coolant level INFINITI QX56 2004 Factory Owner's Manual

IDX-4
ALPHABETICAL INDEX
Driver air bag .................................................. SRS-45
DTC work support ............................................ EC-113
DTRL - Wiring diagram ....................................... LT-37
Duct and grilles .............................................. ATC-157
DVD Player ........................................................ AV-59
E
ECM input/output signal ..................................... EC-96
ECM power supply ............................. EC-128, EC-361
ECM relay ........................................................ EC-128
ECM/PW - Wiring diagram ............................... EC-362
ECTS - Wiring diagram .................................... EC-167
Electric sunroof .................................................. RF-10
Electric throttle control actuator ......... EC-365, EC-367
Electrical load signal circuit .............................. EC-612
Electrical units location ...................................... PG-64
Electronic ignition (EI) system ........................... EC-28
Engine control circuit diagram ........................... EC-94
Engine control component parts location ........... EC-88
Engine control module (ECM) .......................... EC-351
Engine control system diagram and chart ......... EC-23
Engine coolant .................................................... CO-8
Engine coolant temperature sensor (ECTS) ... EC-165,
EC-178
Engine fail-safe system ...................................... EC-77
Engine oil ............................................................. LU-7
Engine oil filter replacement ............................. MA-16
Engine oil precautions .......................................... GI-7
Engine oil replacement ..................................... MA-16
Engine removal ................................................. EM-70
Engine room cover ............................................ EM-11
Engine serial number .......................................... GI-48
ETC1 - Wiring diagram .................................... EC-368
ETC2 - Wiring diagram .................................... EC-375
ETC3 - Wiring diagram .................................... EC-379
EVAP canister .................................................. EC-636
EVAP canister purge volume control solenoid valve ....
EC-285
, EC-496
EVAP canister vent control valve ....... EC-292, EC-504
EVAP control system (small leak) diagnosis .. EC-276,
EC-316
, EC-324
EVAP control system pressure sensor .... EC-299, EC-
302, EC-308
EVAP control system purge flow monitoring diagnosis
EC-271
EVAP vapor lines inspection ............................. MA-19
Evaporative emission (EVAP) system ............. EC-633
Evaporator ..................................................... ATC-175
Exhaust manifold .............................................. EM-19
Exhaust system ................................................... EX-3
Exhaust system inspection .................................. EX-3
Expansion valve ............................................. ATC-177
F
F/FOG - Wiring diagram ..................................... LT-71
F/PUMP - Wiring diagram ................................ EC-602
Final drive pre-inspection .................. FFD-15, RFD-12
Final drive removal and installation ... FFD-12, RFD-10
Flow charts .......................................................... GI-27
Fluid temperature sensor (A/T) ........................ AT-131
Fluids ................................................................ MA-10
Fluorescent leak detector .............................. ATC-178
Fog lamp, front ................................................... LT-69
Foot lamp ......................................................... LT-129
Freeze frame data ............................... EC-54, EC-107
Front brake solenoid valve ................. AT-151, AT-154
Front bumper ...................................................... EI-13
Front case (Transfer) ....................................... TF-125
Front combination lamp removal and installation LT-33
Front door ............................. BL-129, BL-132, GW-69
Front Door Trim ................................................... EI-31
Front drive shaft (Transfer) .............................. TF-115
Front fog lamp .................................................... LT-69
Front passenger air bag .................................. SRS-50
Front seat ........................................................... SE-96
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner ............... SRS-3, SRS-57
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTTS - Wiring diagram ...................... EC-227, EC-232
Fuel cut control (at no load high engine speed) EC-30
Fuel filter replacement ......................................... FL-5
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) .......... EC-208, EC-217
Fuel injection system (Bank 2) .......... EC-208, EC-217
Fuel injector and fuel tube ................................. EM-29
Fuel level sensor ................. EC-334, EC-336, EC-338
Fuel line inspection .............................................. FL-3
Fuel precautions ................................................... GI-5
Fuel pressure check .......................................... EC-46
Fuel pressure release ....................................... EC-46
Fuel pump ....................................................... EC-601
Fuel pump and gauge .......................................... FL-5
Fuel system .......................................................... FL-3
Fuel tank .............................................................. FL-9
Fuel tank temperature sensor ........... EC-225, EC-231
Fuel tank vacuum relief valve ......................... EC-636
FUELB1 - Wiring diagram ................. EC-210, EC-219
FUELB2 - Wiring diagram ................. EC-211, EC-220
Fuse ...................................................... PG-67, PG-77
Fuse and fusible link box .................................. PG-77
Fuse block ......................................................... PG-76
Fusible link ............................................ PG-67, PG-77
G
Garage jack and safety stand ............................. GI-40
Gauges ................................................................. DI-5
Generator .......................................................... SC-17
Generic scan tool (GST) ................................. EC-116
Glass ...................................... GW-11, GW-69, GW-72
Glove box lamp ................................... LT-152, LT-153
GPS antenna ..................................................... AV-62
Grease .............................................................. MA-10
Ground distribution ............................................ PG-30

