2011 INFINITI QX56 fog light

EC-148
< BASIC INSPECTION >[VK56VD]
IDLE AIR VOLUME LEARNING
IDLE AIR VOLUME LEARNING
DescriptionINFOID:0000000006217750
Idle Air Volume Learning is a function of ECM to learn
the idle air volume that keeps engine idle speed within
the specific range. It must be perfo rmed under the following conditions:
 Each time the electric throttle control actuator or ECM is replaced.
 Idle speed or ignition timing is out of the specification.
Work ProcedureINFOID:0000000006217751
1.PRECONDITIONING
Check that all of the following conditions are satisfied.
Learning will be cancelled if any of the follo wing conditions are missed for even a moment.
 Battery voltage: More than 12.9 V (At idle)
 Engine coolant temperature: 70 - 105 °C (158 - 221 °F)
 Selector lever position: P or N
 Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not illuminate.
 Steering wheel: Neutral (Straight-ahead position)
 Vehicle speed: Stopped
 Transmission: Warmed-up
- With CONSULT-III: Drive vehicle until “ATF TEMP 2” in “DATA MONITOR” mode of “A/T” system indicates
less than 0.9 V.
- Without CONSULT-III: Drive vehicle for 10 minutes.
Will CONSULT-III be used?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM IDLE AIR VOLUME LEARNING
WITH CONSULT-III
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-146, "
Work Procedure".
2. Perform Throttle Valve Closed Position Learning. EC-147, "
Work Procedure".
3. Start engine and warm it up to normal operating temperature.
4. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
5. Touch “START” and wait 20 seconds.
Is
“CMPLT” displayed on CONSULT-III screen?
YES >> GO TO 4.
NO >> GO TO 5.
3.PERFORM IDLE AIR VOLUME LEARNING
WITHOUT CONSULT-III
NOTE:
 It is better to count the ti me accurately with a clock.
 It is impossible to switch the di agnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-146, "
Work Procedure".
2. Perform Throttle Valve Closed Position Learning. EC-147, "
Work Procedure".
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Confirm that accelerator pedal is fully releas ed, turn ignition switch ON and wait 3 seconds.
6. Repeat the following procedure quickly 5 times within 5 seconds.
- Fully depress the accelerator pedal.
- Fully release the accelerator pedal.
7. Wait 7 seconds, fully depress the accelerator pedal for approx. 20 seconds until the MIL stops blinking
and turns ON.
8. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
Revision: 2010 May2011 QX56

FUEL PRESSUREEC-153
< BASIC INSPECTION > [VK56VD]
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FUEL PRESSURE
Work ProcedureINFOID:0000000006217756
FUEL PRESSURE RELEASE
WITH CONSULT-III
1. Turn ignition switch ON.
2. Perform “FUEL PRESSURE RELEASE” in
“WORK SUPPORT” mode with CONSULT-III.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
WITHOUT CONSULT-III
1. Remove fuel pump fuse in IPDM E/R. NOTE:
 For the fuse number, refer to EC-114, "
Wiring Diagram".
 For the fuse arrangement, refer to PG-143, "
Fuse, Connector and Terminal Arrangement".
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
LOW FUEL PRESSURE CHECK
CAUTION:
 Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
 The fuel hose connection method used when taking fuel pressure check must not be used for other
purposes.
 Do not perform fuel pressure check with electrical syst ems operating (i.e. lights, rear defogger, A/C,
etc.) Fuel pressure gauge may indicate false readin gs due to varying engine load and changes in
manifold vacuum.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out.
1. Release fuel pressure to zero.
2. Prepare fuel hose for fuel pressure check (B) and fuel tube adapter [SST (KV10118400)] (D), then connect fuel pressure
gauge (A).
CAUTION:
 Use suitable fuel hose for fuel pressure check (genuine
NISSAN fuel hose without quick connector).
 To avoid unnecessary force or tension to hose, use mod-
erately long fuel hose for fuel pressure check.
 Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
 Use Pressure Gauge to check fuel pressure.
3. Disconnect fuel feed hose from fuel tube. Refer to EM-43, "
Exploded View".
CAUTION:
Do not twist or kink fuel hose because it is plastic hose.
To quick connector
To fuel tube (engine side)
C : Hose clamp
PBIB2982E
Revision: 2010 May2011 QX56

