Key Switch Signal Inspection (Without Intelligent Key)

Check if the key switch and key lock solenoid 10A fuse [No. 14, located in the fuse block (J/B)] is blown.

OK or NG 

OK >> GO TO 2.

NG >> Be sure to repair the cause of malfunction before installing new fuse. Refer to " POWER SUPPLY ROUTING CIRCUIT  "  .

With CONSULT-II 

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 

   Fig 1: CONSULT-II Display - Data Monitor

   

   Without CONSULT-II 

   Check voltage between BCM harness connector and ground.

   TERMINALS VOLTAGE REFERENCE
   
   

   Terminals			Condition	Voltage (Approx.)
   (+)		(-)
   BCM connector	Terminal
   M18	37	Ground	Key is inserted	Battery voltage
   			Key is removed	0 V

OK or NG 

OK >> Key switch signal is OK. Return to "SYMPTOM CHART ".

NG >> GO TO 3.

Fig 2: Checking Voltage Between BCM Harness Connector And Ground

1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid connector.
3. Check continuity between key switch and key lock solenoid terminals 1 and 2.
   TERMINALS CONTINUITY REFERENCE
   
   

   Terminals		Condition	Continuity
   1	2	When key is inserted into ignition key cylinder	Yes
   		When key is removed from ignition key cylinder	No

OK or NG 

OK >> GO TO 4.

NG >> Replace key switch and key lock solenoid.

Fig 3: Checking Continuity Between Key Switch And Key Lock Solenoid Terminals 1 And 2

1. Disconnect BCM connector.
2. Check continuity between BCM harness connector (A) and key switch and key lock solenoid harness connector (B).
   TERMINALS CONTINUITY REFERENCE
   
   

   A		B		Continuity
   Connector	Terminal	Connector	Terminal
   M18	37	M27	1	Yes

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

   A		Ground	Continuity
   Connector	Terminal
   M18	37		No

   Fig 4: Checking Continuity Between BCM Connector And Key Switch And Key Lock Solenoid Connector

   

OK or NG 

OK >> GO TO 5.

NG >> Repair harness or connector.

Check voltage between key switch and key lock solenoid harness connector and ground.

OK or NG 

OK >> Replace BCM. Refer to " REMOVAL AND INSTALLATION OF BCM  "  .

NG >> Repair harness or connector.

Fig 5: Checking Voltage Between Key Switch And Key Lock Solenoid Connector And Ground