2006 INFINITI QX56 coolant temperature

MA-6
GENERAL MAINTENANCE
Revision: November 20092006 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).Brakes
Check that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
booster Check 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. ACC-5, "
ADJUSTABLE
ACCELERATOR
PEDAL",
BR-17, "On-
Vehicle Service"
Parking brake Check 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-9, "Parking Brake
Control"
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.
—
Item
Reference page
Item Reference page
Windshield washer
fluid Check that there is adequate fluid in the tank.
—
Engine coolant level Check the coolant level when the engine is cold. —
Radiator and hoses Check 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 level Make sure that the brake fluid level is between the “MAX ” and “ MIN” lines on the
reservoirs MA-28
Battery
Check 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 belt Make sure that no belt is frayed, worn, cracked or oily. MA-13
Engine oil levelCheck the level on the dipstick after parking the vehicle on a level spot and turn-
ing off the engine. —
Power steering fluid
level and lines Check 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-22
Exhaust system
Make 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-22
Underbody
The 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 leaks Check 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. —

PERIODIC MAINTENANCEMA-7
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PERIODIC MAINTENANCEPFP:00026
Introduction of Periodic MaintenanceELS001BJ
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)ELS001BK
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 1ELS001BL
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
Schedule 1
Follow 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 Maintenance
MA-7
Chassis and Body
MaintenanceMA-8
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-7Chassis and Body
MaintenanceMA-8
MAINTENANCE OPERATION
MAINTENANCE INTERVAL
Reference
Section -
Page or -
Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000)
Months 3.75
(6)
3 7.50
(12)
6 11 . 2 5
(18)
9 15
(24)
12 18.75
(30)
15 22.5
(36)
18 26.25
(42)
21 30
(48)
24
Drive belts NOTE (1) MA-13
Air cleaner filterNOTE (2) [R]MA-16
EVAP vapor lines I*MA-20
Fuel lines I*MA-16
Fuel filter NOTE (3) —
Engine coolant NOTE (4) MA-13
Engine oilR R R R R R R R MA-17
Engine oil filterR R R R R R R R MA-17
Spark plugs (double PLATINUM-
TIPPED type)Replace every 105,000 miles (169,000 km).
MA-18
Intake and exhaust valve clear-
ance*NOTE (5)
EM-105

RECOMMENDED FLUIDS AND LUBRICANTSMA-11
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RECOMMENDED FLUIDS AND LUBRICANTSPFP:00000
Fluids and LubricantsELS001BN
*1: For further details, refer to MA-12, "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 warr anty.
*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 Automatic
Transmission Fluid.
*8: For improved vehicle performance, NISSAN recommends the use of unleaded premium gasoline with an octane rating of at least 91
AKI (RON 96). For further details, refer to GI-5, "
Precautions for Fuel (Unleaded Premium Gasoline Required)" .
*9: See your INFINITI dealer for service for synthetic oil. Description
Capacity (Approximate)
Recommended Fluids/Lubricants
Metric US measure Imp measure
Fuel 105.8 28 gal 23 1/4 gal Unleaded gasoline with octane rating of
at least 87 AKI (RON 91) *8
Engine oil
Drain and refill With oil filter
change
6.2
6 1/2 qt 5 1/2 qt

API Certification Mark *1

API grade SG, Energy Conserving II or
API grade SH, SJ or SL *1

ILSAC grade GF-II and GF-III *1
Without oil filter
change
5.9
6 1/4 qt 5 1/4 qt
Dry engine (engine overhaul) 7.6 8 qt
6 3/4 qt
Cooling system With reservoir
at MAX level
14.4
3 3/4 gal 3 1/8 gal Genuine 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 Synthetic 75W-90 Gear Oil
(Part No. 999MP-DF200p) or equivalent
*9
Transfer fluid 3.0 3 1/8 qt 2 5/8 qt Genuine 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 2 1/8 pt 1 3/4 pt 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 gal Genuine 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 oil 290 m9.8 fl oz 10.2 fl oz NISSAN A/C System Oil Type S or
equivalent *5

MA-12
RECOMMENDED FLUIDS AND LUBRICANTS
Revision: November 20092006 QX56
SAE Viscosity NumberELS001BO
GASOLINE ENGINE OIL

SAE 5W-30 viscosity oil is preferred for all temperatures. If 5W-
30 is not available, select the viscosity from the chart that is suit-
able for the outside temperature range.
ANTI-FREEZE COOLANT MIXTURE RATIO
The engine cooling system is filled at the factory with a high-quality, long life, year-round, anti-freeze coolant
solution. The anti-freeze solution contains rust and corrosion inhibitors. Therefore, additional cooling system
additives are not necessary.
CAUTION:

When adding or replacing coolant, be sure to use only Genuine NISSAN Long Life Anti-freeze
coolant or equivalent with the proper mixture ratio of 50% anti-freeze and 50% demineralized water
or distilled water.

Other types of coolant solutions may damage your cooling system.
BLIA0001E
For outside temperatures down to:Anti-freeze coolant mixture ratio
° C ° FGenuine NISSAN Long Life
Antifreeze coolant Demineralized water or distilled
water
– 35 ° – 30 ° 50 % 50 %

ENGINE MAINTENANCEMA-13
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ENGINE MAINTENANCEPFP:00000
Checking Drive BeltsELS001PG
WARNING:
Be sure to perform when the engine is stopped.
1. Remove air duct and resonator assembly (inlet) when inspecting drive belt.
2. Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range
“A” (between three line notches) as shown.
NOTE:

Check the auto tensioner indication when the engine is cold.

