battery INFINITI QX56 2010 Factory Service Manual

RSU-1
SUSPENSION
C
DF
G H
I
J
K L
M
SECTION RSU
A
B
RSU
N
O PCONTENTS
REAR SUSPENSION
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution for Rear Suspension ......................... ......3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Commercial Service Tool .................................... ......4
SYMPTOM DIAGNOSIS ...............................5
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
5
NVH Troubleshooting Chart ................................ ......5
ON-VEHICLE MAINTENANCE .....................6
REAR SUSPENSION ASSEMBLY ................ .....6
On-Vehicle Inspection and Service ..................... ......6
Wheel Alignment Inspection ......................................6
ON-VEHICLE REPAIR ..................................9
REAR SUSPENSION ASSEMBLY ................ .....9
Component .......................................................... ......9
REMOVAL AND INSTALLATION ...............11
REAR SUSPENSION MEMBER .................... ....11
Removal and Installation .........................................11
SHOCK ABSORBER ........................................15
Removal and Installation ..................................... ....15
Disposal ...................................................................15
SUSPENSION ARM ..........................................17
Removal and Installation .........................................17
FRONT LOWER LINK .......................................19
Removal and Installation .........................................19
REAR LOWER LINK & COIL SPRING .............21
Removal and Installation .........................................21
STABILIZER BAR .............................................23
Removal and Installation .........................................23
REAR LOAD LEVELING AIR SUSPENSION
COMPRESSOR ASSEMBLY ............................
24
Removal and Installation .........................................24
CONTROL UNIT ................................................26
Removal and Installation .........................................26
Initialization Procedure ............................................26
HEIGHT SENSOR .............................................27
Removal and Installation .........................................27
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
29
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
29
Wheel Alignment ................................................. ....29
Ball Joint ..................................................................29
Wheelarch Height (Unladen*1) ................................30
Revision: April 20092010 QX56

RSU-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005215839
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity 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 inopera tive, 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 unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005215840
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 disconnecting 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 pow er 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.
Revision: April 20092010 QX56

PRECAUTIONSRSU-3
< PRECAUTION >
C
DF
G H
I
J
K L
M A
B
RSU
N
O P
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 al l control units using CONSULT-III.
Precaution for Rear SuspensionINFOID:0000000005148126
• When installing the rubber bushings, the final tightening must be done under unladen condition and with the
tires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare
tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Caulking nuts are not reusable. Always use new caulking nuts for installation. New caulking nuts are pre- oiled, do not apply any additional lubrication.
Revision: April 20092010 QX56

RSU-26
< REMOVAL AND INSTALLATION >
CONTROL UNIT
CONTROL UNIT
Removal and InstallationINFOID:0000000005148139
REMOVAL
1. Remove the luggage side finisher lower LH. Refer to INT-19, "Removal and Installation".
2. Disconnect the battery negative terminal.
3. Disconnect the suspension control unit electrical connector.
4. Remove the two bolts and remove the suspension control unit.
INSTALLATION
Installation is in the reverse order of removal.
Initialization ProcedureINFOID:0000000005148140
1. If control unit has been replaced, proceed to step 2. If control unit has not been replaced, use CONSULT-
III “CLEAR HEIGHT INI” work support function to clea r initialization flag and value. The CK SUSP warning
lamp should illuminate. Using CONSULT-III “EXHAUST SOLENOID” active test, release the air pressure
from the rear load leveling air suspension system.
2. Roll vehicle forward and backward.
3. Use CONSULT-III “ADJUST HEIGHT INI” work support function to set initialization condition.
4. Confirm that CK SUSP warning lamp is OFF.
LEIA0100E
Suspension control unit bolts : 6 N·m (0.6 kg-m, 53 in-lb)
Revision: April 20092010 QX56

SB-1
RESTRAINTS
C
DE
F
G
I
J
K L
M
SECTION SB
A
B
SB
N
O P
CONTENTS
SEAT BELT
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution for Seat Belt Service ...............................2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
3
ON-VEHICLE REPAIR ..................................4
SEAT BELTS .......................................................4
Removal and Installation of Front Seat Belt ........ .....4
Removal and Installation of Second Row Seat Belt
.....
7
Removal and Installation of Third Row Seat Belt .....8
Seat Belt Inspection ............................................. ....11
LATCH (LOWER ANCHORS AND TETHER
FOR CHILDREN) SYSTEM ...............................
14
Removal and Installation .........................................14
TOP TETHER STRAP CHILD RESTRAINT .....15
Removal and Installation .........................................15
Revision: April 20092010 QX56

SB-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005266525
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity 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 inopera tive, 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 unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minu tes before performing any service.
Precaution for Seat Belt ServiceINFOID:0000000005266526
CAUTION:
• Before removing the seat belt pre-tensioner assembl y, turn the ignition switch OFF, disconnect both
battery terminals and wait at least three minutes. For approximately three minutes after the battery
terminals have been removed, it is still possible for the air bag and seat belt pretensioner to deploy.
Therefore, do not attempt work on any SRS connectors or wires until at least three minutes have
passed.
• After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten- sioner assembly connector, make sure entire SRS operates properly. Refer to SRC-13, "
SRS Opera-
tion Check".
• Do not disassemble buckle or seat belt assembly.
• Replace anchor bolts if th ey are deformed or worn out.
• Never oil tongue and buckle.
• If any component of seat belt assembly is questionable, do not re pair. Replace the whole seat belt
assembly.
• If webbing is cut, frayed, or damaged, replace seat belt assembly.
• When replacing seat belt assembly, use a genuine NISSAN seat belt assembly.
AFTER A COLLISION
WARNING:
• Inspect all seat belt assemblies including retract ors and attaching hardware after any collision.
• NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the
collision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an acci dent. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or im proper operation is noted. Seat belt pre-tensioner
Revision: April 20092010 QX56

