light INFINITI QX56 2011 Factory Service Manual

WCS-10
< SYSTEM DESCRIPTION >
SYSTEM
FRONT FOG LIGHT REMINDER WARNING CHIME : System Diagram
INFOID:0000000006222545
FRONT FOG LIGHT REMINDER WARNING CHIME : System DescriptionINFOID:0000000006222546
WARNING CHIME OPERATION CONDITIONS
Warning chime sounds during 2 seconds when the ignition sw itch is in LOCK, OFF or ACC position, if all of
below operation conditions is met.
SIGNAL PATH
1. BCM requires warning chime output to combination meter when it judges front fog light reminder warning
chime is necessary from signals below.
2. Combination meter sounds integrated buzzer, following the warning chime output requirement (below sig- nal) from BCM.
TIMING CHART
SEAT BELT WARNING CHIME
JSNIA3117GB
Operation conditions
Ignition switch ON position
Combination switch (Lighting
switch) AUTO position and front fog lamp switch ON
position
Signal name Signal path
Ignition switch signal —
Combination switch signal Combination switch (Lighting switch) BCM
Signal name Signal path
Buzzer output signal BCM Combination meter
JSNIA3110GB
Revision: 2010 May2011 QX56

WCS-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (COMBINATION METER)
DIAGNOSIS SYSTEM (COMBINATION METER)
CONSULT-III FunctionINFOID:0000000006222742
CONSULT-III APPLICATION ITEMS
CONSULT-III can perform the following diagnosis modes via CAN communication and the combination meter.
SELF DIAG RESULT
Refer to MWI-43, "DTC Index".
DATA MONITOR
Display Item List
X: Applicable
System Diagnosis mode Description
METER/M&A Self Diagnostic Result The combination meter checks the conditions and displays memorized errors.
Data Monitor Displays the combination meter input/output data in real time.
Special function Lighting history of the warning lamp and indicator lamp can be checked.
Display item [Unit]
MAIN
SIGNALS Description
SPEED METER
[km/h] XValue of vehicle speed
signal received from ABS actuator and el ectric unit (control
unit) via CAN communication.
NOTE:
655.35 is displayed when the malfunction signal is received.
SPEED OUTPUT
[km/h] XVehicle speed signal value transmitted to other units via CAN communication.
NOTE:
655.35 is displayed when the malfunction signal is received.
ODO OUTPUT
[km/h or mph] Odometer signal value transmitted to other units via CAN communication.
TACHO METER
[rpm] XValue of the engine speed signal received from ECM via CAN communication.
NOTE:
8191.875 is displayed when the malfunction signal is received.
FUEL METER
[L] X Fuel level indicated on combination meter.
W TEMP METER
[ ° C] XValue of engine coolant temperature signal is received from ECM via CAN com-
munication.
NOTE:
215 is displayed when the malfunction signal is input.
ABS W/L
[On/Off] Status of ABS warning lamp
detected from ABS warning lamp signal is received
from ABS actuator and electric unit (control unit) via CAN communication.
VDC/TCS IND
[On/Off] Status of VDC OFF indicator lamp detected from VDC OFF indicator lamp signal
is received from ABS actuator and electric
unit (control unit) via CAN communica-
tion.
SLIP IND
[On/Off] Status of VDC warning lamp detected from VDC warning lamp signal received
from ABS actuator and electric unit (control unit) via CAN communication.
BRAKE W/L
[On/Off] Status of brake warning lamp detected from brake warning lamp signal is received
from ABS actuator and electric unit (control unit) via CAN communication.
NOTE:
Displays “Off” if the brake warning lamp is illuminated when the valve check starts,
the parking brake switch is turned ON or the brake fluid level switch is turned ON.
DOOR W/L
[On/Off] Status of door open warning detected from door switch signal received from BCM
via CAN communication.
HI-BEAM IND
[On/Off] Status of high beam indicator lamp detected from high beam request signal is re-
ceived from BCM via CAN communication.
TURN IND
[On/Off] Status of turn indicator lamp detected from turn indicator signal is received from
BCM via CAN communication.
Revision: 2010 May2011 QX56

