2008 NISSAN TIIDA FSU - 16

POWER STEERING GEAR
PS-13
< SERVICE INFORMATION >
C
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F
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MA
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PS
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• Check wheel alignment under unladen conditions with tires on level ground. Refer to FSU-6, "Wheel Align-
ment Inspection".
INSPECTION AFTER INSTALLATION
Rotate steering wheel to check for decentered condition, binding, noise or excessive steering effort.
Disassembly and AssemblyINFOID:0000000001703863
COMPONENT (R24K TYPE)
CAUTION:
Clean steering gear assembly with kerosene before disassembling.
DISASSEMBLY
1. Loosen outer socket lock nut, and then remove outer socket from inner socket.
2. Remove boot clamp, and then remove boot from inner socket.
CAUTION:
Do not damage inner socket and gear housing assembly when removing boot. Inner socket and
gear housing assembly must be replaced if inner socket and gear housing assembly are damaged
because it may allow foreign material to enter.
1. Outer socket 2. Inner socket 3. Rack assembly
4. Boot clamp (small diameter) 5. Boot 6. Boot clamp (large diameter)
7. Joint cover 8. Pinion seal 9. Snap ring
10. Pinion assembly 11. Gear housing assembly 12. Retainer
13. Spring 14. Adjusting screw 15. Lock nut
⇐ : Front
Refer to GI-7
for the symbols unless shown below.
:Apply Genuine Thread Locking Sealant, Three Bound 1141 or equivalent.
:1Apply Genuine Lithium Soap, Idemitsu Autorex A or equivalent.
:2Apply Genuine Lithium Soap, Wanlouver MO No.2 (manufactured by Kyoudouyushi) or equivalent.
:3Apply Genuine Lithium Soap, Multemp AC-P (manufactured by Kyoudouyushi) or equivalent.
WGIA0186E

PS-16
< SERVICE INFORMATION >
POWER STEERING GEAR
11. Set dial gauge to the back of rack assembly on the pinion
assembly side around the center of stroke. Measure displace-
ment of rack under torsional torque of ± 7.8 N·m (0.80 kg-m, 69
in-lb), and then check if it is within the standard value. If the
measurement is outside the standard value, adjust it again. After
the readjustment, if measurement is still outside the standard
value, replace steering gear assembly.
12. Install boot to gear housing assembly and inner socket.
13. Install boot clamp (1) to boot using Tool.
NOTE:
Install large diameter side boot clamp (1) securely to boot
groove, and crimp it so as to have clearance of 3 mm (0.12 in) or
less as shown.
14. Install joint cover (1) to gear housing assembly (2).
CAUTION:
Install joint cover so that the protrusion for locating is
securely set to gear housing groove.
15. Adjust inner socket to standard length “L”, and then tighten lock
nut to the specified torque. Refer to "COMPONENT (R24K
TYPE)". Check length of inner socket “L” again after tightening
lock nut. Make sure that the length is the standard.
CAUTION:
Adjust toe-in. Refer to FSU-6, "
Wheel Alignment Inspec-
tion". Length achieved after toe-in adjustment is not neces-
sarily the above value.Standard value : Less than 0.1 mm (0.004 in)
SGIA1301E
Tool number : KV40107300 ( — )
SGIA1302E
SGIA1303E
Inner socket length “L” : 57.8 mm (2.276 in)
SGIA0167E

STC-24
< SERVICE INFORMATION >[EPS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
DIAGNOSTIC PROCEDURE
1.CHECK EPS WARNING LAMP
Confirm EPS warning lamp during engine running.
Does EPS warning lamp turn OFF?
YES >> GO TO 2.
NO >> Go to STC-21, "
EPS Warning Lamp Does Not Turn OFF" .
2.CHECK WHEEL ALIGNMENT
Check wheel alignment. Refer to FSU-6, "
Wheel Alignment Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Adjust wheel alignment. Refer to FSU-6, "
Wheel Alignment Inspection" .
3.CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-9, "
EPS Control Unit Input/Output Signal Reference
Va l u e" .
OK or NG
OK >> GO TO 4.
NG >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
4.SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Check the steering wheel turning force because there may be mechanical malfunction. Refer to
PS-6, "
On-Vehicle Inspection and Service" .
Unbalance Steering Wheel Turning Force (Torque Variation)INFOID:0000000001703896
SYMPTOM:
Unbalance steering wheel turning force, while driving (Torque variation).
DIAGNOSTIC PROCEDURE
1.CHECK EPS WARNING LAMP
Confirm EPS warning lamp during engine running.
Does EPS warning lamp turn OFF?
YES >> GO TO 2.
NO >> Go to STC-21, "
EPS Warning Lamp Does Not Turn OFF" .
2.CHECK STEERING COLUMN INTERMEDIATE SHAFT
Check the connection between intermediate shaft and the mounting part of steering column assembly and
steering gear assembly. Refer to PS-9, "
Removal and Installation" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-9, "
EPS Control Unit Input/Output Signal Reference
Va l u e" .
OK or NG
OK >> GO TO 4.
NG >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
4.SYMPTOM CHECK

WT-4
< SERVICE INFORMATION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000001703747
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
FAX-5WT-5

WT-6
WT-25—
—
—
—
FAX-4, "
NVH Troubleshooting Chart
",
FSU-5, "
NVH Troubleshooting Chart
"
RAX-3, "
NVH Troubleshooting Chart
",
RSU-4, "
NVH Troubleshooting Chart
"
Refer to TIRES in this chart
Refer to ROAD WHEEL in this chart
FAX-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Out-of-round
Imbalance
Incorrect tire pressure
Uneven tire wear
Deformation or damage
Non-uniformity
Incorrect tire size
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEELS
DRIVE SHAFT
BRAKE
STEERING
SymptomTIRESNoise× ×××××× × × ××××
Shake× ××××× × × × ××××
Vibration××××××
Shimmy× ××××××× × × × ××
Shudder× ××××× × × × × ××
Poor quality ride
or handling× ××××× × × × ×
ROAD WHEELNoise× ×× × × × × ×××
Shake× ×× × × × × ×××
Shimmy, Shud-
der×××× ×××××
Poor quality ride
or handling××× × × × ×