2011 INFINITI QX56 Factory Service Manual

service brakes bluetooth tires wiper size air suspension

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INFINITI QX56 2011 Factory Service Manual
PRECAUTIONSDLN-7
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5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push

PRECAUTIONSDLN-7
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5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of a ll control units using CONSULT-III.
Service Notice or Precautions for TransferINFOID:0000000006222211
CAUTION:
Use Genuine NISSAN Transfer Fluid. Refer to MA-10, "
Fluids and Lubricants".
Never reuse transfer fluid, once it has been drained.
Check the fluid level or repl ace the fluid only with the vehicle parked on level ground.
During removal or installati on, keep inside of transfer clear of dust or dirt.
Replace all tires at the same time. Always use tir es of the proper size and the same brand and pat-
tern. Fitting improper size and unusually worn tires applies excessive force to vehicle mechanism
and can cause longitudinal vibration.
Disassembly should be done in a clean work area, it is preferable to work in dustproof area.
Before proceeding with disassembly, thoroughly clean the transfer. It is important to prevent the
internal parts from becoming contamin ated by dirt or other foreign matter.
All parts should be carefully cl eaned with a general purpose, non-flammable solvent before inspec-
tion or reassembly.
Check for the correct installation status prior to removal or disassembly. If matching marks are
required, be certain they do not interfere wit h the function of the parts when applied.
Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace
them with a new ones if necessary.
Gaskets, seals and O-rings should be replaced any time the transfer is disassembled.
In principle, tighten bolts or nu ts gradually in several steps workin g diagonally from inside to out-
side. If tightening sequence is specified, use it.
Observe the specified torque when assembling.
Clean and flush the parts su fficiently and blow-dry them.
Be careful not to damage sliding surfaces and mating surfaces.
Clean inner parts with lint-free cloth or towels . Do not use cotton work gloves and rags to prevent
adhering fibers.
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
DLN-8
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PREPARATION
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000006222212
The actual shapes of Kent-Moore tool
s may differ from those of special servic

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INFINITI QX56 2011 Factory Service Manual
PREPARATIONDLN-9
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Drift
a: 63 mm (2.48 in) dia.
b: 59 mm (2.32 in) dia. Installing front oil seal
Power tool Loosening bolts and nut

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INFINITI QX56 2011 Factory Service Manual
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COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006222214
1. ECM
Refer to EC-16, "
Component Parts
Location"

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COMPONENT PARTSDLN-11
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Component DescriptionINFOID:0000000006222215
Transfer Control UnitINFOID:0000000006222216
Transfer c

COMPONENT PARTSDLN-11
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Component DescriptionINFOID:0000000006222215
Transfer Control UnitINFOID:0000000006222216
Transfer control unit operates transfer control act uator, 4WD warning lamp and 4WD mode indicator lamp
according to input signal from 4WD shift switch and each sensor and control unit.
When 4WD system is malfunctioning, 4WD warning la mp turns ON and fail-safe status activates.
When protection is necessary, 4WD warning la mp blinks and protection status activates.
Transfer Control ActuatorINFOID:0000000006222217
Transfer control actuator integrates transfer motor, transfer internal position sensor, and transfer motor tem-
perature sensor, and switches 4WD mode (AUTO ⇔4H ⇔4L).
TRANSFER MOTOR
Transfer motor operates according to signal from transfer control unit and switches 4WD mode
(AUTO ⇔4H ⇔4L). It also performs front and rear distri bution of traction force during AUTO mode.
TRANSFER INTERNAL SPEED SENSOR
Transfer internal speed sensor detects rotation status of transfer motor and transmits signal to transfer control
unit.
TRANSFER MOTOR TEMPERATURE SENSOR
Transfer motor temperature sensor m easures temperature of transfer motor.
Component parts Reference/Function
Transfer control unit DLN-11, "
Transfer Control Unit"
Transfer control actua-
torTransfer motor
DLN-11, "
Transfer Control Actuator"
Transfer internal speed
sensorDLN-11, "Transfer Control Actuator"
Transfer motor temper-
ature sensor
DLN-11, "Transfer Control Actuator"
Transfer Hi-Lo position sensor
DLN-12, "Transfer Hi-Lo Position Sensor"
Transfer rotary position sensorDLN-12, "Transfer Rotary Position Sensor"
Transfer lock position sensorDLN-12, "Transfer Lock Position Sensor"
Transfer fluid temperature sensorDLN-12, "Transfer Fluid Temperature Sensor"
4WD mode switchDLN-18, "4WD SYSTEM : System Description"
4WD indicator lampDLN-18, "4WD SYSTEM : System Description"
4WD warning lampDLN-18, "4WD SYSTEM : System Description"
AT P w a r n i n g l a m pDLN-18, "4WD SYSTEM : System Description"
ABS actuator and electric unit (control unit)Transmits the following signals via CAN communication line to transfer control unit.
Vehicle speed signal (ABS)
Stop lamp switch signal (brake signal)
ABS operation signal
VDC operation signal
TCS operation signal
Steering angle sensor Transmits the following signals via CAN communication line to transfer control unit.
Steering angle sensor signal
ECM Transmits the following signals via CAN communication line to transfer control unit.
Accelerator pedal position signal
Engine speed signal
Engine torque signal
TCM Transmits the following signals via CAN communication line to transfer control unit.
Shift position signal
Gear position signal
Output shaft revolution signal
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
DLN-12
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COMPONENT PARTS
This sensor uses a thermistor and its electrical resi
stance varies as the temperature varies. The electrical
resistance decreases as

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STRUCTURE AND OPERATIONDLN-13
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STRUCTURE AND OPERATION
Sectional ViewINFOID:0000000006222222
Torque Split MechanismINFOID:000

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DLN-14
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STRUCTURE AND OPERATION
DESCRIPTION
Ball ramp lever operates in the direction of main shaft axis according to rotation of actuator shaft and
presses

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