WCS
DIAGNOSIS SYSTEM (COMBINATION METER)
WCS-15
< SYSTEM DESCRIPTION >
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FR FOG IND
[Off] This item is displayed, but cannot be monitored.
RR FOG IND
[Off] This item is displayed, but cannot be monitored.
LIGHT IND
[On/Off] Status of light indicator lamp detected from position light request signal is received
from BCM via CAN communication.
OIL W/L
[On/Off] Status of oil pressure warning lamp detected from oil pressure switch signal is re-
ceived from BCM via CAN communication.
MIL
[On/Off] Status of malfunction indicator lamp detected from malfunctioning indicator lamp
signal is received from ECM via CAN communication.
GLOW IND
[Off] This item is displayed, but cannot be monitored.
CRUISE IND
[On/Off]  Status of CRUISE indicator detected from ASCD status signal is received from
ECM via CAN communicat ion. (ASCD models)
 Status of CRUISE indicator de tected from meter display signal is received from
ADAS control unit via CAN communication. (ICC models)
SET IND
[On/Off] Status of SET indicator detected from meter display signal is received from ADAS
control unit via CAN communication.
CRUISE W/L
[On/Off] Status of CRUISE warning lamp
judged from ICC warning lamp signal received
from ADAS control unit with CAN communication line.
BA W/L
[On/Off] Status of IBA OFF indicator lamp judged from IBA OFF indicator lamp signal re-
ceived from ADAS control unit with CAN communication line.
ATC/T-AMT W/L
[On/Off] Status of A/T CHECK warning lamp judged
from A/T CHECK indicator lamp signal
received from TCM with CAN communication line.
ATF TEMP W/L
[Off] This item is displayed, but cannot be monitored.
4WD W/L
[On/Off] Status of 4WD warning lamp judged from 4WD warning lamp signal received from
4WD control unit with
CAN communication line.
FUEL W/L
[On/Off] Low-fuel warning lamp status detected by the identified fuel level.
WASHER W/L
[On/Off] Status of low washer fluid warning judged from washer level switch input to com-
bination meter.
AIR PRES W/L
[On/Off] Status of low tire pressure warning lamp judged from low tire pressure warning
lamp signal received from BCM with CAN communication line.
KEY G/Y W/L
[On/Off] Status of KEY warning lamp
(Green/Yellow) detected from KEY warning lamp sig-
nal is received from BCM via CAN communication.
KEY KNOB W/L
[Off] This item is displayed, but cannot be monitored.
AFS OFF IND
[On/Off] Status of AFS OFF indicator lamp judged from AFS OFF indicator lamp signal re-
ceived from AFS control unit with CAN communication line.
DDS
* W/L
[Off] This item is displayed, but cannot be monitored.
LANE W/L
[On/Off] Status of lane departure warning lamp judged from lane departure warning lamp
signal received from ADAS control unit with CAN communication line.
LDP IND
[On/Off] Status of LDP ON indicator lamp judged from LDP ON indicator lamp signal re-
ceived from ADAS control unit with CAN communication line.
AT P W / L
[On/Off] Status of ATP warning lamp judged from ATP warning lamp signal received from
4WD control unit with
CAN communication line.
DCA IND
[Off] This item is displayed, but cannot be monitored.
CHECK SUS IND
[On/Off] Status of CK SUSP indicator lamp judged from CK SUSP indicator lamp signal re-
ceived from E-SUS control unit with CAN communication line.
Display item [Unit]
MAIN
SIGNALS Description
Revision: 2010 May2011 QX56

