Key Switch and Ignition Knob Switch Signal Inspection (With Intelligent Key)

WARNING CHIME

Key Switch and Ignition Knob Switch Signal Inspection (With Intelligent Key, When Mechanical Key Is Used)


1. CHECK FUSE

Check if the key switch and ignition knob switch 10A fuse (No. 31, located in the fuse and fusible link box) is blown.
OK or NG
OK- GO TO 2.
NG- Be sure to repair the cause of malfunction before installing new fuse.

2. CHECK BCM INPUT SIGNAL

With CONSULT
1.Select "BCM".
2.With "DATA MONITOR" of "BUZZER", confirm "KEY ON SW" when the key is operated.
"KEY ON SW"
When key is inserted into ignition key cylinder: ON
When key is removed from ignition key cylinder: OFF

Without CONSULT





Check voltage between BCM harness connector and ground.





OK or NG
OK- Key switch and ignition knob switch signal is OK. Return to Initial Inspection and Diagnostic Overview.
NG- GO TO 3.

3. CHECK KEY SWITCH

1.Turn ignition switch OFF.
2.Disconnect key switch and ignition knob switch connector.





3.Check continuity between key switch and ignition knob switch terminals 1 and 2.





OK or NG
OK- GO TO 4.
NG- Replace key switch and ignition knob switch.

4. CHECK KEY SWITCH CIRCUIT

1.Disconnect BCM connector.





2.Check continuity between BCM harness connector (A) and key switch and ignition knob switch harness connector (B).





3.Check continuity between BCM harness connector (A) and ground.





OK or NG
OK- GO TO 5.
NG- Repair harness or connector.

5. CHECK KEY SWITCH POWER SUPPLY CIRCUIT






Check voltage between key switch and ignition knob switch harness connector and ground.





OK or NG
OK- Replace BCM. Service and Repair.
NG- Repair harness or connector.