2004 INFINITI QX56 fluid

LAN-12
[CAN]
CAN COMMUNICATION
Revision: August 20072004 QX56
Buzzer output signal R T
Fuel level sensor signal R T
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T R
Malfunction indicator lamp signal T R
Fuel level low warning signal T R
Front wiper request signal T R
Front wiper stop position signal R T
Rear window defogger switch signal T R R
Rear window defogger control signal R R R T
Hood switch signal R T
Theft warning horn request signal T R
Horn chirp signal T R
Steering angle sensor signal T R
ABS warning lamp signal R T
VDC OFF indicator lamp signal R T
SLIP indicator lamp signal R T
Brake warning lamp signal R T
System setting signalRT
TR
Distance to empty signal T R
ASCD operation signal T R
ASCD OD cancel request T R
A/T CHECK indicator lamp signal T R
A/T position indicator lamp signal T R R
Tire pressure signal R T
Tire pressure data signal R T
1st position switch signal R T
4th position switch signal R T
Tow mode switch signal R T
A/T fluid temperature sensor signal T RSignals ECM TCMDriver
seat
con-
trol
unitCom-
bina-
tion
meterDis-
play
con-
trol
unitBCMSteer-
ing
angle
sen-
sorFront
air
con-
trolTrans-
fer
con-
trol
unitABS
actua-
tor
and
elec-
tric
unit
(con-
trol
unit)IPDM
E/R

CAN COMMUNICATION
LAN-15
[CAN]
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LAN
Revision: August 20072004 QX56
TCS malfunction signal R T
VDC malfunction signal R T
Brake pressure sensor signal R T
System setting signalRT
TR
Distance to empty signal T R
ASCD operation signal T R
ASCD OD cancel request T R
A/T CHECK indicator lamp signal T R
A/T position indicator lamp signal T R R R
Current gear position signal T R
Tire pressure signal R T
Tire pressure data signal R T
1st position switch signal R T
4th position switch signal R T
Tow mode switch signal R T
A/T fluid temperature sensor sig-
nalTR
ICC operation signal R R T
ICC OD cancel request signal R R T
ICC sensor signal T R
ICC system display signal T R
ICC steering switch signal T RSignals ECM TCMICC
sen-
sorICC
unitDriver
seat
con-
trol
unitCom-
bina-
tion
mete
rDis-
play
con-
trol
unitBCMStee r-
ing
angle
sen-
sorFront
air
con-
trolTra ns -
fer
con-
trol
unitABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)IPD
M
E/R

LU-8Revision: August 2007
ENGINE OIL
2004 QX56
5. Install Tools.
6. Start the engine and warm it up to normal operating temperature.
7. Check the engine oil pressure with engine running under no-load.
Engine oil pressure [Engine oil temperature at 80°C (175°F)]
Unit: kPa (kg/cm2
, psi)
CAUTION:
If the difference is extreme, check the oil passages and oil pump for leaks and blockages.
8. After the inspections, install the oil pressure sensor as follows:
a. Remove the old liquid gasket adhering to oil pressure sensor and engine.
b. Apply liquid gasket and tighten oil pressure sensor to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-45, "
Recommended Chemical Prod-
ucts and Sealants" .
c. After warming up engine, make sure there is no leakage of engine oil with engine running.
Changing Engine OilEBS00I4K
WAR NIN G:

Be careful not to burn yourself, as the engine oil is hot.

Prolonged and repeated contact with used engine oil may
cause skin cancer; try to avoid direct skin contact with
used engine oil. If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as possible.
1. Remove engine front undercover using power tool.
2. Warm up engine, and check for oil leakage from engine compo-
nents. Refer to LU-7, "
OIL LEAKAGE" .
3. Stop engine and wait for 10 minutes.
4. Loosen oil filler cap, then remove drain plug.
5. Drain engine oil.
6. Install drain plug with new washer.
CAUTION:

Be sure to clean drain plug and install with new washer.
7. Refill with new engine oil. Refer to MA-10, "
Fluids and Lubricants" . Tool number : ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)
WBIA0571E
Engine Speed Approximate Discharge Pressure
Idle speed More than 98 (1.0, 14)
2,000 rpm More than 294 (3.0, 43)
Oil pressure sensor torque : 14.7 N·m (1.5 kg-m, 11 ft-lb)
Oil pan drain plug : 34.3 N·m (3.5 kg-m, 25 ft-lb)
KBIA2498E

