Nissan Pathfinder 2003 User Manual
GI
FRONT & REAR SUSPENSION
MA
EM
CONTENTS
FRONT SUSPENSION ....................................................3
Precautions..................................................................3
PRECAUTIONS
Preparation ..................................................................3
SPECIAL SERVICE TOOLS
COMMERCIAL SERVICE TOOLS
Noise, Vibration and Harshness (NVH)
Troubleshooting...........................................................4
NVH TROUBLESHOOTING CHART
Components.................................................................5
.........................................................................5
2WD
.........................................................................6
4WD
On-vehicle Service.......................................................7
FRONT SUSPENSION PARTS
FRONT WHEEL ALIGNMENT
Coil Spring and Strut Assembly.................................10
COMPONENTS
REMOVAL
DISASSEMBLY
INSPECTION
ASSEMBLY
Stabilizer Bar .............................................................13
REMOVAL AND INSTALLATION
INSPECTION
Transverse Link and Lower Ball Joint.......................14
REMOVAL AND INSTALLATION
INSPECTION
Low Tire Pressure Warning System..........................16
SYSTEM COMPONENTS
SYSTEM DESCRIPTION
Trouble Diagnoses.....................................................18
WIRING DIAGRAM
LOW TIRE PRESSURE WARNING CONTROL
UNIT INPUT/OUTPUT SIGNAL STANDARD
ID REGISTRATION PROCEDURE
SELF-DIAGNOSIS
HOW TO PERFORM TROUBLE DIAGNOSIS FOR
QUICK AND ACCURATE REPAIR
PRELIMINARY CHECK
MALFUNCTION CODE/SYMPTOM CHART
Trouble Diagnoses for Self-diagnostic Items.............27
.........................................................3
........................................3
................................3
............................4
...................................7
.....................................8
.......................................................10
...............................................................12
........................................................12
...........................................................12
.............................................................13
...............................13
...........................................................14
...............................14
...........................................................15
.........................................16
..........................................16
..................................................18
..............20
............................20
...................................................23
.............................25
............................................26
...............27
SECTION
INSPECTION 1: TRANSMITTER OR TIRE
PRESSURE WARNING CONTROL UNIT
INSPECTION 2: TRANSMITTER-1
INSPECTION 3: TRANSMITTER-2
INSPECTION 4: LOW TIRE PRESSURE
WARNING CONTROL UNIT
Trouble Diagnoses for Symptoms.............................30
INSPECTION 1: WARNING LAMP DOES NOT
COME ON WHEN IGNITION SWITCH IS TURNED
.........................................................................30
ON.
INSPECTION 2: WARNING LAMP STAYS ON
WHEN IGNITION SWITCH IS TURNED ON.
INSPECTION 3: WARNING LAMP BLINKS WHEN
IGNITION SWITCH IS TURNED ON.
INSPECTION 4: TAIL LAMP BLINKS WHEN
IGNITION SWITCH IS TURNED ON.
INSPECTION 5: ID REGISTRATION CANNOT BE
COMPLETED.
Service Data and Specifications (SDS).....................34
GENERAL SPECIFICATIONS (FRONT)
WHEEL ALIGNMENT (UNLADEN*1)
LOWER BALL JOINT
WHEELARCH HEIGHT (UNLADEN*)
WHEEL RUNOUT AVERAGE*
REAR SUSPENSION.....................................................37
Precautions................................................................37
PRECAUTIONS
Preparation ................................................................37
COMMERCIAL SERVICE TOOLS
Noise, Vibration and Harshness (NVH)
Troubleshooting.........................................................37
Components...............................................................38
On-vehicle Service.....................................................38
REAR SUSPENSION PARTS
Removal and Installation...........................................39
Coil Spring and Shock Absorber ...............................40
COMPONENTS
REMOVAL AND INSTALLATION
INSPECTION
Upper Link, Lower Link and Panhard Rod................41
INSPECTION
.........................................................34
.......................................................37
.......................................................40
...........................................................41
...........................................................41
SU
...................27
............................28
............................29
......................................29
..............31
.........................33
.........................34
.....................34
..........................34
...............................................35
.........................35
..................................36
..............................37
...................................38
...............................41
LC
EC
FE
CL
MT
AT
TF
PD
AX
BR
ST
RS
BT
HA
SC
EL
IDX
CONTENTS (Cont’d)
BUSHING REPLACEMENT
INSTALLATION
Stabilizer Bar .............................................................42
REMOVAL AND INSTALLATION
........................................................42
.......................................41
...............................42
Low Tire Pressure Warning System..........................42
Service Data and Specifications (SDS).....................43
GENERAL SPECIFICATIONS (REAR)
.......................43
SU-2
FRONT SUSPENSION
Precautions
Precautions
PRECAUTIONS
I When installing rubber parts, final tightening must be car-
ried out under unladen condition* with tires on ground.
*Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
I Use flare nut wrench when removing and installing brake
tubes.
I After installing removed suspension parts, check wheel
SBR686C
alignment and adjust if necessary.
I Always torque brake lines when installing.
Preparation
SPECIAL SERVICE TOOLS
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
ST29020001
(J24319-01)
Ball joint remover
Description
Removing tie-rod outer end and lower ball joint
a: 34 mm (1.34 in)
b: 6.5 mm (0.256 in)
c: 61.5 mm (2.421 in)
GI
NASU0001
MA
EM
LC
EC
NASU0002
FE
CL
MT
AT
NT694
COMMERCIAL SERVICE TOOLS
Tool name Description
1 Flare nut crowfoot
2 Torque wrench
NT360
Spring compressor
NT717
TF
PD
NASU0003
AX
Removing and installing each brake piping
a: 10 mm (0.39 in)
BR
Removing and installing coil spring
ST
RS
BT
HA
SU-3
SC
EL
IDX
FRONT SUSPENSION
Noise, Vibration and Harshness (NVH) Troubleshooting
Noise, Vibration and Harshness (NVH)
Troubleshooting
NVH TROUBLESHOOTING CHART
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
=NASU0035
NASU0035S01
Reference page
SU-5, 38
Possible Cause and
SUSPECTED PARTS
Improper installation, looseness
Noise × × ×××× ×××× × × ××
Shake ×××× × × ×× × ×××
Vibration × × ××× × ×× × ×
Shimmy ×××× × × × ×××
Judder ××× × × ×××
SUSPENSION
Poor quality
ride or handling
× × ××× ×× × × ×
—
SU-10, 40
Shock absorber deformation,
damage or deflection
Bushing or mounting deterioration
—
—
SU-10, 40
Parts interference
Spring fatigue
Suspension looseness
SU-8
Incorrect wheel alignment
SU-8
SU-13, 42
Stabilizer bar fatigue
Out-of-round
—
———
Imbalance
Incorrect air pressure
Uneven tire wear
—
—
Deformation or damage
Non-uniformity
Incorrect tire size
AX-3
PD-4
PD-4
PROPELLER SHAFT
DIFFERENTIAL
DRIVE SHAFT
AX-3
in this chart.
Refer to SUSPENSION
AXLE
SUSPENSION
in this chart.
Refer to TIRES
TIRES
in this chart.
Refer to ROAD WHEEL
ROAD WHEEL
ST-6
BR-7
BRAKES
STEERING
Noise × ЧЧЧЧЧЧ ×××× × × ××
Shake × ЧЧЧЧЧ ×× ×× × × ××
Vibration ×××××× ×
Shimmy × ЧЧЧЧЧЧЧ × × × ××
Symptom
TIRES
Judder × ЧЧЧЧЧ × × × × ××
Poor quality
ride or handling
Noise × ×× × ×××× × × ××
Shake × ×× × × ×× × × ××
Shimmy, Jud-
der
Poor quality
ROAD WHEEL
ride or handling
×: Applicable
× ЧЧЧЧЧ × × × ×
×××××××××
×××××××
SU-4
FRONT SUSPENSION
Components
2WD
Components
NASU0004
NASU0004S01
GI
MA
EM
LC
EC
FE
CL
MT
AT
1. Strut mounting insulator
2. Spring upper seat
3. Bound bumper
4. Coil spring
5. Strut assembly
6. Stabilizer connecting rod
7. Bracket
8. Stabilizer bar
9. Transverse link
SFA743B
TF
PD
AX
BR
ST
RS
BT
HA
SU-5
SC
EL
IDX
Components (Cont’d)
FRONT SUSPENSION
4WD
NASU0004S02
1. Strut mounting insulator
2. Spring upper seat
3. Bound bumper
4. Coil spring
5. Strut assembly
6. Stabilizer connecting rod
7. Bracket
SU-6
SFA744B
8. Stabilizer bar
9. Transverse link
10. Drive shaft
FRONT SUSPENSION
On-vehicle Service
SMA525A
SFA392B
On-vehicle Service
FRONT SUSPENSION PARTS
Check front axle and front suspension parts for excessive play,
cracks, wear and other damage.
1. Shake each front wheel to check for excessive play.
2. Retighten all axle and suspensions nuts and bolts to the specified torque.
Tightening torque:
Refer to “Components”, SU-10.
