length INFINITI QX56 2006 Factory Owner's Manual

GI-6
PRECAUTIONS
Revision: November 20092006 QX56
(i.e. Flexible Fuel Vehicle - FFV models). Using a fuel other than that specified could adversely affect
the emission control devices and systems, and could also affect the warranty coverage validity.
Precautions for Multiport Fuel Injection System or Engine Control SystemEAS001FA

Before connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.

Before disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.

Be careful not to jar components such as ECM and mass air
flow sensor.
Precautions for HosesEAS001FB
HOSE REMOVAL AND INSTALLATION

To prevent damage to rubber hose, do not pry off rubber hose
with tapered tool or screwdriver.

To reinstall the rubber hose securely, make sure of hose inser-
tion length and clamp orientation. (If tube is equipped with hose
stopper, insert rubber hose into tube until it butts up against
hose stopper.)
HOSE CLAMPING

If old rubber hose is re-used, install hose clamp in its original
position (at the indentation where the old clamp was). If there is
a trace of tube bulging left on the old rubber hose, align rubber
hose at that position.

Discard old clamps; replace with new ones.
SGI787
SMA019D
SMA020D
SMA021D

GI-50
IDENTIFICATION INFORMATION
Revision: November 20092006 QX56
DimensionsEAS001G4
Unit: mm (in)
Wheels & TiresEAS001G5
Drive type2WD 4WD
Overall length 5255 (206.9) 5255 (206.9)
Overall width 2001 (78.8) 2001 (78.8)
Overall height (with roof rack) 1976.8 (77.8) 1997.7 (78.7)
Front tread width 1725 (67.9) 1725 (67.9)
Rear tread width 1725 (67.9) 1725 (67.9)
Wheelbase 3130 (123.2) 3130 (123.2)
Minimum Running Ground Clearance (at front sus-
pension) With standard
undercover
254.8 (10.03) 273.7 (10.77)
With oil pan skid
plate 250.5 (9.86) 269.5 (10.61)
Drive Type Grade
Road wheelTireSpare tire size
All LE7-Spoke 18x8J Chromium Aluminum
Alloy P265/70R18
P265/70R18

IDX-5
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ALPHABETICAL INDEX
H
H/AIM - Wiring diagram ...................................... LT-66
H/LAMP - Wiring diagram .................................... LT-9
Handling precautions for plastics ..................... BL-187
Harness connector ............................................ PG-68
Harness layout .................................................. PG-41
Hazard warning lamp ......................................... LT-80
Headlamp ............................................................. LT-5
Headlamp aiming control ................................... LT-66
Headlamp leveler - See Headlamp aiming control . LT-
66
Headlamp removal and installation .................... LT-31
Heated oxygen sensor 2 (bank 1) .... EC-253, EC-264,
EC-277
Heated oxygen sensor 2 (bank 2) .... EC-253, EC-264,
EC-277
Heated oxygen sensor 2 heater (bank 1) ........ EC-163
Heated oxygen sensor 2 heater (bank 2) ........ EC-163
Heated seat ....................................................... SE-84
Heater and cooling unit (Heater core) . ATC-153, ATC-
156
Heater unit (heater core) ............... ATC-153, ATC-156
Height (Dimensions) ........................................... GI-50
HFC134a (R134a) system identification ........... ATC-6
HFC134a (R134a) system precaution ............... ATC-5
HFC134a (R134a) system service procedure ATC-171
HFC134a (R134a) system service tools ......... ATC-14
HFC134a system service equipment precaution ATC-
11
High and low reverse clutch solenoid valve .... AT-151,
AT-153
Homelink universal transceiver ........................ BL-156
Horn ................................................................ WW-55
HORN - Wiring diagram .................................. WW-55
How to erase DTC for OBD system .................. EC-61
HSEAT - Wiring diagram ................................... SE-86
I
IATS - Wiring diagram ..................................... EC-189
ICC - Wiring diagram ....................................... ACS-20
ICC/BS - Wiring diagram ................................. EC-504
ICC/SW - Wiring diagram ................................ EC-489
ICCBOF - Wiring diagram ............................... EC-611
Identification plate .............................................. GI-48
Idle air volume learning ..................................... EC-78
Idle speed .............................................. EC-71, EC-76
Idle speed control (ISC) .................... EC-444, EC-446
Ignition coil .......................................... EM-28, EC-618
Ignition control system .................................... EC-618
Ignition key hole illumination ............................ LT-134
Ignition timing ........................................ EC-71, EC-76
IGNSYS - Wiring diagram ............................... EC-619
ILL - Wiring diagram ......................................... LT-163
Illumination ....................................................... LT-157
In vehicle sensor ........................... ATC-137, ATC-146
In-cabin Microfilter ............................................. MA-21
INJECT - Wiring diagram ................................ EC-599
Injector ............................................................. EC-598
Input clutch solenoid valve ................. AT-139, AT-141
Instrument panel .................................................. IP-10
Intake air temperature sensor ............ EC-188, EC-208
Intake door control linkage adjustment . ATC-85, ATC-
88
Intake door motor ........................... ATC-83, ATC-160
Intake manifold .................................................. EM-17
Intake sensor ................................ ATC-142, ATC-148
Integrated homelink transmitter - See Homelink univer-
sal tranceiver .................................................... BL-156
Intelligent cruise control (ICC) system ............... ACS-6
Interior ................................................................. EI-35
Interior lamp ...................................................... LT-134
Interior lamp on-off control ................................ LT-135
Internal gear (Transfer) ....................... TF-149, TF-176
IPDM (Intelligent power distribution module engine
room) ................................................................. PG-18
IVIS (Infiniti vehicle immobilizer system) .......... BL-137
IVIS (Infiniti vehicle immobilizer system) precautions ...
GI-3
J
Jacking points ..................................................... GI-41
Junction box (J/B) .............................................. PG-76
K
Key illumination ................................................ LT-135
KEYLES - Wiring diagram .................................. BL-49
Knock sensor (KS) ........................................... EC-335
KS - Wiring diagram ........................................ EC-336
L
Laser beam aiming adjustment ....................... ACS-12
Length (Dimensions) .......................................... GI-50
License lamp .................................................... LT-111
Lifting points ....................................................... GI-42
Line pressure solenoid valve ........................... AT-122
Line pressure switch (Transfer) .......... TF-154, TF-167
Line pressure test (A/T) ..................................... AT-52
Location of electrical units ................................. PG-65
Low coast brake solenoid valve .......... AT-155, AT-157
Low tire pressure warning system ...................... WT-8
Low tire pressure warning system - trouble diagnoses
WT-11
Low tire pressure warning system - Wiring diagram .....
WT-11
Lubricant (R134a) A/C ..................................... ATC-22
Lubricants .......................................................... MA-11
Lubrication circuit (engine) .................................. LU-5
Lubrication oil A/C ........................................... ATC-22
Lubrication-locks, hinges and hood latches ....... MA-31
M
MAFS - Wiring diagram ..................... EC-174
, EC-182

