2011 INFINITI QX56 oil level

FRONT OIL SEALDLN-159
< REMOVAL AND INSTALLATION > [FRONT FINAL DRIVE: R180A]
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3. Apply anti-corrosion oil to the thread and seat of new drive pin- ion lock nut, and temporarily tighten drive pinion lock nut to drive
pinion, using flange wrench (commercial service tool).
CAUTION:
Never reuse drive pinion lock nut.
4. Tighten drive pinion lock nut within the limits of specified torque so as to keep the pinion bearing preload within a standard val-
ues, using preload gauge (A) [SST: ST3127S000 (J-25765-A)].
CAUTION:
 Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.
 If the preload torque exceeds the specified value, replace collapsible spacer and tighte n it again to adjust. Never
loosen drive pinion lock nut to adjust the preload torque.
5. Fit a dial indicator onto the companion flange face (inner side of the propeller shaft mounting bolt holes).
6. Rotate the companion flange to check for runout.
7. Fit a test indicator to the inner side of the companion flange (socket diameter).
8. Rotate the companion flange to check for runout.
9. If the runout value is outside the repair limit, follow the procedure below to adjust.
a. Check for runout while changing the phase between companion flange and drive pinion gear by 90 ° step,
and search for the position where the runout is the minimum.
b. If the runout value is still outside of the limit after the phase has been changed, possible causes are be an
assembly malfunction of drive pinion and pinion bear ing and malfunction of pinion bearing. Check for
these items and repair if necessary.
c. If the runout value is still outsi de of the limit after the check and repair, replace companion flange.
10. Install front propeller shaft. Refer to DLN-129, "
Removal and Installation".
11. Install drive shaft. Refer to FAX-22, "
Removal and Installation".
12. Refill gear oil to the final drive and check oil level. Refer to DLN-155, "
Refilling".
13. Check the final drive for oil leakage. Refer to DLN-155, "
Inspection".
Total preload torque: A value
that add 0.1 – 0.4 N·m
(0.01 – 0.04 kg-m, 1 – 3 in-lb) to
the measured value when re-
moving.
PDIA1003E
Companion flange runout : Refer to DLN-185, "Com-
panion Flange Runout".
Companion flange runout : Refer to DLN-185, "
Com-
panion Flange Runout".
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Revision: 2010 May2011 QX56

SIDE OIL SEALDLN-161
< REMOVAL AND INSTALLATION > [FRONT FINAL DRIVE: R180A]
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2. Install drive shaft. Refer to FAX-22, "Removal and Installation".
3. Refill gear oil to the final drive and check oil level. Refer to DLN-155, "
Refilling".
4. Check the final drive for oil leakage. Refer to DLN-155, "
Inspection".
Revision: 2010 May2011 QX56

FRONT FINAL DRIVE ASSEMBLYDLN-163
< UNIT REMOVAL AND INSTALLATION > [FRONT FINAL DRIVE: R180A]
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 Install the breather hose (1) as shown in the figure.
- Install the breather hose (1) of final side with the paint mark (A) facing vehicle front, and insert the breather hose until dimension
(B) shown as follows.
CAUTION:
 Never reuse hose clamp.
 Install the hose clamp with th e tab facing vehicle front.
- Be sure to fix the breather hose in (C) position.
 If remove the bracket (2), align stopper part (D) to part (E) of sus-
pension mounting bracket (3), and tighten the mounting bolt (4) to
specified torque.
 When oil leaks while removing final drive assembly, check oil level after the installation. Refer to DLN-142, "
Inspection".
: Vehicle front
B: 20 mm (0.79 in)
Specified torque: 8.3 Nm (0.85 kg-m, 73 in-lb)
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Revision: 2010 May2011 QX56

