As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING ASA TASK CARD # N8420000, TOP LEFT T49.5 S4 CONNECTOR SOCKET RETAINER FOUND LOOSE. CJ10 HARNESS REQUIRES REPLACEMENT. GROUNDED - YES. REPLACED #1 ENGINE CJ10 HARNESS REF B737-800 AMM 73-21-06/401. FADEC SYSTEM TEST PASSED WITH NO FAULTS FOUND REF AMM TASK 73-21-00-700-802-F00.