ELECTRICAL LOAD SIGNALEC-493
< DTC/CIRCUIT DIAGNOSIS > [VK56VD]
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ELECTRICAL LOAD SIGNAL
DescriptionINFOID:0000000006217994
The electrical load signal (Rear window defogger switch
signal, headlamp switch signal, heater fan switch sig-
nal, etc.) is transferred via the CAN communication line.
Component Function CheckINFOID:0000000006217995
1.CHECK REAR WINDOW DEF OGGER SWITCH FUNCTION
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-III.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Go to EC-493, "
Diagnosis Procedure".
2.CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Go to EC-493, "
Diagnosis Procedure".
3.CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-493, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006217996
1.INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to EC-493, "
Compo-
nent Function Check".
Which circuit is related to the incident?
Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.
2.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to DEF-24, "
Work Flow".
Monitor item Condition Indication
LOAD SIGNAL Rear window defogger switch ON ON
OFF OFF
Monitor item Condition Indication
LOAD SIGNAL Lighting switch ON at 2nd position ON
OFF OFF
Monitor item Condition Indication
HEATER FAN SW Heater fan control switch ON ON
OFF OFF
Revision: 2010 May2011 QX56

EC-538
< SERVICE DATA AND SPECIFICATIONS (SDS) [VK56VD]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Idle SpeedINFOID:0000000006218038
*: Under the following conditions
 A/C switch: OFF
 Electric load: OFF (Lights, heater fan & rear window defogger)
 Steering wheel: Kept in straight-ahead position
Ignition TimingINFOID:0000000006218039
*: Under the following conditions
 A/C switch: OFF
 Electric load: OFF (Lights, heater fan & rear window defogger)
 Steering wheel: Kept in straight-ahead position
Calculated Load ValueINFOID:0000000006218040
Mass Air Flow SensorINFOID:0000000006218041
*: Engine is warmed up to normal operating temperature and running under no load.Condition Specification
No load* (in P or N position) 600 ± 50 rpm
Condition Specification
No load* (in P or N position) 12 ± 2 °BTDC
Condition Specification (U sing CONSULT-III or GST)
At idle 5 – 35%
At 2,500 rpm 5 – 35%
Supply voltageBattery voltage (11 – 14 V)
Output voltage at idle 0.9 – 1.1 V*
Mass air flow (Using CONSULT-III or GST) 1.0 – 5.0 g/s at idle*
7.0 – 20.0 g/s at 2,500 rpm*
Revision: 2010 May2011 QX56

EXL-1
DRIVER CONTROLS
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SECTION EXL
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EXL
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CONTENTS
EXTERIOR LIGHTING SYSTEM
XENON TYPE
PRECAUTION ................ ...............................
5
PRECAUTIONS .............................................. .....5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
EXTERIOR LIGHTING SYSTEM .................................6
EXTERIOR LIGHTING SYSTEM : Component
Parts Location ..................................................... ......
6
EXTERIOR LIGHTING SYSTEM :
Component Description ............................................
7
FRONT COMBINATION LAMP ............................. ......8
FRONT COMBINATION LAMP : Xenon Head-
lamp ..........................................................................
8
FRONT COMBINATION LAMP : HID control unit ......9
FRONT COMBINATION LAMP : High Beam Sole-
noid ...........................................................................
9
FRONT COMBINATION LAMP : Aiming Motor ........9
FRONT COMBINATION LAMP : Swivel Actuator ......9
SYSTEM .............................................................10
HEADLAMP SYSTEM ...............................................10
HEADLAMP SYSTEM : Syst em Diagram ...............10
HEADLAMP SYSTEM : System Description ....... ....10
HEADLAMP SYSTEM : Fail-safe ............................10
AUTO LIGHT SYSTEM ..... ........................................11
AUTO LIGHT SYSTEM : System Diagram ......... ....11
AUTO LIGHT SYSTEM : System Description (For
CANADA) ................................................................
11
AUTO LIGHT SYSTEM : System Description (Ex-
cept for CANADA) ...................................................
12
DAYTIME RUNNING LIGHT SYSTEM ......................14
DAYTIME RUNNING LIGH T SYSTEM : System
Diagram ............................................................... ....
14
DAYTIME RUNNING LIGHT SYSTEM : System
Description ........................................................... ....
14
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM ....14
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: System Diagram ................................................ ....
15
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: System Description ................................................
15
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: Fail-Safe ................................................................
17
HEADLAMP AIMING CONTROL (MANUAL) ...........17
HEADLAMP AIMING CO NTROL (MANUAL) :
System Description .............................................. ....
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM .....................................................................
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Diagram ................................ ....
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Description ................................
18
PARKING, LICENSE PLATE, SIDE MARKER AND
TAIL LAMP SYSTEM ............................................. ....
18
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : System Diagram ........
18
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : System Description ....
19
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : Fail-safe .....................
19
FRONT FOG LAMP SYSTEM ............................... ....19
FRONT FOG LAMP SYSTEM : System Diagram ....20
FRONT FOG LAMP SYSTEM : System Descrip-
tion ....................................................................... ....
20
FRONT FOG LAMP SYSTEM : Fail-Safe ...............20
EXTERIOR LAMP BATTERY SAVER SYSTEM ... ....20
EXTERIOR LAMP BATTERY SAVER SYSTEM :
System Diagram ......................................................
20
Revision: 2010 May2011 QX56

