tires INFINITI QX56 2006 Factory Service Manual

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLEATAutomatic Transmission
DDRIVELINE/AXLETFTransfer
PRPropeller Shaft
FFDFront Final Drive
RFDRear Final Drive
FAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System (SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mirrors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
APAdjustable Pedal
JAIR CONDITIONERATCAutomatic Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio Visual, Navigation & Telephone System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Elements
LMAINTENANCEMAMaintenance
MINDEXIDXAlphabetical Index
Edition: July 2005
Revision: November 2009
Publication No. SM6E-1J60U2
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© 2009 NISSAN NORTH AMERICA, INC.
All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission
of Nissan North America, Inc.
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TROUBLE DIAGNOSISAT-51
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Inspections Before Trouble DiagnosisECS00CEE
A/T FLUID CHECK
Fluid Leakage and Fluid Level Check

Inspect for fluid leakage and check the fluid level. Refer to AT- 1 2 , "Changing Automatic Transmission
Fluid (ATF)" .
Fluid Condition Check
Inspect the fluid condition.
STALL TEST
Stall Test Procedure
1. Inspect the amount of engine oil. Replenish the engine oil if necessary.
2. Drive for about 10 minutes to warm up the vehicle so that the A/
T fluid temperature is 50 to 80 °C (122 to 176 °F). Inspect the
amount of ATF. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
4. Engine start, apply foot brake, and place selector lever in “D”
position.
5. While holding down the foot brake, gradually press down the accelerator pedal.
6. Quickly read off the stall speed, then quickly remove your foot from the accelerator pedal.
CAUTION:
Do not hold down the accelerator pedal for more than 5 sec-
onds during this test.
7. Move the selector lever to the “N” position.
Fluid condition Conceivable Cause Required Operation
Varnished (viscous
varnish state) Clutch, brake
scorchedReplace the ATF and check the A/T
main unit and the vehicle for mal-
functions (wire harnesses, cooler
pipes, etc.)
Milky white or
cloudy Water in the fluidReplace the ATF and check for
places where water is getting in.
Large amount of
metal powder mixed
in Unusual wear of
sliding parts within
A/T
Replace the ATF and check for
improper operation of the A/T.
SAT638A
SAT647B
SCIA1224E
SAT514G

TROUBLE DIAGNOSISAT-53
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3. After warming up remove the oil pressure detection plug and
install the oil pressure gauge [ST2505S001(J-34301-C)].
CAUTION:
When using the oil pressure gauge, be sure to use the O-
ring attached to the oil pressure detection plug.
4. Securely engage the parking brake so that the tires do not turn.
5. Start the engine, then measure the line pressure at both idle and the stall speed.
CAUTION:

Keep the brake pedal pressed all the way down during
measurement.

When measuring the line pressure at the stall speed,
refer to AT- 5 1 , "
STALL TEST" .
6. After the measurements are complete, install the oil pressure detection plug and tighten to the regulation torque below.
CAUTION:
Do not reuse the O-ring.
Line Pressure
SCIA5309E
SCIA1224E
:7.3 N·m (0.74 kg-m, 65 in-lb)SAT493G
Engine speed Line pressure [kPa (kg/cm2 , psi)]
R position D position
At idle speed 425 - 465 (4.3 - 4.7, 62 - 67) 379 - 428 (3.9 - 4.4, 55 - 62)
At stall speed 1,605 - 1,950 (16.4 - 19.9, 233 - 283) 1,310 - 1,500 (13.4 - 15.3, 190 - 218)

AV-84
NAVIGATION SYSTEM
Revision: November 20092006 QX56
NAVIGATION SYSTEMPFP:25915
System DescriptionEKS00BJD
NOTE:
Refer to NAVI System Owner's Manual for system operation.
The navigation system periodically calculates the vehicle's current
position according to the following three signals: Travel distance of
the vehicle as determined by the vehicle speed sensor, turning angle
of the vehicle as determined by the gyroscope (angular velocity sen-
sor), and the direction of vehicle travel as determined by the GPS
antenna (GPS information).
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data read from the map DVD-
ROM, which is stored in the DVD-ROM drive (map-matching), and
indicated on the screen with a current-location mark.
By comparing the vehicle position detection results found by the
GPS and by map-matching, more accurate vehicle position data can
be used.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.
TRAVEL DISTANCE
Travel distance calculations are based on the vehicle speed sensor input signal. Therefore, the calculation
may become incorrect as the tires wear down. To prevent this, an automatic distance fine adjustment function
has been adopted. Adjustments can be made in extreme cases (such as driving with tire chain fitted on tires).
Refer to AV- 11 7 , "
Confirmation/Adjustment Mode" .
TRAVEL DIRECTION
Change in the travel direction of the vehicle is calculated by a gyroscope (angular velocity sensor) and a GPS
antenna (GPS information). As the gyroscope and GPS antenna have both merit and demerit, input signals
from them are prioritized in each situation. However, this order of priority may change in accordance with more
detailed travel conditions so that the travel direction is detected more accurately.
WKIA1371E
SEL684V
Type Advantage Disadvantage
Gyroscope (angular velocity sensor)

Can detect the vehicle's turning angle
quite accurately.
Direction errors may accumulate when the
vehicle is driven for long distances without
stopping.
GPS antenna (GPS information)

Can detect the vehicle's travel direction
(North/South/East/West).
Correct direction cannot be detected when
the vehicle speed is low.

