2010 INFINITI QX56 tires

FSU-8
< ON-VEHICLE MAINTENANCE >
ON-VEHICLE SERVICE
• Always perform the following procedure on a flat surface.
• Make sure that no person is in front of the vehicle before pushing it.
1. Bounce the front of vehicle up and down to stabilize the vehicle height (posture).
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of the tread (rear side) of both front tires at the same height as hub center as shown. These marks are
measuring points.
4. Measure the distance (A) on the rear side of the front tires as shown.
5. Push the vehicle slowly ahead to rotate the wheels 180 °
degrees (1/2 a turn).
CAUTION:
If the wheels have rotated more than 180 ° degrees (1/2
turn), start this procedure again from the beginning. Never
push the vehicle backward.
6. Measure the distance (B) on the front side of the front tires at the
same marks as shown. Total toe-in is calculated as (A – B).
7. Adjust the toe-in by varying the length of the steering outer socket.
a. Loosen the outer tie-rod lock nuts.
b. Adjust the toe-in by screwing the outer tie-rods in or out.
c. Tighten the outer tie-rod lock nuts to specification.
FRONT WHEEL TURNING ANGLE
NOTE:
Check front wheel turning angle after the toe-in inspection.
1. Place front wheels on turning radius gauges in straight ahead position and rear wheels on stands so that vehicle can be level.
Check the maximum inner and outer wheel turning angles for LH
and RH road wheels.
2. Start engine and run at idle, turn steering wheel all the way right and left, measure the turning angle.
AFA050
Total toe-in : Refer to FSU-23, "Wheel Alignment (Un-
laden*1)" .
SFA234AC
Standard length (L) : Refer to ST-36, "Steering Outer
Socket and Inner Socket" .
Lock nut : Refer to FA X - 9 , "
Removal and In-
stallation" .
SGIA0167E
Wheel turning angle
(full turn) : Refer to
FSU-23, "Wheel
Alignment (Unladen*1)".
SFA439BA
Revision: April 20092010 QX56

GI-1
GENERAL INFORMATION
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CONTENTS
GENERAL INFORMATION
HOW TO USE THIS MANU AL ......................3
HOW TO USE THIS MANUAL ....................... .....3
Description .......................................................... ......3
Terms ........................................................................3
Units ..........................................................................3
Contents ....................................................................3
Relation between Illustrations and Descriptions .......4
Components ..............................................................4
HOW TO FOLLOW TROUBLE DIAGNOSES .....6
Description ................................................................6
How to Follow Test Groups in Trouble Diagnosis ......6
Key to Symbols Signifying Measurements or Pro-
cedures ............................................................... ......
7
HOW TO READ WIRING DIAGRAMS ................9
Connector symbols ............................................. ......9
Sample/wiring diagram -example- ...........................10
Description ..............................................................11
ABBREVIATIONS .......................................... ....13
Abbreviation List .................................................. ....13
TIGHTENING TORQUE OF STANDARD
BOLTS ................................................................
14
Tightening Torque Table .........................................14
RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS ............................................ ....
15
Recommended Chemical Products and Sealants ....15
TERMINOLOGY .................................................16
SAE J1930 Terminology List ............................... ....16
FEATURES OF NEW MODEL .....................20
IDENTIFICATION INFORMATION .....................20
Model Variation ................................................... ....20
Identification Number ..............................................21
Identification Plate ...................................................22
Dimensions .............................................................23
Wheels & Tires .................................................... ....23
PRECAUTION ..............................................24
PRECAUTIONS .................................................24
Description ........................................................... ....24
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
24
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ...................................
24
Procedures without Cowl Top Cover .......................25
General Precautions ................................................25
Three Way Catalyst .................................................27
Precaution for Fuel (Unleaded Premium Gasoline
Required) .................................................................
27
Multiport Fuel Injection System or Engine Control
System .....................................................................
27
Hoses ......................................................................27
Engine Oils ..............................................................28
Air Conditioning .......................................................29
LIFTING POINT .................................................30
Pantograph Jack ......................................................30
Garage Jack and Safety Stand ................................30
2-Pole Lift ................................................................30
TOW TRUCK TOWING .....................................32
Tow Truck Towing ...................................................32
Vehicle Recovery (Freeing a stuck vehicle) ............33
BASIC INSPECTION ...................................34
SERVICE INFORMATION FOR ELECTRICAL
INCIDENT ..........................................................
34
Work Flow ............................................................ ....34
Control Units and Electrical Parts ............................34
How to Check Terminal ...........................................35
Intermittent Incident ............................................. ....38
Circuit Inspection .....................................................41
CONSULT-III CHECKING SYSTEM .................46
Revision: April 20092010 QX56