EXL-3
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EXTERIOR LAMP FUSE ................................ ....85
Diagnosis Procedure ........................................... ....85
HEADLAMP (HI) CIRCUIT .................................86
Component Function Check ................................ ....86
Diagnosis Procedure ...............................................86
HEADLAMP (LO) CIRCUIT ................................88
Component Function Check ................................ ....88
Diagnosis Procedure ...............................................88
XENON HEADLAMP ..........................................90
Diagnosis Procedure ........................................... ....90
HEADLAMP LEVELIZER CIRCUIT ...................91
Component Function Check ................................ ....91
Diagnosis Procedure ...............................................91
HEADLAMP AIMING SYSTEM (MANUAL) .......93
Component Inspection ........................................ ....93
FRONT FOG LAMP CIRCUIT ............................94
Component Function Check ................................ ....94
Diagnosis Procedure ...............................................94
PARKING LAMP CIRCUIT ............................. ....96
Component Function Check ................................ ....96
Diagnosis Procedure ...............................................96
FRONT SIDE MARKER LAMP CIRCUIT ...........98
Component Function Check ................................ ....98
Diagnosis Procedure ...............................................98
TURN SIGNAL LAMP CIRCUIT .........................99
Component Function Check ................................ ....99
Diagnosis Procedure ...............................................99
OPTICAL SENSOR ..........................................102
Component Function Check ................................ ..102
Diagnosis Procedure .............................................102
HAZARD SWITCH .......................................... ..105
Component Function Check ................................ ..105
Diagnosis Procedure .............................................105
AFS SWITCH ....................................................107
Component Function Check ................................ ..107
Diagnosis Procedure .............................................107
Component Inspection ..........................................108
TAIL LAMP CIRCUIT .......................................109
BODY SIDE ........................................................... ..109
BODY SIDE : Component Function Check ...........109
BODY SIDE : Diagnosis Procedure ......................109
BACK DOOR SIDE ................................................ ..110
BACK DOOR SIDE : Component Function Check ..110
BACK DOOR SIDE : Diagnosis Procedure ...........111
LICENSE PLATE LAMP CIRCUIT ...................112
Component Function Check ................................ ..112
Diagnosis Procedure .............................................112
SYMPTOM DIAGNOSIS ............................113
EXTERIOR LIGHTING SYSTEM SYMPTOMS .113
Symptom Table ................................................... ..113
NORMAL OPERATING CONDITION .............116
Description .............................................................116
BOTH SIDE HEADLAMPS DO NOT SWITCH
TO HIGH BEAM ..............................................
117
Description .............................................................117
Diagnosis Procedure .............................................117
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON ...................................................
118
Description ........................................................... ..118
Diagnosis Procedure .............................................118
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMPS ARE NOT TURNED ON ...
119
Description .............................................................119
Diagnosis Procedure .............................................119
BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON ...................................................
120
Description ........................................................... ..120
Diagnosis Procedure .............................................120
PERIODIC MAINTENANCE ......................121
HEADLAMP AIMING ADJUSTMENT .............121
description ........................................................... ..121
Aiming Adjustment Procedure ...............................122
FRONT FOG LAMP AIMING ADJUSTMENT .123
Description .............................................................123
Aiming Adjustment Procedure ...............................123
REMOVAL AND INSTALLATION .............125
FRONT COMBINATION LAMP ......................125
Exploded View ..................................................... ..125
Removal and Installation .......................................125
Replacement .........................................................126
Disassembly and Assembly ...................................127
FRONT FOG LAMP ........................................128
Exploded View .......................................................128
Removal and Installation .......................................128
Replacement .........................................................128
SIDE TURN SIGNAL LAMP ............................130
Exploded View .......................................................130
Removal and Installation .......................................130
OPTICAL SENSOR .........................................131
Exploded View .......................................................131
Removal and Installation .......................................131
LIGHTING & TURN SIGNAL SWITCH ...........132
Exploded View .......................................................132
Revision: 2010 May2011 QX56