REAR DIFFERENTIAL GEAR OILDLN-193
< PERIODIC MAINTENANCE > [REAR FINAL DRIVE: R230]
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PERIODIC MAINTENANCE
REAR DIFFERENTIAL GEAR OIL
InspectionINFOID:0000000006222411
OIL LEAKAGE
Check that differential gear oil is not leaking fr om the rear final drive assembly or around it.
OIL LEVEL
 Remove filler plug (1) and check oil level from filler plug mounting
hole as shown in the figure.
CAUTION:
Never start engine while checking oil level.
 Set a gasket on filler plug (1) and install it on final drive assembly. Refer to DLN-203, "
Exploded View".
CAUTION:
Never reuse gasket.
DrainingINFOID:0000000006222412
1. Stop the engine.
2. Remove drain plug (1) and drain gear oil.
3. Set a gasket on drain plug (1) and install it to final drive assem- bly and tighten to the specified torque. Refer to DLN-203,
"Exploded View".
CAUTION:
Never reuse gasket.
RefillingINFOID:0000000006222413
1. Remove filler plug (1). Fill with new gear oil until oil level reaches the specified level near filler plug mounting hole.
2. After refilling oil, check oil level. Set a gasket to filler plug (1), then install it to final drive assembly. Refer to DLN-203,
"Exploded View".
CAUTION:
Never reuse gasket.
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Oil grade and viscosity : Refer to MA-10, "Fluids and
Lubricants".
Oil capacity : Refer to DLN-222, "
General
Specification".
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Revision: 2010 May2011 QX56

DLN-198
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
FRONT OIL SEAL
- If the runout value is still outside of the limit
after the phase has been changed, possible cause will be an
assembly malfunction of drive pinion and pinion bearing and malfunction of pinion bearing. Check for
these items and repair if necessary.
- If the runout value is still outside of the limit after the check and repair, replace companion flange.
7. Make a stamping for identification of front oil seal replacement frequency. Refer to “Identification stamp of
replacement frequency of front oil seal”.
CAUTION:
Make a stamping after replacing front oil seal.
8. Install rear propeller shaft. Refer to DLN-144, "
Removal and Installation".
9. Install side flange with the following procedure.
a. Attach the protector [SST: KV38108000 ( — )] to side oil seal.
b. After the side flange is inserted and the serrated part of side gear has engaged the serrated part of flange, remove the pro-
tector.
c. Put a suitable drift on the center of side flange, then drive it until sound changes.
NOTE:
When installation is completed, driving sound of the side flange
turns into a sound that seems to affect the whole final drive.
d. Confirm that the dimension of the side flanges (1) installation measurement (A) in the figure comes into the following.
10. Install drive shaft. Refer to RAX-11, "
Removal and Installation".
11. Refill gear oil to the final drive and check oil level. Refer to DLN-
193, "Refilling".
12. Check the final drive for oil leakage. Refer to DLN-193, "
Inspec-
tion".
SDIA0822E
A : 342.2 mm (13.47 in)
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Revision: 2010 May2011 QX56

DLN-200
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
SIDE OIL SEAL
1. Install side oil seal until it becomes flush with the case end,
using the drift (A) [SST: ST35271000 (J-26091)].
CAUTION:
 Never reuse side oil seal.
 Never incline the new side oil seal when installing.
 Apply multi-purpose grease to the lips of the new side oil
seal.
2. Install the side flange with the following procedure.
a. Install the protector [SST: KV38108000 ( — )] to the side oil seal as shown.
b. Insert the side flange until the se rrated part of the side flange
has engaged the serrated part of the side gear and remove the
Tool.
c. Drive in the side flange using suitable tool. NOTE:
Installation is completed when the driving sound of the side
flange turns into a sound which seems to affect the whole rear
final drive assembly.
d. Confirm that the dimension of the side flanges (1) installation measurement (A) in the figure comes into the following.
3. Install drive shaft. Refer to RAX-11, "
Removal and Installation".
4. Refill gear oil to final drove and check oil level. Refer to DLN-
193, "Refilling".
5. When oil leaks while removing, check oil level after the installa- tion. Refer to DLN-193, "
Inspection".
PDIA1008E
SDIA0822E
A : 342.2 mm (13.47 in)
JSDIA0185ZZ
Revision: 2010 May2011 QX56

