INFINITI QX56 2008 Factory Service Manual

PRECAUTIONSRF-47
< PRECAUTION >
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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.
PrecautionINFOID:0000000001731948
• Disconnect both battery cables in advance.
• Never tamper with or force air bag lid open, as this may adversely affect air bag performance.
• Be careful not to scratch pad and other parts.
• When removing or disassembling any part, be careful not to damage or deform it. Protect parts which may
get in the way with cloth.
• When removing parts with a screwdriver or other tool , protect parts by wrapping them with vinyl or tape.
• Keep removed parts protected with cloth.
• If a clip is deformed or damaged, replace it.
• If an unreusable part is removed, replace it with a new one.
• Tighten bolts and nuts firmly to the specified torque.
• After re-assembly has been completed, make sure each part functions correctly.
• Remove stains in the following way.
Water-soluble stains:
Dip a soft cloth in warm water, and then squeeze it tight ly. After wiping the stain, wipe with a soft dry cloth.
Oil stain:
Dissolve a synthetic detergent in warm water (density of 2 to 3% or less), dip the cloth, then clean off the stain
with the cloth. Next, dip the cloth in fresh water and squeeze it tightly. Then clean off the detergent completely.
Then wipe the area with a soft dry cloth.
• Do not use any organic solvent, such as thinner or benzine.
Revision: March 2010 2008 QX56

RF-48
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000001536770
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000001536771
Tool number
(Kent-Moore No.)
Tool name Description
—
(J-39570)
Chassis ear Locating the noise
—
(J-43980)
NISSAN Squeak and
Rattle Kit Repairing the cause of noise
SIIA0993E
SIIA0994E
(Kent-Moore No.)
Tool name
Description
(J-39565)
Engine ear Locating the noise
SIIA0995E
Revision: March 2010
2008 QX56

SUNROOF SYSTEMRF-49
< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
SUNROOF SYSTEM
InspectionINFOID:0000000001536767
WIND DEFLECTOR
1. Open glass lid assembly fully.
2. Visually check for proper installation, damaged/deteriorated components, or foreign objects within mecha- nism. Correct as required for smooth operation.
3. Check for grease at the wind deflector arm (1) and pivot areas. If necessary, apply a sufficient amount of grease for non-binding
operation.
⇐:Vehicle front
4. Check that the wind deflector (1) moves freely within the sunroof unit assembly while manually pressing down and releasing. If a
malfunction is detected, remove the sunroof unit assembly and
visually inspect. If damage is found, replace either wind deflec-
tor (1) or sunroof unit assembly as required.
⇐:Vehicle front
WEATHERSTRIP
Visually check weatherstrip for any damage, deterioration, or flattening.
• In the case of leakage around glass lid, close glass lid and pour water around it to find the damaged or
gaped portion, remove glass lid assembly.
• If any damage is found, replace glass lid assembly.
CAUTION:
Do not remove the weatherstrip.
LINK AND WIRE ASSEMBLY
NOTE:
Before replacing any suspect part, carefully ensure it is the source of the noise being experienced.
1. Visually check to determine if a sufficient amount of petroleum jelly has been applied to the wire or rail
groove. If not, add petroleum jelly as required.
2. Check wire for any damage or deterioration. If any damage is found, remove rear guide, then replace
wire.
DRAIN HOSES
LIIA2336E
WIIA0849E
Revision: March 2010 2008 QX56

RF-50
< ON-VEHICLE REPAIR >
SUNROOF SYSTEM
Removal
1. Remove the headlining. Refer to INT-17, "Removal and Installation".
2. Visually check the drain hoses for proper connections, damage or deterioration.
3. Remove each drain hose and check visually for damage, cracks or deterioration. • Pour water through the drain hose to check for damage.
If any damage is found, replace the drain hose.
Installation
Installation is in the reverse order of removal.
1. Rear drain hoses 2. Front drain hoses
WIIA0853E
LIIA0272E
Revision: March 2010 2008 QX56

