weight INFINITI QX56 2010 Factory Owner's Manual

HA-12
< PRECAUTION >
PRECAUTIONS
Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. If an improper
connection is attempted, discharging and contamination may occur.
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC134a (R-134a) and specified
oils have been used with the scale. If the scale controls refrigerant
flow electronically, the hose fitting must be 1/2”-16 ACME.
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder's top valve
when filling the cylinder with refrigerant. Also, the accu racy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.
Shut-off valve rotati on A/C service valve
Clockwise Open
Counterclockwise Close
RHA273D
RHA274D
Revision: April 20092010 QX56

HA-16
< PREPARATION >
PREPARATION
Commercial Service Tool
INFOID:0000000005147641
—
(J-39699)
Refrigerant weight scale For measuring of refrigerant
Fitting size-Thread size
• 1/2”-16 ACME
—
(J-39649)
Vacuum pump
(Including the isolator valve) Capacity:
• Air displacement: 4 CFM
• Micron rating: 20 microns
• Oil capacity: 482 g (17 oz)
Fitting size-Thread size
• 1/2”-16 ACME
Tool number
(Kent-Moore No.)
Tool name
Description
S-NT200
S-NT203
Tool name
Description
(J-41810-NI)
Refrigerant identifier equipment (R-
134a) For checking refrigerant purity and
system contamination
Power tool Loosening bolts, screws and nuts
RJIA0197E
PIIB1407E
Revision: April 20092010 QX56

REFRIGERATION SYSTEMHA-21
< ON-VEHICLE MAINTENANCE >
C
DE
F
G H
J
K L
M A
B
HA
N
O P
1. Shut-off valve 2. A/C service valve3. Recovery/recycling equipment
4. Refrigerant container (HFC-134a) 5. Weight scale (J-39650) 6. Evacuating vacuum pump (J-39699)
7. Manifold gauge set (J-39183)
*1 HA-22, "
Maintenance of Oil Quantity
in Compressor"
*3HAC-111, "Performance Chart"*5 HA-4, "Contaminated Refrigerant"
*2HAC-108, "Component Function
Check"
*4HAC-109, "Diagnostic Work Flow"
WJIA1923E
Revision: April 20092010 QX56

OIL PUMPLU-17
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
J
K L
M A
LU
NP
O
2. Measure the inner diameter of oil pump body to brazed portion
(position 6) using suitable tool.
3. Calculate the clearance using the following formula. • (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)
Regulator Valve Clearance
Check regulator valve to oil pump cover clearance using the following formula.
• (Clearance) = D
1 (Valve hole diameter) - D2 (Outer Diameter of
valve)
CAUTION:
• Coat regulator valve with engine oil.
• Check that it falls smoothly into the regulator valve hole by its
own weight.
ASSEMBLY
Installation is in the reverse order of removal.
NOTE:
Install the inner rotor and outer rotor with the punched marks on the
oil pump cover side.
PBIC0142E
Inner rotor to brazed portion of housing
clearance
: 0.045 - 0.091 mm (0.0018 - 0.0036 in)
Regulator valve to oil pump cover
: 0.040 - 0.097 mm (0.0016 - 0.0038 in)
PBIC0143E
PBIC0144E
Revision: April 20092010 QX56

CHASSIS AND BODY MAINTENANCEMA-33
< ON-VEHICLE MAINTENANCE >
C
DE
F
G H
I
J
K L
M B
MA
N
O A
• If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode setting,
select and adjust a drive-in weight mode suitable for wheels.
1. Set wheel on wheel balancer using the center hole as a guide. Start the tire balance machine.
2. When inner and outer imbalance values are shown on t he wheel balancer indicator, multiply outer imbal-
ance value by 1.6 to determine balance weight that should be used. Select the outer balance weight with
a value closest to the calculated value and install it to the designated outer position of, or at the desig-
nated angle in relation to the road wheel.
CAUTION:
• Do not install the inner balance weight before installing the outer balance weight.
• Before installing the balance weight, be su re to clean the mating surface of the wheel.
Indicated imbalance value × 5/3 = balance weight to be installed
Calculation example:
23 g (0.81 oz) × 5/3 = 38.33 g (1.35 oz) = 40 g (1.41 oz) balance
weight (closer to calculated balance weight value)
Note that balance weight value must be closer to the calculated
balance weight value.
Example:
37.4 g = 35 g (1.23 oz)
37.5 g = 40 g (1.41 oz)
a. Install balance weight in the position shown.
b. When installing balance weight to wheels, set it into the grooved area on the inner wall of the wheel as shown so that the balance
weight center is aligned with the wheel balancer indication posi-
tion (angle).
CAUTION:
• Always use Genuine NISSAN adhesion balance weights.
• Balance weights are not reusable; always replace withnew ones.
• Do not install more than three sheets of balance weights.
c. If calculated balance weight value exceeds 50 g (1.76 oz), install two balance weight sheets in line with each other as shown.
CAUTION:
Do not install one balance weig ht sheet on top of another.
3. Start wheel balancer again.
4. Install drive-in balance weight on inner side of road wheel in the wheel balancer indication position (angle).
CAUTION:
Do not install more than two balance weights.
5. Start wheel balancer. Make sure that inner and outer residual imbalance values are 5 g (0.18 oz) each or below.
• If either residual imbalance value exceeds 5 g (0.18 oz),repeat installation procedures.
SMA054D
WDIA0060E
SMA056D
Revision: April 20092010 QX56