NAVIGATION SYSTEMAV-123
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Angle adjustment

Adjusts turning angle output detected by the gyroscope.
Speed Calibration

During normal driving, distance error caused by tire wear and
tire pressure change is automatically adjusted for by the auto-
matic distance correction function. This function, on the other
hand, is for immediate adjustment, in cases such as driving with
tire chain fitted on tires.
WKIA4314E
WKIA4315E

NAVIGATION SYSTEMAV-163
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PlaceIn a parking lot
When driving in a parking lot, or other loca-
tion where there are no roads on the map,
matching may place the vehicle mark on a
nearby road. When the vehicle returns to
the road, the vehicle mark may have devi-
ated from the correct location.
When driving in circle or turning the steer-
ing wheel repeatedly, direction errors accu-
mulate, and the vehicle mark may deviate
from the correct location.
If after travelling about 10 km (6
miles) the correct location has
not been restored, perform
location correction and, if nec-
essary, direction correction.
Turntable
When the ignition switch is OFF, the navi-
gation system cannot get the signal from
the gyroscope (angular speed sensor).
Therefore, the displayed direction may be
wrong and the correct road may not be
easily returned to after rotating the vehicle
on a turntable with the ignition OFF.
Slippery roads On snow, wet roads, gravel, or other roads
where tires may slip easily, accumulated
mileage errors may cause the vehicle mark
to deviate from the correct road.
Slopes When parking in sloped garages, when
travelling on banked roads, or in other
cases where the vehicle turns when tilted,
an error in the turning angle will occur, and
the vehicle mark may deviate from the
road.
Map data Road not displayed on the map screen
When driving on new roads or other roads
not displayed on the map screen, map
matching does not function correctly and
matches the location to a nearby road.
When the vehicle returns to a road which is
on the map, the vehicle mark may deviate
from the correct road.
Different road pattern
(Changed due to repair) If the road pattern stored in the map data
and the actual road pattern are different,
map matching does not function correctly
and matches the location to a nearby road.
The vehicle mark may deviate from the
correct road.
Vehicle Use of tire chains When tire chains are used, the mileage is
not correctly detected, and the vehicle
mark may deviate from the correct road.Drive the vehicle for a while. If
the distance still deviates,
adjust it by using the distance
adjustment function. (If the tire
chain is removed, recover the
original value.)
Cause (condition)
–: While driving ooo: Display Driving conditionRemarks (correction, etc.)
SEL709V
SEL710V
SEL699V
ELK0201D

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGBR-5
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEFS004VZ
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
BR-21
,
BR-27
BR-21
, BR-27
BR-21
, BR-27
BR-25
, BR-30
BR-25
, BR-30
BR-25
, BR-30
BR-25
, BR-30
BR-25
, BR-30
BR-25
, BR-31
BR-25
, BR-31

PR-3, "
NVH Troubleshooting Chart
"
FFD-6, "
NVH Troubleshooting Chart
", RFD-7, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
", RAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
", RSU-5, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and
SUSPECTED PARTS
Pads - damaged
Pads - uneven wear
Shims damaged
Rotor imbalance
Rotor damage
Rotor runout
Rotor deformation
Rotor deflection
Rotor rust
Rotor thickness variation
PROPELLER SHAFT
DIFFERENTIAL
DRIVESHAFT
SUSPENSION
TIRES AND ROAD WHEEL
STEERING
Symptom Noise
××× ××××××
Shake ××××××
Shimmy, Shudder ××××××× ××××

BR-22
FRONT DISC BRAKE
Revision: November 20092006 QX56
WARNING:
Clean dust on cylinder body and brake pads with a vacuum dust collector to minimize the hazard of
airborne particles or other materials.
CAUTION:

While removing cylinder body never depress brake pedal because piston will pop out.

It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of cylinder body. In this case, hang cylinder body with a wire so as not to stretch
brake hose.

Do not damage piston boot.

Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or if a soft
pedal occurs at very low mileage. Refer to BR-25, "
BRAKE BURNISHING PROCEDURE" .
Removal and Installation of Brake PadEFS004WI
REMOVAL
1. Remove tires from vehicle using power tool.
2. Remove lower sliding pin bolt.
3. Suspend cylinder body with a wire and remove pads, shims and pad retainers from torque member.
INSTALLATION
1. Push pistons in so that pad is firmly installed and mount cylinder body to torque member.
CAUTION:
By pushing in piston, brake fluid returns to master cylinder reservoir tank. Watch the level of the
surface of reservoir tank.
NOTE:
Using a disc brake piston tool (commercial service tool), makes it easier to push in piston.
2. Attach pad retainers, pads and shims to torque member.

Apply Molykote M-77 grease to pad retainer where brake pad
contacts and between pad and shim.
CAUTION:

When attaching pad retainer, attach it firmly so that it is
seated fully in the torque member as shown.

Do not get grease on the brake rotor friction surface.
3. Install lower sliding pin bolt and tighten it to the specified torque. Refer to BR-21, "
Components" .
4. Check brake for drag.
5. Install tires to the vehicle. Refer to WT-7, "
Rotation" .
Removal and Installation of Brake Caliper and Disc RotorEFS004WJ
REMOVAL
1. Remove tires from vehicle using power tool.
2. Drain brake fluid as necessary. Refer to BR-10, "
Drain and Refill" .
NOTE:
Do not remove union bolt unless removing cylinder body from vehicle.
3. Remove torque member bolts.
NOTE:
Position cylinder body aside using suitable wire, as necessary.
NOTE:
When servicing cylinder body, remove sliding pin bolts and torque member from cylinder body.
4. Remove disc rotor.
INSTALLATION
CAUTION:

Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" .
PFIA0273E

FRONT DISC BRAKEBR-23
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Do not reuse drained brake fluid.
1. Install disc rotor.
2. Install sliding pin bolts and torque member to caliper, if removed. Refer to BR-21, "
Components" .
3. Install caliper assembly to the vehicle, then tighten the torque member bolts to the specified torque. Refer to BR-21, "
Compo-
nents" .
CAUTION:

When attaching caliper assembly to the vehicle, wipe any
oil off knuckle spindle, washers and caliper assembly
attachment surfaces.

Do not reuse caliper torque member bolts.
4. Install brake hose to cylinder body, then tighten union bolt to specification, as necessary. Refer to BR-21, "
Components" .
CAUTION:

Do not reuse copper washer.

Install brake hose to caliper assembly together with
union bolt and washers.
5. Refill with new brake fluid and bleed air. Refer to BR-11, "
Bleeding Brake System" .
6. Install tires to the vehicle. Refer to WT-7, "
Rotation" .
Disassembly and Assembly of Brake CaliperEFS004WK
DISASSEMBLY
1. Remove sliding pin bolt, and then remove the pad, shim, shim cover, and pad retainer from the torque member.
2. Remove sliding pins and sliding pin boots from torque member.
3. Place a wooden block as shown, and blow air from union bolt mounting hole to remove pistons and piston boots.
CAUTION:
Do not get your fingers caught in piston.
LFIA0209E
LFIA0214E
MAA0272D

BR-28
REAR DISC BRAKE
Revision: November 20092006 QX56
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of airborne
particles or other materials.
CAUTION:

While removing cylinder body, never depress brake pedal because piston will pop out.

It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of cylinder body. In this case, hang cylinder body with a wire so as not to stretch
brake hose.

Do not damage piston boot.

Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or it a soft
pedal occurs at very low mileage. Refer to BR-31, "
BRAKE BURNISHING PROCEDURE" .
Removal and Installation of Brake PadEFS004WN
REMOVAL
1. Remove tires from vehicle with power tool.
2. Remove the top bolt from the cylinder body.
3. Swing cylinder body open, and remove pads.
INSTALLATION
1. Push piston in so that pad is firmly attached and install cylinder body to torque member.
NOTE:
Using a disc brake piston tool (commercial service tool), makes it easier to push in the piston.
CAUTION:
By pushing in piston, brake fluid returns to master cylinder reservoir tank. Watch the level of the
surface of reservoir tank.
2. Apply Molykote M-77 grease to knuckle slide where brake pad contacts.
CAUTION:
Do not get grease on the brake rotor friction surface.
3. Install pads to cylinder body.
4. Install cylinder body top bolt and tighten to specification.
5. Check brake for drag.
6. Install tires to the vehicle. Refer to WT-7, "
Rotation" .
Removal and Installation of Brake Caliper and Disc RotorEFS004WO
REMOVAL
1. Remove tires from vehicle with power tool.
2. Drain brake fluid as necessary. Refer to BR-10, "
Drain and Refill" .
NOTE:
Do not remove union bolt unless removing cylinder body from vehicle.
3. Remove mounting bolts and cylinder body. NOTE:
Position cylinder body aside using suitable wire, as necessary.
4. Remove disc rotor.
INSTALLATION
CAUTION:

Refill with new brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" .

Do not reuse drained brake fluid.
1. Install disc rotor.
LFIA0211E