Diagnosis Procedure

KEY SWITCH


Description

Key switch detects that mechanical key is inserted into the key cylinder, and then transmits the signal to BCM .





KEY SWITCH


Diagnosis Procedure

1.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from key cylinder.
2. Disconnect key switch connector.
3. Check voltage between ignition knob switch, key switch and key lock solenoid harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace harness.
2.CHECK KEY SWITCH SIGNAL CIRCUIT
1. Check continuity between BCM harness connector and ignition knob switch, key switch and key lock solenoid connector.





2. Check continuity between key switch and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK KEY SWITCH
Check key switch function. Component Inspection.
Is the inspection result normal?
yes - GO TO 4.
NO - Replace ignition knob switch, key switch and key lock solenoid.
4.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END