP A CW B737-800 FIM 26-10 TASK 805. FOUND MW0315 CORE HARNESS RESISTANCE FLUXUATES TO OPEN AND BACK WHEN TAPPED ON. REMOVED AND REPLACED MW0315 REF B737-800 AMM 26-11-02. #2 ENGINE FIRE DETECTION SYSTEM GROUND VERIFICATION PASSED. REF AMM 26-11-00---B #2 FIRELOOP SW MOVED TO CENTER POSITION.