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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1231 (Driver Information System) >> Warning Chime >> Key Warning Chime and Light Warning Chime Do Not Operate (Seat Belt Warning Chime Does Operate)

Key Warning Chime and Light Warning Chime Do Not Operate (Seat Belt Warning Chime Does Operate)

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BCM INPUT SIGNAL 

    With CONSULT-II 

    1. Select "BCM" on CONSULT-II.
    2. With "DATA MONITOR" of "BUZZER", confirm "DOOR SW-DR" changes with the status of front door LH.
      • When front door LH is opened: DOOR SW-DR ON 
      • When front door LH is closed: DOOR SW-DR OFF 
      Fig 1: CONSULT-II BASIC OPERATION PROCEDURE - DOOR SW-DR OFF
      G02385855Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    Check voltage between BCM harness connector M19 terminal 47 (SB) and ground.

    • When front door LH is opened: Approx. 0V 
    • When front door LH is closed: Approx. 5V 

    OK or NG

    Fig 2: Checking Voltage Between BCM Harness Connector M19 Terminal 47 (SB) And Ground
    G02385856Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK FRONT DOOR SWITCH LH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector M19 and front door switch LH connector B8.
    3. Check continuity between BCM harness connector M19 terminal 47 (SB) and front door switch LH harness connector B8 terminal 2 (SB).
      • Continuity should exist. 
    4. Check continuity between BCM harness connector M19 terminal 47 (SB) and ground.
      • Continuity should not exist. 

    OK or NG

    • OK: GO TO 3.
    • NG: Repair harness or connector.
    Fig 3: Checking Continuity Between BCM Harness Connector M19 Terminal 47 And Front Door Switch LH Harness Connector B8 Terminal 2
    G02385857Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK FRONT DOOR SWITCH LH 

    Check continuity between front door switch LH terminal 2 and exposed metal of switch while pressing and releasing switch.

    • When front door switch LH is released: Continuity should exist. 
    • When front door switch LH is pressed: Continuity should not exist. 

    OK or NG

    Fig 4: Checking Continuity Between Front Door Switch LH Terminal 2 And Exposed Metal Of Switch
    G02385858Courtesy of NISSAN MOTOR CO., U.S.A.