LAN-6
[CAN]
CAN COMMUNICATION
Revision: August 20072004 QX56
Engine coolant temperature signal T R R R
A/T self-diagnosis signal R T
Accelerator pedal position signal T R R
Closed throttle position signal T R
Wide open throttle position signal T R
Battery voltage signal T R
Key switch signal R T
Ignition switch signal R T R
P range signal T R
Stop lamp switch signal R T R
Parking brake switch signal T R
Fuel consumption monitor signalTR
TR
Turbine revolution signal R T
Output shaft revolution signal R T
A/C switch signal R T
A/C compressor request signal T R R
Blower fan motor switch signal R T R
A/C switch/indicator signalTR
RT
Cooling fan speed request signal T R R
Position light request signal R T R
Low beam request signal T R
Low beam status signal RT
High beam request signal R T R
High beam status signal RT
Front fog light request signal T R
Day time running light request signal T R
Vehicle speed signalRRT
RRRTRR R
Sleep wake up signal R T R
Door switch signal R R R T R
Turn indicator signal R T
Key fob ID signal R T
Key fob door unlock signal R T
Buzzer output signal R T
Fuel level sensor signal R T
Fuel level low warning signal T R
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T RSignals ECM TCMDriver
seat
con-
trol
unitCom-
bina-
tion
meterDis-
play
con-
trol
unitBCMStee r-
ing
angle
sensorFront
air
control ABS
actua-
tor and
elec-
tric unit
(con-
trol
unit)IPDM
E/R

HEADLAMP (FOR USA)
LT-31
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: August 20072004 QX56
Aiming AdjustmentEKS007A6
For details, refer to the regulations in your state.
Before performing aiming adjustment, check the following.
1. Ensure all tires are inflated to correct pressure.
2. Place vehicle and screen on level surface.
3. Ensure there is no load in vehicle other than the driver (or equivalent weight placed in driver's position).
Coolant and engine oil filled to correct level, and fuel tank full.
4. Confirm spare tire, jack and tools are properly stowed.
5. Confirm headlamp aiming switch is set to "0" (zero) position.
LOW BEAM AND HIGH BEAM
NOTE:
Aim each headlamp individually and ensure other headlamp beam pattern is blocked from screen.
1. Turn headlamp low beam on.
2. Use adjusting screw to perform aiming adjustment.
WKIA1859E

LT-78
FRONT FOG LAMP
Revision: August 20072004 QX56
Aiming AdjustmentEKS007BF
The fog lamp is a semi-sealed beam type which uses a replaceable halogen bulb. Before performing aiming
adjustment, make sure of the following.

Keep all tires inflated to correct pressure.

Place vehicle on level ground.

See that vehicle is unloaded (except for full levels of coolant,
engine oil and fuel, and spare tire, jack, and tools). Have the
driver or equivalent weight placed in driver seat.
Adjust aiming in the vertical direction by turning the adjustment
screw.
NOTE:
Access adjustment screw from underneath front bumper. Turn screw
clockwise to raise pattern and counterclockwise to lower pattern.
1. Set the distance between the screen and the center of the fog
lamp lens as shown.
2. Turn front fog lamps ON.
3. Adjust front fog lamps using adjusting screw so that the top edge
of the high intensity zone is 200 mm (7.9 in) below the height of
the fog lamp centers as shown.