DLN-202
< UNIT REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
5. Set a suitable jack to rear final drive assembly.
CAUTION:
Never place a jack under the rear cover (aluminum case).
6. Remove the mounting bolts and nuts connecting to the suspen- sion member with power tool. And then, remove rear final drive
assembly.
CAUTION:
Secure rear final drive assembly to a suitable jack while
removing it.
INSTALLATION
Note the following, and installation is in the reverse order of removal.
CAUTION:
Check that there are no pinched or restricted areas on the breather hose caused by bending or wind-
ing when installing it.
 In (A) position, install the breather hose (1) until dimension (D) shown as follows.
CAUTION:
 Never reuse hose clamp.
 Install the hose clamp, wit h the tab facing downward.
 In (B) position, install the breather hose (2) until hose reaches the
plane tube surface connector.
CAUTION:
 Never reuse hose clamp.
 Install the hose clamp, with the tab facing righ tward and upward direction of the vehicle at 45°.
 In (C) position, install the breather hose (2) until dimension (E) shown as follows.
 Install breather hose (1) and (2), breather tube (3) and metal con- nector (4) as shown in the figure.
- Fix breather hose (2) with clip in (A) position CAUTION:
Never reuse clip.
- Install metal connector (4) to rear cover with a part to insert breather hose with facing vehicle left.
CAUTION:
Never reuse metal connector.
- Fix a point with paint mark (B) of breather tube (3) in (C) position.
- Fix breather tube (3) in (D) position.
 When oil leaks while removing final drive assembly, check oil level after the installation. Refer to DLN-193, "
Inspection".
JSDIA0132ZZ
: Vehicle front
D : 20 mm (0.79 in)
E : 20 mm (0.79 in)
: Vehicle front
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Revision: 2010 May2011 QX56

EC-1
ENGINE
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SECTION EC
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CONTENTS
ENGINE CONTROL SYSTEM
VK56VD
PRECAUTION ................ ...............................
9
PRECAUTIONS .............................................. .....9
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
9
Precaution for Procedure without Cowl Top Cover ......9
Precautions For Xenon Headlamp Service ...............9
On Board Diagnostic (OBD) System of Engine
and A/T ....................................................................
10
General Precautions ...............................................10
PREPARATION ...........................................14
PREPARATION .............................................. ....14
Special Service Tools .......................................... ....14
Commercial Service Tools ......................................14
SYSTEM DESCRIPTION .............................16
COMPONENT PARTS ................................... ....16
Component Parts Location .................................. ....16
Component Description ...........................................19
Accelerator Pedal Position Sensor ..........................21
Air Fuel Ratio (A/F) Sensor 1 ..................................21
ASCD Brake Switch & Stop Lamp Switch ...............21
ASCD Steering Switch ............................................21
ASCD Indicators ......................................................21
Battery Current Sensor (With Battery Tempera-
ture Sensor) ............................................................
22
Camshaft Position Sensor .......................................22
Crankshaft Position Sensor .....................................23
ECM ........................................................................23
Electric Throttle Control Actuator ............................23
Electrically-controlled cooling fan coupling .............24
Engine Coolant Temperature Sensor ......................25
Engine Oil Temperature Sensor ..............................25
EVAP Control System Pressure Sensor .................26
EVAP Canister Vent Control Valve .........................26
EVAP Canister Purge Volume Control Solenoid
Valve .................................................................... ....
26
Fuel Injector .............................................................26
Fuel Level Sensor ....................................................26
Fuel Pump Control Module ......................................27
Fuel Rail Pressure Sensor .......................................27
Fuel Tank Temperature Sensor ...............................27
Heated Oxygen Sensor 2 ........................................27
High Pressure Fuel Pump .......................................28
ICC Brake Switch & Stop Lamp Switch ...................29
ICC Steering Switch ................................................29
Ignition Coil With Power Transistor .........................29
Intake Valve Timing Control Solenoid Valve ...........29
Knock Sensor ...................................................... ....30
Low Fuel Pressure Sensor ......................................30
Low Pressure Fuel Pump ........................................30
Malfunction Indicator Lamp (MIL) ............................30
Manifold Absolute Pressure Sensor ........................31
Mass Air Flow Sensor (With Intake Air Tempera-
ture Sensor) .............................................................
31
Power Steering Pressure (PSP) Sensor ..................31
Refrigerant Pressure Sensor ............................... ....32
VVEL Actuator Motor ...............................................32
VVEL Actuator Motor Relay .....................................32
VVEL Control Module ..............................................32
VVEL Control Shaft Position Sensor .......................32
STRUCTURE AND OPERATION .....................33
Positive Crankcase Ventilation ................................33
On Board Refueling Vapor Recovery (ORVR) ........34
SYSTEM ............................................................35
ENGINE CONTROL SYSTEM ........................ ...........35
ENGINE CONTROL SYSTEM : System Diagram ....35
ENGINE CONTROL SYSTEM : System Descrip-
tion ...........................................................................
35
DIRECT INJECTION GASOLINE SYSTEM .......... ....36
DIRECT INJECTION GASOLINE SYSTEM :
System Diagram .....................................................
36
Revision: 2010 May2011 QX56