warning light INFINITI QX56 2008 Factory Workshop Manual

SRC-92
< SYMPTOM DIAGNOSIS >
PASSENGER SEAT BELT WARNING SYSTEM
PASSENGER SEAT BELT WARNING SYSTEM
Seat Belt Warning System Does Not FunctionINFOID:0000000001735365
1.SEAT BELT WARNING LIGHT
Turn ignition switch ON.
Does the seat belt warning lamp come ON?
YES >> GO TO 2
NO >> • Check 10A fuse [No. 14, located in the fuse block (J/B)]. • Check seat belt buckle switch LH.
• Check harness between combination meter and seat belt buckle switch LH.
• Check combination meter. Refer to MWI-25, "
CONSULT-III Function (METER/M&A)".
2.SEAT BELT BUCKLE LH
Fasten the seat belt buckle LH.
Does the seat belt warning lamp go OFF?
YES >> GO TO 3
NO >> • Check seat belt buckle switch LH. • Check harness between combination meter and seat belt buckle switch LH.
3.OCCUPANT CLASSIFICATION SYSTEM
Have a helper sit in the passenger seat.
Does the seat belt warning lamp go ON?
YES >> GO TO 4
NO >> • Check occupant classification system. Refer to SRC-10, "
Occupant Classification System
(OCS)".
• Check harness between occupant classification control unit and air bag diagnosis sensor unit.
4.SEAT BELT BUCKLE RH
Fasten the seat belt buckle RH.
Does the seat belt warning lamp go OFF?
YES >> System OK.
NO >> • Check seat belt buckle switch RH. • Check harness between seat belt buckle switch RH and air bag diagnosis sensor unit.
• Replace air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
Revision: March 2010 2008 QX56

WCS
WCS-1
DRIVER INFORMATION & MULTIMEDIA
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SECTION WCS
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CONTENTS
WARNING CHIME SYSTEM
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ........................................................... ......3
FUNCTION DIAGNOSIS ...............................4
WARNING CHIME SYSTEM .......................... .....4
WARNING CHIME SYSTEM .......................................4
WARNING CHIME SYSTEM : System Diagram . ......4
WARNING CHIME SYSTEM : System Description
......
4
WARNING CHIME SYSTEM : Component Parts
Location ............................................................... ......
5
WARNING CHIME SYSTEM : Component De-
scription .....................................................................
5
LIGHT REMINDER WARNING CHIME ................. ......6
LIGHT REMINDER WARNING CHIME : System
Diagram .....................................................................
6
LIGHT REMINDER WARNING CHIME : System
Description ................................................................
6
LIGHT REMINDER WARNING CHIME : Compo-
nent Parts Location ...................................................
7
LIGHT REMINDER WARNING CHIME : Compo-
nent Description ........................................................
7
SEAT BELT WARNING CHIME ............................ ......7
SEAT BELT WARNING CHIME : System Diagram
......
8
SEAT BELT WARNING CHIME : System Descrip-
tion ...................................................................... ......
8
SEAT BELT WARNING CHIME : Component
Parts Location ...........................................................
9
SEAT BELT WARNING CHIME : Component De-
scription .....................................................................
9
KEY WARNING CHIME ......................................... ....10
KEY WARNING CHIME : System Diagram ............10
KEY WARNING CHIME : System Description ........10
KEY WARNING CHIME : Component Parts Loca-
tion ....................................................................... ....
11
KEY WARNING CHIME : Component Description ....11
DIAGNOSIS SYSTEM (METER) .......................12
Diagnosis Description ..............................................12
CONSULT-III Function (METER/M&A) ....................13
DIAGNOSIS SYSTEM (BCM) ...........................16
BUZZER ................................................................. ....16
BUZZER : CONSULT-III Function (BCM - BUZZ-
ER) ..........................................................................
16
COMPONENT DIAGNOSIS .........................17
POWER SUPPLY AND GROUND CIRCUIT ....17
COMBINATION METER ........................................ ....17
COMBINATION METER : Diagnosis Procedure .....17
BCM (BODY CONTROL MODULE) ...................... ....18
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ............................................................ ....
18
METER BUZZER CIRCUIT ...............................19
Description ...............................................................19
Component Function Check ....................................19
Diagnosis Procedure ..............................................19
SEAT BELT BUCKLE SWITCH SIGNAL CIR-
CUIT ..................................................................
20
Description ...............................................................20
Component Function Check ..................................20
Diagnosis Procedure ..............................................20
Component Inspection .............................................21
KEY SWITCH SIGNAL CIRCUIT ......................22
Description ...............................................................22
Component Function Check ..................................22
Diagnosis Procedure ..............................................22
Component Inspection .............................................23
Revision: March 2010 2008 QX56

