AUTOMATED ELEVATOR SAFETY CHAIN DIAGNOSIS

An illustrative example embodiment of an elevator system (20) includes an elevator car (22) situated for movement among a plurality of landings (24). The elevator car (22) includes a car door (26) and a door mover (28). A door interlock (32) associated with a landing door (30) at each of the landings is configured to couple the associated landing door (30) with the car door (26). The door interlocks (32) respectively include a lock switch (36). A controller (60) is configured to: cause the elevator car (22) to move to at least one of the landings (24); when the elevator car (22) is at the at least one landing (24), cause the door mover (28) to instigate movement of the door interlock (32) sufficient to at least temporarily change a position of the lock switch (36); and locate a malfunctioning one of the lock switches (36) at one of the landings (24) based on the movement of the door interlock (32).