Regarding Wiring Diagram information, refer to DLK "Wiring Diagram".
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Is the inspection result normal?
YES >> Front door lock key cylinder switch LH is OK.
NO >> GO TO 2
2.CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to DLK "Component Inspection".
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI "Intermittent Incident".
NO >> Replace front door lock key cylinder switch LH.
Component Inspection
1.CHECK DOOR KEY CYLINDER SWITCH
Check front door lock key cylinder switch LH.
Is the inspection result normal?
YES >> Key cylinder switch is OK.
NO >> Replace front door lock key cylinder switch LH.