INFINITI QX56 2006 Factory Service Manual

GI-50
IDENTIFICATION INFORMATION
Revision: November 20092006 QX56
DimensionsEAS001G4
Unit: mm (in)
Wheels & TiresEAS001G5
Drive type2WD 4WD
Overall length 5255 (206.9) 5255 (206.9)
Overall width 2001 (78.8) 2001 (78.8)
Overall height (with roof rack) 1976.8 (77.8) 1997.7 (78.7)
Front tread width 1725 (67.9) 1725 (67.9)
Rear tread width 1725 (67.9) 1725 (67.9)
Wheelbase 3130 (123.2) 3130 (123.2)
Minimum Running Ground Clearance (at front sus-
pension) With standard
undercover
254.8 (10.03) 273.7 (10.77)
With oil pan skid
plate 250.5 (9.86) 269.5 (10.61)
Drive Type Grade
Road wheelTireSpare tire size
All LE7-Spoke 18x8J Chromium Aluminum
Alloy P265/70R18
P265/70R18

TERMINOLOGYGI-51
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TERMINOLOGYPFP:00011
SAE J1930 Terminology List EAS001G6
All emission related terms used in this publication in accordance with SAE J1930 are listed. Accordingly, new
terms, new acronyms/abbreviations and old terms are listed in the following chart.
NEW TERMNEW ACRONYM /
ABBREVIATION OLD TERM
Air cleaner ACLAir cleaner
Barometric pressure BARO***
Barometric pressure sensor-BCDD BAROS-BCDD BCDD
Camshaft position CMP***
Camshaft position sensor CMPSCrank angle sensor
Canister ***Canister
Carburetor CARBCarburetor
Charge air cooler CACIntercooler
Closed loop CLClosed loop
Closed throttle position switch CTP switchIdle switch
Clutch pedal position switch CPP switchClutch switch
Continuous fuel injection system CFI system***
Continuous trap oxidizer system CTOX system***
Crankshaft position CKP***
Crankshaft position sensor CKPS***
Data link connector DLC***
Data link connector for CONSULT-II DLC for CONSULT-II Diagnostic connector for CONSULT-II
Diagnostic test mode DTMDiagnostic mode
Diagnostic test mode selector DTM selectorDiagnostic mode selector
Diagnostic test mode I DTM IMode I
Diagnostic test mode II DTM IIMode II
Diagnostic trouble code DTCMalfunction code
Direct fuel injection system DFI system***
Distributor ignition system DI systemIgnition timing control
Early fuel evaporation-mixture heater EFE-mixture heater Mixture heater
Early fuel evaporation system EFE systemMixture heater control
Electrically erasable programmable read
only memory EEPROM
***
Electronic ignition system EI systemIgnition timing control
Engine control EC***
Engine control module ECMECCS control unit
Engine coolant temperature ECTEngine temperature
Engine coolant temperature sensor ECTS Engine temperature sensor
Engine modification EM***
Engine speed RPMEngine speed
Erasable programmable read only memory EPROM ***
Evaporative emission canister EVAP canisterCanister
Evaporative emission system EVAP systemCanister control solenoid valve
Exhaust gas recirculation valve EGR valveEGR valve

GI-52
TERMINOLOGY
Revision: November 20092006 QX56
Exhaust gas recirculation control-BPT
valveEGRC-BPT valve
BPT valve
Exhaust gas recirculation control-solenoid
valve EGRC-solenoid valve
EGR control solenoid valve
Exhaust gas recirculation temperature sen-
sor EGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable
read only memory FEEPROM
***
Flash erasable programmable read only
memory FEPROM
***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid
valve ***
PRVR control solenoid valve
Fuel trim FT ***
Heated Oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control
valve IACV-AAC valve
Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control sole-
noid valve IACV-idle up control solenoid valve Idle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
Malfunction indicator lamp MIL Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel ratio control solenoid valve
Multiport fuel injection System MFI system Fuel injection control
NEW TERM
NEW ACRONYM /
ABBREVIATION OLD TERM

