wheel torque NISSAN LATIO 2008 Service Owner's Manual

GI-1
GENERAL INFORMATION
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SECTION GI
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CONTENTS
GENERAL INFORMATION
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Description ................................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
2
General Precaution ...................................................3
Precaution for Three Way Catalyst ...........................4
Precaution for Fuel (Unleaded Regular Gasoline
Recommended) .........................................................
4
Precaution for Multiport Fuel Injection System or
Engine Control System .............................................
5
Precaution for Hoses .................................................5
Precaution for Engine Oils ........................................6
Precaution for Air Conditioning .................................6
HOW TO USE THIS MANUAL ............................7
Description ................................................................7
Terms ........................................................................7
Units ..........................................................................7
Contents ....................................................................7
Relation between Illustrations and Descriptions .......8
Component ................................................................8
How to Follow Trouble Diagnosis ..............................9
How to Read Wiring Diagram ..................................13
Abbreviations ..........................................................20
SERVICE INFORMATION FOR ELECTRICAL
INCIDENT ...........................................................
22
How to Check Terminal ...........................................22
How to Perform Efficient Diagnosis for an Electri-
cal Incident ..............................................................
25
Control Units and Electrical Parts ............................32
CONSULT-III CHECKING SYSTEM .................35
Description ...............................................................35
Function and System Application ............................35
CONSULT-III Data Link Connector (DLC) Circuit ....36
LIFTING POINT .................................................38
Special Service Tool ................................................38
Garage Jack and Safety Stand and 2-Pole Lift .......38
Board-On Lift ...........................................................39
TOW TRUCK TOWING .....................................40
Tow Truck Towing ...................................................40
Vehicle Recovery (Freeing a Stuck Vehicle) ...........40
TIGHTENING TORQUE OF STANDARD
BOLTS ...............................................................
41
Tightening Torque Table .........................................41
RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS ...............................................
42
Recommended Chemical Product and Sealant .......42
IDENTIFICATION INFORMATION ....................43
Model Variation ........................................................43
Dimensions ..............................................................46
Wheels & Tires ........................................................46
TERMINOLOGY ................................................47
SAE J1930 Terminology List ...................................47

CHASSIS AND BODY MAINTENANCE
MA-23
< SERVICE INFORMATION >
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2. Stop engine.
3. Drain A/T fluid by removing the drain plug. Reinstall the drain plug to the specified torque.
CAUTION:
Do not reuse drain plug gasket.
4. Refill the transaxle with new specified A/T fluid through the A/T fluid charging pipe. Always refill the tran-
saxle with the same volume of A/T fluid that was drained out.
5. Run engine at idle speed for 5 minutes.
6. Check A/T fluid level and condition. Refer to MA-22, "
Checking A/T Fluid" .
Balancing WheelsINFOID:0000000001704749
Adjust wheel balance using road wheel center.
CAUTION:
• Be careful not to scratch the road wheel during removal.
• Use clip-on type wheel balance weights only.
Wheel balance (Maximum allowable unbalance):
RotationINFOID:0000000001704750
• Follow the maintenance schedule for tire rotation service intervals.
Refer to MA-6
.
• Do not include the T-type spare tire when rotating tires.
CAUTION:
• When installing wheels, tighten them diagonally by dividing
the work two to three times in order to prevent the wheels
from developing any distortion.
• Be careful not to tighten wheel nut at torque exceeding the
specification to prevent damage of disc rotor.
Checking Brake Fluid Level and LeaksINFOID:0000000001704751
• If fluid level is extremely low, check brake system for leaks.Drain plug: Refer to AT-230, "
Component" .
Fluid grade and capacity: Refer to MA-10
.
Maximum allowable unbalanceDynamic (At rim flange) Less than 5 g (0.18 oz) (one side)
Static (At rim flange) Less than 10 g (0.35 oz)
Wheel nut : 113 N·m (12 kg-m, 83 ft-lb)SMA829C
SBR451D

PS-4
< SERVICE INFORMATION >
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000001703856
The actual shapes of Kent-Moore tools may differ from those of special tools illustrated here.
Commercial Service ToolINFOID:0000000001703857
Tool number
(Kent-Moore No.)
Tool nameDescription
ST3127S000
(J-25742-1)
Preload gauge
(J-25765-A)
1. GG91030000
Torque wrench
2. HT62940000
(—)
Socket adapter (1/2")
3. HT62900000
(—)
Socket adapter (3/8")Inspecting rotating torque for steering column
assembly and pinion assembly
KV40107300
(—)
Boot Band crimping toolInstalling boot bands
KV48103400
(—)
Preload adapterInspecting of rotating torque for pinion assem-
bly
S-NT541
ZZA1229D
ZZA0824D
Tool number
Tool nameDescription
Spring gauge Inspecting steering wheel turning force and
power steering gear linkage
Power toolRemoving nuts and bolts
LST025
PBIC0190E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PS-5
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000001703858
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-13PS-13PS-6PS-6PS-6PS-9
PS-12
, PS-13PS-9PS-9PS-13
FAX-4, "
NVH Troubleshooting Chart
"
FSU-5, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED
PA R T S
Outer/Inner socket ball joint swinging torque
Outer/Inner socket ball joint end play
Steering wheel play
Steering gear pinion rotating torque
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting loosenesss
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
WHEEL HUB
SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
SymptomNoise××× × ××××× ×
Shake××× ××××× ×
Vibration××××× ××× ×
Shimmy××× × ×××× ×
Shudder× × ×××× ×

