NISSAN X-TRAIL 2005 Service Repair Manual

TIME CONTROL UNIT
BCS-7
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F
G
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MA
B
BCS

NOTE:
*1: With super lock system.
*2: When seat pressure switch is ON.
*3: Wire color is different depending on vehicle. Each wire color is as follows:
35 LG/B Rear window defogger switchRear window defogger switch is
pushed.0V
Rear window defogger switch is not
pushed.5V
36 *3 Combination meterWhen the vehicle speed is approx. 40
km (25 MPH). Terminal
No.Wire
colorConnections Operation condition Voltage (Approximate values)
ELF1080D
Vehicle Wire color
A/T models L/B
M/T models L/Y

BCS-8
TIME CONTROL UNIT

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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SECTION PS
A
B
PS

POWER STEERING SYSTEM
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Steering System .............................. 3
PREPARATION ........................................................... 4
Special Service Tools [SST] ..................................... 4
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Trouble shooting Chart .................................... 5
POWER STEERING FLUID ........................................ 6
Checking Fluid Level ................................................ 6
Checking Fluid Leakage ........................................... 6
Air Bleeding Hydraulic System ................................. 6
STEERING WHEEL .................................................... 8
On-Vehicle Inspection and Service .......................... 8
CHECKING CONDITION OF INSTALLATION ...... 8
CHECKING STEERING WHEEL PLAY ................ 8
CHECKING NEUTRAL POSITION STEERING
WHEEL ................................................................. 8
CHECKING STEERING WHEEL TURNING
FORCE .................................................................. 8
CHECKING FRONT WHEEL TURNING ANGLE ..... 9
Removal and Installation ........................................ 10
REMOVAL ........................................................... 10
INSTALLATION ................................................... 10
STEERING COLUMN ................................................11
Removal and Installation ......................................... 11
COMPONENT ...................................................... 11
REMOVAL OF LOWER SHAFT, HOLE COVER,
CLAMP AND HOLE COVER SEAL ..................... 11
INSTALLATION OF LOWER SHAFT, HOLE
COVER, CLAMP AND HOLE COVER SEAL ...... 12
REMOVAL OF STEERING COLUMN ASSEM-
BLY ...................................................................... 12
INSPECTION AFTER REMOVAL ....................... 13
INSTALLATION OF STEERING COLUMN
ASSEMBLY ......................................................... 13INSPECTION AFTER INSTALLATION ................ 13
Disassembly and Assembly .................................... 14
COMPONENT ..................................................... 14
DISASSEMBLY ................................................... 14
INSPECTION AFTER DISASSEMBLY ................ 14
ASSEMBLY ......................................................... 14
INSPECTION AFTER ASSEMBLY ...................... 15
POWER STEERING GEAR AND LINKAGE ............ 16
Removal and Installation ........................................ 16
COMPONENT ..................................................... 16
REMOVAL ........................................................... 16
INSTALLATION ................................................... 17
Disassembly and Assembly .................................... 18
COMPONENT ..................................................... 18
DISASSEMBLY ................................................... 19
INSPECTION AFTER DISASSEMBLY ................ 20
ASSEMBLY ......................................................... 22
POWER STEERING OIL PUMP ............................... 27
On-Vehicle Inspection and Service ......................... 27
OIL PUMP PULLEY HYDRAULIC PRESSURE
INSPECTION ...................................................... 27
Removal and Installation (QR20DE and QR25DE
Engine Models) ....................................................... 27
REMOVAL ........................................................... 27
INSTALLATION ................................................... 27
Disassembly and Assembly(QR20DE and
QR25DE Engine Models) ....................................... 28
INSPECTION BEFORE DISASSEMBLY ............. 28
DISASSEMBLY ................................................... 28
INSPECTION AFTER DISASSEMBLY ................ 29
ASSEMBLY ......................................................... 29
Removal and Installation (YD22DDTi Engine
Model) ..................................................................... 32
Disassembly and Assembly (YD22DDTi Engine
Model) ..................................................................... 33
INSPECTION BEFORE DISASSEMBLY ............. 33
DISASSEMBLY ................................................... 34
INSPECTION AFTER DISASSEMBLY ................ 35
ASSEMBLY ......................................................... 35