WCS-2
WARNING CHIME SYSTEM .............................24
Wiring Diagram .................................................... ...24
ECU DIAGNOSIS ..................................... ...29
COMBINATION METER ................................. ...29
Reference Value .................................................. ...29
Wiring Diagram .......................................................31
Fail Safe .................................................................48
DTC Index ..............................................................49
BCM (BODY CONTROL MODULE) ..................51
Reference Value .................................................. ...51
Terminal Layout ......................................................53
Physical Values ......................................................53
Wiring Diagram .......................................................59
Fail Safe .................................................................62
DTC Inspection Priority Chart ..............................63
DTC Index ........................................................... ...63
SYMPTOM DIAGNOSIS .............................65
THE LIGHT REMINDER WARNING DOES
NOT SOUND ................................................... ...
65
Description ........................................................... ...65
Diagnosis Procedure ...............................................65
THE SEAT BELT WARNING CONTINUES
SOUNDING, OR DOES NOT SOUND ...............
66
Description ........................................................... ...66
Diagnosis Procedure ...............................................66
THE KEY WARNING DOES NOT SOUND .......67
Description ........................................................... ...67
Diagnosis Procedure ...............................................67
PRECAUTION ............................................68
PRECAUTIONS .............................................. ...68
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
68
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
68
Revision: March 2010 2008 QX56

WCS-4
< FUNCTION DIAGNOSIS >
WARNING CHIME SYSTEM
FUNCTION DIAGNOSIS
WARNING CHIME SYSTEM
WARNING CHIME SYSTEM
WARNING CHIME SYSTEM : System DiagramINFOID:0000000001697653
WARNING CHIME SYSTEM : System DescriptionINFOID:0000000001697654
COMBINATION METER
• The buzzer for warning chime system is installed in the combination meter.
• The buzzer sounds when the combination meter receives a buzzer output signal from each unit.
BCM
BCM receives signals from various units and transmits a buzzer output signal to the combination meter with
CAN communication line if it judges that the warning buzzer should be activated.
BCM warning function list
AWNIA0210GB
Warning functions Signal name
Light reminder warning chime • Lighting switch position signal
• Door switch signal
Seat belt warning chime Seat belt buckle switch signal
Key warning chime • Key switch signal
• Door switch signal
Revision: March 2010
2008 QX56

WCS
WARNING CHIME SYSTEMWCS-5
< FUNCTION DIAGNOSIS >
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WARNING CHIME SYSTEM : Component Parts LocationINFOID:0000000001697655
WARNING CHIME SYSTEM : Component DescriptionINFOID:0000000001697656
AWNIA0211ZZ
1. Combination meter M23, M24 2. Combination switch (lighting switch)
M283. BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
4. Front door switch LH B8 5. Key switch and ignition knob switch
M12 6. Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74
Unit Description
Combination meter • Receives the seat belt buckle switch signal from the seat belt buckle pre-tensioner assembly
LH (seat belt buckle switch) and transmits it to BCM with CAN communication line.
• Receives a buzzer output signal from BCM with CAN communication line.
BCM Transmits signals provided by various units to the combination meter with CAN communication
line.
Key switch and ignition knob
switch Transmits key switch signal to BCM.
Revision: March 2010
2008 QX56

WCS-6
< FUNCTION DIAGNOSIS >
WARNING CHIME SYSTEM
LIGHT REMINDER WARNING CHIME
LIGHT REMINDER WARNING CHIME : System DiagramINFOID:0000000001697657
LIGHT REMINDER WARNING CHIME : System DescriptionINFOID:0000000001697658
DESCRIPTION
With ignition switch in OFF or ACC position, driver door open, and lighting switch in 1ST or 2ND position, the
light warning chime will sound.
• BCM detects ignition switch in OFF or ACC position, front door switch LH ON, and lighting switch in 1ST or2ND position. And then transmits buzzer output signal (light reminder warning chime) to combination meter
with CAN communication line.
• When combination meter receives buzzer output signal ( light reminder warning chime), it sounds the buzzer.
WARNING OPERATION CONDITIONS
If all of the following conditions are fulfilled• Lighting switch is at 1st or 2nd position
• Ignition switch is at OFF or ACC
• Front door switch LH is ON
WARNING CANCEL CONDITIONS
Warning is canceled if any of the following conditions is fulfilled.
• Lighting switch OFF
• Ignition switch ON
• Front door switch LH is OFF
Seat belt buckle pre-tensioner as-
sembly LH (seat belt buckle
switch)Transmits a seat belt buckle switch signal to the combination meter.
Combination switch
(Lighting switch) Transmits the lighting switch position signal to BCM.
Front door switch LH Transmits the door switch signal to BCM.
Unit
Description
WKIA5465E
Revision: March 2010 2008 QX56

WCS
WARNING CHIME SYSTEMWCS-7
< FUNCTION DIAGNOSIS >
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LIGHT REMINDER WARNING CHIM E : Component Parts LocationINFOID:0000000004872526
LIGHT REMINDER WARNING CHIME : Component DescriptionINFOID:0000000001697660
SEAT BELT WARNING CHIME
AWNIA0211ZZ
1. Combination meter M23, M24 2. Combination switch (lighting switch)
M283. BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
4. Front door switch LH B8 5. Key switch and ignition knob switch
M12 6. Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74
Unit Description
Combination meter Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.
BCM Judges the light warning conditions from the signals provided by various switches and transmits a
buzzer output signal to the combination meter via CAN communication line if necessary.
Combination switch
(Lighting switch) Transmits the lighting switch position signal to BCM.
Front door switch LH Transmits the door switch signal to BCM.
Revision: March 2010 2008 QX56

WCS
WARNING CHIME SYSTEMWCS-9
< FUNCTION DIAGNOSIS >
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SEAT BELT WARNING CHIME : Component Parts LocationINFOID:0000000004872527
SEAT BELT WARNING CHIME : Component DescriptionINFOID:0000000001697664
AWNIA0211ZZ
1. Combination meter M23, M24 2. Combination switch (lighting switch)
M283. BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
4. Front door switch LH B8 5. Key switch and ignition knob switch
M12 6. Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74
Unit Description
Combination meter • Receives the seat belt buckle switch signal from the seat belt buckle switch and transmits it to
BCM via CAN communication line.
• Receives a buzzer output signal from BCM via CAN communication line and sounds the buzzer.
BCM Judges the seat belt warning condition from the seat belt buckle switch signal received from the
combination meter and transmits a buzzer output signal to the combination meter via CAN commu-
nication line if necessary.
Seat belt buckle pre-tensioner
assembly LH (seat belt buckle
switch) Transmits seat belt buckle switch signal to combination meter.
Revision: March 2010
2008 QX56

WCS
WARNING CHIME SYSTEMWCS-11
< FUNCTION DIAGNOSIS >
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KEY WARNING CHIME : Co mponent Parts LocationINFOID:0000000004872564
KEY WARNING CHIME : Component DescriptionINFOID:0000000001697668
AWNIA0211ZZ
1. Combination meter M23, M24 2. Combination switch (lighting switch)
M283. BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
4. Front door switch LH B8 5. Key switch and ignition knob switch
M12 6. Seat belt buckle pre-tensioner assem-
bly LH (seat belt buckle switch) B74
Unit Description
Combination meter Receives key warning signal from BCM via CAN communication line and sounds the buzzer.
BCM Judges the key warning condition using the door switch signal received from the front door switch
LH, and the key switch signal received from the key switch and ignition knob switch. It then transmits
a buzzer output signal to the combination meter via CAN communication line if necessary.
Front door switch LH Transmits door switch signal to BCM.
Key switch and ignition knob
switch Transmits key switch signal to BCM.
Revision: March 2010
2008 QX56

WCS
DIAGNOSIS SYSTEM (METER)WCS-15
< FUNCTION DIAGNOSIS >
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NOTE:
Some items are not available due to vehicle specification.
*: The monitor will indicate “OFF” even though the brake warnin g lamp is on if either of the following conditions exist.
• The parking brake is engaged
• The brake fluid level is low CRUISE W/L [ON/OFF]
X Indicates [ON/OFF] condition of CRUISE warning lamp.
4WD LOCK SW [ON/OFF] X Indicates [ON/OFF] condition of 4WD lock switch.
4WD LOCK IND [ON/OFF] X Indicates [ON/OFF] condition of 4WD lock indicator.
SEAT BELT W/L [ON/OFF] X Indicates [ON/OFF] condition of seat belt warning lamp.
FR FOG IND [ON/OFF] X This item is not used for this model. “OFF” is always displayed.
RR FOG IND [ON/OFF] X This item is not used for this model. “OFF” is always displayed.
LIGHT IND [ON/OFF] X Indicates [ON/OFF] condition of light indicator.
PNP P SW [ON/OFF] XX Indicates [ON/OFF] co ndition of transmission range P switch.
PNP N SW [ON/OFF] XX Indicates [ON/OFF] condition of transmission range N switch.
4WD W/L [ON/OFF] X Indicates [ON/OFF] condition of 4WD warning lamp.
Display item [Unit]
MAIN
SIGNALS SELECTION
FROM MENU Description
Revision: March 2010
2008 QX56