upper INFINITI QX56 2010 Factory User Guide

CO-16
< ON-VEHICLE REPAIR >
RADIATOR
5. Disconnect the radiator lower hose from the radiator.CAUTION:
Do not allow coolant to contact drive belts.
6. Remove the lower radiator shroud. • Release the tabs, pull lower radiator shroud rearwards anddown to remove.
7. Disconnect the radiator upper hose and the coolant reservoir hose from the radiator. CAUTION:
Do not allow coolant to contact drive belt.
8. Remove the radiator shroud upper bolts and remove the radiator shroud upper (A).
9. Remove the upper radiator mounting bolts and rubbers.
10. Remove the A/C condenser bolts and brackets. NOTE:
Lift A/C condenser up and forward to remove from radiator.
11. Remove A/T oil cooler bolts and oil cooler from radiator and position aside.
WBIA0407E
WBIA0695E
WBIA0395E
WBIA0396E
Revision: April 20092010 QX56

CO-18
< ON-VEHICLE REPAIR >
ENGINE COOLING FAN
ENGINE COOLING FAN
Exploded ViewINFOID:0000000005149046
Crankshaft Driven Type
Removal and Installation (Crankshaft Driven Type)INFOID:0000000005149047
REMOVAL
1. Partially drain engine coolant from the radiator. Refer to CO-11, "Changing Engine Coolant".
2. Remove the lower and upper radiator shrouds. Refer to CO-15, "
Exploded View".
3. Remove the drive belt. Refer to EM-13, "
Removal and Installation".
4. Remove the cooling fan.
5. Remove the fan bracket, if necessary.
INSPECTION AFTER REMOVAL
Fan Coupling
• Inspect fan coupling for oil leakage and bimetal conditions.
• If there are any unusual concerns, replace the fan coupling.
Fan Bracket
• Visually check that there is no significant looseness in the fan bracket shaft, and that it turns smoothly by hand.
• If there are any unusual concerns, replace the fan bracket.
Cooling Fan Pulley
• Inspect cooling fan pulley.
• If there are any unusual concerns, replace the cooling fan pulley.
AWBIA0812GB
1. Cooling fan 2. Fan coupling3. Fan bracket
4. Cooling fan pulley A. Front mark Engine front
SLC072
WBIA0418E
Revision: April 20092010 QX56

DLK-106
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY BATTERY AND FUNCTION
INTELLIGENT KEY BATTERY AND FUNCTION
DescriptionINFOID:0000000005146975
The following functions are available when having and carrying electronic ID.
• Door lock/unlock
• Back door open
Remote control entry function and panic alarm functi
on are available when operating the remote buttons.
Component Function CheckINFOID:0000000005146976
1.CHECK FUNCTION
With CONSULT-III
Check remote keyless entry receiver "RKE OPE COUN1" in DATA MONITOR mode with CONSULT-III.
Is the inspection result normal?
YES >> Intelligent Key is OK.
NO >> Refer to DLK-106, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146977
1.CHECK INTELLIGENT KEY FUNCTION
Check keyfob function using Remote Keyless Entry Tester J-43241.
Does the test pass?
YES >> Intelligent Key is OK.
NO >> GO TO 2
2. CHECK INTELLIGENT KEY COMPONENTS
1. Release the lock knob at the back of the Intelligent Key and remove the mechanical key.
2. Insert a flat-blade screwdriver (A) wrapped with a cloth into the slit of the corner and twist it to separate the upper part from the
lower part.
CAUTION:
• Do not touch the circuit board or battery terminal.
• The keyfob is water-resistant. However, if it does get wet,
immediately wipe it dry.
3. Remove the Intelligent Key battery.
CAUTION:
• Keep dirt, grease, and other fo reign materials off the elec-
trode contact area.
4. Visually inspect keyfob internal components.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning parts.
3.CHECK INTELLIGENT KEY BATTERY
Monitor item Condition
RKE OPE COUN1 Check that the numerical value is changing while operating the Intelligent Key.
LEL946A
PIIB6221E
Revision: April 20092010 QX56

INTELLIGENT KEY BATTERY AND FUNCTIONDLK-107
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Check by connecting a resistance (approximately 300 Ω) so that the
current value becomes about 10 mA.
Is the measurement val ue within specification?
YES >> Intelligent Key battery is OK. Check remote keyless
entry receiver. Refer to DLK-103,
"ComponentFunctionCheck".
NO >> GO TO 4
4. REPLACE INTELLIGENT KEY BATTERY
1. Replace the Intelligent Key battery.
2. Align the tips of the upper and lower parts, and then push them together until it is securely closed.
CAUTION:
• When replacing battery, keep dirt, grease, and other for-eign materials off the electrode contact area.
3. After replacing the battery, check that all Intelligent Key func- tions work properly.
Is the inspection result normal?
YES >> Intelligent Key is OK.
NO >> Check remote keyless entry receiver. Refer to DLK-103,
"ComponentFunctionCheck".
Standard : Approx. 2.5 - 3.0V
OCC0607D
PIIB6222E
Revision: April 20092010 QX56

