As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: DURING PERIODIC SERVICE CHECK THE EMERGENCY LIGHTING SYSTEM TEST FAILED. MAINTENANCE FOUND THE R4 DOOR SLIDE ELECTRICAL HARNESS QUICK RELEASE CONNECTOR DISCONNECTED AND RE-CONNECTED IT PER AMM 25-62-44. A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED.