2006 INFINITI QX56 stop start

EM-76Revision: November 2009
ENGINE ASSEMBLY
2006 QX56

Loosen the bolts diagonally.
CAUTION:

Be careful not to damage the drive plate. Especially
avoid deforming and damaging of the signal plate teeth
(circumference position).

Place the drive plate with the signal plate surface fac-
ing other than downward.

Keep magnetic materials away from the signal plate.
CAUTION:
Use an engine stand that has a load capacity [approximately 240kg (529 lb) or more] large enough
for supporting the engine weight.

If the load capacity of the stand is not adequate, remove the following parts beforehand to
reduce the potential risk of overturning the stand.
–Remove the fuel tube and fuel injector assembly. Refer to EM-31, "Removal and Installation" .
–Remove the intake manifold. Refer to EM-17, "Removal and Installation" .
–Remove the ignition coil. Refer to EM-28, "Removal and Installation" .
–Remove the rocker cover. Refer to EM-35, "Removal and Installation" .
–Other removable brackets.
CAUTION:
Before removing the hanging chains, make sure the engine stand is stable and there is no risk of
overturning.
31. Remove the alternator. Refer to SC-25, "
REMOVAL" .
32. Remove the engine mounting insulator and bracket using power tool.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:

When replacing an engine or transmission you must make sure the dowels are installed correctly
during re-assembly.

Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of driv-
etrain components.
INSPECTION AFTER INSTALLATION

Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are
lower than required quantity, fill to the specified level. Refer to MA-11, "
Fluids and Lubricants" .

Use procedure below to check for fuel leakage.

Turn ignition switch ON (with engine stopped). With fuel pressure applied to the fuel piping, check for fuel
leakage at the connection points.

Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids includ-
ing engine oil and engine coolant.

Bleed air from passages in lines and hoses, such as in cooling system.

After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to
specified level if necessary.

Summary of the inspection items:
KBIA2491E

ENGINE ASSEMBLYEM-77
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Revision: November 2009 2006 QX56
*Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item
Before starting engine Engine runningAfter engine stopped
Engine coolant LevelLeakage Level
Engine oil LevelLeakage Level
Other oils and fluids* LevelLeakage Level
Fuel LeakageLeakageLeakage
Exhaust gas —Leakage —

DIFFERENTIAL GEAR OILFFD-7
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Revision: November 2009 2006 QX56
DIFFERENTIAL GEAR OILPFP:KLD30
Changing Differential Gear OilEDS00451
DRAINING
1. Stop the engine.
2. Remove the drain plug from the front final drive assembly to drain the differential gear oil.
3. Install the drain plug with sealant applied on the threads to the front final drive assembly. Tighten to the
specified torque. Refer to FFD-14, "
COMPONENTS" .

Use High Performance Thread Sealant or equivalent. Refer to GI-46, "Recommended Chemical Prod-
ucts and Sealants" .
FILLING
1. Remove the filler plug from the front final drive assembly.
2. Fill the front final drive assembly with new differential gear oil
until the level reaches the specified level near the filler plug hole.
3. Install the filler plug with sealant applied on the threads to the front final drive assembly. Tighten to the specified torque. Refer
to FFD-14, "
COMPONENTS" .

Use High Performance Thread Sealant or equivalent. Refer to
GI-46, "
Recommended Chemical Products and Sealants" .
Checking Differential Gear OilEDS00452
DIFFERENTIAL GEAR OIL LEAKAGE AND LEVEL
1. Make sure that differential gear oil is not leaking from the front final drive assembly or around it.
2. Check the differential gear oil level from the filler plug hole as
shown.
CAUTION:
Do not start engine while checking differential gear oil level.
3. Install the filler plug with sealant applied on the threads to the front final drive assembly. Tighten to the specified torque. Refer
to FFD-14, "
COMPONENTS" .

Use High Performance Thread Sealant or equivalent. Refer to
GI-46, "
Recommended Chemical Products and Sealants" .
Differential gear oil
grade and capacity
: Refer to
MA-11, "
Fluids
and Lubricants" .
LDIA0176E
LDIA0176E

FUEL SYSTEMFL-5
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Revision: November 2009 2006 QX56

After connecting the fuel tube quick connectors, make sure
the quick connectors are secure.
Ensure that the connector and resin tube do not contact
any adjacent parts.

After installing tubes, make sure there is no fuel leakage at
connections in the following steps.
–Apply fuel pressure to fuel lines with turning ignition switch
ON (with engine stopped). Then check for fuel leaks at con-
nections.
–Start the engine and rev it up and check for fuel leaks at
connections.

Use only a Genuine NISSAN fuel filler cap as a replacement.
If an incorrect fuel filler cap is used, the MIL may come on.

For servicing “Evaporative Emission System” parts, refer to
EC-32, "
EVAPORATIVE EMISSION SYSTEM" .

For servicing “On Board Refueling Vapor Recovery
(ORVR)” parts, refer to EC-39, "
ON BOARD REFUELING
VAPOR RECOVERY (ORVR)" .
PBIC1268E

SQUEAK AND RATTLE TROUBLE DIAGNOSESGW-7
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Revision: November 2009 2006 QX56
80845-71L00: 30 mm (1.18 in) thick, 30×50 mm (1.18 ×1.97 in)
FELT CLOTH TAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15× 25 mm (0.59×0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll. The following mate-
rials not found in the kit can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used instead of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingEIS004TO
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the areas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-43980) to repair the noise.

POWER WINDOW SYSTEMGW-19
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Revision: November 2009 2006 QX56
POWER WINDOW LOCK
The power window lock is designed to lock operation of all windows except for front door window LH.
When in the lock position, the power window lock signal is transmitted to power window and door lock/unlock
switch RH by power window serial link. This prevents the power window motor from operating.
RETAINED POWER OPERATION
When the ignition switch is turned to the OFF position from ON or START position, power is supplied for 45
seconds

to main power window and door lock/unlock switch terminal 10

from BCM terminal 68.
When power and ground are supplied, the BCM continues to be energized, and the power window can be
operated.
The retained power operation is canceled when the front LH or front RH door is opened.
Retained power operation period can be changed by CONSULT-II. Refer to GW-33, "
CONSULT-II Function
(BCM)" .
ANTI-PINCH SYSTEM
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and rear
power window control unit LH and RH monitors the power window motor operation and the power window
position (full closed or other) for each power window by the signals from encoder and limit switch in power win-
dow motor.
When a window switch detects interruption during the following close operation,

automatic close operation when ignition switch is in the ON position

automatic close operation during retained power operation
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and rear
power window control unit LH and RH controls each power window motor for open and the power window will
be lowered about 150 mm (5.91 in).
POWER WINDOW CONTROL BY THE FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER
SWITCH)
When ignition key switch is OFF, front power window LH and RH can be opened or closed by turning the front
door lock assembly LH (key cylinder switch) to the UNLOCK/LOCK position for more than 1 second.

Front power windows can be opened as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the UNLOCK position.

Front power windows can be closed as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the LOCK position.

While performing open/close operation for the windows, power window is stopped when the front door
lock assembly LH (key cylinder switch) is placed in the NEUTRAL position.

When the ignition switch is turned ON while the power window opening operation is performed, the power
window opening stops.
CAN Communication System DescriptionEIS005XP
Refer to LAN-26, "CAN COMMUNICATION" .

