Key Warning Chime Does Not Operate

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE
Check if the key switch 10A fuse [No. 21, located in the fuse block (J/B)] is blown. Refer to "WIRING DIAGRAM - CHIME- ".

Is the fuse blown?
- YES : Replace fuse. Be sure to repair the cause of malfunction before installing new fuse.
- NO : GO TO 2.
CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of key warning chime operation.

Does warning chime sound?
- YES : GO TO 3.
- 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.
  - "KEY ON SW"
  - When key is inserted to ignition key cylinder : ON
  - When key is removed from ignition key cylinder : OFF
  Fig 1: Scan Tool Display "Data Monitor"
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II

Check voltage between BCM harness connector M90 terminal 37 (B/R) and ground.
- 37 (B/R) - 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: BCM Harness Connector M90 Terminal 37 (B/R) & Ground Voltage Test
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
- NG : GO TO 4.
CHECK KEY SWITCH (INSERT)
1. Disconnect key switch connector.
2. Check continuity between key switch connector M25 terminals 1 and 2.
  - 1 - 2
  - When key is inserted to ignition key cylinder : Continuity should exist.
  - When key is removed from ignition key cylinder : Continuity should not exist.
  Fig 3: Key Switch Connector M25 Terminals 1 & 2 Continuity Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 5.
- NG : Replace key cylinder assembly (key switch).
CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M90 terminal 37 (B/R) and key switch harness connector M25 terminal 1 (B/R).
  - 37 (B/R) - 1 (B/R) : Continuity should exist.
3. Check continuity between BCM harness connector M90 terminal 37 (B/R) and ground.
  - 37 (B/R) - Ground : Continuity should not exist.
  Fig 4: BCM Harness Connector M90 Terminal 37 (B/R) & Key Switch Harness Connector M25 Terminal 1 (B/R) Continuity Test
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 6.
- NG : Repair harness or connector.
CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch harness connector M25 terminal 2 (PU) and ground.
- 2 (PU) - 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 5: Key Switch Harness Connector M25 Terminal 2 (PU) & Ground Voltage Test
Courtesy of NISSAN MOTOR CO., U.S.A.