Check Key Switch Circuit (With Intelligent Key)

1. CHECK KEY SWITCH POWER SUPPLY CIRCUIT (WITH CONSULT-II) 

   With CONSULT-II 

   Touch "BCM". With "IGN KEY SW" on the DATA MONITOR, Check ON/OFF operation.

   *: Refer to "DATA MONITOR ".

   Fig 1: Identifying CONSULT II Display - DATA MONITOR

   Courtesy of NISSAN MOTOR CO., U.S.A.
   IGN KEY SW (WITH CONSULT-II)
   
   

   Monitor item [OPERATION or UNIT]		Contents
   IGN KEY SW*	"ON/OFF"	Key inserted (ON)/key removed (OFF) status judged from the key-in detection switch is displayed.

   OK or NG 

   OK: Key switch circuit is OK.

   NG: GO TO 2.

2. CHECK KEY SWITCH POWER SUPPLY CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect key switch and ignition knob switch connector.
   3. Check voltage between key switch and ignition knob switch connector M22 terminal 3 and ground.

      3 (L/R) - Ground : Battery voltage. 

      Fig 2: Identifying Voltage Between Key Switch And Ignition Knob Switch Connector M22 Terminal 3 And Ground

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   OK: GO TO 3.

   NG: Check harness between key switch and fuse.

3. CHECK KEY SWITCH 

   Check continuity between key switch and ignition knob switch connector M22 terminal 3 and 4.

   Fig 3: Identifying Continuity Between Key Switch And Ignition Knob Switch Connector M118 Terminals 3 And 4

   Courtesy of NISSAN MOTOR CO., U.S.A.
   KEY SWITCH
   
   

   Connector	Terminal		Condition	Continuity
   M22	3	4	Key is inserted in ignition key cylinder.	Yes
   			Key is removed from ignition key cylinder.	No

   OK or NG 

   OK: GO TO 4.

   NG: Replace key switch and ignition knob switch.

4. CHECK HARNESS CONTINUITY 

1. Disconnect key switch and ignition knob switch connector and BCM connector.
2. Check continuity between key switch and ignition knob switch connector M22 terminal 4 and BCM connector M3 terminal 37.

   4 (B/W) - 37 (B/W) : Continuity should exist. 

3. Check continuity between key switch and ignition knob switch connector M22 terminal 4 and ground.

   4 (B/W) - Ground : Continuity should not exist. 

   Fig 4: Identifying Continuity Between Key Switch And Ignition Knob Switch Connector M22 Terminal 4 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Key switch circuit is OK.

NG: Repair or replace harness between key switch and ignition knob switch and BCM.