WCS
DIAGNOSIS SYSTEM (COMBINATION METER)
WCS-17
< SYSTEM DESCRIPTION >
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*: DDS (hill descent control) NOTE:
Some items are not available according to vehicle specification.
SPECIAL FUNCTION
Special menu
W/L ON HISTORY
 Stores histories when warning/indicator lamp is turned on.
 “W/L ON HISTORY” indicates the “TIME” when the warning/ indicator lamp is turned on.
 The “TIME” above is:
- 0: The condition that the warning/indicator lamp has been turned on 1 or more times after starting the engine and waiting for 30 seconds.
- 1 - 39: The number of times the engine was restarted after the 0 condition.
- NO W/L ON HISTORY: Stores NO (0) turning on history of warning/indicator lamp.
NOTE:
 W/L ON HISTORY is not stored for approximately 30 seconds after the engine starts.
 Brake warning lamp does not store any history when the parking brake is applied or the brake fluid level gets
low.
Display Item
FUEL LOW SIG
[On/Off] Status of fuel level low warning signal to output to AV control unit via CAN com-
munication.
TOW MODE IND
[On/Off] Status of TOW mode indicator lamp judged from TOW mode indicator lamp signal
received from TCM with CAN communication line.
BUZZER
[On/Off] XBuzzer status (in the combination meter) is detected from the buzzer output signal
received from each unit via CAN communication and the warning output condition
of the combination meter.
Display item [Unit]
MAIN
SIGNALS Description
Display item Description
W/L ON HISTORY Lighting history of warning lamp and indicator lamp can be checked.
Display item Description
ABS W/L Lighting history of ABS warning lamp.
VDC/TCS IND Lighting history of VDC OFF indicator lamp.
SLIP IND Lighting history of VDC warning lamp.
BRAKE W/L Lighting history of brake warning lamp.
DOOR W/L Lighting history of door open warning.
TRUNK/GLAS-H This item is displayed, but cannot be monitored.
OIL W/L Lighting history of oil pressure warning lamp.
C-ENG W/L Lighting history of malfunction indicator lamp.
C-ENG2 W/L This item is displayed, but cannot be monitored.
CRUISE IND Lighting history of CRUISE indicator lamp.
SET IND Lighting history of SET indicator lamp.
CRUISE W/L Lighting histor y of CRUISE warning lamp.
BA W/L Lighting history of IBA OFF indicator lamp.
O/D OFF IND This item is displayed, but cannot be monitored.
ATC/T-AMT W/L Lighting history of A/T CHECK warning lamp.
ATF TEMP W/L This item is displayed, but cannot be monitored.
CVT IND This item is displayed, but cannot be monitored.
SPORT IND This item is displayed, but cannot be monitored.
Revision: 2010 May2011 QX56

WCS-18
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (COMBINATION METER)
4WD W/L Lighting history of 4WD warning lamp.
FUEL W/L Lighting history of low fuel level warning.
WASHER W/L Lighting history of low washer fluid warning.
AIR PRES W/L Lighting history of low tire pressure warning lamp.
KEY G/Y W/L Lighting history of KEY warning lamp.
KEY R W/L This item is displayed, but cannot be monitored.
KEY KNOB W/L This item is displa yed, but cannot be monitored.
EPS W/L This item is displayed, but cannot be monitored.
e-4WD This item is displayed, but cannot be monitored.
AFS OFF IND This item is displayed, but cannot be monitored.
4WAS/RAS W/L This item is displayed, but cannot be monitored.
HDC W/L This item is displayed, but cannot be monitored.
SYS FAIL W/L This item is displa yed, but cannot be monitored.
SFT POSI W/L This item is displayed, but cannot be monitored.
HV BAT W/L This item is displayed, but cannot be monitored.
HEV BRAKE W/L This item is displayed, but cannot be monitored.
SFT OPER W/L This item is displayed, but cannot be monitored.
LANE W/L Lighting history of lane departure warning lamp.
CHAGE W/L This item is displayed, but cannot be monitored.
OIL LEV LOW This item is displayed, but cannot be monitored.
DPF W/L This item is displayed, but cannot be monitored.
TRAILER IND This item is displayed, but cannot be monitored.
RUN FLAT W/L This item is displa yed, but cannot be monitored.
E-SUS W/L This item is displayed, but cannot be monitored.
LAUNCH CNT W/L This item is displayed, but cannot be monitored.
BRAKE PAD W/L This item is displa yed, but cannot be monitored.
Display item Description
Revision: 2010 May2011 QX56