TERMINOLOGYGI-53
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Nonvolatile random access memory NVRAM***
On board diagnostic system OBD systemSelf-diagnosis
Open loop OLOpen loop
Oxidation catalyst OCCatalyst
Oxidation catalytic converter system OC system ***
Oxygen sensor O2SExhaust gas sensor
Park position switch ***Park switch
Park/neutral position switch PNP switchPark/neutral switch
Inhibitor switch
Neutral position switch
Periodic trap oxidizer system PTOX system***
Positive crankcase ventilation PCVPositive crankcase ventilation
Positive crankcase ventilation valve PCV valve PCV valve
Powertrain control module PCM***
Programmable read only memory PROM***
Pulsed secondary air injection control sole-
noid valve PAIRC solenoid valve
AIV control solenoid valve
Pulsed secondary air injection system PAIR system Air induction valve (AIV) control
Pulsed secondary air injection valve PAIR valve Air induction valve
Random access memory RAM***
Read only memory ROM***
Scan tool ST***
Secondary air injection pump AIR pump***
Secondary air injection system AIR system***
Sequential multiport fuel injection system SFI system Sequential fuel injection
Service reminder indicator SRI***
Simultaneous multiport fuel injection sys-
tem ***
Simultaneous fuel injection
Smoke puff limiter system SPL system***
Supercharger SC***
Supercharger bypass SCB***
System readiness test SRT***
Thermal vacuum valve TVVThermal vacuum valve
Three way catalyst TWCCatalyst
Three way catalytic converter system TWC system ***
Three way + oxidation catalyst TWC + OCCatalyst
Three way + oxidation catalytic converter
system TWC + OC system
***
Throttle body TBThrottle chamber
SPI body
Throttle body fuel injection system TBI system Fuel injection control
Throttle position TPThrottle position
Throttle position sensor TPSThrottle sensor
Throttle position switch TP switchThrottle switch
Torque converter clutch solenoid valve TCC solenoid valve Lock-up cancel solenoid
Lock-up solenoid
NEW TERM
NEW ACRONYM /
ABBREVIATION OLD TERM

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TERMINOLOGY
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***: Not applicableTransmission control module
TCM A/T control unit
Turbocharger TC Turbocharger
Vehicle speed sensor VSS Vehicle speed sensor
Volume air flow sensor VAFS Air flow meter
Warm up oxidation catalyst WU-OC Catalyst
Warm up oxidation catalytic converter sys-
tem WU-OC system
***
Warm up three way catalyst WU-TWC Catalyst
Warm up three way catalytic converter sys-
tem WU-TWC system
***
Wide open throttle position switch WOTP switch Full switch
NEW TERM
NEW ACRONYM /
ABBREVIATION OLD TERM