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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SECTION MA
A
B
MA
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
GENERAL MAINTENANCE ....................................... 4
General Maintenance ............................................... 4
PERIODIC MAINTENANCE ....................................... 6
Introduction of Periodic Maintenance ....................... 6
Maintenance For Off-road Driving (4WD only) ......... 6
Schedule 1 ............................................................... 6
EMISSION CONTROL SYSTEM MAINTE-
NANCE .................................................................. 6
CHASSIS AND BODY MAINTENANCE ............... 7
Schedule 2 ............................................................... 8
EMISSION CONTROL SYSTEM MAINTE-
NANCE .................................................................. 8
CHASSIS AND BODY MAINTENANCE ............... 9
RECOMMENDED FLUIDS AND LUBRICANTS ...... 10
Fluids and Lubricants ............................................. 10
SAE Viscosity Number ............................................11
GASOLINE ENGINE OIL .....................................11
ANTI-FREEZE COOLANT MIXTURE RATIO ......11
ENGINE MAINTENANCE ......................................... 12
Checking Drive Belts .............................................. 12
DRIVE BELT TENSION ...................................... 12
Changing Engine Coolant ...................................... 12
DRAINING ENGINE COOLANT ......................... 12
REFILLING ENGINE COOLANT ........................ 13
FLUSHING COOLING SYSTEM ......................... 14
Checking Fuel Lines ............................................... 15
Changing Fuel Filter ............................................... 15
Changing Engine Air Cleaner Filter ........................ 15
VISCOUS PAPER TYPE ..................................... 15
Changing Engine Oil .............................................. 16
Changing Oil Filter ................................................. 16
Changing Spark Plugs ........................................... 17
REMOVAL ........................................................... 17INSPECTION AFTER REMOVAL ....................... 18
INSTALLATION ................................................... 19
Checking EVAP Vapor Lines .................................. 19
CHASSIS AND BODY MAINTENANCE ................... 20
Changing In-cabin Microfilter .................................. 20
Checking Exhaust System ...................................... 21
Checking A/T Fluid ................................................. 21
Changing A/T Fluid ................................................. 23
Checking Transfer Fluid ......................................... 24
FLUID LEAKAGE AND FLUID LEVEL ................ 24
Changing Transfer Fluid ......................................... 24
DRAINING ........................................................... 24
FILLING ............................................................... 24
Checking Propeller Shaft ........................................ 24
Checking Final Drive Oil ......................................... 24
Changing Final Drive Oil ......................................... 25
Balancing Wheels ................................................... 25
REMOVAL ........................................................... 25
WHEEL BALANCE ADJUSTMENT ..................... 25
Tire Rotation ........................................................... 27
Checking Brake Fluid Level and Leaks .................. 27
Checking Brake Lines and Cables ......................... 27
Checking Disc Brake .............................................. 28
ROTOR ................................................................ 28
CALIPER ............................................................. 28
PAD ..................................................................... 28
Checking Steering Gear and Linkage ..................... 28
STEERING GEAR ............................................... 28
STEERING LINKAGE ......................................... 28
Checking Power Steering Fluid and Lines .............. 29
CHECKING FLUID LEVEL .................................. 29
CHECKING LINES .............................................. 29
Checking Axle and Suspension Parts .................... 29
FRONT AND REAR AXLE AND SUSPENSION
PARTS ................................................................. 29
DRIVE SHAFT ..................................................... 29
Lubricating Locks, Hinges and Hood Latches ........ 30
Checking Seat Belts, Buckles, Retractors, Anchors
and Adjusters .......................................................... 31