WCS
DIAGNOSIS SYSTEM (BCM)WCS-21
< SYSTEM DESCRIPTION >
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ACTIVE TEST
Display item [Unit] Description
PUSH SW
[On/Off] Status of push-button ignition switch judged by BCM.
UNLK SEN-DR
[On/Off] Status of unlock sensor judged by BCM.
VEH SPEED 1
[km/h] Value of vehicle speed signal received from combination meter with CAN communication line.
TAIL LAMP SW
[On/Off] Status of lighting switch judged by BCM using the combination switch readout function.
FR FOG SW
[On/Off] Status of front fog lamp switch judged by BCM using the combination switch readout function.
DOOR SW-DR
[On/Off] Status of driver side door switch judged by BCM.
CDL LOCK SW
[On/Off] Status of door lock unlock switch judged by BCM.
Display item
[Unit] Description
SEAT BELT WARN TEST The seat belt warning chime operation can be checked by operating the relevant function (On/Off).
LIGHT WARN ALM The light warning chime operation can be checked by operating the relevant function (On/Off).
Revision: 2010 May2011 QX56

WCS
COMBINATION METERWCS-23
< ECU DIAGNOSIS INFORMATION >
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LIGHT IND Ignition switch
ONTail lamp indicator lamp ON On
Tail lamp indicator lamp OFF Off
OIL W/L Ignition switch
ONOil pressure warning lamp ON On
Oil pressure warning lamp OFF Off
MIL Ignition switch
ONMalfunction indicator lamp ON On
Malfunction indicator lamp OFF Off
GLOW IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
CRUISE IND Ignition switch
ONCRUISE indicator ON On
CRUISE indicator OFF Off
SET IND Ignition switch
ONSET indicator ON On
SET indicator OFF Off
CRUISE W/L Ignition switch
ONCRUISE warning lamp ON On
CRUISE warning lamp OFF Off
BA W/L Ignition switch
ONIBA OFF indicator lamp ON On
IBA OFF indicator lamp OFF Off
AT C / T - A M T W / L Ignition switch
ONA/T check warning lamp ON On
A/T check warning lamp OFF Off
ATF TEMP W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
4WD W/L Ignition switch
ON4WD warning lamp ON On
4WD warning lamp OFF Off
FUEL W/L Ignition switch
ONDuring low fuel warning indication On
Other than the above Off
WASHER W/L Ignition switch
ONDuring low washer fluid warning indication On
Other than the above Off
AIR PRES W/L Ignition switch
ONLow tire pressure
warning lamp ON On
Low tire pressure warning lamp OFF Off
KEY G/Y W/L Ignition switch
ONKEY warning lamp (G
reen/Yellow) ON On
KEY warning lamp (G reen/Yellow) OFF Off
KEY KNOB W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
AFS OFF IND Ignition switch
ONAFS OFF indicator lamp ON On
AFS OFF indicator lamp OFF Off
DDS W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
LANE W/L Ignition switch
ONLane departure warning lamp ON On
Lane departure warning lamp OFF Off
LDP IND Ignition switch
ONLDP ON indicator lamp ON On
LDP ON indicator lamp OFF Off
AT P W / L Ignition switch
ONATP warning lamp ON On
AT P w a r n i n g l a m p O F F O f f
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

WCS-40
< DTC/CIRCUIT DIAGNOSIS >
METER BUZZER CIRCUIT
METER BUZZER CIRCUIT
Component Function CheckINFOID:0000000006222528
1.CHECK OPERATION OF METER BUZZER
1. Select “BUZZER” of “BCM” on CONSULT-III.
2. Perform “LIGHT WARN ALM” of “Active Test”.
Does meter buzzer beep?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK COMBINATION METER INPUT SIGNAL
Select the “Data Monitor” for the “METER/M&A” and check the “BUZZER” monitor value.
Is the inspection result normal?
YES >> Replace combination meter.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
Diagnosis ProcedureINFOID:0000000006222529
1.CHECK POWER SUPPLY OF COMBINATION METER
Check power supply of combination meter. Refer to MWI-64, "
COMBINATION METER : Diagnosis Proce-
dure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair power supply circuit of combination meter.
BUZZER
Under the condition of buzzer input : On
Except above : Off
Revision: 2010 May2011 QX56