PS-2 HYDRAULIC LINE .................................................... 37
Component ............................................................. 37
REMOVAL AND INSTALLATION ........................ 43
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 44
Steering Wheel ....................................................... 44
Steering Angle ........................................................ 44Steering Column ..................................................... 44
Steering Outer Socket and Inner Socket ................. 44
Steering Gear .......................................................... 45
Oil Pump ................................................................. 45
Steering Fluid .......................................................... 45

PRECAUTIONS
PS-3
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EGS001FF
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
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 Steering SystemEGS00049

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

Observe the following precautions when disassembling.
–Before disassembly, thoroughly clean the outside of the unit.
–Disassembly should be done in a clean work area. It is important to prevent the internal parts from becom-
ing contaminated by dirt or other foreign matter.
–For easier and proper assembly, place disassembled parts in order on a parts rack.
–Use nylon cloth or paper towels to clean the parts; common shop rags can leave lint that might interfere
with their operation.
–Do not reuse non-reusable parts.
–Before assembling, apply the specified grease to the directed parts.

PS-4
PREPARATION

PREPARATIONPFP:00002
Special Service Tools [SST]EGS0004A
Tool number
Tool nameDescription
ST3127S000
Preload gauge
1. GG9103000
Torque wrench
2. HT62940000
Socket adapter
3. HT62900000
Socket adapterInspecting of steering wheel rotating torque
and rotating torque for ball joint
ST27180001
Steering wheel pullerRemoving steering wheel
KV489Q0020
Teflon ring correcting tool
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
C: 100 mm (3.94 in)Installing rack Teflon ring
KV48103400
Preload adapterInspecting rotating torque
KV48103500
Oil pressure gauge
KV48102500
Hydraulic pressure gauge adapter
1. KV48102500−01
Eye joint
2. KV48102500−02
Flare joint
3. KV48102500−03
Bolt
4. KV48102500−04
WasherMeasuring oil pump relief pressure
KV48105210
Sprocket holderRemoving power steering oil pump
S-NT541
S-NT544
S-NT550
ZZA0824D
ZZA0839D
ZZA1191D

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PS-5
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Trouble shooting ChartEGS000A9
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-21PS-21PS-21PS-6PS-8PS-8
EM-13
,EM-140PS-8PS-14PS-16PS-13PS-11PS-18
NVH in PR section
NVH in RFD section
NVH in FAX, RAX, FSU, RSU section
NVH in WT section
NVH in WT section
NVH in FAX section
NVH in BR section
Possible cause and SUSPECTED PARTS
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness or tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
AXLE AND SUSPENSION
TYRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
Symptom STEERINGNoise× × ××××× × × ×××××× ×
Shake××× × ×××× ×
Vibration××××× × ×× ×
Shimmy××× × ××× ×
Judder× × ××× ×

PS-6
POWER STEERING FLUID

POWER STEERING FLUIDPFP:KLF20
Checking Fluid LevelEGS001BV

Check fluid level with engine stopped.

Make sure that fluid level is between MIN and MAX.

Fluid levels at HOT and COLD are different. Do not confuse
them.
CAUTION:

The fluid level should not exceed the MAX line. Excessive
fluid will cause fluid leakage from the cap.

Do not reuse drained power steering fluid.

Recommended fluid is Type DEXRONTM III or equivalent.
Checking Fluid LeakageEGS001BW
Check hydraulic connections for fluid leakage, cracks, damage,
looseness, or wear.
1. Run engine until the fluid temperature reaches 50 to 80° C (122
to 176°F) in reservoir tank, and keep engine speed idle.
2. Turn steering wheel several times from full left stop to full right
stop.
3. Hold steering wheel at each lock position for five seconds and
carefully, check for fluid leakage.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not overtighten con-
nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to PS-27, "
POWER STEERING OIL
PUMP" .
6. Check steering gear boots for accumulation of fluid indicating from steering gear.
Air Bleeding Hydraulic SystemEGS001BX
If air bleeding is not complete, the following symptoms can be observed.

