Disconnect main power window and door lock/unlock switch and front door lock assembly LH (key cylinder switch).
Check continuity between main power window and door lock/unlock switch connector (A) and front door lock assembly LH (key cylinder switch) connector (B).
Check continuity between main power window and door lock/unlock switch connector (A) and ground.
Is the Inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
Check continuity between front door lock assembly LH (key cylinder switch) connector and ground.
Is the Inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.