INFINITI QX56 2010 Factory Service Manual

EX-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005260138
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005260139
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
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PRECAUTIONSEX-3
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5. When the repair work is completed, return the ignition switch to the
″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Revision: April 20092010 QX56

EX-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000005149540
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000005149541
Tool number
(Kent-Moore No.)
Tool name Description
KV10114400
(J-38365)
Heated oxygen sensor wrench Loosening or tightening heated oxygen sen-
sors:
a: 22 mm (0.87 in)
S-NT636
(Kent-Moore No.)
Tool name
Description
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner Reconditioning the exhaust system threads
before installing a new heated oxygen sensor
(Use with anti-seize lubricant shown below):
a: J-43897-18 (18 mm, 0.71 in) dia.
b: J-43897-12 (12 mm, 0.47 in) dia.
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL specifica-
tion MIL-A-907) Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
Power tool Loosening nuts and bolts
AEM488
AEM489
PBIC0190E
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EXHAUST SYSTEMEX-5
< ON-VEHICLE MAINTENANCE >
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ON-VEHICLE MAINTENANCE
EXHAUST SYSTEM
Checking Exhaust SystemINFOID:0000000005149542
Check exhaust pipes, muffler and mounting for improper
attachment, leaks, cracks, damage or deterioration.
• If anything is found, repair or replace damaged parts.
SMA211A
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EX-6
< ON-VEHICLE REPAIR >
EXHAUST SYSTEM
ON-VEHICLE REPAIR
EXHAUST SYSTEM
Exploded ViewINFOID:0000000005149543
Exhaust System
Removal and InstallationINFOID:0000000005149544
WARNING:
• Perform the operation with the exhaust system fully cooled. The system will be hot just after the
engine stops.
• Be careful not to cut your hand on the heat insulator edge.
CAUTION:
• Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat
resistance, corrosion resistance, and shape.
REMOVAL
Remove exhaust system components using power tool.
• Remove heated oxygen sensor using Tool as needed.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Always replace exhaust gaskets with new ones when reassembling.
AWBIA0667GB
1. Tailpipe hanger bracket 2. Tailpipe3. Gasket
4. Main muffler 5. Right front exhaust tube6. Ring gasket
7. Heated oxygen sensor 2 (bank 2) 8. Heated oxygen sensor 2 (bank 1) 9. Left front exhaust tube
10. Center exhaust tube 11. Muffler hanger bracket front 12. Muffler hanger bracket rear
Front
Tool number KV10114400 (J-38365)
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• Before installing a new heated o
xygen sensor, clean and lube the exhaust tube threads using suit-
able tool.
• Discard any heated oxygen sensor which has been dr opped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a co ncrete floor; replace with a new one.
• Do not over-tighten the heated oxygen sensor. Doing so may damage the heated oxygen sensor, resulting in the MIL coming on.
• If any mounting insulator is badly deformed, repair or replace it. If deposits such as mud pile up on
the mounting insulators, clean and inspect them.
• Temporarily tighten the nuts on the exhaust manifold side and th e bolts on the vehicle side. Check
each part for interference with other components, an d then tighten the nuts and bolts to specifica-
tion.
INSPECTION AFTER INSTALLATION
• With the engine running, check exhaust tube joints for gas leakage and unusual noises.
• Check to ensure that mounting brackets and mount ing rubbers are installed properly and free from undue
stress. Improper installation could resu lt in excessive noise and vibration.
Oxygen sensor thread cleaner : — (J-43897-18)
Oxygen sensor thread cleaner : — (J-43897-12)
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EXL-1
DRIVER CONTROLS
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CONTENTS
EXTERIOR LIGHTING SYSTEM
BASIC INSPECTION ....... .............................4
DIAGNOSIS AND REPAIR WORKFLOW ..... .....4
Work Flow ........................................................... ......4
FUNCTION DIAGNOSIS ...............................7
HEADLAMP .................................................... .....7
System Diagram .................................................. ......7
System Description ...................................................7
Component Parts Location ........................................7
Component Description .............................................7
DAYTIME LIGHT SYSTEM .................................9
System Diagram .................................................. ......9
System Description ...................................................9
Component Parts Location ........................................9
Component Description ...........................................10
AUTO LIGHT SYSTEM ......................................11
System Diagram ......................................................11
System Description .................................................11
Component Parts Location ......................................12
Component Description ...........................................12
HEADLAMP AIMING SYSTEM (MANUAL) .......13
System Diagram .................................................. ....13
System Description .................................................13
Component Parts Location ......................................13
Component Description ...........................................13
FRONT FOG LAMP ............................................14
System Diagram .................................................. ....14
System Description .................................................14
Component Parts Location ......................................14
Component Description ...........................................14
TURN SIGNAL AND HAZARD WARNING
LAMPS ...............................................................
15
System Diagram .................................................. ....15
System Description .................................................15
Component Parts Location ......................................15
Component Description ....................................... ....16
PARKING, LICENSE PLATE AND TAIL
LAMPS ..............................................................
17
System Diagram ......................................................17
System Description ..................................................17
Component Parts Location ......................................17
Component Description ...........................................18
DIAGNOSIS SYSTEM (BCM) ...........................19
HEADLAMP ........................................................... ....19
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP) ...........................................................
19
FLASHER ............................................................... ....20
FLASHER : CONSULT-III Function (BCM -
FLASHER) ...............................................................
20
COMB SW .............................................................. ....20
COMB SW : CONSULT-III Function (BCM -
COMB SW) ..............................................................
20
DIAGNOSIS SYSTEM (IPDM E/R) ...................22
Diagnosis Description ..............................................22
CONSULT - III Function (IPDM E/R) .......................24
COMPONENT DIAGNOSIS .........................27
POWER SUPPLY AND GROUND CIRCUIT ....27
BCM (BODY CONTROL MODULE) ...................... ....27
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ............................................................ ....
27
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) .......................... ....
28
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .................................................................. ....
28
HEADLAMP (HI) CIRCUIT ................................30
Description ...............................................................30
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EXL-2
Component Function Check ...................................30
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
30
Diagnosis Procedure - With Daytime Light System
...
31
HEADLAMP (LO) CIRCUIT ...............................33
Description ........................................................... ...33
Component Function Check ...................................33
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
33
Diagnosis Procedure - With Daytime Light System
...
34
FRONT FOG LAMP CIRCUIT ...........................36
Description ........................................................... ...36
Component Function Check ...................................36
Diagnosis Procedure ..............................................36
PARKING LAMP CIRCUIT ................................38
Description ........................................................... ...38
Component Function Check ...................................38
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
38
Diagnosis Procedure - With Daytime Light System
...
41
TURN SIGNAL LAMP CIRCUIT ........................44
Description ........................................................... ...44
Component Function Check ...................................44
Diagnosis Procedure ..............................................44
OPTICAL SENSOR ...........................................47
Description ..............................................................47
Component Function Check ...................................47
Diagnosis Procedure ..............................................47
HEADLAMP AIMING SWITCH ..........................49
Description ........................................................... ...49
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
49
Diagnosis Procedure - With Daytime Light System
...
50
HEADLAMP .......................................................52
Wiring Diagram .................................................... ...52
DAYTIME LIGHT SYSTEM ................................56
Wiring Diagram .................................................... ...56
AUTO LIGHT SYSTEM ......................................62
Wiring Diagram .................................................... ...62
HEADLAMP AIMING SYSTEM (MANUAL) ......69
Wiring Diagram .................................................... ...69
FRONT FOG LAMP SYSTEM ...........................73
Wiring Diagram .................................................... ...73
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM .............................................. ...
77
Wiring Diagram .................................................... ...77
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ...............................................
84
Wiring Diagram .................................................... ...84
STOP LAMP ......................................................91
Wiring Diagram .................................................... ...91
BACK-UP LAMP ............................................ ...95
Wiring Diagram .................................................... ...95
TRAILER TOW .................................................100
Wiring Diagram .....................................................100
ECU DIAGNOSIS ......................................106
BCM (BODY CONTROL MODULE) ............... ..106
Reference Value .................................................. .106
Terminal Layout ....................................................109
Physical Values .....................................................109
Wiring Diagram .....................................................115
Fail Safe ...............................................................119
DTC Inspection Priority Chart .............................120
DTC Index ............................................................120
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................
122
Reference Value .................................................. .122
Terminal Layout ....................................................124
Physical Values .....................................................125
Wiring Diagram .....................................................130
Fail Safe ...............................................................133
DTC Index ............................................................135
SYMPTOM DIAGNOSIS ...........................136
EXTERIOR LIGHTING SYSTEM SYMPTOMS ..136
Symptom Table .................................................... .136
NORMAL OPERATING CONDITION ...............138
Description ........................................................... .138
BOTH SIDE HEADLAMPS DO NOT SWITCH
TO HIGH BEAM ................................................
139
Description ........................................................... .139
Diagnosis Procedure .............................................139
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON .....................................................
140
Description ............................................................140
Diagnosis Procedure .............................................140
PARKING, LICENSE PLATE AND TAIL
LAMPS ARE NOT TURNED ON ......................
141
Description ........................................................... .141
Diagnosis Procedure .............................................141
BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON .....................................................
142
Description ............................................................142
Diagnosis Procedure .............................................142
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PRECAUTION ....... .....................................143
PRECAUTIONS .............................................. ..143
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
143
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ..
143
General precautions for service operations ..........144
ON-VEHICLE REPAIR .... ...........................145
ADJUSTMENT AND INSPECTION ................ ..145
HEADLAMP ........................................................... ..145
HEADLAMP : Aiming Adjustment .........................145
FRONT FOG LAMP ............................................... ..146
FRONT FOG LAMP : Aiming Adjustment .............146
REMOVAL AND INSTALLATION .............148
HEADLAMP .................................................... ..148
Bulb Replacement .................................................148
Removal and Installation .......................................149
Disassembly and Assembly ................................ ..149
AUTO LIGHT SYSTEM ....................................151
Removal and Installation .......................................151
FRONT FOG LAMP ........................................152
Bulb Replacement ............................................... ..152
Removal and Installation .......................................152
LIGHTING & TURN SIGNAL SWITCH ...........154
Removal and Installation .......................................154
HAZARD SWITCH ..........................................155
Removal and Installation .......................................155
LICENSE PLATE LAMP .................................156
Bulb Replacement .................................................156
Removal and Installation .......................................156
STOP LAMP ....................................................157
Bulb Replacement .................................................157
Removal and Installation .......................................157
REAR COMBINATION LAMP .........................158
Bulb Replacement .................................................158
Removal and Installation .......................................158
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... .
159
BULB SPECIFICATIONS ................................159
Headlamp ............................................................ ..159
Exterior Lamp ........................................................159
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EXL-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000005146603
OVERALL SEQUENCE
AWLIA1661GB
Revision: April 20092010 QX56