As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: EPSU (11WL) INDICATES A UNIT FAULT WHEN PERFORMING BITE CHECK. FOUND EMERGENCY LIGHT SEAT TO WALL CABLE AT ROW 9ABC SHORTED TO GROUND CAUSING UNIT FAULT INDICATION ON EPSU (11WL). MAINTENANCE REPLACED SEAT TO WALL CABLE AT ROW 9ABC IAW AMM 33-51-19-400-001-A.