SUNROOF SYSTEMRF-51
< ON-VEHICLE REPAIR >
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GAP ADJUSTMENT
NOTE:
If any gap or height difference between glass lid and roof panel is found, check glass lid fit and adjust as fol-
lows:
1. Open sunshade assembly.
2. Loosen glass lid securing screws (two each on left and right sides), then tilt glass lid down.
3. Manually adjust glass lid from outside of v ehicle so it resembles "A - A" as shown.
4. After adjusting glass lid tilt glass lid up and tighten screws.
5. Tilt glass lid up and down several times to check that it moves smoothly.
HEIGHT DIFFERE NCE ADJUSTMENT
If an excessive height difference between glass lid assemb ly and roof panel is found, adjust in the following
manner:
1. Remove headlining. Refer to INT-17, "
Removal and Installation".
2. Loosen sunroof frame assembly nuts and sunroof bracket bolts.
3. Add shims until gap is within specification "A-A". NOTE:
Temporarily snug nuts and bolts to prevent movement between each adjustment.
4. Tilt glass lid assembly up and down several times to check that it moves and seals properly.
5. Tighten sunroof frame assembly nuts and sunroof bracket bolts. NOTE:
First tighten left front then right rear sunroof frame assembly to prevent uneven torque while tightening
remaining sunroof bracket bolts.
6. Install headlining. Refer to INT-17, "
Removal and Installation".
WIIA0304E
Revision: March 2010 2008 QX56

RF-52
< ON-VEHICLE REPAIR >
SUNROOF SYSTEM
Exploded View
INFOID:0000000001536768
1. Glass lid assembly 2. Wind deflector3. Rear drain hoses
4. Shade stoppers 5. Sunroof bracket 6. Sunshade assembly
7. Front drain hoses 8. Sunroof motor assembly9. Sunroof frame assembly
10. Overhead console bracket 11. Side cover LH 12. Side cover RH
WIIA0657E
Revision: March 2010 2008 QX56

SUNROOF SYSTEMRF-53
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CAUTION:
• Before removal, fully close the glass lid assembly. Then, after removal, do not move the motor
assembly.
• After installing or adjusting the sunroof and glass lid, check gap alignment and sunroof operation to
prevent malfunction.
• Handle glass lid with care so not to cause damage.
Removal and InstallationINFOID:0000000001536769
CAUTION:
• Always work with a helper.
• When taking sunroof unit out, use shop cloths to protect the seats and trim from damage.
• After installing the sunroof unit or glass lid, be sure to check gap adjustment to prevent any mal-
function.
SUNROOF UNIT
NOTE:
• For easier installation, mark each point before removal.
Removal
1. Remove headlining. Refer to INT-17, "Removal and Installation".
2. Remove the sunroof glass lid. Refer to RF-53, "
Removal and Installation".
3. Remove overhead console bracket.
4. Disconnect the drain hoses.
5. Remove front sunroof bolts.
6. Remove rear sunroof bracket bolts.
7. Remove the side bolts and the sunroof unit.
Installation
1. Position the sunroof frame assembly and install the side bolts.
2. Install the rear brackets.
3. Install the front sunroof frame assembly bolts.
4. Connect drain hoses.
5. Install the overhead console bracket.
6. Install the sunroof glass lid. Refer to RF-52, "
Exploded View".
7. Install headlining. Refer to INT-17, "
Removal and Installation".
8. Perform initialization procedure. Refer to RF-5, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL
UNIT : Special Repair Requirement".
GLASS LID
Removal
1. Open sunshade.
2. Ensure glass lid is closed.
3. Remove side cover LH and RH.
4. Remove the screws securing glass lid to the sunroof frame assembly.
5. Remove the glass lid assembly.
Installation
WIIA0252E
Revision: March 2010 2008 QX56

