2004 INFINITI QX56 Factory Service Manual

hood open air suspension lane assist lumbar support diagram tires

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INFINITI QX56 2004 Factory Service Manual EC-650Revision: August 2007
SERVICE DATA AND SPECIFICATIONS (SDS)
2004 QX56
InjectorUBS00HEK
Fuel PumpUBS00HEL
Resistance [at 10 - 60°C (50 - 140°F)] 11.1 - 14.5Ω
Resistance [at 25°C (77°F)] 0.2

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INFINITI QX56 2004 Factory Service Manual EI-1
EXTERIOR & INTERIOR
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CONTENTS
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Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Service Notice

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EXTERIOR & INTERIOR
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CONTENTS
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SECTION EI
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Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Service Notice .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4
SQUEAK AND RATTLE TROUBLE DIAGNOSIS ...... 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/HEADLINING ..................................... 8
OVERHEAD CONSOLE (FRONT AND REAR) ..... 8
SEATS ................................................................... 8
UNDERHOOD ....................................................... 8
Diagnostic Worksheet .............................................. 9
CLIP AND FASTENER ..............................................11
Description ..............................................................11
FRONT BUMPER ..................................................... 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
REAR BUMPER ....................................................... 15
Removal and Installation ........................................ 15
FRONT GRILLE ........................................................ 17
Removal and Installation ........................................ 17
COWL TOP ............................................................... 18
Removal and Installation ........................................ 18FRONT FENDER ...................................................... 20
Removal and Installation ........................................ 20
OVER FENDER ......................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSTALLATION ................................................... 21
FENDER PROTECTOR ............................................ 23
Removal and Installation ........................................ 23
FRONT ................................................................ 23
LICENSE LAMP FINISHER ...................................... 24
Removal and Installation ........................................ 24
RUNNING BOARDS ................................................. 25
Removal and Installation ........................................ 25
REAR SPOILER ........................................................ 26
Removal and Installation ........................................ 26
ROOF RACK ............................................................. 27
Removal and Installation ........................................ 27
DOOR OUTSIDE MOLDING ..................................... 28
Removal and Installation ........................................ 28
FRONT DOOR OUTSIDE MOLDING .................. 28
SIDE GUARD MOLDING .......................................... 29
Removal and Installation ........................................ 29
REMOVAL ........................................................... 29
INSTALLATION ................................................... 29
DOOR FINISHER ...................................................... 31
Removal and Installation ........................................ 31
FRONT DOOR .................................................... 31
REAR DOOR ....................................................... 32
BODY SIDE TRIM ..................................................... 34
Removal and Installation ........................................ 34
LOWER DASH SIDE FINISHER ......................... 34
CENTER PILLAR LOWER FINISHER ................ 35
CENTER PILLAR UPPER FINISHER ................. 35
FRONT PILLAR FINISHER ................................. 35
KICKING PLATES ............................................... 35
MUDGUARD FINISHERS ................................... 35
DOOR PARTING SEALS .................................... 35
FLOOR TRIM ............................................................ 36
Removal and Installation ........................................ 36

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INFINITI QX56 2004 Factory Service Manual EI-2Revision: August 20072004 QX56 HEADLINING ............................................................ 37
Removal and Installation ........................................ 37
LUGGAGE FLOOR TRIM

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INFINITI QX56 2004 Factory Service Manual PRECAUTIONS
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Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
Service NoticeEIS002X1
When removing or installing various parts, place a cloth or padding on the vehicl

PRECAUTIONS
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Revision: August 20072004 QX56
PRECAUTIONSPFP:00001
Service NoticeEIS002X1
When removing or installing various parts, place a cloth or padding on the vehicle body to prevent
scratches.
Handle trim, molding, instruments, grille, etc. carefully during removing or installing. Be careful not to soil
or damage them.
Apply sealing compound where necessary when installing parts.
When applying sealing compound, be careful that the sealing compound does not protrude from parts.
When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust pre-
vention measures.
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EIS002X2
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.
WA RN ING:
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.

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INFINITI QX56 2004 Factory Service Manual EI-4
PREPARATION
Revision: August 20072004 QX56
PREPARATIONPFP:00002
Special Service ToolsEIS002X3
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here

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INFINITI QX56 2004 Factory Service Manual SQUEAK AND RATTLE TROUBLE DIAGNOSIS
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Work FlowEIS0063A
CUSTOMER INTERVIEW
Interview the custom

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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 EI-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 bumblebee)
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.
SBT 8 42

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INFINITI QX56 2004 Factory Service Manual EI-6
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any addi

EI-6
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: August 20072004 QX56
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1. Close a door.
2. Tap or push/pull around the area where the noise appears to be coming from.
3. Rev the engine.
4. Use a floor jack to recreate vehicle “twist”.
5. At idle, apply engine load (electrical load, drive position on A/T model).
6. Raise the vehicle on a hoist and hit a tire with a rubber hammer.
Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.
If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pinpoint the source of the noise, use a listening tool
(Chassis Ear: J-39570, Engine Ear: J-39565 and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:
Removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fasteners
can be broken or lost during the repair, resulting in the creation of new noise.
Tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be elimi-
nated only temporarily.
Feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing
the noise.
Placing a piece of paper between components that you suspect are causing the noise.
Looking for loose components and contact marks.
Refer to EI-7, "
Generic Squeak and Rattle Troubleshooting" .
REPAIR THE CAUSE
If the cause is a loose component, tighten the component securely.
If the cause is insufficient clearance between components:
–Separate components by repositioning or loosening and retightening the component, if possible.
–Insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A NISSAN Squeak and Rattle Kit (J-43980) is available through your authorized NISSAN
Parts Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
Always check with the Parts Department for the latest parts information.
The following materials are contained in the NISSAN Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100 x 135 mm (3.94 x 5.31 in)/76884-71L01: 60 x 85 mm (2.36 x 3.35 in)/76884-71L02: 15 x 25
mm (0.59 x 0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.

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INFINITI QX56 2004 Factory Service Manual SQUEAK AND RATTLE TROUBLE DIAGNOSIS
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Revision: August 20072004 QX56
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SQUEAK AND RATTLE TROUBLE DIAGNOSIS
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INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 x 50 mm (1.18 x 1.97 in)
FELT CLOTH TAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15 x 25 mm (0.59 x 0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll
The following materials, not found in the kit, can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingEIS0063B
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops

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