HEIGHT SENSOR SIGNAL CIRCUITSCS-23
< COMPONENT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
SCS
N
O P
HEIGHT SENSOR SIGNAL CIRCUIT
DescriptionINFOID:0000000005148181
Supplies vehicle height input to the suspension control unit.
Component Function CheckINFOID:0000000005148182
1.CHECK HEIGHT SENSOR OPERATION
CONSULT-III
1. Select "HEIGT SEN" of AIR L EVELIZER data monitor test item.
2. While monitoring test item, add or take away weight from the rear of the vehicle. Check that the voltage value changes with vehicle height.
Is the HEIGHT SEN data monitor responding normally?
YES >> Height sensor is operating normally.
NO >> Refer to SCS-23, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005148183
Regarding Wiring Diagram information, refer to SCS-29, "Wiring Diagram".
1.CHECK HEIGHT SENSOR POWER AND GROUND SUPPLY
Check height sensor power and ground supply. Refer to SCS-18, "
HEIGHT SENSOR : Diagnosis Procedure".
Are the inspection results normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK HEIGHT SENSOR SIGNAL CIRCUIT
1. Disconnect suspension control unit connector B3 and height sensor connector C8.
2. Check continuity between suspension control unit connector B3
(A) terminal 3 and height sensor connector C8 (B) terminal 2.
3. Check continuity between display unit harness connector B3 (A) terminal 3 and ground.
Are the continuity results as specified?
YES >> Replace the height sensor. Refer to RSU-27, "Removal and Installation".
NO >> Repair harness or connector. HEIGHT SEN : Voltage changes with vehicle height
AB
Continuity
Connector Terminal Connector Terminal
B33C 82 Y es
A —Contin u it y
Connector Terminal
B3 3Ground No
ALEIA0035GB
Revision: April 20092010 QX56

A/T CONTROL SYSTEMTM-9
< FUNCTION DIAGNOSIS >
CEF
G H
I
J
K L
M A
B
TM
N
O P
Cross-Sectional View (4WD models)INFOID:0000000005148508
Shift MechanismINFOID:0000000005148509
The automatic transmission uses compact triple planet ary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
1. Front planetary gear 2. Mid planetary gear 3. Rear planetary gear
4. Direct clutch 5. High and low reverse clutch 6. Reverse brake
7. Drum support 8. Forward brake 9. Low coast brake
10. Input shaft 11. Torque converter 12. Oil pump
13. Front brake 14. 3rd one-way clutch 15. Input clutch
16. 1st one-way clutch 17. Control valve with TCM 18. Forward one-way clutch
19. Adapter case 20. Output shaft
SCIA5268E
Revision: April 20092010 QX56

