As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOOP B ON ENG 2 HAS FAULT DURING THE FIRE TEST. GROUNDED - YES. TROUBLESHOT PER B737-900 FIM 26-10 TASK 805 AND B737-900 WDM 26-11-11 PG# 2. FOUND HARNESS MW0326 OPEN (BROKEN). REPLACED HARNESS MW0326 PER AMM 26-11-02 PG# 401, SYSTEM OPS CHECKED GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL.