2003 NISSAN X-TRAIL brake sensor

TF-28
TROUBLE DIAGNOSIS

4WD Control Unit Input/Output Signal Reference ValuesEDS001VK
4WD CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
Monitored item [Unit] Content Condition Display value
FR RH SENSOR [km/h] or [mph]Wheel speed (Front wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
FR LH SENSOR [km/h] or [mph]Wheel speed (Front wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR RH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR LH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
BATTERY VOLT [V]Power supply voltage for
4WD control unitIgnition switch: ON Battery voltage
THRTL POS SEN [%] Throttle opening conditionWhen depressing accelerator pedal
(Value rises gradually in response to
throttle position.)0 - 100%
ETS SOLENOID [A]Monitored value of current at
4WD solenoidEngine speed
: At idle2WD Approx. 0.000A
AUTO Approx. 0.000A
LOCK Approx. 0.000A
Engine speed
: 3,000 rpm or more con-
stant2WD Approx. 0.000A
AUTO Approx. 0.000 - 1.500A*
LOCK Approx. 2.800A
STOP LAMP SW [ON/OFF]Condition of brake pedal
operationBrake pedal: Depressed ON
Brake pedal: Released OFF
ENG SPEED SIG [RUN/STOP] Condition of engine runningEngine stopped
(Engine speed: Less than 400 rpm)STOP
Engine running
(Engine speed: 400 rpm or more)RUN
ETS ACTUATOR [ON/OFF]Operating condition of 4WD
actuator relay (integrated in
4WD control unit)Engine stopped (Ignition
switch: ON)OFF
Engine running ON
4WD WARN LAMP [ON/OFF] 4WD warning lamp condition4WD warning lamp: ON ON
4WD warning lamp: OFF OFF
4WD MODE SW [2WD/AUTO/
LOCK]Input condition from 4WD
mode switch4WD mode switch2WD 2WD
AUTO AUTO
LOCK LOCK

FRONT WHEEL HUB AND KNUCKLE
FAX-7
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FA X

FRONT WHEEL HUB AND KNUCKLEPFP:40202
On-Vehicle InspectionEDS0005R
Inspect to check that there is no excessive play, cracking, wear, or
other damage to front axle.

Turn front wheels (left/right) and check the play.

Check that no nails or other foreign objects are embedded.

Retighten all axle nuts and bolts to the specified torque.
FRONT WHEEL BEARINGS
With the vehicle raised, inspect the following.

Move wheel hub in the axial direction by hand. Check that there is no looseness of front wheel bearings.

Rotate wheel hub and check that there is no unusual noise or other irregular conditions. If there are any
irregular conditions, replace the wheel bearing.
Removal and InstallationEDS0005S
REMOVAL
1. Remove tyre. Remove brake hose lock plate from strut.
2. Remove brake caliper from steering knuckle. Hang it in a place where it will not interfere with work. Refer
to BR-27, "
FRONT DISC BRAKE" .
CAUTION:
Avoid depressing the brake pedal with brake caliper removed.
3. Remove wheel sensor from steering knuckle. Refer to BRC-116, "
WHEEL SENSORS" .
CAUTION:
Do not pull on wheel sensor harness.
SMA525A
Axial end play : 0.05 mm (0.002 in)
1. Steering knuckle 2. Splash guard 3. Wheel bearing assembly
4. Snap ring 5. Wheel hub 6. Hub bolt
7. Cotter pin
SDIA0131E

FRONT DRIVE SHAFT
FAX-11
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FA X

FRONT DRIVE SHAFTPFP:39100
Removal and InstallationEDS0005U
REMOVAL
1. Remove tyre from vehicle.
2. Remove cotter pin. Use a hub lock nut wrench to remove lock
nut.
3. Remove wheel sensor from steering knuckle. Refer to BRC-116,
"WHEEL SENSORS" .
4. Use a pitman arm puller to remove tie rod from steering knuckle.
5. Remove lock plate from strut. Disconnect brake hose from strut.
Refer to BR-11, "
Removal and Installation of Front Brake Piping
and Brake Hose" .
6. Remove steering knuckle and strut installation bolts and nuts.
CAUTION:
Do not apply an excessive angle (22° or more) to drive shaft
joint. Firmly support steering knuckle so that slide joint is not excessively extended.
7. Use a puller to remove drive shaft from steering knuckle.
8. As shown in the figure, use a wheel wrench or other tool to
remove drive shaft from transaxle.
CAUTION:

When removing drive shaft from vehicle, be careful to
avoid interfering with brake hose, wheel sensor harness,
and other parts.

When removing drive shaft, do not apply an excessive
angle (22° or more) to drive shaft joint. Also be careful
not to excessively extend slide joint.

Do not lift drive shaft, with axle attached, by grasping
counter shaft only.

Do not allow drive shaft, with transaxle inserted, to hang down without support for counter
shaft, wheel joints, and other parts.

When the drive shaft listed below have been removed, check that a circular clip is attached to the end.
1. Support bearing bracket 2. Side flange 3. Drive shaft
4. Cotter pin
SDIA2333E
SFA649A
MAA0384D

FAX-12
FRONT DRIVE SHAFT

×: Applicable
–: Not applicable

Remove installation bolts from right-side drive shaft support bearing bracket. Then remove bracket from
engine.

Remove installation bolts from right-side drive shaft and remove drive shaft from side shaft.
INSPECTION AFTER REMOVAL

Move joint in up/down, left/right, and axial directions. Check for
motion that is not smooth and for significant looseness.

Check for cracking and damage of boots, and for grease leak-
age.
INSTALLATION

Install support bearing bracket onto engine and tighten installation bolts to specified torque. Refer to FA X -
11 , "Removal and Installation" .

Install drive shaft to side shaft and tighten installation bolts to specified torque. Refer to FA X - 11 , "Removal
and Installation" .
1. In order to prevent damage to differential side oil seal, first fit a
protector onto oil seal before inserting drive shaft. Slide drive
shaft slide joint and tap with a hammer to install securely.
CAUTION:
Be sure to check that circular clip is securely fastened.
2. Insert drive shaft into steering knuckle. Install lock nut and then
temporarily tighten lock nut. Refer to FA X - 11 , "
Removal and
Installation" .
3. Install installation bolts for steering knuckle and strut.
4. Use lock plate to fix brake hose to strut.
5. Install tie rod to steering knuckle.
6. Install wheel sensor.
7. Tighten lock nuts to specified torque. Refer to FAX-11, "
Removal
and Installation" .
8. Install cotter pin.
CAUTION:
Discard the old cotter pin; replace with a new one.
Engine typeDrive shaft with circular clip
Right Left
QR20DE and QR25DE –×
YD22DDTi –×
RAA0030D
Model type Protector SST No.
RH KV38107800
LH KV38105500
SDIA0593E
SDIA0603E

WHEEL HUB (4WD)
RAX-7
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RAX

REMOVAL
1. Remove tyre.
2. Remove wheel hub lock nut.
CAUTION:
Discard the old hub lock nut; replace with new one.
3. Remove brake caliper from axle housing and hang it up some-
where.
CAUTION:
Avoid depressing the brake pedal while the brake caliper is
removed.
4. Remove disc rotor and parking brake assembly from back plate
and axle housing.
5. Remove wheel sensor from axle housing.
6. Remove axle housing from strut.
7. Remove nut and bolt from axle housing side of radius rod.
8. Remove nuts and bolts from axle housing side of front and rear parallel link. Remove axle housing from
vehicle.
INSTALLATION

Refer to component parts drawing for tightening torque. For installation, follow removal procedure in
reverse order.
Disassembly and AssemblyEDS00067
DISASSEMBLY
1. Set axle housing on bench vise. As shown in the figure, use
attachment (SST) and sliding hammer (SST) to remove wheel
hub and bearing assembly from axle housing.
CAUTION:
When placing onto bench vise, be careful not to damage
strut mounting surface of steering knuckle. Use an alumi-
num plate or another suitable tool.
2. Use a bearing replacer (suitable tool), puller (suitable tool), and
drift (SST) to remove inner race of outer-wheel bearing from
wheel hub.
3. Remove back plate installation bolt and anchor block. Remove
back plate from axle housing. Refer to PB-4, "
Components"
4. Use a flat-bladed screwdriver or similar tool to remove snap ring.
SRA711A
FAC0104D
SDIA0154E

FSU-8
COIL SPRING AND SHOCK ABSORBER

COIL SPRING AND SHOCK ABSORBERPFP:54302
Removal and InstallationEES00074
REMOVAL
1. Remove tyre. Remove brake caliper and hung it aside.
CAUTION:
Avoid depressing brake pedal with brake caliper removed.
2. Remove electrical wires of wheel sensor from strut.
3. Remove brake hose lock plate.
4. Remove mounting bolts and nuts securing steering knuckle to strut.
5. Remove mounting nuts on upper mounting plate and remove upper mounting plate and strut from vehicle.
INSTALLATION

Refer to FSU-5, "Components" in “Front Suspension Assembly” for tightening torque. Tighten in the
reverse order of removal.