IDX-7
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ALPHABETICAL INDEX
Rear combination lamp removal and installation ... LT-
125
Rear cover packing replacement diff. ..............
RFD-28
Rear door ........................................... BL-128, GW-68
Rear seat belt ...................................................... SB-6
Rear suspension ............................................. RSU-26
Rear view monitor ............................................... DI-73
Rear washer .................................................... WW-32
Rear window defogger ..................................... GW-74
Rear wiper ....................................................... WW-32
Refrigerant connection precaution .................... ATC-7
Refrigerant discharging evacuating charging ATC-171
Refrigerant general precaution .......................... ATC-6
Refrigerant lines ........... ATC-171, ATC-179, ATC-180
Refrigerant pressure sensor ............ EC-630, ATC-182
Relay box .......................................................... PG-78
Remote keyless entry system ............................ BL-44
Removal and installation (A/T) ........... AT-243, AT-246
Removal and installation (Transfer) ................. TF-145
Ring gear diff. inspection ................................. RFD-18
Road wheel size ................................................. GI-50
Rocker cover ..................................................... EM-35
Room lamp ....................................................... LT-134
Room lamp - See Interior lamp ........................ LT-134
ROOM/L - Wiring diagram ................................ LT-140
RP/SEN - Wiring diagram ............................... EC-631
S
SAE J1979 - Service $01 - 09 ........................... EC-48
SEAT - Wiring diagram ..................................... SE-83
Seat belt inspection ............................... SB-11, MA-32
Seat belt pre-tensioner .................................... SRS-57
Seat belt, front ..................................................... SB-3
Seat belt, rear ...................................................... SB-6
Seat, front .......................................................... SE-91
Self-diagnosis (Transfer) .................................... TF-50
SEN/PW - Wiring diagram ............................... EC-461
SHIFT - Wiring diagram ................................... AT-222
Shift control (Transfer) ....................... TF-149, TF-176
Shift lock system .............................................. AT-221
Shock absorber (front) .................................... FSU-11
Shock absorber (rear) ..................................... RSU-35
Side air bag (satellite) sensor .......................... SRS-56
Side curtain air bag ......................................... SRS-53
Side trim .............................................................. EI-35
SMJ (super multiple junction) ............................ PG-74
SONAR - Wiring diagram .................................... DI-63
Spare tire size .................................................... GI-50
Spark plug ......................................................... EM-29
Spark plug replacement .................................... MA-18
Specification value .......................................... EC-134
Speedometer ......................................................... DI-5
Spiral cable ..................................................... SRS-48
SROOF - Wiring diagram .................................. RF-13
SRS - See Supplemental Restraint System ...... SRS-5
SRS - Wiring diagram ..................................... SRS-12
SRS Trouble diagnoses .................................... SRS-8
Stabilizer bar (front) ......................................... FSU-12
Stabilizer bar (rear) ......................................... RSU-42
Stall test (A/T) .................................................... AT-51
Standardized relay ............................................. PG-72
START - Wiring diagram ................................... SC-11
Starting system .................................................. SC-10
Steering gear, linkage and transfer gear inspection .....
MA-29
Steering linkage ................................................. PS-15
Steering wheel and column ................................. PS-7
Step lamp ......................................................... LT-135
Stop lamp ......................................................... LT-106
Stop lamp switch ................. EC-511, EC-523, EC-586
STOP/L - Wiring diagram ................................. LT-107
Strut (front) ...................................................... FSU-10
STSIG - Wiring diagram .................................. AT-101
Sub-oil pump (Transfer) ...................... TF-154, TF-167
Sun gear (Transfer) ............................ TF-149, TF-176
Sun roof, electric ................................................ RF-10
Sunload sensor .............................................. ATC-140
Sunroof .............................................................. RF-24
Supplemental Restraint System ........................ SRS-5
Supplemental restraint system - Wiring diagram . SRS-
12
Symbols and abbreviations ..................... GI-10, GI-23
Symptom matrix chart ........................................ EC-92
System readiness test (SRT) code .................... EC-54
T
Tachometer .......................................................... DI-5
Tail lamp ........................................................... LT-111
TAIL/L - Wiring diagram .................................... LT-113
TCM circuit diagram .......................................... AT-50
TCM inspection table ......................................... AT-83
TCS - Wiring diagram ..................................... BRC-16
TCS (traction control system) ........................... BRC-7
TCS component parts and connector location BRC-14
TCS wheel sensors ........................................ BRC-14
Telephone .......................................................... AV-64
Theft warning system - See Vehicle security (Theft warn-
ing) system ......................................................... BL-75
Thermometer ...................................................... DI-26
Three way catalyst ............................................. EM-21
Three way catalyst function (Bank 1) .............. EC-354
Three way catalyst function (Bank 2) .............. EC-354
Three way catalyst precautions ............................ GI-5
Throttle control motor ...................................... EC-540
Throttle control motor relay .............................. EC-528
Throttle position sensor (TPS) ... EC-198, EC-320, EC-
483, EC-485, EC-560
Throttle valve closed position learning .............. EC-78
Tie-rod ............................................................... PS-15
Timing chain ...................................................... EM-37
Tire rotation ....................................................... MA-28
Tire size .............................................................. GI-50
Torque converter installation AT-244, AT-245, AT-248,
AT-249
Torque convertor clutch solenoid valve .... AT-118, AT-
120

IP-6
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
73982-9E000: 45 mm (1.77 in) thick, 50 x 50 mm (1.97 x 1.97 in)/73982-50Y00: 10 mm (0.39 in) thick, 50 x 50
mm (1.97 x 1.97 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 x 50 mm (1.18 x 1.97 in)
FELT CLOTH TAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15 x 25 mm (0.59 x 0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll
The following materials, not found in the kit, can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingEIS0062R
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops