Key Warning Chime Does Not Operate

WARNING: This page is about a different car, the 2006 Nissan Quest. 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. 19, located in the fuse block (J/B)] 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.
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) ".

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 Screen 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.

BCM - VOLTAGE TABLE

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

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 OF BCM ".

NG: GO TO 4.

CHECK KEY SWITCH

Disconnect key switch connector.

Check continuity between key switch terminals 1 and 2.

KEY SWITCH - CONTINUITY TABLE

Terminals		Condition	Continuity
1	2	Key is inserted	Yes
1	2	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.

CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector M18.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch harness connector M27 terminal 2.
  Continuity should exist.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
  Continuity should not exist.
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 M27 terminal 1 and ground.

Battery voltage should exist.

Fig 5: Checking Voltage Between Key Switch Harness Connector M27 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

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

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