COMPONENT PARTSEXL-7
< SYSTEM DESCRIPTION > [XENON TYPE]
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*1: With headlamp aiming control system (manual) models
*2: With AFS system models
EXTERIOR LIGHTING SYSTEM : Component DescriptionINFOID:0000000006213888
1. Combination meter 2. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Compon ent Parts Loca-
tion"
3. Optical sensor
4. IPDM E/R Refer to PCS-4, "
Component Parts
Location"
5. ECM
Refer to EC-16, "
Component Parts
Location"
6. Parking lamp
7. Front turn signal lamp 8. Front fog lamp 9. Headlamp
10. Front side marker lamp 11. Combination switch 12. Headlamp aiming switch*
1
13. Front door switch (driver side) 14.
Steering angle sensor*2
Refer to BRC-10, "Component Parts
Location"
15. License plate lamp
16. Tail lamp 17. Rear turn signal lamp 18. Rear side marker lamp
19. Hazard switch 20. Side turn signal lamp 21. Headlamp swivel actuator
22. Headlamp aiming motor 23. AFS switch*
224.Rear height sensor*2
25.AFS control unit*226.Front height sensor*2
A. Front combination lamp (back) B. View with instrument driver lower
panel (LH)C. Rear suspension member (RH)
D. View with instrument lower cover E. Front suspension arm (RH)
Part Description
BCM Controls the exterior lighting system.
ECM*
1Transmits engine speed signal to AFS control unit. (via CAN communication)
TCM*
1Transmits Shift position signal to AFS control unit. (via CAN communication)
IPDM E/R Controls the integrated relay, and supplies voltage to the load according to the request
from BCM (via CAN communication).
AFS control unit*
1AFS control unit judges the vehicle condition from each signal. AFS control unit con-
trols AFS function and the headlamp aiming.
Combination meter  Outputs the vehicle speed signal (8-pulse) to AFS control unit.
 Blinks the turn signal indicator lamp and outputs the turn signal operating sound with
integrated buzzer according to the request from BCM (via CAN communication).
 Turns the tail lamp indicator lamp and high beam indicator lamp ON according to the
request from BCM (via CAN communication).
 Turns the AFS OFF indicator lamp ON/OFF /blinking according to the request from
AFS control unit (via CAN communication).
Headlamp assembly Xenon bulb Refer to
EXL-8, "
FRONT COMBINATION LAMP : Xenon Headlamp".
HID control unit Refer to EXL-9, "
FRONT COMBINATION LAMP : HID control unit".
High beam solenoid Refer to EXL-9, "
FRONT COMBINATION LAMP : High Beam Solenoid".
Aiming motor Refer to EXL-9, "
FRONT COMBINATION LAMP : Aiming Motor".
Swivel actuator*
1Refer to EXL-9, "FRONT COMBINATION LAMP : Swivel Actuator".
Height sensor*
1
 The height sensor is installed to the front suspension member and rear suspension member.
 The height sensor detects the suspension arm displacement as the vehicle height change.
 The height sensor transmits the height sensor signal to AFS control unit.
NOTE:
The sensor angle of the unloaded vehicle position is the reference value.
Optical sensor Optical sensor converts the outside brightness (lux) to voltage and transmits the opti-
cal sensor signal to BCM.
Revision: 2010 May2011 QX56

EXL-10
< SYSTEM DESCRIPTION >[XENON TYPE]
SYSTEM
SYSTEM
HEADLAMP SYSTEM
HEADLAMP SYSTEM : System DiagramINFOID:0000000006213894
HEADLAMP SYSTEM : System DescriptionINFOID:0000000006213895
OUTLINE
Headlamp is controlled by combination switch r
eading function and headlamp control function of BCM, and
relay control function of IPDM E/R.
HEADLAMP (LO) OPERATION
 BCM detects the combination switch conditi on with the combination switch reading function.
 BCM transmits the low beam request signal to IPDM E/R via CAN communication according to the head-
lamp (LO) ON condition.
Headlamp (LO) ON condition- Lighting switch 2ND
- Lighting switch AUTO (auto light function ON judgment)
- Lighting switch AUTO, with the front fog la mp switch ON and the ignition switch ON
- Lighting switch PASS
 IPDM E/R turns the integrated headlamp low relay ON , and turns the headlamp ON according to the low
beam request signal.
HEADLAMP (HI) OPERATION
 BCM transmits the high beam request signal to IPDM E/R and the combination meter via CAN communica- tion according to the headlamp (HI) ON condition.
Headlamp (HI) ON condition
- Lighting switch HI with the lighting switch 2ND or AUTO (auto light function ON judgment)
- Lighting switch PASS
- Lighting switch AUTO, with the front fog lamp swit ch ON, the ignition switch ON and lighting switch HI
 Combination meter turns the high beam indicator lamp ON according to the high beam request signal.
 IPDM E/R turns the integrated headlamp high relay ON , and turns the headlamp ON according to the high
beam request signal.
HEADLAMP SYSTEM : Fail-safeINFOID:0000000006213896
CAN COMMUNICATION CONTROL
When CAN communication with BCM is impossible, IPDM E/R performs fail-safe control. After CAN communi-
cation recovers normally, it also returns to normal control.
If No CAN Communication Is Available With BCM
JMLIA1083GB
Revision: 2010 May2011 QX56