HOOD
DLK-235
< ON-VEHICLE REPAIR > [WITH INTELLIGENT KEY SYSTEM]
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DLK
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Removal and Installation of Hood Lock ControlINFOID:0000000005147052
REMOVAL
1. Remove the bolts and the hood lock assembly.
2. Remove the front fender protector (LH). Refer to EXT-23, "
Removal and Installation".
3. Disconnect the hood lock primary and secondary hood lock cables from the hood lock. Unclip the primary
cable from the radiator core support upper and hood ledge.
4. Remove the nuts and the secondary hood lock release assembly.
5. Remove the grommet from the dash lower, and pull the primary hood lock cable into the passenger room. CAUTION:
While pulling, be careful not to dama ge the outside of the hood lock cable.
INSTALLATION
1. Pull the hood lock cable through the dash lower hole into the engine room.
Be careful not to bend the cable too much, keeping the radius
100mm (3.94 in) or more.
2. Make sure the cable is not of fset from the positioning grommet,
and push the grommet into the dash lower hole securely.
3. Apply sealant around the grommet at * mark.
1. Hood lock assembly 2. Secondary hood lock release as-
sembly 3. Secondary hood lock cable
4. Primary hood lock cable 5. Grommet6. Hood lock release handle
WIIA0900E
PIIA0173E
Revision: April 20092010 QX56

BACK DOOR LOCKDLK-247
< ON-VEHICLE REPAIR > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR LOCK
Power Back Door OpenerINFOID:0000000005147061
Removal
1. Disconnect the battery negative terminal. Refer to PG-74, "Removal and Installation".
2. Remove the LH luggage side upper. Refer to INT-19, "
Removal and Installation".
3. Disconnect the power back door motor electrical connector.
4. Disconnect the ball socket from the back door.
5. Remove the power back door motor assembly.
Installation
Installation is in the reverse order of removal.
WIIA0893E
Revision: April 20092010 QX56

DLN-158
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
a. Remove all the bolts except for the two shown.
b. Remove the following from the control valve assembly:
• Clutch pressure solenoid valve
• Clutch pressure switch
• 2-4WD shift solenoid valve
• Line pressure switch
• Transfer fluid temperature sensor
c. Remove the O-rings from each solenoid valve, switch and termi- nal body.
d. Place the control valve with the lower body facing up. Remove the two bolts, and then remove the lower body and separator
plate from the upper body.
CAUTION:
Do not drop relief balls. Detach lower body carefully.
e. Make sure the reverse balls, relief balls, relief springs, accumu- lator pistons and valve springs are securely installed as shown,
and remove them.
f. Remove the retainer plates.
WDIA0198E
WDIA0199E
WDIA0200E
SDIA2126E
SDIA2127E
Revision: April 20092010 QX56

TRANSFER ASSEMBLYDLN-159
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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g. Remove each retainer plate (1), plug (2), control valve (3) and spring (4) from the upper body (5).
INSPECTION AFTER DISASSEMBLY
Shift Rod Components
• Check the working face of the shift rod and fork for wear, partialwear, bending and other abnormality. If any is found, replace with a
new one.
• Measure the clearance between the shift fork and sleeve. If it is out of specification, replace it with a new one.
Planetary Carrier
• Measure the end play of each pinion gear. If it is out of specifica-tion, replace the planetary carrier assembly with a new one.
• Check the working face of each gear and bearing for damage, burrs, partial wear, dents and other abnormality. If any is found,
replace the planetary carrier assembly with a new one.
Sun Gear
WDIA0284E
SMT009D
Specification : Less than 0.36 mm (0.0142 in)
SMT010D
Pinion gear end play : 0.1 - 0.7 mm (0.004 - 0.028 in)
PDIA0185E
Revision: April 20092010 QX56

DLN-162
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
• Check each control valve spring for damage or distortion. Also
check its free length, outer diameter and wire diameter. If any dam-
age or fatigue is found, replace the control valve body with a new
one. Refer to DLN-142, "
Disassembly and Assembly".
CAUTION:
Replace control valve body togeth er with clutch return spring
as a set.
Clutch
• Check the drive plate facings and driven plate for damage, cracks or other abnormality. If any abnormalities are found, replace with a
new one.
• Check the thickness of the drive plate facings and driven plate.
Refer to DLN-179, "
Inspection and Adjustment".
CAUTION:
• Measure facing thickness at 3 points to take an average.
• Check all drive and driven plates.
• Check return spring for damage or deformation.
• Do not remove spring from plate.
Return Spring
• Check the stamped mark shown. T hen, check that the free lengths,
(include thickness of plate) are within specifications. If any abnor-
mality is found, replace with a new return spring assembly of the
same stamped number. Refer to DLN-179, "
Inspection and Adjust-
ment".
ASSEMBLY
Control Valve Assembly
1. Assemble the control valve assembly with the following procedure.
CAUTION:
• Do not reuse any part that has been dropped or damaged.
• Make sure valve is assembled in the proper direction.
• Do not use a magnet because residual magnetism stays during assembly.
a. Clean the upper body (5), control valves (3) and springs (4) with cleaning agent, and dry with compressed air.
b. Dip the control valves in ATF, and apply ATF to the valve-mount- ing area of the upper body.
SMT948C
SMT949C
SDIA2176E
WDIA0284E
Revision: April 20092010 QX56

TRANSFER ASSEMBLYDLN-163
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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c. Install each control valve (3), springs (4), and plugs (2) to the upper body (5), and install retainer plates (1) to hold them in
place.
CAUTION:
• To insert control valves into upper body, place upper
body on a level surface in order to prevent flaw or dam-
age.
• Make sure each control valve is smoothly inserted.
d. Install the reverse balls, relief balls and relief springs, accumula- tor pistons and valve springs to the upper body.
e. Install the lower body and separator plate to the upper body. CAUTION:
Do not reuse separator plates.
f. With the lower body down, tighten the two bolts shown.
g. Apply ATF to the new O-rings, and install them to each solenoid valve, switch and terminal body.
CAUTION:
Do not reuse O-rings.
h. Install the following to the control valve assembly: • Clutch pressure solenoid valve
• Clutch pressure switch
• 2-4WD shift solenoid valve
• Line pressure switch
• Transfer fluid temperature sensor
Center Case
SDIA2127E
SDIA2126E
WDIA0200E
WDIA0198E
Revision: April 20092010 QX56