Key Warning Chime Does Not Operate (Without Intelligent Key)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Infiniti FX45, 2005 Infiniti FX35, 2004 Infiniti FX45, 2004 Infiniti FX35, and 2003 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE
Check if the key switch 15A fuse [No. 22, located in the fuse block (J/B)] is blown. Refer to "WIRING DIAGRAM - CHIME - ".

Is the fuse blown?
1. YES: Replace fuse. Be sure to repair the cause of malfunction before installing new fuse.
2. NO: GO TO 2.
CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of key warning chime (without Intelligent Key) operation.

Does warning chime sound?
1. YES: GO TO 3.
2. NO: Go to "ALL WARNINGS ARE NOT OPERATED " or "KEY WARNING CHIME AND LIGHT WARNING CHIME DOES NOT OPERATE (SEAT BELT WARNING CHIME DOES OPERATE) ".
CHECK BCM INPUT SIGNAL
With CONSULT-II
1. Select "BCM".
2. With "DATA MONITOR" of "BUZZER", confirm "KEY ON SW" when the key is operated.
  1. "KEY ON SW"
  2. When key is inserted to ignition key cylinder: ON
  3. When key is removed from ignition key cylinder: OFF
Fig 1: CONSULT-II Diagnosis Function Display
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Check voltage between BCM harness connector M3 terminal 37 (B/W) and ground.
1. 37 (B/W) - Ground
2. When key is inserted to ignition key cylinder: Approx. 12 V
3. When key is removed from ignition key cylinder: Approx. 0 V
OK or NG
1. OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
2. NG: GO TO 4.
Fig 2: Checking Voltage Between Terminal 37 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK KEY SWITCH
1. Disconnect key switch connector.
2. Check continuity between key switch connector M23 terminals 1 and 2.
  1. 1-2
  2. When key is inserted to ignition key cylinder: Continuity should exist.
  3. When key is removed from ignition key cylinder: Continuity should not exist.
OK or NG
1. OK: GO TO 5.
2. NG: Replace key switch.
Fig 3: Checking Continuity Between Terminals 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M3 terminal 37 (B/W) and key switch harness connector M23 terminal 1 (B/W).
  1. 37 (B/W) - 1 (B/W): Continuity should exist.
3. Check continuity between BCM harness connector M3 terminal 37 (B/W) and ground.
  1. 37 (B/W) - Ground: Continuity should not exist.
OK or NG
1. OK: GO TO 6.
2. NG: Repair harness or connector.
Fig 4: Checking Continuity Between Terminal 37 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch harness connector M23 terminal 2 (L/R) and ground.
1. 2 (L/R) - Ground: Battery voltage
OK or NG
1. OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
2. NG: Check harness between key switch and fuse.
Fig 5: Checking Voltage Between Key Switch Harness Connector M23 Terminal 2 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.