WCS-44
< SYMPTOM DIAGNOSIS >
THE LIGHT REMINDER WARNING DOES NOT SOUND
SYMPTOM DIAGNOSIS
THE LIGHT REMINDER WARNING DOES NOT SOUND
DescriptionINFOID:0000000006222532
Light reminder warning chime does not sound even though headlamp is illuminated.
Diagnosis ProcedureINFOID:0000000006222533
1.CHECK COMBINATION SWITCH (LIGHTING SWITCH) OPERATION
Check that the headlamps operate normally by operat ing the combination switch (lighting switch).
Do they operate normally?
YES >> GO TO 2.
NO >> Refer to EXL-113, "
Symptom Table".
2.CHECK DRIVER SIDE DOOR SWITCH SIGNAL CIRCUIT
Perform the check for the driver side door switch signal circuit. Refer to DLK-117, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK DRIVER SIDE DOOR SWITCH
Perform a unit check for the driver side door switch. Refer to DLK-119, "
Component Inspection".
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Replace driver side door switch. Refer to DLK-254, "
Removal and Installation".
Revision: 2010 May2011 QX56

WW-2
FRONT WIPER MOTOR GROUND CIRCUIT ...39
Diagnosis Procedure ..............................................39
LIGHT & RAIN SENSOR ...................................40
Component Function Check ................................ ...40
Diagnosis Procedure ..............................................40
WASHER SWITCH ............................................42
Component Inspection ......................................... ...42
REAR WIPER MOTOR CIRCUIT ......................43
Component Function Check ................................ ...43
Diagnosis Procedure ..............................................43
REAR WIPER AUTO STOP SIGNAL CIRCUIT
...
45
Component Function Check ................................ ...45
Diagnosis Procedure ..............................................45
HEADLAMP WASHER RELAY .........................46
Component Inspection ......................................... ...46
HEADLAMP WASHER CIRCUIT ......................47
Component Function Check ................................ ...47
Diagnosis Procedure ..............................................47
SYMPTOM DIAGNOSIS .............................49
WIPER AND WASHER SYSTEM SYMPTOMS
...
49
Symptom Table ................................................... ...49
NORMAL OPERATING CONDITION ................52
Description ........................................................... ...52
FRONT WIPER DOES NOT OPERATE ............53
Description ........................................................... ...53
Diagnosis Procedure ..............................................53
REMOVAL AND INSTALLATION ...............55
HEADLAMP WASHER NOZZLE AND TUBE ...55
Exploded View ..................................................... ...55
Hydraulic Layout .....................................................55
Removal and Installation ........................................56
Inspection ...............................................................56
WASHER TANK ............................................. ...58
Exploded View ..................................................... ...58
Removal and Installation ........................................58
WASHER PUMP ................................................60
Exploded View ..................................................... ...60
Removal and Installation .........................................60
HEADLAMP WASHER PUMP ..........................61
Exploded View ..................................................... ...61
Removal and Installation .........................................61
WASHER LEVEL SWITCH ...............................62
Removal and Installation ...................................... ...62
FRONT WASHER NOZZLE AND TUBE ...........63
Exploded View ..................................................... ...63
Hydraulic Layout .....................................................63
Removal and Installation .........................................64
Inspection and Adjustment ......................................64
FRONT WIPER ARM .........................................66
Exploded View ..................................................... ...66
Removal and Installation .........................................66
Adjustment ..............................................................66
FRONT WIPER BLADE .....................................68
Exploded View ..................................................... ...68
Removal and Installation .........................................68
Replacement ...........................................................68
FRONT WIPER DRIVE ASSEMBLY .................70
Exploded View ..................................................... ...70
Removal and Installation .........................................70
Disassembly and Assembly ....................................71
LIGHT & RAIN SENSOR ...................................72
Exploded View ..................................................... ...72
Removal and Installation .........................................72
WIPER AND WASHER SWITCH ......................73
Exploded View ..................................................... ...73
REAR WIPER ARM ...........................................74
Exploded View ..................................................... ...74
Removal and Installation .........................................74
Adjustment ..............................................................74
REAR WIPER MOTOR ......................................76
Exploded View ..................................................... ...76
Removal and Installation .........................................76
REAR WASHER NOZZLE AND TUBE .............77
Hydraulic Layout .................................................. ...77
Removal and Installation .........................................77
Inspection and Adjustment ......................................78
Revision: 2010 May2011 QX56