2009 INFINITI QX56 cooling

LAN-44
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
FUNCTION DIAGNOSIS
CAN COMMUNICATION SYSTEM
CAN System Specification ChartINFOID:0000000003776453
Determine CAN system type from the following specificat
ion chart. Then choose the correct diagnosis sheet.
NOTE:
Refer to LAN-14, "
Trouble Diagnosis Procedure" for how to use CAN system specification chart.
×: Applicable
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE:
Check CAN system type from the vehicle shape and equipment.
CAN Communication Signal ChartINFOID:0000000003776454
Refer to LAN-13, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
NOTE:
Refer to LAN-36, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
Body type Wagon
Axle 2WD4WD
Engine VK56DE
Transmission A/T
Brake control VDC
ICC system ××
CAN system type 1234
Diagnosis sheet LAN-40
LAN-41LAN-42LAN-43
AWMIA0012GB
Signal name/Connecting unitECM
TCM
LASER ICC
ADP
AV
BCM
HVAC I-KEY M&A
STRG 4WDABS
IPDM-E
Accelerator pedal position signal T RR R R
A/C compressor request signal T R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T RR
Cooling fan speed request signal T R
Engine coolant temperature signal T RR
Revision: December 20092009 QX56

MA-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000003776977
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000003776978
Tool number
(Kent-Moore No.)
Tool name Description
KV10115801
(J-38956)
Oil filter cap wrench Removing and installing oil filter
a: 64.3 mm (2.531 in)
KV991J0010
(J-23688)
Engine coolant refractometer Checking concentration of ethylene glycol in
engine coolant
KV991J0070
(J-45695)
Coolant refill tool Filling cooling system
—
(J-24460-92)
Radiator pressure test adapter set Adapting radiator pressure tester to reservoir
filler neck.
NT375
WBIA0539E
LMA053
AWBIA0891ZZ
Revision: December 20092009 QX56

MA-12
< ON-VEHICLE MAINTENANCE >
RECOMMENDED FLUIDS AND LUBRICANTS
RECOMMENDED FLUIDS AND LUBRICANTS
Fluids and LubricantsINFOID:0000000003776984
*1: For further details, refer to MA-13, "Engine Oil Recommendation".
*2: If Genuine NISSAN Matic S ATF is not available, Genuine Matic J ATF may also be used. Using automatic transmission fluid
other than Genuine NISSAN Matic S ATF or Matic J ATF will cause deterioration in drivability and automatic transmission dura-
bility, and may damage the automatic transmission, which is not covered by the INFINITI new vehicle limited warranty.
*3: DEXRON
TM VI type ATF may also be used.
*4: Available in mainland U.S.A. through an INFINITI dealer.
*5: For further details, see “Air conditioner specification label”.
*6: For hot climates, viscosity SAE 90 is suitable for ambient te mperatures above 0° C (32 ° F).
*7: For improved vehicle performance, INFINITI recommends the use of unleaded premium gasoline with an octane rating of at leas t 91
AKI (RON 96). For further details, refer to GI-27, "
Precaution for Fuel (Unleaded Premium Gasoline Recommended)",
*8: See an INFINITI dealer for service for synthetic oil.
*9: Using fluid other than Genuine Nissan Matic D ATF may cause deterioration in drivability and transfer durability, and may d amage the
transfer, which is not covered by the (INFINITI new vehicle limited) warranty. 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) *7
Engine oil
Drain and refill With oil filter
change
6.5
6 7/8 qt 5 3/4 qt
• Engine oil with API Certification Mark*1
• Viscosity SAE 5W-30
Without oil filter
change
6.2
6 1/2 qt 5 1/2 qt
Dry engine (engine overhaul) 7.6 8 qt
6 3/4 qt
Cooling system With reservoir
at MAX level
14.4
15 1/4 qt 12 5/8 qt 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 S ATF *2
Rear differential gear 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
*8
Transfer fluid 3.0 3 1/8 qt 2 5/8 qt Genuine NISSAN Matic D ATF recom-
mended *9
Front differential gear oil 1.6 3 3/8 pt 2 7/8 pt Genuine NISSAN Differential Oil Hypoid
Super GL-5 80W-90 or API GL-5 Viscosi-
ty 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 equiv-
alent
Multi-purpose grease —— — NLGI No. 2 (lithium soap base)
Windshield washer fluid 4.5 4 3/4 qt
4 qtGenuine 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 equiv-
alent *5
Revision: December 20092009 QX56

RECOMMENDED FLUIDS AND LUBRICANTSMA-13
< ON-VEHICLE MAINTENANCE >
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Engine Oil RecommendationINFOID:0000000003776985
NISSAN recommends the use of an energy conserving oil in order to
improve fuel economy. Select only
engine oils that meet the Ameri-
can Petroleum Institute (API) cert ification and International Lubricant
Standardization and Approval Committee (ILSAC) certification and
SAE viscosity standard (2). These oils have the API certification
mark (1) on the front of the container. Oils which do not have the
specified quality label should not be used as they could cause
engine damage.
ANTI-FREEZE COOLANT MIXTURE RATIO
The engine cooling system is filled at the factory wit h 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 cool-
ant 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.
ALPIA0001ZZ
For outside temperatures down to: Anti-freeze coolant mixture ratio
° C ° F Genuine NISSAN Long Life
Antifreeze coolant Demineralized water or distilled
water
– 35° – 30° 50 % 50 %
Revision: December 20092009 QX56

MA-14
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE
ENGINE MAINTENANCE
Checking Drive BeltsINFOID:0000000004215528
WARNING:
Be sure to perform when the engine is stopped.
1. Remove air duct and resonator assembly 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 drive belt auto tensioner indication when the engine is cold.
• The indicator notch is located on the moving side of the drive belt 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 MA-14
.
DRIVE BELT TENSION
There is no manual drive belt tension adjustment. The driv e belt tension is automatically adjusted by the drive
belt auto tensioner.
Changing Engine CoolantINFOID:0000000004215534
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, th en 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 pump pulley 3. Generator pulley
4. Crankshaft pulley 5. A/C compressor6. Idler pulley
7. Cooling fan pulley 8. Water pump pulley 9. Drive belt auto tensioner
A. Allowable working range
LBIA0391E
Revision: December 20092009 QX56

ENGINE MAINTENANCEMA-15
< ON-VEHICLE MAINTENANCE >
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3. Open the radiator drain plug at the bottom of the radiator, and
remove the radiator filler cap. This is the only step required
when partially draining the cooling system (radiator only).
CAUTION:
Do not to allow the coolant to contact the drive belts.
4. When draining all of the coolant in the system for engine removal or repair, it is necessary to drain the cylinder block.
Remove the RH cylinder block drain plug to drain the right bank
and the oil cooler hose to drain the left bank as shown.
5. Remove the reservoir tank to drain the engine cool ant, then clean the reservoir tank before installing it.
6. Check the drained coolant for contaminants such as rust, corrosion or discoloration. If the coolant is contaminated, flush the engine cooling system.
REFILLING ENGINE COOLANT
1. Close the radiator drain plug. Install the reservoir t ank, cylinder block drain plug, and the oil cooler hose, if
removed for a total system drain or for engine removal or repair.
• The radiator must be complete ly empty of coolant and water.
• Apply sealant to the threads of the cylinder block drain plug. Use Genuine High Performance Thread Sealant or equivalent. Refer to GI-15, "
Recommended Chemical Products and Sealants".
2. Set the vehicle heater controls to the full HOT and heat er ON position. Turn the vehicle ignition ON with
the engine OFF as necessary to activate the heater mode.
3. Remove the vented reservoir cap and replace it wit h a non-vented reservoir cap before filling the cooling
system.
WBIA0391E
PBIC0146E
WBIA0392E
Radiator drain plug : Refer to CO-15.
RH cylinder block drain plug : Refer to EM-82
.
Revision: December 20092009 QX56

MA-16
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE
4. Install the Tool by installing the radiator cap adapter onto theradiator 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 equiva-
lent, mixed 50/50 with distilled water or demineralized water.
Refer to MA-12, "
Fluids and Lubricants".
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 vi sible 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, use the vacuum specifications based on the altitude
above sea level.
9. When the vacuum gauge has reached the specifi ed 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 insert ed) 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 specif ied 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. Tool number
: KV991J0070 (J-45695)
Cooling system capacity
(with reservoir) : Refer to
MA-12, "
Fluids
and Lubricants".
Compressed air
supply pressure : 549 - 824 kPa (5.6 - 8.4 kg/cm
2,
80 - 119 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
Revision: December 20092009 QX56

ENGINE MAINTENANCEMA-17
< ON-VEHICLE MAINTENANCE >
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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.
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.
7. Repeat steps 2 through 6 until clear water begins to drain from the radiator.
Checking Fuel LineINFOID:0000000004215533
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loos e connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
Changing Fuel FilterINFOID:0000000003776989
The fuel filter is part of the fuel level sensor unit, fuel filter and fuel pump assembly. Refer to FL-7, "Removal
and Installation" .
WARNING:
Before replacing the fuel filter, release the fuel pressure from the fuel system. Refer to EC-487, "
Fuel
Pressure Check".
Changing Engine Air Cleaner FilterINFOID:0000000004215529
REMOVAL
NOTE:
• The viscous paper type filter does not need cleaning between replacement intervals.
• Replace the air filter as necessary for periodic maintenance. Refer to MA-8, "
Introduction of Periodic Mainte-
nance".
SMA803A
1. Air cleaner case (lower)2. Air cleaner filter3. Air cleaner case (upper)
4. Air duct and resonator assembly Front
ALBIA0413GB
Revision: December 20092009 QX56