Key Switch (Intelligent Key Unit Input) Check

INTELLIGENT KEY SYSTEM


Key Switch (Intelligent Key Unit Input) Check

1.CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-III
Check key switch ("KEY SW") in "DATA MONITOR" mode with CONSULT-III.





Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.





3. Check voltage between Intelligent Key unit and ground.





OK or NG
OK - Key switch circuit is OK.
NG - GO TO 2
2.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch and ground.










OK or NG
OK - GO TO 3
NG - Repair or replace key switch and ignition knob switch power supply circuit.
3.CHECK KEY SWITCH





Check continuity of key switch and ignition knob switch.





OK or NG
OK - GO TO 4
NG - Replace key cylinder assembly (built-in key switch).
4.CHECK KEY SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit and key switch and ignition knob switch.










3. Check continuity between Intelligent Key unit and ground.






OK or NG
OK - Check the condition of harness and harness connector.
NG - Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.