When performing adjustment, if necessary, cover the headlamps
and opposite fog lamp.
SEL350X
MEL327G
MEL328GA

ENGINE OIL
LU-7
C
D
E
F
G
H
I
J
K
L
MA
LU
Revision: August 20072004 QX56
ENGINE OILPFP:KLA92
InspectionEBS00I4J
OIL LEVEL

Before starting the engine make sure the vehicle is parked on a
flat and level surface, then check the oil level. If the engine is
already running, turn it off and allow 10 minutes before check-
ing.

Check that the oil level is within the low (L) and high (H) range
as indicated on the dipstick.

If the engine oil level is out of range, add oil as necessary. Refer
to GI-45, "
Recommended Chemical Products and Sealants" .
OIL APPEARANCE

Check the engine oil for a white milky appearance or excessive contamination.

If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair the broken
parts.
OIL LEAKAGE
Check for oil leakage around the following areas.

Oil pan

Oil pan drain plug

Oil pressure sensor

Oil filter

Oil cooler

Intake valve timing control cover

Intake valve timing control solenoid valve

Front cover

Mating surface between cylinder block and cylinder head

Mating surface between cylinder head and rocker cover

Crankshaft oil seal (front and rear)
OIL PRESSURE CHECK
WA RN ING:

Be careful not to burn yourself, as engine oil may be hot.

Put the selector lever in the Park “P” position.
1. Check the engine oil level. Refer to LU-7, "
OIL LEVEL" .
2. Remove engine front undercover using power tool.
3. Disconnect the oil pressure sensor harness connector.
4. Remove the oil pressure sensor.
SM A95 4C
WBIA0538E

LU-12Revision: August 2007
OIL COOLER
2004 QX56
INSTALLATION
Installation is in the reverse order of removal, paying attention to the following:

Confirm that no foreign objects are adhering to the sealing sur-
faces of the oil cooler or oil pan.

Tighten the connecting bolt after aligning the stopper on the oil
pan side with protrusion of the oil cooler.
INSPECTION AFTER INSTALLATION
1. Check level of engine oil and engine coolant, and add engine oil and engine coolant. Refer to LU-7, "OIL
LEVEL" and CO-8, "LEVEL CHECK" .
2. Start the engine, and check there is no leak of engine oil or engine coolant.
3. Stop engine and wait for 10 minutes.
4. Check engine oil level and engine coolant level again.
KBIA2500E

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
C
D
E
F
G
H
I
J
K
M
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
C
D
E
F
G
H
I
J
K
MA
B
MA
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-10
RECOMMENDED FLUIDS AND LUBRICANTS
Revision: August 20072004 QX56
RECOMMENDED FLUIDS AND LUBRICANTSPFP:00000
Fluids and LubricantsELS00103
*1: For further details, MA-11, "SAE Viscosity Number" .
*2: Using automatic transmission fluid other than Genuine NISSAN Matic J ATF will cause deterioration in driveability and automatic
transmission durability, and may damage the automatic transmission, which is not covered by the NISSAN new vehicle limited warranty.
*3: For Canada, NISSAN Automatic Transmission Fluid (ATF), DEXRON
TM III or MERCONTM or equivalent ATF may also be used.
*4: Available in mainland U.S.A. through your NISSAN dealer.
*5: For further details, see “Air conditioner specification label”.
*6: For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 0° C (32° F).
*7: DEXRON
TM III, MERCONTM or equivalent may also be used. Outside the continental United States and Alaska contact a NISSAN
dealership for more information regarding suitable fluids, including recommended brand(s) of DEXRONTM III or MERCONTM Auto-
matic Transmission Fluid.
*8: For further details, refer to GI-5, "
Precautions for Fuel (Unleaded Premium Gasoline Required)" . DescriptionCapacity (Approximate)
Recommended Fluids/Lubricants
Metric US measure Imp measure
Fuel
105.8 28 gal 23 1/4 galUnleaded gasoline with octane rating of
at least 91 AKI (RON 96) *8
Engine oil
Drain and refillWith oil filter
change6.2 6 1/2 qt 5 1/2 qt