TM-144
< PRECAUTION >
PRECAUTIONS
•After performing each TROUBLE DIAGNOSIS, perform “DTC
(Diagnostic Trouble Code) CONFIRMATION PROCEDURE”.
If the repair is completed the DTC should not be displayed in the
“DTC CONFIRMATION PROCEDURE”.
• Always use the specified brand of ATF. Refer to MA-13, "
Fluids and Lubricants".
• Use paper rags not cloth rags during work.
• After replacing the ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.
• Before proceeding with disassembly, thoroughly clean the outside of the transmission. It is important to pre- vent the internal parts from becoming cont aminated by dirt or other foreign matter.
• Disassembly should be done in a clean work area.
• Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transmission.
• Place disassembled parts in order for easier and proper assembly.
• All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.
• Gaskets, seals and O-rings should be replaced any time the transmission is disassembled.
• It is very important to perform functional tests whenever they are indicated.
• The valve body contains precision parts and requires extreme care when parts are removed and serviced. Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs
and small parts from becoming scattered or lost.
• Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.
• Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings and
seals, or hold bearings and washers in place during assembly. Do not use grease.
• Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
• Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to TM-
152, "A/T Fluid Cooler Cleaning".
• After overhaul, refill the transmission with new ATF.
• When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque con- verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer to
TM-150, "
Changing the A/T Fluid (ATF)", TM-148, "Checking the A/T Fluid (ATF)".
Service Notice or PrecautionINFOID:0000000005148719
ATF COOLER SERVICE
• If A/T fluid contains fictional material (clutches, bands, etc.), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T fluid cooler mounted in the radiator or replace the radiator. Flush cooler lines with
cleaning solvent and compressed air after repair. For A/T fluid cooler cleaning procedure, refer to TM-152,
"A/T Fluid Cooler Cleaning". For radiator replacement, refer to CO-15, "Removal and Installation".
CHECKING AND CHANGING A/T FLUID
• Increase ATF oil temperature to 80 °C (176° F) first, then check and adjust oil level at 65 °C (149° F).
NOTE:
The A/T has both water cooling and air cooling systems . The air cooling system has a bypass valve. When
ATF oil temperature is at or below 50 °C (122° F), it does not flow through the air cooled system. If A/T oil
level is adjusted without flow throughout the entire system, the level will be 10mm lower than required.
Therefore, all piping should be filled with oil when adjusting level.
OBD-II SELF-DIAGNOSIS
• A/T self-diagnosis is performed by the TCM in combination with the ECM. Refer to the table on TM-32,
"CONSULT-III Function (TRANSMISSION)" for the indicator used to display each self-diagnostic result.
• The self-diagnostic results indicated by the MIL ar e automatically stored in both the ECM and TCM memo-
ries.
SEF217U
Revision: April 20092010 QX56

WT-48
< ON-VEHICLE REPAIR >
WHEEL AND TIRE ASSEMBLY
ON-VEHICLE REPAIR
WHEEL AND TIRE ASSEMBLY
Balancing WheelsINFOID:0000000005148246
Removal
1. Using releasing agent, remove double-faced adhesive tape from the wheel.CAUTION:
• Be careful not to scratch the wheel during removal.
• After removing double-faced adh esive tape, wipe clean traces of releasing agent from the wheel.
Wheel Balance Adjustment
• If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode setting,
select and adjust a drive-in weight mode suitable for wheels.
1. Set wheel on wheel balancer using the center hole as a guide. Start the tire balance machine.
2. When inner and outer imbalance values are shown on the wheel balancer indicator, multiply outer imbal- ance value by 1.6 to determine balance weight that should be used. Select the outer balance weight with
a value closest to the calculated value and install it to the designated outer posit ion of, or at the desig-
nated angle in relation to the road wheel.
CAUTION:
• Do not install the inner balance weight before installing the outer balance weight.
• Before installing the balance weight, be sure to clean the mating surface of the wheel.
Indicated imbalance value × 5/3 = balance weight to be installed
Calculation example:
23 g (0.81 oz) × 5/3 = 38.33 g (1.35 oz) = 40 g (1.41 oz) balance
weight (closer to calculated balance weight value)
Note that balance weight value must be closer to the calculated
balance weight value.
Example:
37.4 g = 35 g (1.23 oz)
37.5 g = 40 g (1.41 oz)
a. Install balance weight in the position shown.
b. When installing balance weight to wheels, set it into the grooved area on the inner wall of the wheel as shown so that the balance
weight center is aligned with the wheel balancer indication posi-
tion (angle).
CAUTION:
• Always use Genuine NISSAN ad hesion balance weights.
• Balance weights are not reusable; always replace with new ones.
• Do not install more than three sheets of balance weights.
SMA054D
WDIA0060E
Revision: April 20092010 QX56

WHEEL AND TIRE ASSEMBLYWT-49
< ON-VEHICLE REPAIR >
C
DF
G H
I
J
K L
M A
B
WT
N
O P
c. If calculated balance weight value exceeds 50 g (1.76 oz), install two balance weight sheets in line with each other as shown.
CAUTION:
Do not install one balance weig ht sheet on top of another.
3. Start wheel balancer again.
4. Install drive-in balance weight on inner side of road wheel in the wheel balancer indication position (angle).
CAUTION:
Do not install more than two balance weights.
5. Start wheel balancer. Make sure that inner and outer residual imbalance values are 5 g (0.18 oz) each or below.
• If either residual imbalance value exceeds 5 g (0.18 oz),repeat installation procedures.
Wheel balance (Maximum allowable imbalance):
RotationINFOID:0000000005148247
NOTE:
Follow the maintenance schedule for tire rotation service intervals. Refer to MA-6, "
General Maintenance" .
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.
Maximum allowable imbalance Dynamic (At rim flange) 5 g (0.18 oz) (one side)
Static
10 g (0.35 oz)
SMA056D
Wheel nut torque : 133 N·m (14 kg-m, 98 ft-lb)
SMA829C
Revision: April 20092010 QX56