3. Check strut (shock absorber) for oil leakage and other damage.
4. Check suspension ball joint for grease leakage and ball joint
dust cover for cracks and other damage.
If ball joint dust cover is cracked or damaged, replace ball joint
assembly.
5. Check suspension ball joint end play.
a. Jack up front of vehicle and set the stands.
b. Clamp dial indicator onto transverse link and place indicator tip
on lower edge of brake caliper.
c. Make sure front wheels are straight and brake pedal is
depressed.
NASU0005
GI
MA
EM
LC
EC
FE
CL
MT
AT
SFA745B
SFA746B
d. Place a pry bar between transverse link and knuckle.
e. While raising and releasing pry bar, observe maximum dial
indicator value.
Vertical end play:
0mm(0in)
If ball joint vertical end play exists, remove lower ball joint
assembly and recheck the ball joint. Refer to “Tranverse Link
and Lower Ball Joint”, SU-14.
6. Check spring height from top of wheelarch to ground using the
following procedure.
a. Park vehicle on a level surface with vehicle unladen*.
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
b. Check tires for proper inflation and wear (tread wear indicator
must not be showing).
c. Bounce vehicle up and down several times and measure
dimensions Hf and Hr. Refer to SDS, SU-35.
Spring height is not adjustable. If out of specification, check for
worn springs and suspension parts.
TF
PD
AX
BR
ST
RS
BT
HA
SC
EL
IDX
SU-7
On-vehicle Service (Cont’d)
FRONT SUSPENSION
SFA975B
FRONT WHEEL ALIGNMENT
NASU0006
Before checking front wheel alignment, be sure to make a preliminary inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand
tools and mats in designated positions.
Preliminary Inspection
NASU0006S01
1. Check tires for wear and improper inflation.
2. Check wheels for deformation, cracks and other damage.
If deformed, remove wheel and check wheel runout.
NOTE:
Measure both the inner and outer sides for the radial runout and
lateral runout, and confirm the figures are within the standards.
Wheel runout (Dial indicator value):
Refer to SDS, SU-36.
3. Check front wheel bearings for looseness.
4. Check front suspension for looseness.
5. Check steering linkage for looseness.
6. Check that front shock absorbers work properly.
7. Check vehicle posture (Unladen).
SFA894
Camber, Caster and Kingpin Inclination
NASU0006S02
Camber, caster and kingpin inclination are preset at factory
and cannot be adjusted.
1. Measure camber, caster and kingpin inclination of both right
and left wheels with a suitable alignment gauge.
Camber, Caster and Kingpin inclination:
Refer to SDS, SU-34.
2. If camber, caster or kingpin inclination is not within
specification, inspect front suspension parts. Replace damaged or worn out parts.
SU-8
FRONT SUSPENSION
On-vehicle Service (Cont’d)
SFA614B
SFA234AC
Toe-in
Measure toe-in using the following procedure.
WARNING:
I Always perform the following procedure on a flat surface.
I Make sure that no person is in front of the vehicle before
pushing it.
1. Bounce front of vehicle up and down to stabilize the posture.
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of the tread (rear side) of both tires at
the same height of hub center. This mark is a measuring point.
4. Measure distance “A” (rear side).
5. Push the vehicle slowly ahead to rotate the wheels 180
degrees (1/2 turn).
If the wheels have rotated more than 180 degrees (1/2 turn), try
the above procedure again from the beginning. Never push
vehicle backward.
6. Measure distance “B” (front side).
Total toe-in:
Refer to SDS, SU-34.
7. Adjust toe-in by varying the length of steering tie-rods.
a. Loosen lock nuts.
b. Adjust toe-in by screwing tie-rods in and out.
NASU0006S03
GI
MA
EM
LC
EC
FE
CL
MT
AT
TF
SFA749B
SFA486A
SFA439BA
Make sure both tie-rods are the same length.
Standard length “L”:
Refer to ST-33, “Steering Gear and Linkage”.
c. Tighten lock nuts to specified torque.
Lock nut tightening torque:
RefertoST-18,“POWERSTEERINGGEAR AND LINKAGE”.
Front Wheel Turning Angle
Turning angle is set by stroke length of steering gear rack and
cannot be adjusted.
1. Set wheels in straight-ahead position. Then move vehicle forward until front wheels rest on turning radius gauge properly.
2. Rotate steering wheel all the way right and left; measure turning angle.
Do not hold the steering wheel on full lock for more than 15
seconds.
Wheel turning angle (Full turn):
Refer to SDS, SU-34.