PRECAUTIONSSB-3
< PRECAUTION >
C
DE
F
G
I
J
K L
M A
B
SB
N
O P
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly (including anchor bolts) if:
• The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
buckles show no damage and continue to operate properly).
• The seat belt was damaged in an accident. (i.e., torn webbing, bent retractor or guide, etc.)
• The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage
or distortion and repair as necessary before installing a new seat belt assembly.
• Anchor bolts are deformed or worn out.
• The seat belt pre-tensioner should be replaced even if t he seat belts are not in use during the collision in
which the air bags are deployed.
OCCUPANT CLASSIFICATION SYSTEM
• Replace occupant classification system control uni t and passenger front seat cushion as an assembly.
Refer to SE-51, "
Removal and Installation".
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005266527
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.
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 al l control units using CONSULT-III.
Revision: April 20092010 QX56

SEAT BELTSSB-5
< ON-VEHICLE REPAIR >
C
DE
F
G
I
J
K L
M A
B
SB
N
O P
• Before servicing SRS, turn the igni tion switch off, disconnect both battery terminals and wait at least
three minutes.
1. Disconnect both battery terminals, t hen wait at least three minutes.
2. Remove the center pillar lower finisher. Refer to INT-14, "
Removal and Installation".
3. Remove the retractor anchor bolt, retractor bolt upper, then remove the retractor and belt assembly. • On RH side, disconnect the seat belt tension sensor.
4. Disconnect the seat belt pre-tensioner electrical connector. CAUTION:
• For removing pre-tensioner connector, insert a thinscrewdriver (1) wrapped in tape (3) into the notch. Lift the
locking tab to unlock (2), then remove the connector.
• Install the pre-tensioner co nnector with the locking tab
raised, then push the locking tab into the connector to
lock (4).
Installation
Installation is in the reverse order of removal.
• Install the seat belt retractor and belt assembly bolt upper first.
• Make sure that seat belt height adjuster is lo cked in the lowest position during installation.
FRONT SEAT BELT BUCKLE
1. Seat belt retractor and belt assembly
RH 2. Seat belt lower anchor RH (seat belt
tension sensor) 3. Anchor cover RH (LH similar)
4. Seat belt lower anchor LH 5. Seat belt anchor bracket6. Seat belt retractor and belt assembly
LH
7. Center pillar A. Lower anchor boltB. Anchor bracket bolt
C. Retractor anchor bolt D. Retractor bolt upper ⇐Vehicle front
WHIA0346E
WHIA0279E
Revision: April 20092010 QX56

SCS-6
< FUNCTION DIAGNOSIS >
SUSPENSION CONTROL SYSTEM
Component Parts Location
INFOID:0000000005148148
:Front
Component DescriptionINFOID:0000000005148149
1. Suspension control unit B3 (view with upper and lower luggage side finishers
LH removed) 2. Suspension air compressor C9 (view
under vehicle behind LH rear suspen-
sion) 3. Height sensor C8 (view under vehicle
at LH rear suspension)
4. Compressor motor relay E130, E131 (view with battery removed)
ALEIA0044ZZ
Part name Description
Suspension control unit • Monitors height sensor input to determine vehicle height.
• Actuates the compressor motor relay or exhaust valve solenoid to raise or
lower the vehicle accordingly.
• Sends a ground signal to the combination meter to activate the CK SUSP indicator lamp.
Suspension air compressor (with built in exhaust valve
solenoid) • When the compressor is actuated, it pumps air into the system to raise the
rear suspension.
• When the exhaust valve solenoid is actuated, it vents air from the system to lower the rear suspension.
Height sensor Provides vehicle height input to the suspension control unit.
Revision: April 20092010 QX56

POWER SUPPLY AND GROUND CIRCUITSCS-17
< COMPONENT DIAGNOSIS >
C
DF
G H
I
J
K L
M A
B
SCS
N
O P
POWER SUPPLY AND GROUND CIRCUIT
SUSPENSION CONTROL UNIT
SUSPENSION CONTROL UNIT : Diagnosis ProcedureINFOID:0000000005148175
Regarding Wiring Diagram information, refer to SCS-29, "Wiring Diagram".
1.CHECK FUSES
Check that the following fuses of the sus pension control unit are not are not blown.
Are the fuses OK?
YES >> GO TO 2.
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.POWER SUPPLY CIRCUIT CHECK
1. Disconnect suspension control unit connector B3.
2. Check voltage between the suspension control unit connector B3 and ground.
Are the voltage results as specified?
YES >> GO TO 3.
NO >> • Check connector housings for disconnected or loose terminals. • Repair harness or connector.
3.GROUND CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Check continuity between suspension control unit harness con- nector B3 and ground.
Is continuity present?
YES >> Inspection End.
NO >> Repair harness or connector.
SUSPENSION AIR COMPRESSOR
SUSPENSION AIR COMPRESSOR : Diagnosis ProcedureINFOID:0000000005148176
Regarding Wiring Diagram information, refer to SCS-29, "Wiring Diagram".
UnitTerminals Signal name Fuse No.
Suspension control unit 7
Battery power 29
6 Ignition switch ON or START 12
(+)
(-) OFF ACC ON
Connector Terminal
B3 7Ground
Battery
voltage Battery
voltage Battery
voltage
6Ground0V 0V Battery
voltage
AWEIA0114ZZ
Connector Terminal —Continuity
B3 16Ground Yes
ALEIA0028GB
Revision: April 20092010 QX56