What was found
DOOR FLIGHT LOCK 4L EICAS STATUS #4 LEFT PASSENGER ENTRY DOOR FLIGHT LOCK COMMAND/FLT LK RLY/SENS OR DISAGREEMENT. DB PSEU 2 (R2) DB PSEU 2 (L2) COMPLIED WITH MEL DR OPENS FROM INSIDE ADD FAULT: 5200 TOMC APPROVES MEL 5211E FLIGHT LOCK AT DOOR 4L INOP PLACED ON MEL ADD FAULT: 5200 *DM* REF. FIM 52-11 TASK 805 & 809 FOR FAULT ISOLATION, ADDING PROX SENSOR AND M2400A18 FILTER MODULE CARD TO M&L IN CASE NEEDED. REF FIM 52-11 TASK 805, PERFORMED FLIGHT LOCK CONTROL TEST PPER AMM 52-11-26-740-801, LOCK ACTUATOR FAILS TEST, DOOR DOES NOT LOCK. SUSPECT BAD ACTUATOR M&E # 27-5212-9-0001