Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti FX45 FX35 2006-2008 Approved FX45_35-S50-2007 ps

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POWER STEERING SYSTEM

G STEERING

B
SECTION
POWER STEERING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 3
. INSPECTION AFTER INSTALLATION ............... 15 . F
Precautions for Supplemental Restraint System Disassembly and Assembly ................................... 16 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- COMPONENTS .................................................. 16.
SIONER" ................................................................. 3
. DISASSEMBLY .................................................. 17
. PS
Precautions Necessary for Steering Wheel Rotation ASSEMBLY ........................................................ 17
.
After Battery Disconnect ......................................... 3. POWER STEERING GEAR AND LINKAGE ........... 18 .
OPERATION PROCEDURE ................................ 3 . Removal and Installation ....................................... 18
.
H
Precautions for Steering System ............................. 4 . COMPONENTS .................................................. 18.
PREPARATION .......................................................... 5
. REMOVAL .......................................................... 18
.
Special Service Tools .............................................. 5
. INSTALLATION .................................................. 20
.
Commercial Service Tools ....................................... 6 . INSPECTION AFTER INSTALLATION ............... 20 . I
NOISE, VIBRATION AND HARSHNESS (NVH) Disassembly and Assembly ................................... 21 .
TROUBLESHOOTING ............................................... 7 . COMPONENTS .................................................. 21.
NVH Troubleshooting Chart .................................... 7 . DISASSEMBLY .................................................. 22
. J
POWER STEERING FLUID ....................................... 8 . INSPECTION AFTER DISASSEMBLY ............... 24 .
Checking Fluid Level ............................................... 8
. ASSEMBLY ........................................................ 25
.
Checking Fluid Leakage .......................................... 8 . POWER STEERING OIL PUMP .............................. 30 .
K
Air Bleeding Hydraulic System ................................ 8 . On-Vehicle Inspection and Service ........................ 30 .
STEERING WHEEL ................................................. 10 . CHECKING RELIEF OIL PRESSURE (VQ35DE
On-Vehicle Inspection and Service ....................... 10 . MODELS) ........................................................... 30
.
CHECKING CONDITION OF INSTALLATION ... 10 CHECKING RELIEF OIL PRESSURE (VK45DE L
CHECKING STEERING WHEEL PLAY ............. 10 . MODELS) ........................................................... 31
.
CHECKING NEUTRAL POSITION ON STEER- Removal and Installation (VQ35DE Models) ......... 32 .
ING WHEEL ....................................................... 10
. REMOVAL .......................................................... 32
. M
CHECKING STEERING WHEEL TURNING INSTALLATION .................................................. 32
.
FORCE ............................................................... 10
. Removal and Installation (VK45DE Models) ......... 32 .
CHECKING FRONT WHEEL TURNING ANGLE ....11 REMOVAL .......................................................... 32
.
Removal and Installation ....................................... 12 . INSTALLATION .................................................. 32
.
REMOVAL .......................................................... 12
. Disassembly and Assembly (VQ35DE Models) .... 33 .
INSTALLATION .................................................. 12. COMPONENTS .................................................. 33.
STEERING COLUMN .............................................. 13 . INSPECTION BEFORE DISASSEMBLY ............ 33 .
Removal and Installation ....................................... 13 . DISASSEMBLY .................................................. 33
.
COMPONENTS ................................................. 13 . INSPECTION AFTER DISASSEMBLY ............... 34 .
REMOVAL .......................................................... 13
. ASSEMBLY ........................................................ 34
.
INSPECTION AFTER REMOVAL ...................... 15 . Disassembly and Assembly (VK45DE Models) ..... 37 .
INSTALLATION .................................................. 15. COMPONENTS .................................................. 37.
INSPECTION BEFORE DISASSEMBLY ............ 37 .
DISASSEMBLY .................................................. 37
.
INSPECTION AFTER DISASSEMBLY ............... 38 .
ASSEMBLY ........................................................ 39
.

Revision: 2006 July PS-1 2007 FX35/FX45
HYDRAULIC LINE ................................................... 41
. Steering Angle ........................................................45
.
Components .......................................................... 41
. Steering Column ....................................................45.
Removal and Installation ....................................... 44
. Steering Outer Socket and Inner Socket ................45 .
VQ35DE MODELS ............................................. 44 . Steering Gear .........................................................46
.
VK45DE MODELS .............................................. 44 . Oil Pump ................................................................46
.
SERVICE DATA AND SPECIFICATIONS (SDS) ..... 45 . Steering Fluid .........................................................46
.
Steering Wheel ...................................................... 45
.

Revision: 2006 July PS-2 2007 FX35/FX45
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NGS000F5

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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: D
q 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. E
q 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. F
q 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. PS
Precautions Necessary for Steering Wheel Rotation After Battery Disconnect
NGS000F6

NOTE: H
q This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
q Remove and install all control units after disconnecting both battery cables with the ignition knob in the I
LOCK position.
q Always use CONSULT-II 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.
J
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism 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. K
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE L
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged. M
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 all control units using CONSULT-II.

Revision: 2006 July PS-3 2007 FX35/FX45
PRECAUTIONS

Precautions for Steering System NGS000F7

q In case of removing steering gear assembly, make the final tightening with grounded and unloaded vehi-
cle condition, and then check wheel alignment.
q Observe the following precautions when disassembling.

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