service INFINITI QX56 2006 Factory Manual Online

BL-142
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
6. Touch "OTHER".
7. Select “NATS V.5.0 ”.
If “NATS V5.0 ” is not indicated, go to GI-40, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
8. Perform each diagnostic test mode according to each service procedure.
For further information, see the CONSULT-II Operation Manual
NATS-IVIS/NVIS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
NOTE:

When any initialization is performed, all IDs previously registered will be erased and all NATS ignition keys
must be registered again.

The engine cannot be started with an unregistered key. In this case, the system will show “DIFFERENCE
OF KEY ” or “LOCK MODE ” as a self-diagnostic result on the CONSULT-II screen.

In rare case, “CHAIN OF ECM-IMMU ” might be stored as a self-diagnostic result during key registration
procedure, even if the system is not malfunctioning.
LIIA0556E
SEL027X
SEL150X
CONSULT-II DIAGNOSTIC TEST
MODE Description
C/U INITIALIZATION When replacing any of the following components, C/U initialization and re-registration of all
NATS ignition keys are necessary.
[(NATS ignition key/ BCM/ ECM]
SELF-DIAG RESULTS Detected items (screen terms) are as shown in the chart.
Refer to
BL-143, "
IVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART" .

HOMELINK UNIVERSAL TRANSCEIVERBL-157
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Trouble DiagnosesEIS0061X
DIAGNOSTIC PROCEDURE
SYMPTOM: Transmitter does not activate receiver.
Before conducting the procedure given below, make sure that system receiver (garage door opener, etc.)
operates with original, hand-held transmitter. If NG, receiver or hand-held transmitter is malfunctioning, not
vehicle related.
1. ILLUMINATE CHECK

Turn ignition switch OFF.

Does amber light (LED) of transmitter illuminate when any but-
ton is pressed?
YES or NO
YES >> GO TO 2.
NO >> GO TO 3.
2. TRANSMITTER CHECK
Check transmitter with Tool.*
*For details, refer to Technical Service Bulletin.
OK or NG
OK >> Receiver or hand-held transmitter malfunction, not vehicle related.
NG >> Replace transmitter.
3. POWER SUPPLY CHECK
1. Disconnect transmitter.
2. Check voltage between Homelink ® universal transceiver connector R106 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace fuse or harness.
LIIA1466E
1 - Ground : Battery voltage
LIIA1467E

BODY REPAIRBL-165
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Corrosion ProtectionEIS004TA
DESCRIPTION
To provide improved corrosion prevention, the following anti-corrosive measures have been implemented in
NISSAN production plants. When repairing or replacing body panels, it is necessary to use the same anti-cor-
rosive measures.
ANTI-CORROSIVE PRECOATED STEEL (GALVANNEALED STEEL)
To improve repairability and corrosion resistance, a new type of anti-
corrosive precoated steel sheet has been adopted replacing conven-
tional zinc-coated steel sheet.
Galvannealed steel is electroplated and heated to form Zinc-iron
alloy, which provides excellent and long term corrosion resistance
with cationic electrode position primer.
Nissan Genuine Service Parts are fabricated from galvannealed steel. Therefore, it is recommended that
GENUINE NISSAN PARTS or equivalent be used for panel replacement to maintain the anti-corrosive perfor-
mance built into the vehicle at the factory.
PHOSPHATE COATING TREATMENT AND CATIONIC ELECTRODEPOSITION PRIMER
A phosphate coating treatment and a cationic electrode position primer, which provide excellent corrosion pro-
tection, are employed on all body components.
CAUTION:
Confine paint removal during welding operations to an absolute
minimum.
Nissan Genuine Service Parts are also treated in the same manner. Therefore, it is recommended that GENU-
INE NISSAN PARTS or equivalent be used for panel replacement to maintain anti-corrosive performance built
into the vehicle at the factory.
PIIA0093E
PIIA0095E

BL-192
BODY REPAIR
Revision: November 20092006 QX56

Follow the specifications for the proper welding pitch.
Unit:mm
Foam RepairEIS004TG
During factory body assembly, foam insulators are installed in certain body panels and locations around the
vehicle. Use the following procedure(s) to replace any factory-installed foam insulators.
URETHANE FOAM APPLICATIONS
Use commercially available spray foam for sealant (foam material) repair of material used on vehicle. Read
instructions on product for fill procedures.
FILL PROCEDURES
1. Fill procedures after installation of service part.
–Remove foam material remaining on vehicle side.
–Clean area in which foam was removed.
–Install service part.
–Insert nozzle into hole near fill area and fill foam material or fill in enough to close gap with the service
part.
2. Fill procedures before installation of service part.
–Remove foam material remaining on vehicle side.
–Clean area in which foam was removed.
–Fill foam material on wheelhouse outer side.
NOTE:
Fill in enough to close gap with service part while avoiding
flange area.
–Install service part.
NOTE:
Refer to label for information on working times. Thickness (t)
Minimum pitch ( )
0.6 (0.024)
0.8 (0.031)
1.0 (0.039)
1.2 (0.047)
1.6 (0.063)
1.8 (0.071) 10 (0.39) or over
12 (0.47) or over
18 (0.71) or over
20 (0.79) or over
27 (1.06) or over
31 (1.22) or over
PIIA0148E
LIIA1081E
LIIA1082E

BODY REPAIRBL-193
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Replacement OperationsEIS004TH
DESCRIPTION
This section is prepared for technicians who have attained a high level of skill and experience in repairing col-
lision-damaged vehicles and also use modern service tools and equipment. Persons unfamiliar with body
repair techniques should not attempt to repair collision-damaged vehicles by using this section.
Technicians are also encouraged to read Body Repair Manual (Fundamentals) in order to ensure that the orig-
inal functions and quality of the vehicle can be maintained. The Body Repair Manual (Fundamentals) contains
additional information, including cautions and warnings, that are not including in this manual. Technicians
should refer to both manuals to ensure proper repairs.
Please note that this information is prepared for worldwide usage, and as such, certain procedures may not
apply in some regions or countries.

BODY REPAIRBL-195
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Revision: November 2009 2006 QX56

Front pillar butt joint can be determined anywhere within shaded
area as shown in the figure. The best location for the butt joint is
at position A due to the construction of the vehicle. Refer to the
front pillar section.

Determine cutting position and record distance from the locating
indent. Use this distance when cutting the service part. Cut outer
front pillar over 60 mm above inner front pillar cut position.

Prepare a cutting jig to make outer pillar easier to cut. Also, this
will permit service part to be accurately cut at joint position.

An example of cutting operation using a cutting jig is as follows.
1. Mark cutting lines. A: Cut position of outer pillar
B: Cut position of inner pillar
2. Align cutting line with notch on jig. Clamp jig to pillar.
3. Cut outer pillar along groove of jig. (At position A)
4. Remove jig and cut remaining portions.
5. Cut inner pillar at position B in same manner.
PIIA0150E
PIIA0151E
PIIA0152E
PIIA0153E

