Key Switch Signal Inspection (Without Intelligent Key)

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 to ignition key cylinder : ON 

   When key is removed from ignition key cylinder : OFF 

   Fig 1: Displaying Data Monitor

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

Without CONSULT-II 

Check voltage between BCM harness connector M3 terminal 37 and ground.

37 - Ground 

When key is inserted to ignition key cylinder : Approx. 12 V 

When key is removed from ignition key cylinder : Approx. 0 V 

OK or NG 

OK : INSPECTION END

NG : GO TO 2.

Fig 2: Identifying Voltage Between BCM Harness Connector M3 Terminal 37 And Ground

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

1. Turn ignition switch OFF.
2. Disconnect key switch connector.
3. Check key switch. Refer to "KEY SWITCH ".

OK or NG 

OK : GO TO 3.

NG : Replace key switch.

1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M3 terminal 37 and key switch harness connector M23 terminal 1.

   37 - 1 : Continuity should exist. 

3. Check continuity between BCM harness connector M3 terminal 37 and ground.

   37 - Ground : Continuity should not exist. 

OK or NG 

OK : GO TO 4.

NG : Repair harness or connector.

Fig 3: Identifying Continuity Between BCM Harness Connector M3 Terminal 37 And Ground

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

Check voltage between key switch harness connector M23 terminal 2 and ground.

2 - Ground : Battery voltage 

OK or NG 

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

NG : Check harness between key switch and fuse.

Fig 4: Identifying Voltage Between Key Switch Harness Connector M23 Terminal 2 And Ground

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