LT-6
HEADLAMP (FOR USA)
Revision: November 20092006 QX56

to BCM terminal 70.
With the ignition switch in the ON or START position, power is supplied

to ignition relay, located in the IPDM E/R, and

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38.
Ground is supplied

to BCM terminal 67

through grounds M57, M61 and M79, and

to IPDM E/R terminals 38 and 59

through grounds E9, E15 and E24.
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input requesting the headlamps to illuminate. This
input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the IPDM E/R con-
trols the headlamp low relay coil. When energized, this relay directs power

through 15A fuse (No. 41, located in the IPDM E/R)

through IPDM E/R terminal 54

to front combination lamp RH terminal 5, and

through 15A fuse (No. 40, located in the IPDM E/R)

through IPDM E/R terminal 52

to front combination lamp LH terminal 5.
Ground is supplied

to front combination lamp LH and RH terminal 1

through grounds E9, E15 and E24.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input request-
ing the headlamp high beams to illuminate. This input is communicated to the IPDM E/R across the CAN com-
munication lines. The CPU of the combination meter controls the ON/OFF status of the HIGH BEAM indicator.
The CPU of the IPDM E/R controls the headlamp high relay coil. When energized, this relay directs power

through 10A fuse (No. 34, located in the IPDM E/R)

through IPDM E/R terminal 56

to front combination lamp RH terminal 6, and

through 10A fuse (No. 35, located in the IPDM E/R)

through IPDM E/R terminal 55

to front combination lamp LH terminal 6.
Ground is supplied

to front combination lamp LH and RH terminal 2

through grounds E9, E15 and E24.
With power and ground supplied, the high beam headlamps illuminate.
XENON HEADLAMP
Xenon type headlamp is adopted to the low beam headlamps. Xenon bulbs do not use a filament. Instead,
they produce light when a high voltage current is passed between two tungsten electrodes through a mixture
of xenon (an inert gas) and certain other metal halides. In addition to added lighting power, electronic control
of the power supply gives the headlamps stable quality and tone color.
Following are some of the many advantages of the xenon type headlamp.

The light produced by the headlamps is a white color comparable to sunlight that is easy on the eyes.

Light output is nearly double that of halogen headlamps, affording increased area of illumination.

The light features a high relative spectral distribution at wavelengths to which the human eye is most sen-
sitive. This means that even in the rain, more light is reflected back from the road surface toward the vehi-
cle, for added visibility.