BR-1
BRAKE SYSTEM
F BRAKES
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for Brake System ............................. ..... 3
PREPARATION ...................................................... ..... 4
Special Service Tool ............................................ ..... 4
Commercial Service Tools ................................... ..... 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 5
NVH Troubleshooting Chart ................................ ..... 5
BRAKE PEDAL ..................................................... ..... 6
Inspection and Adjustment .................................. ..... 6
INSPECTION ................................................... ..... 6
ADJUSTMENT ................................................. ..... 7
Removal and Installation ..................................... ..... 8
REMOVAL ........................................................ ..... 8
INSPECTION AFTER REMOVAL .................... ..... 9
INSTALLATION ................................................ ..... 9
BRAKE FLUID ....................................................... ... 10
On-board Inspection ............................................ ... 10
LEVEL CHECK ................................................ ... 10
Drain and Refill .................................................... ... 10
Bleeding Brake System ....................................... .... 11
BRAKE PIPING AND HOSE ................................. ... 12
Hydraulic Circuit .................................................. ... 12
Removal and Installation of Front Brake Hose .... ... 12
REMOVAL ........................................................ ... 12
INSTALLATION ................................................ ... 13
Removal and Installation of Rear Brake Hose .... ... 13
REMOVAL ........................................................ ... 13
INSTALLATION ................................................ ... 13
Inspection After Installation ................................. ... 14
BRAKE MASTER CYLINDER ............................... ... 15
On-board Inspection ............................................ ... 15
LEAK INSPECTION ......................................... ... 15
Removal and Installation ..................................... ... 15
REMOVAL ........................................................ ... 15INSTALLATION ................................................
... 16
Disassembly and Assembly ................................. ... 16
DISASSEMBLY ................................................ ... 16
ASSEMBLY ...................................................... ... 16
BRAKE BOOSTER ................................................ ... 17
On-Vehicle Service .............................................. ... 17
OPERATING CHECK ....................................... ... 17
AIRTIGHT CHECK ........................................... ... 17
Removal and Installation ..................................... ... 18
REMOVAL ........................................................ ... 18
INSTALLATION ................................................ ... 18
VACUUM LINES .................................................... ... 20
Removal and Installation ..................................... ... 20
Inspection ............................................................ ... 20
VISUAL INSPECTION ...................................... ... 20
CHECK VALVE INSPECTION .......................... ... 20
FRONT DISC BRAKE ............................................ ... 21
On-vehicle Inspection .......................................... ... 21
PAD WEAR INSPECTION ................................... 21
Components ........................................................ ... 21
Removal and Installation of Brake Pad ............... ... 22
REMOVAL ........................................................ ... 22
INSTALLATION ................................................ ... 22
Removal and Installation of Brake Caliper and Disc
Rotor .................................................................... ... 22
REMOVAL ........................................................ ... 22
INSTALLATION ................................................ ... 22
Disassembly and Assembly of Brake Caliper ...... ... 23
DISASSEMBLY ................................................ ... 23
CALIPER INSPECTION ................................... ... 24
ASSEMBLY ...................................................... ... 24
DISC ROTOR INSPECTION ............................ ... 25
BRAKE BURNISHING PROCEDURE .............. ... 25
REAR DISC BRAKE .............................................. ... 27
On-vehicle Inspection .......................................... ... 27
PAD WEAR INSPECTION ................................... 27
Components ........................................................ ... 27
Removal and Installation of Brake Pad ............... ... 28
REMOVAL ........................................................ ... 28
INSTALLATION ................................................ ... 28

BR-2Revision: November 20092006 QX56
Removal and Installation of Brake Caliper and Disc
Rotor ....................................................................
... 28
REMOVAL ........................................................ ... 28
INSTALLATION ................................................. ... 28
Disassembly and Assembly of Brake Caliper ...... ... 29
DISASSEMBLY ................................................ ... 29
CALIPER INSPECTION ................................... ... 29
ASSEMBLY ...................................................... ... 30
DISC ROTOR INSPECTION ............................ ... 30
BRAKE BURNISHING PROCEDURE .............. ... 31SERVICE DATA AND SPECIFICATIONS (SDS) ...
... 32
General Specifications ......................................... ... 32
Brake Pedal ......................................................... ... 32
Brake Booster ...................................................... ... 32
Check Valve ......................................................... ... 32
Front Disc Brake .................................................. ... 32
Rear Disc Brake ................................................... ... 33

PRECAUTIONSBR-3
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EFS004VW
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 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Brake SystemEFS004VX

Always use recommended brake fluid. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" .

Do not reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas.

To clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use clean brake fluid.

Do not use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.

Use flare nut wrench when removing and installing brake tube.

Always check tightening torque when installing brake lines.

Before working, turn ignition switch to OFF and disconnect con-
nectors for ABS actuator and electric unit (control unit) or battery
terminals.

Burnish the brake contact surfaces after refinishing or replacing
drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage.
Refer to BR-25, "
BRAKE BURNISHING PROCEDURE" .
WARNING:

Clean brake pads and shoes with a waste cloth, then wipe
with a dust collector.SBR686C

BR-4
PREPARATION
Revision: November 20092006 QX56
PREPARATIONPFP:00002
Special Service ToolEFS0068R
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsEFS0068S
Tool number
(Kent-Moore No.)
Tool nameDescription
—
(J-46532)
Brake and clutch pedal height measure-
ment tool Measuring brake pedal height
LFIA0227E
Tool name
Description
1. Flare nut crowfoot
2. Torque wrench Removing and installing each brake pip-
ing.
a: 10 mm (0.39 in) / 12 mm (0.47 in)
Power tool Removing nuts, bolts and screws.
S-NT360
PBIC0190E
PBIC0191E