GENERAL MAINTENANCE
MA-5
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Revision: August 20072004 QX56
UNDER THE HOOD AND VEHICLE
The maintenance items listed here should be checked periodically (e.g. each time you check the engine oil or refuel).BrakesCheck that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
boosterCheck the pedal for smooth operation and make sure it has the proper distance
under it when depressed fully. Check the brake booster function. Keep the floor
mats away from the pedal.BR-6, "
Inspection and
Adjustment", BR-17,
"On-Vehicle Service"
Parking brakeCheck that the parking brake control has the proper travel and make sure that
the vehicle is held securely on a fairly steep hill when only the parking brake is
applied.PB-3, "On-Vehicle Ser-
vice"
Automatic transmis-
sion “Park” mecha-
nismOn a fairly steep hill check that the vehicle is held securely with the selector
lever in the P position without applying the brakes. — ItemReference page
ItemReference page
Windshield washer
fluidCheck that there is adequate fluid in the tank.
—
Engine coolant levelCheck the coolant level when the engine is cold.MA-12
Radiator and hosesCheck the front of the radiator and clean off any dirt, insects, leaves, etc., that
may have accumulated. Make sure the hoses have no cracks, deformation,
deterioration or loose connections.—
Brake fluid levelMake sure that the brake fluid level is between the “MAX” and “MIN” lines on the
reservoirsMA-27
BatteryCheck the fluid level in each cell. It should be between the “MAX” and “MIN”
lines. Vehicles operated in high temperatures or under severe conditions require
frequent checks of the battery fluid level.—
Engine drive beltMake sure that no belt is frayed, worn, cracked or oily.MA-12
Engine oil levelCheck the level on the dipstick after parking the vehicle on a level spot and turn-
ing off the engine.MA-16
Power steering fluid
level and linesCheck the level on the reservoir with the engine off. Check the lines for improper
attachment, leaks, cracks, etc.MA-29
Automatic transmis-
sion fluid levelCheck the level on the dipstick after putting the selector lever in “P” with the
engine idling.MA-21
Exhaust systemMake sure there are no loose supports, cracks or holes. If the sound of the
exhaust seems unusual or there is a smell of exhaust fumes, immediately locate
the trouble and correct it.MA-21
UnderbodyThe underbody is frequently exposed to corrosive substances such as those
used on icy roads or to control dust. It is very important to remove these sub-
stances, otherwise rust will form on the floor pan, frame, fuel lines and around
the exhaust system. At the end of winter, the underbody should be thoroughly
flushed with plain water, being careful to clean those areas where mud and dirt
can easily accumulate.—
Fluid leaksCheck under the vehicle for fuel, oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping from the air conditioner after use is
normal. If you should notice any leaks or gasoline fumes are evident, check for
the cause and correct it immediately.—

MA-6
PERIODIC MAINTENANCE
Revision: August 20072004 QX56
PERIODIC MAINTENANCEPFP:00026
Introduction of Periodic MaintenanceELS00100
Two different maintenance schedules are provided, and should be used, depending upon the conditions in
which the vehicle is mainly operated. After 60,000 miles (96,000 km) or 48 months, continue the periodic
maintenance at the same mileage or time intervals, whichever comes first.
Maintenance For Off-road Driving (4WD only)ELS0012H
After driving the vehicle off-road through sand, mud, or water; more frequent maintenance may be required for
the following items:
Brake pads and rotors
Brake lines and hoses
Rear final drive oil, transmission fluid, and transfer fluid
Steering linkage
Drive shafts
Engine air cleaner filter
In-cabin microfilters
Schedule 1ELS00101
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only Schedule 1Follow Periodic Maintenance Schedule 1 if your driving habits frequently includes
one or more of the following driving conditions:

Repeated short trips of less than 5 miles (8 km).

Repeated short trips of less than 10 miles (16 km) with outside temperatures
remaining below freezing.

Operating in hot weather in stop-and-go “rush hour” traffic.

Extensive idling and/or low speed driving for long distances, such as police,
taxi or door-to-door delivery use.

Driving in dusty conditions.

Driving on rough, muddy, or salt spread roads.

Towing a trailer or using a car-top carrier.Emission Control Sys-
tem MaintenanceMA-6
Chassis and Body
MaintenanceMA-6
Schedule 2Follow Periodic Maintenance Schedule 2 if none of the driving conditions shown
in Schedule 1 apply to the driving habits.Emission Control Sys-
tem MaintenanceMA-8Chassis and Body
MaintenanceMA-8
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title Perform at number of miles,
kilometers or months, which-
ever comes first.Miles x 1,000
(km x 1,000)
Months3.75
(6)
37.50
(12)
611 . 2 5
(18)
915
(24)
1218.75
(30)
1522.5
(36)
1826.25
(42)
2130
(48)
24
Drive belts NOTE (1)MA-12
Air cleaner filter NOTE (2) [R]MA-15
EVAP vapor linesI*MA-19
Fuel linesI*MA-15
Fuel filter NOTE (3)—
Engine coolant NOTE (4)MA-12
Engine oil R R RRRRRRMA-16
Engine oil filter R R RRRRRRMA-16
Spark plugs (double PLATI-
NUM-TIPPED type)Replace every 105,000 miles (169,000 km).MA-17
Intake and exhaust valve
clearance*NOTE (5)EM-52

PERIODIC MAINTENANCE
MA-7
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Revision: August 20072004 QX56
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace drive belts if damaged.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(3) Maintenance-free item. For service procedures, go to the FL section.
(4) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(5) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by NISSAN for reliable vehicle operation. The owner need not perform
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are
required.
CHASSIS AND BODY MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. L = Lubricate. [ ]: At the mileage intervals only. MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title Perform at number of miles,
kilometers or months, which-
ever comes first.Miles x 1,000
(km x 1,000)
Months33.75
(54)
2737.5
(60)
3041.25
(66)
3345
(72)
3648.75
(78)
3952.5
(84)
4256.25
(90)
4560
(96)
48
Drive belts NOTE (1) I*MA-12
Air cleaner filter NOTE (2) [R]MA-15
EVAP vapor linesI*MA-19
Fuel linesI*MA-15
Fuel filter NOTE (3)—
Engine coolant NOTE (4) R*MA-12
Engine oil R R R R R R R RMA-16
Engine oil filter R R R R R R R RMA-16
Spark plugs (double PLATI-
NUM-TIPPED type)Replace every 105,000 miles (169,000 km).MA-17
Intake and exhaust valve
clearance*NOTE (5)EM-52
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section
- Page
or
- Content
Title Perform at number of miles, kilometers or
months, whichever comes first.Miles x
1,000
(km x
1,000)
Months3.75
(6)
37.5
(12)
611 . 2 5
(18)
915
(24)
1218.75
(30)
1522.5
(36)
1826.25
(42)
2130
(48)
24
Brake lines and cables I IMA-27
Brake pads and rotors I I I IMA-28
Automatic transmission fluid NOTE (1) I I MA-21
Transfer fluid and front final drive oil NOTE (1) I IMA-24,
MA-24
Rear final drive oil NOTE (1) I IMA-24,
MA-24
Steering gear, linkage, axle, and suspension
partsIIIIMA-28,
MA-29
Tire Rotation NOTE (2)MA-27
Drive shaft boots and propeller shaft (4WD) I I I IMA-24
Exhaust system I I I IMA-21
In-cabin microfilter R RAT C - 1 4 2

MA-8
PERIODIC MAINTENANCE
Revision: August 20072004 QX56
(1) If towing a trailer, or using a car-top carrier, or driving on rough or muddy roads, change (not just inspect) oil at every 30,000 miles
(48,000 km) or 24 months.
(2) Refer to “Tire rotation” under the “General maintenance” heading earlier in this section.
Schedule 2ELS00102
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace drive belts if damaged.
(2) Maintenance-free item. For service procedures, go to FL section.
(3) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(4) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by NISSAN for reliable vehicle operation. The owner need not perform
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are
required. MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section
- Page
or
- Content
Title Perform at number of miles, kilometers or
months, whichever comes first.Miles x
1,000
(km x
1,000)
Months33.75
(54)
2737.5
(60)
3041.25
(66)
3345
(72)
3648.75
(78)
3952.5
(84)
4256.25
(90)
4560
(96)
48
Brake lines and cables I IMA-27
Brake pads and rotors I I I IMA-28
Automatic transmission fluid NOTE (1) I IMA-21
Transfer fluid and front final drive oil NOTE (1) I IMA-24,
MA-24
Rear final drive oil NOTE (1) I IMA-24,
MA-24
Steering gear, linkage, axle, and suspension
partsII IIMA-28,
MA-29
Tire Rotation NOTE (2)MA-27
Drive shaft boots and propeller shaft (4WD) I I I IMA-24
Exhaust system I I I IMA-21
In-cabin microfilter R RAT C - 1 4 2
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
Section - Page
or - Content
Title Perform at number of miles,
kilometers or months, whichever
comes first.Miles x 1,000
(km x 1,000)
Months7.5
(12)
615
(24)
1222.5
(36)
1830
(48)
2437.5
(60)
3045
(72)
3652.5
(84)
4260
(96)
48
Drive belts NOTE (1) I*MA-12
Air cleaner filter [R] [R]MA-15
EVAP vapor lines I* I*MA-19
Fuel lines I* I*MA-15
Fuel filter NOTE (2)—
Engine coolant NOTE (3) R*MA-12
Engine oil R R R R R R R RMA-16
Engine oil filter R R R R R R R RMA-16
Spark plugs (PLATINUM-
TIPPED type)Replace every 105,000 miles (169,000 km).MA-17
Intake and exhaust valve clear-
ance*NOTE (4)EM-52