RF-54
< ON-VEHICLE REPAIR >
SUNROOF SYSTEM
1. Position glass lid to sunroof assembly.
2. Install the glass lid assembly screws. (First tighten left front bolt, then tighten right rear bolt on glass lid to
prevent lid from moving while tightening other bolts.)
3. Adjust the glass lid assembly. Refer to RF-49, "
Inspection".
4. Install side cover LH and RH.
WIND DEFLECTOR
Removal
1. Open the sunroof.
2. Remove screws from the left, center, and right side wind deflec- tor holders.
3. Remove the wind deflector from the sunroof frame assembly.
Installation
Installation is in the reverse order of removal.
SUNSHADE
Removal
1. Remove the sunroof frame assembly. Refer to RF-52, "Exploded View".
2. Remove the sunshade stoppers (two points) from the rear end of the sunroof frame assembly.
3. Remove the sunshade assembly from the rear end of the sun- roof frame assembly.
Installation
Installation is in the reverse order of removal.
SUNROOF MOTOR
Removal
CAUTION:
• When removing the sunroof motor, be sure to place the link and wire assembly in the symmetrical
and fully closed position.
• Never run the removed motor as a single unit.
1. Position the sunroof assembly in the fully closed position.
2. Disconnect the negative battery terminal.
3. Remove the roof console assembly. Refer to INT-17, "
Removal and Installation".
LIIA1099E
SBT251A
Revision: March 2010 2008 QX56

SUNROOF SYSTEMRF-55
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4. Disconnect the sunroof motor harness connector (2). ⇐: Vehicle front
5. Remove the sunroof motor screws (3), then remove the sunroof motor (1).
Installation
CAUTION:
Before installing the sunroof motor assembly, be sure to place the link and wire assembly in the sym-
metrical and fully closed position.
•⇐ :Vehicle front
1. Move the sunroof motor (1) laterally little by little so that the gear is completely engaged into the wire on the sunroof unit and the
installation surface becomes parallel. Then, secure the motor
with screws (3).
2. Connect the wire harness connector (2) to the sunroof motor (1).
3. Install the roof console assembly. Refer to INT-17, "
Removal
and Installation".
4. Reset the sunroof motor memory. Refer to RF-5, "
ADDITIONAL
SERVICE WHEN REPLACING CONTROL UNIT : Special
Repair Requirement".
WIIA0772E
WIIA0772E
Revision: March 2010 2008 QX56

RSU-1
SUSPENSION
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SECTION RSU
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REAR SUSPENSION
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution for Rear Suspension ......................... ......3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Commercial Service Tool .................................... ......4
SYMPTOM DIAGNOSIS ...............................5
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
5
NVH Troubleshooting Chart ................................ ......5
ON-VEHICLE MAINTENANCE .....................6
REAR SUSPENSION ASSEMBLY ................ .....6
On-Vehicle Inspection and Service ..................... ......6
Wheel Alignment Inspection ......................................6
ON-VEHICLE REPAIR ..................................9
REAR SUSPENSION ASSEMBLY ................ .....9
Component .......................................................... ......9
REMOVAL AND INSTALLATION ...............11
REAR SUSPENSION MEMBER .................... ....11
Removal and Installation .........................................11
SHOCK ABSORBER ........................................15
Removal and Installation ..................................... ....15
SUSPENSION ARM ..........................................16
Removal and Installation .........................................16
FRONT LOWER LINK .......................................18
Removal and Installation .........................................18
REAR LOWER LINK & COIL SPRING .............20
Removal and Installation .........................................20
STABILIZER BAR .............................................22
Removal and Installation .........................................22
REAR LOAD LEVELING AIR SUSPENSION
COMPRESSOR ASSEMBLY ............................
23
Removal and Installation .........................................23
CONTROL UNIT ................................................25
Removal and Installation .........................................25
Initialization Procedure ............................................25
HEIGHT SENSOR .............................................26
Removal and Installation .........................................26
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
28
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
28
Wheel Alignment ................................................. ....28
Ball Joint ..................................................................28
Wheelarch Height (Unladen*1) ................................29
Revision: March 2010 2008 QX56