When the new drive belt is installed, the range should be “A” as shown.

The indicator notch is located on the moving side of the auto tensioner.
3. Visually check entire belt for wear, damage or cracks.
4. If the indicator is out of allowable working range or belt is damaged, replace the belt. Refer to EM-13,
"DRIVE BELTS" .
DRIVE BELT TENSION
There is no manual drive belt tension adjustment. The drive belt tension is automatically adjusted by the auto
tensioner.
Changing Engine CoolantELS001PH
WARNING:

To avoid being scalded, never change the coolant when the engine is hot.

Wrap a thick cloth around the cap to carefully remove the cap. First, turn the cap a quarter of a
turn to release any built-up pressure, then push down and turn the cap all the way to remove it.
DRAINING ENGINE COOLANT
1. Turn ignition switch ON and set temperature control lever all the way to HOT position or the highest tem-
perature position. Wait 10 seconds and turn ignition switch OFF.
2. Remove the engine front undercover using power tool.
1. Drive belt 2. Power steering oil pump pulley 3. Generator pulley
4. Crankshaft pulley 5. A/C compressor6. Idler pulley
7. Cooling fan pulley 8. Water pump pulley9. Drive belt tensioner
LBIA0391E

MA-16
ENGINE MAINTENANCE
Revision: November 20092006 QX56
3. Run the engine until it reaches normal operating temperature.
4. Press the engine accelerator two or three times under no-load.
5. Stop the engine and wait until it cools down.
6. Drain the water from the engine cooling system. Refer to MA-13, "
DRAINING ENGINE COOLANT" .
7. Repeat steps 2 through 6 until clear water begins to drain from the radiator.
Checking Fuel LinesELS001PI
Inspect the fuel lines and fuel tank for improper mounting, leaks,
cracks, damage, loose connections, chafing, or deterioration.
As necessary, repair or replace any faulty parts.
Changing Fuel FilterELS001PJ
The fuel filter is part of the fuel level sensor unit, fuel filter and fuel pump assembly. Refer to FL-6, "FUEL
LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY" .
WARNING:
Before replacing the fuel filter, release the fuel pressure from the fuel system. Refer to EC-80, "
FUEL
PRESSURE RELEASE" .
Changing Engine Air Cleaner FilterELS001PK
VISCOUS PAPER TYPE
NOTE:

The viscous paper type filter does not need cleaning between replacement intervals.

Replace the air filter as necessary for required maintenance.
1. Remove the air duct and resonator assembly.
2. Disconnect the harness connector, then remove the air cleaner case (upper).
3. Remove the air cleaner filter from the air cleaner case (lower).
4. Install the new air cleaner filter in the air cleaner case (lower).
SMA803A
1. Air cleaner case (upper) 2. Air cleaner filter3. Air cleaner case (lower)
4. Air duct and resonator assembly
WBIA0465E

PG-62
HARNESS
Revision: November 20092006 QX56
Wiring Diagram Codes (Cell Codes)EKS00BNE
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
CodeSection Wiring Diagram Name
A/C,A ATC Auto Air Conditioner
A/SUSP RSU Rear Air Suspension
AF1B1 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 1)
AF1B2 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 2)
AF1HB1 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 1)
AF1HB2 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 2)
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC ASCD Brake Switch
ASC/SW EC ASCD Steering Switch
ASCBOF EC ASCD Brake Switch
ASCIND EC ASCD Indicator
A/T AT A/T Assembly
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Auto Light Control
B/CLOS BL Back Door Auto Closure System
BACK/L LT Back-up Lamp
BRK/SW EC Brake Switch
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CLOCK DI Clock
COOL/F EC Cooling Fan Control
COMBSW LT Combination Switch
COMM AV Audio Visual Communication System
COMPAS DI Compass and Thermometer
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
DVD AV DVD Entertainment System
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
ETC1 EC Electric Throttle Control Function
ETC2 EC Throttle Control Motor Relay
ETC3 EC Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FTTS EC Fuel Tank Temperature Sensor
FUELB1 EC Fuel Injection System Bank 1
FUELB2 EC Fuel Injection System Bank 2
H/AIM LT Headlamp Aiming Control
H/PHON AV Hands Free Telephone
H/LAMP LT Headlamp

SC-16
STARTING SYSTEM
Revision: November 20092006 QX56
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
Removal and InstallationEKS00B7E
REMOVAL
1. Remove the intake manifold. Refer to EM-17, "Removal and Installation" .
2. Remove/disconnect the starter harness connectors.
3. Remove the two starter bolts, using power tools.
4. Remove the starter.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Tighten terminal nut carefully.
Engine coolant temperature Voltage V
− 30°C to − 20°C ( −22° F to − 4°F) 8.4
− 19 °C to −10°C ( −2°F to 14 °F) 8.9
− 9°C to 0 °C (16 °F to 32 °F) 9.3
More than 1 °C (More than 34 °F) 9.7
WKIA1388E
Terminal nut : 10.8 N·m (1.1 kg-m, 8 ft-lb)