IDENTIFICATION INFORMATIONGI-23
< FEATURES OF NEW MODEL >
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DimensionsINFOID:0000000005149586
Unit: mm (in)
Wheels & TiresINFOID:0000000005149587
* With Steel Wheel Drive type
2WD4WD
Overall length 5254 (206.9)5254 (206.9)
Overall width 2021 (79.6)2021 (79.6)
Overall height (with roof rack) 1948 (76.7)1968 (77.5)
Front tread width 1729 (68.1)1729 (68.1)
Rear tread width 1729 (68.1)1729 (68.1)
Wheelbase 3130 (123.2)3130 (123.2)
Minimum Running Ground Clearance (at front suspension) 211.2 (8.3)232 (9.1)
Drive Type Grade Road wheelTireSpare tire size *
All QX56 20x8JJ Chromium Aluminum Alloy
P275/60R20P275/60R20
20X8J Steel P275/60R20P275/60R20
Revision: April 20092010 QX56

MA-6
< ON-VEHICLE MAINTENANCE >
GENERAL MAINTENANCE
ON-VEHICLE MAINTENANCE
GENERAL MAINTENANCE
General MaintenanceINFOID:0000000005145933
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owner can perform these
checks and inspections or have thei r INFINITI dealers perform them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed fr om time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle,
etc.
Item Reference page
Tires Check the pressure with a gauge often and always prior to long distance trips.
Adjust the pressure in all tires, including the spare, to the pressure specified.
Check carefully for damage, cuts or excessive wear. WT-47, "
Inspection"
Wheel lug nuts
When checking the tires, make sure no nuts are missing, and check for any loose
nuts. Tighten if necessary. WT-49, "Rotation"
Windshield
Clean the windshield on a regular basis. Check the windshield at least every six
months for cracks or other damage. Repair as necessary. GW-11, "Removal and
Installation"
Tire rotation
Tires should be rotated every 12,000 km (7,500 miles). WT-49, "Rotation"
Tire Pressure Monitor-
ing System (TPMS)
transmitter componentsReplace the TPMS transmitter grommet seat, valve core and cap when the tires
are replaced due to wear or age.
WT-50, "Transmitter
(Pressure Sensor)"
Wheel alignment and
balanceIf the vehicle pulls to either side while driving on a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a need for wheel align-
ment. If the steering wheel or seat vibrates at normal highway speeds, wheel bal-
ancing may be needed. WT-48, "Balancing
Wheels", FSU-6, "Front
Wheel Alignment"
Windshield wiper
blades
Check for cracks or wear if they do not wipe properly.
—
Doors and engine
hood Check that all doors and the engine hood operate smoothly as well as the back
door. Also make sure that all latches lock securely. Lubricate if necessary. Make
sure that the secondary latch keeps the hood from opening when the primary
latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-38, "
LOCKS AND
HINGES : Lubricating
Locks, Hinges and Hood
Latches"
Lamps
Make sure that the head lamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check head
lamp aim. Clean the head lamps on a regular basis. EXL-145, "HEADLAMP :
Aiming Adjustment"
Item
Reference page
Warning lamps and
chimes Make sure that all warning lamps and chimes are operating properly.
WCS-4, "
WARNING
CHIME SYSTEM : Sys-
tem Description"
Windshield wiper and
washerCheck that the wipers and washer operate properly and that the wipers do not
streak.
—
Windshield defroster Check that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioner. —
Steering wheel Check that it has the specified play. Be sure to check for changes in the steering
condition, such as excessive play, hard steering or strange noises.
Free play: less than 35mm (1.38 in) ST-15, "
On-Vehicle In-
spection and Service"
Seats
Check seat position controls such as seat adjusters, seat back recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every po-
sition. Check that the head restraints move up and down smoothly and that the
locks (if equipped) hold securely in all latched positions. Check that the latches
lock securely for folding-down rear seat backs. —
Revision: April 20092010 QX56