PR-12
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: November 20092006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEDS001WB
4X2 Model
4X4 Model
Applied modelVK56DE
Propeller shaft model 2S1350
Number of joints 2
Coupling method with rear final drive Flange type
Coupling method with transmission Sleeve type
Shaft length (Spider to spider) 1640 mm (64.57 in)
Shaft outer diameter 127.6 mm (5.02 in)
Journal axial play 0.02 mm (0.0008 in) or less
Propeller shaft run out limit 1.02 mm (0.0402 in) or less
Propeller shaft joint flex effort 2.26 N·m (0.23 kg-m, 20 in-lb) or less
Applied model VK56DE
Propeller shaft model Front
Rear
2F1310 2S1350
Number of joints 2
Coupling method with front final drive Flange type
Coupling method with transfer Flange typeSleeve type
Shaft length (Spider to spider) 718 mm (28.27 in)1640 mm (64.57 in)
Shaft outer diameter 63 5 mm (2.5 in)127.6 mm (5.02 in)
Journal axial play 0.02 mm (0.0008 in) or less
Propeller shaft run out limit 0.6 mm (0.024 in) or less 1.02 mm (0.0402 in) or less
Propeller shaft joint flex effort 1.96 N·m (0.20 kg-m, 17 in-lb)
or less 2.26 N·m (0.23 kg-m, 20 in-lb)
or less

STEERING COLUMNPS-11
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PS
Revision: November 2009 2006 QX56
4. Remove lock nut and bolt, then separate upper shaft from upper
joint.
5. Remove two nuts and two bolts, then remove steering column assembly from steering member.
6. Remove hole cover seal and clamp.
7. Remove mounting nuts, then remove hole cover from dash panel.
8. Raise vehicle, then remove mounting bolt (lower side) of lower joint shaft and remove lower joint shaft and upper shaft as an
assembly.
INSPECTION AFTER REMOVAL

Check for damage to steering column jacket tube. If damage is found, replace steering column with new
one.

If vehicle has been in a collision, check column length “L1” and
“L2 ” as shown. If out of specification, replace steering column
with new one.

Check for proper lubrication, apply grease as necessary.
INSTALLATION
Installation is in the reverse order of removal.
LGIA0027E
LGIA0028E
LGIA0029E
Steering column length
L1 : 158 mm (6.22 in)
L2 : 262 mm (10.31 in)
SGIA0475E

PS-14
STEERING COLUMN
Revision: November 20092006 QX56
ASSEMBLY

Assembly is in the reverse order of disassembly.

Install new tamper resistant self-shear screws.
INSPECTION AFTER ASSEMBLY
When the steering wheel does not turn smoothly, check the steering column as follows:
1. Check the column bearings for damage or unevenness. Lubricate with recommended multi-purpose
grease. Replace the steering column as an assembly, if necessary.
2. Check the column tube for deformation or breakage. Replace the steering column as an assembly, if nec- essary.
3. If the vehicle has been involved in a collision, or if noise and rat- tles are heard during a turn, check the length "L" of the column.
If out of specification, replace the steering column as an assem-
bly.
4. Check for proper lubrication, apply grease as necessary.
5. Check for wear around the seal edges, replace the steering col- umn as an assembly as necessary.
6. Check for corrosion or pitting around the seal sliding area.
WGIA0009E
Steering column length "L" : 610 mm (24.02 in)
WGIA0080E

PS-20
POWER STEERING GEAR AND LINKAGE
Revision: November 20092006 QX56
8. Thread the outer sockets onto the inner sockets to the specified
length "L", then tighten the lock nuts to the specification. Refer to
PS-17, "
Disassembly and Assembly" . Reconfirm that the tie-rod
length "L" is within specification.
Maximum inner socket
length "L" : 115.2 mm (4.54 in)
SGIA0167E

SERVICE DATA AND SPECIFICATIONS (SDS)PS-25
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PS
Revision: November 2009 2006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Steering WheelEGS000UN
Steering ColumnEGS000UO
Inspection After Assembly
Unit: mm (in)
Inspection After Removal
Unit: mm (in)
End play of the axial direction for steering wheel
0 mm (0 in)
Steering wheel play on the outer circumference 0 − 35 mm (0 − 1.38 in)
Steering wheel turning force 39 N (4 kg-f, 9 lb-f) or less
Steering column length “L” 610 (24.02)
WGIA0080E
Steering column length “L2” 262 (10.31)
Steering column length “ L1” 158 (6.22)
SGIA0475E

PS-26
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: November 20092006 QX56
Inspection After Installation
Steering Outer Socket and Inner SocketEGS000UP
Unit: mm (in)
Range
“A ” 61.3 mm (2.41 in)
WGIA0083E
Tie-rod ball joint outer socketSwinging torque
0.3 − 2.9 N ·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Measurement on spring balance
Measuring point: cotter pin hole of stud 4.84
− 46.7 N (0.50 − 4.7 kg, 4 − 34 lb)
Rotating torque 0.3 − 2.9 N ·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Axial end play 0.5 mm (0.020 in) or less
Tie-rod ball joint inner socket Swinging torque
1.0 − 7.8 N ·m (0.11 − 0.79 kg-m, 9 − 69 in-lb)
Measurement on spring balance

Measuring point: "L" mark see above,
"L"=83.2 mm (3.276 in). 12.1
− 93.7 N (1.3 − 9.5 kg, 9 − 69 lb)
Axial end play 0.2 mm (0.08 in) or less
SGIA0358E
Inner socket length “L ” 115.2 (4.54)
SGIA0167E