API Certification Mark *1

API grade SL, Energy Conserving *1

ILSAC grade GF-III *1 Without oil filter
change5.9 6 1/4 qt 5 1/4 qt
Dry engine (engine overhaul)
7.6 8 qt 6 3/4 qt
Cooling systemWith reservoir at
MAX level14.4 3 3/4 gal 3 1/8 galGenuine NISSAN Long Life Anti-freeze
coolant or equivalent
Automatic transmission fluid (ATF)
10.6 11 1/4 qt 9 3/8 qt Genuine NISSAN Matic J ATF *2
Rear final drive oil
1.75 3 3/4 pt 3 1/8 pt API GL-5 Viscosity SAE 80W-90 *6
Transfer fluid
3.0 3 1/8 qt 2 5/8 qtGenuine NISSAN Matic D ATF (Conti-
nental U.S and Alaska) or Canada NIS-
SAN Automatic Transmission Fluid *7
Front final drive oil
1.6 3 3/8 pt 2 7/8 pt API GL-5 Viscosity SAE 80W-90 *6
Power steering fluid (PSF)
1.0 1 1/8 qt 7/8 qt Genuine NISSAN PSF or equivalent *3
Brake fluid — — —Genuine NISSAN Super Heavy Duty
Brake Fluid or equivalent,
DOT 3 (US FMVSS No. 116) *4
Brake grease — — —PBC (poly butyl cuprysil) grease or
equivalent
Multi-purpose grease — — — NLGI No. 2 (lithium soap base)
Windshield washer fluid
4.5 1 1/4 gal 1 galGenuine NISSAN Windshield Washer
Concentrate Cleaner & Anti-freeze or
equivalent
Air conditioning system refrigerant 1.08 ± 0.05 kg 2.38 ± 0.11 lb 2.38 ± 0.11 lb HFC-134a (R-134a) *5
Air conditioning system lubricants
290 m9.8 fl oz 10.2 fl ozNISSAN A/C System Lubricant Type S
(DH-PS) or equivalent *5

MA-14
ENGINE MAINTENANCE
Revision: August 20072004 QX56
4. Install the Tool by installing the radiator cap adapter onto the
radiator neck opening. Then attach the gauge body assembly
with the refill tube and the venturi assembly to the radiator cap
adapter.
5. Insert the refill hose into the coolant mixture container that is
placed at floor level. Make sure the ball valve is in the closed
position.

Use Genuine NISSAN Long Life Anti-freeze coolant or equiv-
alent, mixed 50/50 with distilled water or demineralized water.
Refer to MA-11, "
ANTI-FREEZE COOLANT MIXTURE
RATIO" .
6. Install an air hose to the venturi assembly, the air pressure must
be within specification.
CAUTION:
The compressed air supply must be equipped with an air
dryer.
7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open
the ball valve on the refill hose slightly. Coolant will be visible rising in the refill hose. Once the refill hose is
full of coolant, close the ball valve. This will purge any air trapped in the refill hose.
8. Continue to draw the vacuum until the gauge reaches 28 inches
of vacuum. The gauge may not reach 28 inches in high altitude
locations, refer to the vacuum specifications based on the alti-
tude above sea level.
9. When the vacuum gauge has reached the specified amount, disconnect the air hose and wait 20 seconds
to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the
system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for any leaks.
10. Place the coolant container (with the refill hose inserted) at the same level as the top of the radiator. Then
open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling
system is full when the vacuum gauge reads zero.
CAUTION:
Do not allow the coolant container to get too low when filling, to avoid air from being drawn into
the cooling system.
11. Remove the Tool from the radiator neck opening and install the radiator cap.
12. Remove the non-vented reservoir cap.
13. Fill the cooling system reservoir tank to the specified level. Run the engine to warm up the cooling system
and top up the system as necessary before installing the vented reservoir cap.
FLUSHING COOLING SYSTEM
1. Drain the water from the engine cooling system. Refer to MA-12, "DRAINING ENGINE COOLANT" .
2. Fill the radiator and the reservoir tank (to the “MAX” line), with water. Reinstall the radiator cap and leave
the vented reservoir cap off.Tool number : KV991J0070 (J-45695)
Cooling system capacity
(with reservoir tank): Refer to MA-10, "
Fluids
and Lubricants" .
Compressed air
supply pressure: 5.7 - 8.5 kPa (5.6 - 8.4 kg/cm
2
, 80 - 120 psi)
LLIA0058E
Altitude above sea level Vacuum gauge reading
0 - 100 m (328 ft) : 28 inches of vacuum
300 m (984 ft) : 27 inches of vacuum
500 m (1,641 ft) : 26 inches of vacuum
1,000 m (3,281 ft) : 24 - 25 inches of vacuum
LLIA0057E