MA-34
< ON-VEHICLE MAINTENANCE >
CHASSIS AND BODY MAINTENANCE
Wheel balance (Maximum allowable imbalance):
WHEELS : RotationINFOID:0000000005403160
NOTE:
Follow the maintenance schedule for tire rotation service intervals. Refer to MA-9, "
Schedule 1" .
1. Rotate the tires on each side from front to back as shown. Do not include the spare tire when rotating the tires.
CAUTION:
When installing wheel s, tighten them diagonally by dividing
the work two to three times in order to prevent the wheels
from developing any distortion.
2. Adjust the tire pressure to specification. Refer to WT-52, "
Tire" .
3. After the tire rotation, retighten the wheel nuts after the vehicle has been driven for 1,000 km (600 miles), and also after every
wheel and tire have been installed such as after repairing a flat tire.
BRAKE FLUID LEVEL AND LEAKS
BRAKE FLUID LEVEL AND LEAK S : On Board InspectionINFOID:0000000005403161
LEVEL CHECK
• Make sure the fluid level in reservoir tank is between MAX and MIN
lines as shown.
• Visually check around reservoir tank for fluid leaks.
• If fluid level is excessively low, check brake system for leaks.
• If brake warning lamp remains illuminated after parking brake pedal is released, check brake system for fluid leaks.
BRAKE LINES AND CABLES
BRAKE LINES AND CABLES : Ch ecking Brake Line and CablesINFOID:0000000005259676
1. Check the brake lines and hoses for cracks, deterioration, and
other damage. Replace any damaged parts.
CAUTION:
If brake fluid leaks are visible around the brake line joints,
retighten the joint, or replace damaged parts as necessary.
2. Check for brake fluid leaks by fully depressing brake pedal while engine is running.
DISC BRAKE
Maximum allowable imbalance Dynamic (At rim flange) 5 g (0.18 oz) (one side)
Static
10 g (0.35 oz)
Wheel nut torque : 133 N·m (14 kg-m, 98 ft-lb)
SMA829C
LFIA0225E
SBR389C
Revision: April 20092010 QX56

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGRAX-5
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHN ESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148953
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable
Reference page
—
RAX-10RAX-7—
RAX-8—
DLN-242, "
NVH Troubleshooting Chart
"
FAX-5, "
NVH Troubleshooting Chart
"
FSU-5, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
DLN-194, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
DIFFERENTIAL
FRONT AXLE
FRONT SUSPENSION
REAR SUSPENSION
TIRES
ROAD WHEEL
PROPELLER SHAFT
BRAKES
STEERING
Symptom Noise
×× ×× ××× ×××××
Shake × × ×× ×× ×××××
Vibration ×× ××× ××× ×
Shimmy ×× ×× ×× ××
Shudder × ××××××
Poor quality ride or handling ×× ××× ×× ×
Revision: April 20092010 QX56

PRECAUTIONSRSU-3
< 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.
Precaution for Rear SuspensionINFOID:0000000005148126
• When installing the rubber bushings, the final tightening must be done under unladen condition and with the
tires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare
tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Caulking nuts are not reusable. Always use new caulking nuts for installation. New caulking nuts are pre- oiled, do not apply any additional lubrication.
Revision: April 20092010 QX56

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGRSU-5
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHN ESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148128
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
RSU-9RSU-15
—
—
—
RSU-9RSU-6RSU-23
DLN-194, "
NVH Troubleshooting Chart
"
DLN-242, "
NVH Troubleshooting Chart
"
FAX-5, "
NVH Troubleshooting Chart
"
FSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE
FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom Noise
×××××× ××× ××××××
Shake ×××× × × × ××××××
Vibration ××××× × × ×× × ×
Shimmy ×××× × × ××× ××
Shudder ××× × ××× ××
Poor quality ride or handling ××××× ×× × ×××
Revision: April 20092010 QX56