NASU0006S04
PD
AX
BR
ST
RS
BT
HA
SC
EL
IDX
SU-9
Coil Spring and Strut Assembly
COMPONENTS
2WD
FRONT SUSPENSION
Coil Spring and Strut Assembly
NASU0007
NASU0007S01
1. Spacer
2. Strut mounting insulator
3. Bracket
4. Strut mounting bearing
5. Spring upper seat
6. Bound bumper
7. Coil spring
8. (Polyurethane tube)
9. Strut assembly
10. Bracket
11. Lower ball joint assembly
12. Cotter pin
SU-10
SSU052
13. Transverse link
14. Stabilizer connecting rod
15. Stabilizer bar
16. Bushing
17. Bracket
18. Knuckle spindle
FRONT SUSPENSION
Coil Spring and Strut Assembly (Cont’d)
4WD
NASU0007S02
GI
MA
EM
LC
EC
FE
CL
MT
AT
1. Spacer
2. Strut mounting insulator
3. Bracket
4. Strut mounting bearing
5. Spring upper seat
6. Bound bumper
7. Coil spring
8. (Polyurethane tube)
9. Strut assembly
10. Bracket
11. Lower ball joint assembly
12. Cotter pin
13. Transverse link
14. Stabilizer connecting rod
15. Stabilizer bar
16. Bushing
17. Bracket
18. Knuckle spindle
19. Snap ring
20. Hub cap
21. Drive shaft
TF
PD
AX
BR
ST
RS
SSU053
BT
HA
SC
SU-11
EL
IDX
Coil Spring and Strut Assembly (Cont’d)
FRONT SUSPENSION
SFA956A
SSU002
REMOVAL
NASU0008
1. Remove stabilizer connecting rod.
2. Remove strut assembly fixing bolts and nuts (to hood-ledge).
Do not remove piston rod lock nut on vehicle.
DISASSEMBLY
NASU0009
1. Set strut assembly on vise, then loosen piston rod lock nut.
WARNING:
Do not remove piston rod lock nut at this time.
2. Compress spring with tool so that the strut mounting insulator
can be turned by hand.
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.
3. Remove piston rod lock nut.
SSU003
INSPECTION
Strut Assembly
NASU0010
NASU0010S01
I Check for smooth operation through a full stroke, both com-
pression and extension.
I Check for oil leakage on welded and gland packing portion.
I Check piston rod for cracks, deformation and other damage.
I Replace if necessary.
Strut Mounting Insulator and Rubber Parts
NASU0010S02
I Check cemented rubber-to-metal portion for separation and
cracks. Check rubber parts for deterioration.
I Replace if necessary.
Strut Mounting Bearing
NASU0010S03
I Check thrust bearing parts for abnormal noise and excessive
rattle in axial direction.
I Replace if necessary.
Coil Spring
NASU0010S04
I Check for cracks, deformation and other damage. Replace if
necessary.
SU-12
FRONT SUSPENSION
Coil Spring and Strut Assembly (Cont’d)
SFA725B
SFA664AA
ASSEMBLY
I When installing coil spring on strut, it must be positioned as
shown in the figure at left.
I Install upper spring seat with its cutout facing the inner side of
vehicle.
NASU0011
Stabilizer Bar
REMOVAL AND INSTALLATION
I Remove stabilizer bar and connecting rod.
NASU0012
GI
MA
EM
LC
EC
FE
CL
MT
AT
TF
SFA767B
SFA768B
PD
AX
I When installing stabilizer, make sure that paint mark and
bracket face in their correct directions.
BR
ST
RS
BT
I When removing and installing stabilizer bar fix portion A.
HA
SC
SFA769B
EL
IDX
SU-13
Stabilizer Bar (Cont’d)
SFA449BA
FRONT SUSPENSION
I Install stabilizer bar with ball joint socket properly placed.
INSPECTION
I Check stabilizer for deformation and cracks. Replace if neces-
sary.
I Check rubber bushings for deterioration and cracks. Replace
if necessary.
I Check ball joint can rotate in all directions. If movement is not
smooth and free, replace stabilizer bar connecting rod.
NASU0013
ARA027
SFA757B
Transverse Link and Lower Ball Joint
REMOVAL AND INSTALLATION
1. Separate drive shaft from knuckle. — 4WD —
Refer to AX-12, “Drive Shaft”.
2. Separate lower ball joint stud from knuckle.
3. Remove lower ball joint assembly from transverse link.
4. Remove transverse link.
5. During installation, final tightening must be carried out at curb
weight with tires on ground.
6. After installation, check wheel alignment.
Refer to “FRONT WHEELALIGNMENT”, “On-vehicle Service”,
SU-8.
NASU0014
SU-14
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