Check Key Switch

With CONSULT-II 

Check ignition key switch "KEY ON SW" in "DATA MONITOR" mode with CONSULT-II.

• When key is inserted in ignition key cylinder

  KEY ON SW: ON 

• When key is removed from ignition key cylinder

  KEY ON SW: OFF 

  Fig 1: Displaying DATA MONITOR Mode On Consult-II Screen

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

Without CONSULT-II 

Check voltage between BCM connector M1 terminal 37 (B/P) and ground.

Fig 2: Checking Key Switch Input Signal Voltage (Without CONSULT-II)

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

OK or NG 

1. OK: Key switch circuit is OK.
2. NG: GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect key switch connector.
3. Check continuity between key switch terminals 1 and 2.
   TERMINAL CONTINUITY
   
   

   Key switch condition	Continuity
   Key switch is "ON". (Key is inserted in IGN key cylinder.)	Yes
   Key switch is "OFF". (Key is removed from IGN key cylinder.)	No

   Fig 3: Checking Key Switch Continuity (Without Intelligent Key)

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

OK or NG 

1. OK: Check the following.
   • 15A fuse [No. 22, located in fuse block (J/B)]
   • Harness for open or short between key switch and fuse
   • Harness for open or short between BCM and key switch
2. NG: Replace key switch.