Bubbles are created in reservoir tank.

Clicking noise can be heard from oil pump.

Excessive buzzing in the oil pump.
NOTE:
Fluid noise may occur in the steering gear or oil pump. This does not affect performance or durability of
the system.
1. Turn steering wheel several times from full left stop to full right stop with engine off.
CAUTION:
Turn steering wheel while filling reservoir tank with fluid so as not to lower fluid level below the
MIN line.
2. Start engine and hold steering wheel at each lock position for 3 seconds at idle to check for fluid leakage.
3. Repeat step 2 above several times at approximately 3 second intervals.
CAUTION:
Do not hold the steering wheel in a locked position for more than 10 seconds. (There is the possi-
bility that oil pump may be damaged.)
4. Check fluid for bubbles and while contamination.HOT : Fluid temperature 50 - 80 °C (122 - 176°F)
COLD : Fluid temperature 0 - 30°C (32 - 86°F)
SGIA0232J
SGIA0506E

POWER STEERING FLUID
PS-7
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5. Stop engine if bubbles and white contamination do not drain out. Perform steps 2 and 3 above after wait-
ing until bubbles and white contamination drain out.
6. Stop the engine, and then check fluid level.

PS-8
STEERING WHEEL

STEERING WHEELPFP:48430
On-Vehicle Inspection and ServiceEGS001BY
CHECKING CONDITION OF INSTALLATION

Check installation conditions of steering gear assembly, front suspension, axle and steering column.

Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.

Check steering gear assembly mounting bolts and nut for looseness. Refer to PS-16, "COMPONENT" .
CHECKING STEERING WHEEL PLAY

Turn steering wheel so that front wheels come to the straight-ahead position. Start engine and lightly turn
steering wheel to the left and right until front wheels start to move. Measure steering wheel movement on
the outer circumference.

When the measurement value is outside the standard value, check backlash for each joint of steering col-
umn and installation condition of steering gear assembly.
CHECKING NEUTRAL POSITION STEERING WHEEL

Make sure that steering gear assembly, steering column and steering wheel are installed in the correct
position.

Perform neutral position inspection after wheel alignment. Refer to FSU-6, "Wheel Alignment" .

Set vehicle to the straight-ahead position and confirm steering wheel is in the neutral position.

Loosen outer socket lock nut and turn inner socket to left and right equally to make fine adjustments if
steering wheel is not in the neutral position.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level and dry surface, set parking brake.
2. Start engine.
3. Bring power steering fluid up to adequate operating temperature. [Make sure temperature of fluid is
approximately 50 to 80°C (122 to 176°F).]
4. Check steering wheel turning force when steering wheel has
been turned 360° from neutral position.
NOTE:

Multiply the distance (L) from the hook of spring scale to the
center of steering wheel by the measurement value with a
spring scale.

Perform the following manner when the guideline value is
hard to be measured.
a. Park vehicle on a level and dry surface, set parking brake.
b. Remove driver air bag module. Refer to SRS-30, "
DRIVER AIR BAG MODULE" .
c. Start engine at idle, then check steering wheel turning force with
pre-load gauge [SST].
5. If steering wheel turning force is out of the specification, check
rack sliding force and relief hydraulic pressure of oil pump.
Regarding relief hydraulic pressure of oil pump, refer to PS-27,
"OIL PUMP PULLEY HYDRAULIC PRESSURE INSPECTION" .
a. Disconnect lower shaft and steering knuckle from steering gear
assembly. Refer to FAX-7, "
Removal and Installation" , PS-11,
"COMPONENT" . Steering wheel axial end play : 0 mm (0 in)
Steering wheel play : 0 - 35 mm (0 - 1.38 in)
Steering wheel
turning force: 36 N (3.7 kg, 8.2 lb) or less
Steering wheel
turning force: 706 N·cm (72 kg-cm, 62 in-lb)
SST491B
SGIA1050J