GW-1
GLASSES, WINDOW SYSTEM & MIRRORS
I BODY
CONTENTS
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SECTION
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PRECAUTIONS .....................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Handling for Adhesive and Primer ...................... ..... 3
PREPARATION ...................................................... ..... 4
Special Service Tool ............................................ ..... 4
Commercial Service Tool .................................... ..... 4
SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 5
Work Flow ................................................................ 5 CUSTOMER INTERVIEW ................................ ..... 5
DUPLICATE THE NOISE AND TEST DRIVE .. ..... 6
CHECK RELATED SERVICE BULLETINS ...... ..... 6
LOCATE THE NOISE AND IDENTIFY THE
ROOT CAUSE ................................................. ..... 6
REPAIR THE CAUSE ...................................... ..... 6
CONFIRM THE REPAIR .................................. ..... 7
Generic Squeak and Rattle Troubleshooting ...... ..... 7
INSTRUMENT PANEL ..................................... ..... 7
CENTER CONSOLE ........................................ ..... 7
DOORS ............................................................ ..... 7
TRUNK ............................................................. ..... 8
SUNROOF/HEADLINER .................................. ..... 8
OVERHEAD CONSOLE (FRONT AND REAR) ..... 8
SEATS .............................................................. ..... 8
UNDERHOOD .................................................. ..... 8
Diagnostic Worksheet ......................................... ..... 9
WINDSHIELD GLASS ........................................... ....11
Removal and Installation ..................................... .... 11
REMOVAL ........................................................ .... 11
INSTALLATION ................................................ .... 11
REAR WINDOW GLASS AND MOLDING ............ ... 13
Removal and Installation ..................................... ... 13
REMOVAL ........................................................ ... 13
INSTALLATION ................................................ ... 14
POWER WINDOW SYSTEM ................................. ... 15
Component Parts and Harness Connector Location ... 15
System Description ............................................. ... 16
MANUAL OPERATION .................................... ... 16
AUTO OPERATION ......................................... ... 18POWER WINDOW SERIAL LINK ....................
... 18
POWER WINDOW LOCK ................................ ... 19
RETAINED POWER OPERATION ................... ... 19
ANTI-PINCH SYSTEM ..................................... ... 19
POWER WINDOW CONTROL BY THE FRONT
DOOR LOCK ASSEMBLY LH (KEY CYLINDER
SWITCH) .......................................................... ... 19
CAN Communication System Description ........... ... 19
Schematic ............................................................ ... 20
Wiring Diagram — WINDOW — ............................. 22
Terminal and Reference Value for Main Power Win-
dow and Door Lock/Unlock Switch ...................... ... 30
Terminal and Reference Value for Power Window
and Door Lock/Unlock Switch RH .......................... 30
Terminal and Reference Value for BCM .............. ... 32
Work Flow ............................................................... 33
CONSULT-II Function (BCM) .............................. ... 33
CONSULT-II INSPECTION PROCEDURE ....... ... 33
ACTIVE TEST ..................................................... 34
WORK SUPPORT ............................................ ... 34
DATA MONITOR .............................................. ... 34
Trouble Diagnoses Symptom Chart .................... ... 35
BCM Power Supply and Ground Circuit Check ... ... 37
Main Power Window and Door Lock/Unlock Switch
Power Supply and Ground Circuit Check ............ ... 38
Power Window and Door Lock/Unlock Switch RH
Power Supply and Ground Circuit Check ............ ... 39
Front Power Window Motor LH Circuit Check ..... ... 40
Front Power Window Motor RH Circuit Check ....... 41
Limit Switch Circuit Check Front LH .................... ... 41
Limit Switch Circuit Check Front RH ................... ... 43
Encoder Circuit Check Front LH .......................... ... 44
Encoder Circuit Check Front RH ......................... ... 46
Door Switch Check ................................................. 48
Front Door Lock Assembly LH (Key Cylinder Switch)
Check .................................................................. ... 49
Power Window Serial Link Check Front LH and RH ... 51
Rear Power Window Control Unit LH or RH Power
Supply and Ground Circuit Check ....................... ... 53
Rear Power Window Switch LH or RH Power Supply

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and Ground Circuit Check ...................................
... 54
Rear Power Window Motor LH Circuit Check ......... 54
Rear Power Window Motor RH Circuit Check ..... ... 55
Limit Switch Circuit Check Rear LH and RH ........ ... 56
Encoder Circuit Check Rear LH or RH ................ ... 58
Power Window Serial Link Check Rear LH or RH ... 59
Rear Power Vent Window Switch Circuit Check .. ... 60
Rear Power Vent Window Motor LH Circuit Check ... 61
Rear Power Vent Window Motor RH Circuit Check ... 61
Rear Power Vent Window Relay (OPEN) Check . ... 62
Rear Power Vent Window Relay (CLOSE) Check ... 63
FRONT DOOR GLASS AND REGULATOR .......... ... 65
Removal and Installation ..................................... ... 65
FRONT DOOR GLASS .................................... ... 65
FRONT DOOR GLASS REGULATOR ............. ... 66
SETTING AFTER INSTALLATION ................... ... 66
REAR DOOR GLASS AND REGULATOR ............ ... 68
Removal and Installation ..................................... ... 68
REAR DOOR GLASS ....................................... ... 68
REAR DOOR GLASS REGULATOR ................ ... 69
SETTING AFTER INSTALLATION ................... ... 70
SIDE WINDOW GLASS ............................................ 71 Removal and Installation ..................................... ... 71
REMOVAL ........................................................ ... 71
INSTALLATION ................................................. ... 71
INSIDE MIRROR ....................................................... 72 Wiring Diagram — I/MIRR — .............................. ... 72
Removal and Installation ..................................... ... 73
INSIDE MIRROR .............................................. ... 73
REAR WINDOW DEFOGGER ............................... ... 74
Component Parts and Harness Connector Location ... 74
System Description .............................................. ... 75
CAN Communication System Description ........... ... 75Schematic ............................................................
... 76
Wiring Diagram — DEF — ................................... ... 77
Terminal and Reference Value for BCM ............... ... 80
Terminal and Reference Value for IPDM E/R ....... ... 80
Work Flow ............................................................ ... 80
CONSULT-II Function (BCM) ............................... ... 81
CONSULT-II BASIC OPERATION PROCEDURE ... 81
DATA MONITOR ............................................... ... 82
ACTIVE TEST ................................................... ... 82
Trouble Diagnoses Symptom Chart ..................... ... 82
BCM Power Supply and Ground Circuit Check ... ... 84
Rear Window Defogger Switch Circuit Check ...... ... 85
Rear Window Defogger Circuit Check ................. ... 86
Door Mirror Defogger Power Supply Circuit Check ... 87
Door Mirror LH (Door Mirror Defogger) Circuit Check ... 89
Door Mirror RH (Door Mirror Defogger) Circuit
Check ................................................................... ... 90
Rear Window Defogger Signal Check ................. ... 90
Filament Check .................................................... ... 91
Filament Repair .................................................... ... 92
REPAIR EQUIPMENT ...................................... ... 92
REPAIRING PROCEDURE .............................. ... 92
DOOR MIRROR ...................................................... ... 93
Wiring Diagram — MIRROR — ........................... ... 93
Door Mirror Assembly .......................................... ... 94
REMOVAL ......................................................... ... 94
INSTALLATION ................................................. ... 94
Door Mirror Glass ................................................. ... 94
REMOVAL ......................................................... ... 94
INSTALLATION ................................................. ... 95

PRECAUTIONSGW-3
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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EIS004TI
The Supplemental Restraint System such as “AIR 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Handling for Adhesive and PrimerEIS004TJ

Do not use an adhesive which is past its usable date. Shelf life of this product is limited to six months after
the date of manufacture. Carefully adhere to the expiration or manufacture date printed on the box.

Keep primers and adhesive in a cool, dry place. Ideally, they should be stored in a refrigerator.

Open the seal of the primer and adhesive just before application. Discard the remainder.

Before application, be sure to shake the primer container to stir the contents. If any floating material is
found, do not use it.

If any primer or adhesive contacts the skin, wipe it off with gasoline or equivalent and wash the skin with
soap.

When using primer and adhesive, always observe the precautions in the instruction manual.

GW-4
PREPARATION
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PREPARATIONPFP:00002
Special Service ToolEIS004TL
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolEIS004TM
Tool number
(Kent-Moore No.)
Tool nameDescription
—
(J-39570)
Chassis ear Locating the noise
—
(J-43980)
NISSAN Squeak and Rat-
tle Kit Repairing the cause of noise
SIIA0993E
SIIA0994E
(Kent-Moore No.)
Tool name
Description
(J-39565)
Engine ear Locating the noise
( — )
Suction Lifter Holding door glass
SIIA0995E
LIIA1991E

SQUEAK AND RATTLE TROUBLE DIAGNOSESGW-5
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Work FlowEIS004TN
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document the facts and conditions when the noise occurs and any
customer's comments; refer to GW-9, "
Diagnostic Worksheet" . This information is necessary to duplicate the
conditions that exist when the noise occurs.

The customer may not be able to provide a detailed description or the location of the noise. Attempt to
obtain all the facts and conditions that exist when the noise occurs (or does not occur).

If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer
is concerned about. This can be accomplished by test driving the vehicle with the customer.

After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.

Squeak —(Like tennis shoes on a clean floor)
Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard sur-
faces = higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping.

Creak —(Like walking on an old wooden floor)
Creak characteristics include firm contact/slow movement/twisting with a rotational movement/pitch
dependent on materials/often brought on by activity.

Rattle —(Like shaking a baby rattle)
Rattle characteristics include the fast repeated contact/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.

Knock —(Like a knock on a door)
Knock characteristics include hollow sounding/sometimes repeating/often brought on by driver action.

Tick —(Like a clock second hand)
Tick characteristics include gentle contacting of light materials/loose components/can be caused by driver
action or road conditions.

Thump —(Heavy, muffled knock noise)
Thump characteristics include softer knock/dead sound often brought on by activity.

Buzz —(Like a bumble bee)
Buzz characteristics include high frequency rattle/firm contact.

Often the degree of acceptable noise level will vary depending upon the person. A noise that you may
judge as acceptable may be very irritating to the customer.

Weather conditions, especially humidity and temperature, may have a great effect on noise level.
SBT842