Key Switch Signal Inspection (Without Intelligent Key)

With CONSULT-ll 

1. Select "BCM".
2. With "DATA MONITOR" of "BUZZER", confirm "KEY ON SW" when the key switch 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: CONSULT-II Display - DATA MONITOR

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

Without CONSULT-ll 

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

37 (B/P) - Ground 

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

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

Fig 2: Identifying Voltage Between BCM Harness Connector M1 Terminal 37 (B/P) And Ground

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

OK or NG 

OK: INSPECTION END

NG: GO TO 2.

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 M1 terminal 37 (B/P) and key switch harness connector M307 terminal 1 (B/P).

   37 (B/P) - 1 (B/P): Continuity should exist  .

3. Check continuity between BCM harness connector M1 terminal 37 (B/P) and ground.

   37 (B/P) - Ground: Continuity should not exist  .

   Fig 3: Identifying Continuity Between BCM Harness Connector M1 Terminal 37 (B/P) And Ground

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

OK or NG 

OK: GO TO 4.

NG: Repair harness or connector.

Check voltage between key switch harness connector M307 terminal 2 (L/W) and ground.

2 (L/W) - 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 M307 Terminal 2 (L/W) And Ground

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