INFINITI QX56 2010 Factory Service Manual

PRECAUTIONSST-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005399828
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005288074
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
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ST-4
< PRECAUTION >
PRECAUTIONS
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of a ll control units using CONSULT-III.
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PREPARATIONST-5
< PREPARATION >
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000005147857
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
HT72520000
(J-25730-A)
Ball joint remover Removing ball joint
KV40107300
(—)
Band clamp pliers Crimping boot clamps
1. KV48105300-4 and 5295262U10
(—
Connector A and O-ring
2. KV48105300-3 and 5295262U00
(—)
Eye-bolt and O-ring
3. KV48103500
(J-26357 and J-26357-10)
Pressure gauge and shut-off valve
4. KV48105300-1 and 5295262U00
(—)
Connector B and O-ring
5. KV48105300-2 —— )
Nut Measuring oil pump relief pressure
ST27180001
(J-25726-A)
Steering wheel puller Removing steering wheel
NT146
ZZA1229D
SGIA0427E
ZZA0819D
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ST-6
< PREPARATION >
PREPARATION
Commercial Service Tool
INFOID:0000000005147858
ST3127S000
(J-25765-A)
Preload gauge
1. GG9103000
(J-25765-A)
Torque wrench
2. HT62940000
(—)
Socket adapter
3. HT62900000
(—)
Socket adapter Inspecting sliding torque, steering torque and
rotating torque for ball joint
(—)
J-44372
Spring gauge Measure steering wheel turning force or rack
sliding force
Tool number
(Kent-Moore No.)
Tool name
Description
S-NT541
LST024
Tool name
Description
Power tool Removing nuts and bolts
PBIC0190E
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HEATED STEERING WHEELST-7
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
HEATED STEERING WHEEL
System DiagramINFOID:0000000005147859
System DescriptionINFOID:0000000005147860
The heated steering wheel switch controls the heated steeri ng relay. When the switch is turned on, the relay is
energized and the heated steering system will operate. T he heated steering system will turn off when the
steering wheel temperature reaches approximately 86 ° F (30 ° C). Heated steering system operation can also
be canceled by pressing the heated steering wheel switch again.
NOTE:
If the surface temperature of the steering wheel is below 68 ° F (20 ° C), the system will heat the steering wheel
to approximately 86 ° F (30 ° C), and cycle off and on to maintain a temperature above 68 ° F (20 ° C). The indi-
cator light will remain on as long as the system is on. Push the switch again to turn the heated steering wheel
system off manually. The indicator light will go off.
Component Parts LocationINFOID:0000000005147861
AWGIA0022GB
1. Heated steering relay M71 2. Combination switch (spiral cable) M52 3. Heated steering wheel M114
4. Heated steering wheel switch M260
ALGIA0030ZZ
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< FUNCTION DIAGNOSIS >
HEATED STEERING WHEEL
Component Description
INFOID:0000000005147862
Heated steering wheel switch • Controls the heated steering relay and operates the heated steering system.
• Turns the indicator lamp ON when the system is activated.
Heated steering relay • Operates the heated steering system with the control signal from the heated steering
wheel switch.
Heated steering wheel • Heats the heating element with the power supplied from the heated steering relay.
Revision: April 20092010 QX56

HEATED STEERING WHEELST-9
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
HEATED STEERING WHEEL
Wiring DiagramINFOID:0000000005147863
ABGWA0009GB
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ST-10
< COMPONENT DIAGNOSIS >
HEATED STEERING WHEEL
ABGIA0026GB
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HEATED STEERING WHEELST-11
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ABGIA0027GB
Revision: April 20092010 QX56

ST-12
< SYMPTOM DIAGNOSIS >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005147864
Use chart below to help you find the cause of the symp tom. If necessary, repair or replace these parts.
×: ApplicableReference page
ST-13, "
Checking Fluid Level
"
ST-13, "
Air Bleeding Hydraulic System
"
ST-36ST-36ST-36ST-13ST-35ST-37
EM-13, "
Checking Drive Belts
"
ST-35ST-35ST-37ST-35ST-20ST-37
DLN-184, "
NVH Troubleshooting Chart
"
DLN-208, "
NVH Troubleshooting Chart
"
FAX-5, "
NVH Troubleshooting Chart
"
FSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
FAX-5, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
Possible cause and suspect-
ed parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
FRONT FINAL DRIVE
WHEEL HUB
SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
Symptom
Noise
× × ××××× × × ××××××× ×
Shake ×××× ××××× ×
Vibration ××××× × ××× ×
Shimmy ××× × ×××× ×
Shudder × × ×××× ×
Revision: April 20092010 QX56