Be sure arrows on strut mount insulator and spring upper seat
are positioned as shown. Also be sure notch in strut spacer is
positioned as shown. Then install strut.

Assemble upper mounting plate with its notch facing toward the
outside.
Disassembly and AssemblyEES00075
DISASSEMBLY
1. Install strut attachment (SST) to strut and fix it in a vise.
CAUTION:
When installing strut attachment (SST), wrap a shop cloth
around strut to protect it from damage.
2. Slightly loosen piston rod lock nut.
WARNING:
Do not remove piston rod lock nut completely. If it is
removed completely, coil spring jumps out and may cause
serious damage or injury.
3. Compress coil spring using a spring compressor.
WARNING:
Make sure that the pawls of the two spring compressors are firmly hooked on the spring. The
spring compressors must be tightened alternately so as not to tilt the spring.
4. After making sure coil spring is free between upper and lower seats after Step 3. Remove piston rod lock
nut.
5. Remove small parts on strut.

Remove strut spacer, strut mount insulator, strut mounting insulator bracket thrust bearing, spring upper
seat, and upper rubber seat. Then remove coil spring.
6. Remove bound bumper from spring upper seat.
7. Gradually release spring compressor (commercial service tool), and remove coil spring.
INSPECTION AFTER DISASSEMBLY
Strut

Check strut for deformation, cracks, and damage, and replace if necessary.

Check piston rod for damage, uneven wear, and distortion, and replace if necessary.

Check welded and sealed areas for oil leakage, and replace if necessary.
SEIA0123E
SEIA0124E

REAR SUSPENSION MEMBER
RSU-13
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RSU

REAR SUSPENSION MEMBERPFP:55501
Removal and InstallationEES0007M
REMOVAL
1. Remove tyre. Raise vehicle.
2. Remove cotter pin. Remove wheel hub lock nut by using a wheel hub lock nut wrench.
3. Remove wheel sensor and wiring.
4. Remove brake caliper and brake hose lock plate, and hang them aside.
5. Remove mounting bolts and nuts on lower portion of strut.
6. Remove axle-side mounting bolts of parallel link and remove rear drive shaft from axle housing.
7. Remove suspension member-side mounting bolt of parallel link and remove parallel link from suspension
member.
8. Remove mounting bolts and nuts on lower portion of strut.
CAUTION:
After removing drive shaft, position axle housing onto strut.
9. Remove propeller shaft.
10. Remove rear exhaust tube.
11. Remove electronically controlled coupling connector and air breather hose from final drive.
12. Set a jack under rear final drive.
13. Remove front and rear mounting bolts from rear final drive.
14. Remove rear final drive from suspension member.
15. Place jack onto rear suspension member. Remove rear suspension member mounting bolts. Lower jack
slowly to remove rear suspension member from vehicle.
INSTALLATION

Refer to RSU-5, "Components" for tightening torque. Install in the reverse order of removal.

After installation, perform final tightening of each part under unladen conditions with tyre on ground.
Check wheel alignment. RSU-6, "
Wheel Alignment" .

BR-14
BRAKE MASTER CYLINDER

BRAKE MASTER CYLINDERPFP:46010
ComponentsEFS000CB
Removal and InstallationEFS001CG
REMOVAL
CAUTION:
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wipe it off immediately and wash it away with water.
1. Drain brake fluid.
2. Remove fluid level sensor harness connector.
3. Using a flare nut wrench, disconnect master cylinder assembly and brake tube.
4. First remove master cylinder assembly mounting nuts. Then remove master cylinder assembly.
INSTALLATION
1. Connect brake tube to master cylinder assembly and temporarily tighten flare nut by hand.
2. Connect master cylinder assembly to brake booster assembly and tighten mounting nuts to the specified
torque.
3. Tighten brake tube flare nuts.
4. Connect fluid level sensor harness connector.
1. Reservoir tank 2. Reservoir cap 3. Oil strainer
4. Pin 5. Cylinder body 6. Piston stopper (Some models with
ABS does not apply.)
7. Grommet 8. O-ring 9. Secondary piston assembly
10. Primary piston assembly 11. Snap ring 12. Guide assembly
13. Plate 14. Stopper cap 15. Primary piston assembly
16. Secondary piston assembly
SFIA1800E
: 15 - 17 N·m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)