Key Warning Chime Does Not Operate

1. CHECK FUSE 

   Check if the key switch fuse (No. 25, located in the fuse and fusible link box) is blown. Refer to , "WIRING DIAGRAM - CHIME - "

   Is the fuse blown? 

   YES: Replace the fuse. Be sure to repair the cause of malfunction before installing new fuse.

   NO: GO TO 2.

2. CHECK WARNING CHIME OPERATION 

   With key removed from the ignition and the front door LH open, turn the lighting switch to 1st or 2nd position.

   Does warning chime sound? 

   YES: GO TO 3.

   NO: GO TO , "ALL WARNING CHIMES DO NOT OPERATE " or , "KEY WARNING CHIME AND LIGHT WARNING CHIME DO NOT OPERATE (SEAT BELT WARNING CHIME DOES OPERATE) "

3. CHECK BCM INPUT SIGNAL 

   With CONSULT-II 

   With "DATA MONITOR" of "BUZZER", confirm "KEY ON SW" changes when the key is inserted/removed from the ignition key cylinder.

   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: CONSULT-II Display - Data Monitor

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

   Without CONSULT-II 

   Check voltage between BCM harness connector M18 terminal 37 and ground.

   VOLTAGE TERMINAL SPECIFICATION
   
   

   Terminals			Condition	Voltage (V)
   (+)		(-)
   Connector	Terminal
   M18	37	Ground	Key is inserted	Battery voltage
   			Key is removed	0V

   Fig 2: Checking Voltage Between BCM Harness Connector M18 Terminal 37 And Ground

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

   OK or NG 

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

   NG: GO TO 4.

4. CHECK KEY SWITCH 
   1. Turn ignition switch OFF.
   2. Disconnect key switch connector M27.
   3. Check continuity between key switch terminals 1 and 2.
   CONTINUITY TERMINAL SPECIFICATION
   
   

   Key switch	Terminals		Condition	Continuity
   	1	2	Key is inserted	Yes
   			Key is removed	No

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

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

   OK or NG 

   OK: GO TO 5.

   NG: Replace the key switch.

5. CHECK KEY SWITCH CIRCUIT 
   1. Disconnect BCM connector M18.
   2. Check continuity between BCM harness connector M18 (A) terminal 37 and key switch harness connector M27 (B) terminal 1.
      CONTINUITY TERMINAL SPECIFICATION
      
      

      A		B		Continuity
      Connector	Terminal	Connector	Terminal
      BCM: M18	37	Key switch: M27	1	Yes

   3. Check continuity between BCM harness connector M18 (A) terminal 37 and ground.
      CONTINUITY TERMINAL SPECIFICATION
      
      

      A		Ground	Continuity
      Connector	Terminal
      BCM: M18	37		No

      Fig 4: Checking Continuity Between BCM Harness Connector M18 Terminal 37 And Ground

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

   OK or NG 

   OK: GO TO 6.

   NG: Repair harness or connector.

6. CHECK KEY SWITCH POWER SUPPLY CIRCUIT 

Check voltage between key switch harness connector M27 terminal 2 and ground.

Fig 5: Checking Voltage Between Key Switch Harness Connector M27 Terminal 2 And Ground

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

OK or NG 

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

NG: Check harness for open between fuse and key switch.