PS-10
< SERVICE INFORMATION >
STEERING COLUMN
8. Remove bolt of intermediate shaft (upper side), and then remove intermediate shaft from steering column
assembly.
9. Remove steering column assembly mounting nuts, and then remove steering column assembly from vehi-
cle.
10. Remove bolt of intermediate shaft (lower side), and then remove intermediate shaft from vehicle.
11. Remove screws of bracket and EPS control unit, and then remove bracket and EPS control unit from
steering column assembly.
INSPECTION AFTER REMOVAL
• Check each part of steering column assembly, EPS control unit and intermediate shaft for damage and .
replace as necessary.
• Measure the length “L” as shown, if vehicle has been involved in a
minor collision. Replace steering column assembly (with motor,
reduction gear, sensor) if outside the standard.
• Check tilt mechanism for damage or other malfunctions. Replace
steering column assembly (with motor, reduction gear, sensor) as
necessary.
• Measure steering column assembly rotating torque using Tool. Replace steering column assembly (with
motor, reduction gear, sensor) if outside the standard.
INSTALLATION
Installation is in the reverse order of removal.
• Installation is in the reverse order of removal. For tightening torque, refer to "COMPONENT".
• When tightening bolt (intermediate shaft lower side), tighten it by hand first, and make sure there is no feel-
ing of sticking or galling before final tightening.
CAUTION:
Insert bolt in the proper direction. (Do not insert it from the other side.)
• When connecting intermediate shaft upper side (1) and column
shaft, make sure the bolt is securely seated in groove (A) of col-
umn shaft (A) before final tightening.
INSPECTION AFTER INSTALLATION
• Rotate steering wheel to check for decentered condition, binding, noise or excessive steering effort.
• After installing steering column assembly, perform self-diagnosis with CONSULT-II to ensure correct opera-
tion. Refer to STC-11, "
CONSULT-III Function (EPS)". Steering column
length “L”Minimum 462.1 mm (18.19 in)
Nominal 464.1 mm (18.27 in)
Maximum 466.1 mm (18.35 in)
Tool number : ST3127S000 (J-25742-1)
Rotating torque : 0 - 2.1 N·m (0 - 0.21 kg-m, 0 - 18 in-lb)
SGIA1293E
SGIA1295E

PS-12
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POWER STEERING GEAR
POWER STEERING GEAR
Removal and InstallationINFOID:0000000001703862
COMPONENT
CAUTION:
Spiral cable may be cut if steering wheel turns while separating steering column assembly and steer-
ing gear assembly. Be sure to secure steering wheel using string to avoid turning.
REMOVAL
1. Set vehicle to the straight-ahead position.
2. Remove bolt of intermediate shaft (lower side), and then remove intermediate shaft from steering gear
pinion shaft.
3. Raise vehicle.
4. Remove tires from vehicle with a power tool.
5. Loosen steering outer socket (1) mounting nut.
6. Remove steering outer socket (1) from steering knuckle (2) so
as not to damage ball joint boot (3) using the ball joint remover
(suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover (suitable tool) from
suddenly coming off.
7. Remove front suspension member. Refer to FSU-10, "
Removal and Installation".
8. Remove mounting bolts and nuts of steering gear assembly.
INSTALLATION
Installation is in the reverse order of removal.
• For tightening torque, refer to "COMPONENT" .
• Clean mounting surface on the body side of fire wall seal when installing steering gear assembly.
1. Steering gear assembly 2. Washer 3. Fire wall seal
4. Heat insulator 5. Front suspension member
Refer to GI-7
for the symbols.
SGIA1296E
SGIA1298E

POWER STEERING GEAR
PS-15
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• Apply an axial load of 490 N (50 kg-f, 111 lb-f) to ball stud
using a dial gauge. Measure amount of stud movement, and
then make sure that the value is within the specified range.
Replace outer socket and inner socket if the measured value
is outside the standard.
ASSEMBLY
1. Apply recommended grease to teeth part and bush part of rack assembly, if necessary.
2. Apply recommended grease to back of rack assembly, if necessary.
3. Install inner socket to rack assembly. Torque to specified value while holding the flat portion of the rack
next to the inner socket using a suitable tool.
4. Apply recommended grease to inner socket. For application points, refer to "COMPONENT (R24K
TYPE)" .
5. Decide on the neutral position for the rack assembly.
6. Apply recommended grease to around retainer (3), then install
retainer (3), spring (4) and adjusting screw (1) to gear housing
assembly (5).
7. Apply recommended thread locking sealant to the thread (2
turns thread), and then screw in the adjusting screw (1) until it
reaches height “H” from gear housing assembly (5) measured
before disassembling.
8. Tighten lock nut to (2) the specified torque securing it to prevent
adjusting screw (1) from freewheeling condition.
9. Move rack assembly 10 strokes throughout the full stroke so that
the parts can fit with each other.
10. Using Tools A and B, measure rotating torque of pinion assem-
bly. If the measurement is outside of the specified range, read-
just pinion rotating torque. If the measurement is outside of the
specified range for readjust, replace steering gear assembly. Outer socket 0.5 mm (0.020 in) or less
Inner socket 0.2 mm (0.008 in) or less
SGIA0057E
Rack stroke “L” : 65.0 mm (2.559 in)
WGIA0185E
SGIA1300E
Tool numbers A: ST3127S000 (J-25742-1)
B: KV48103400 ( — )
Pinion rotating torque standard
Around neutral position
(within±100°) Average A0.3 - 1.5 N·m (0.03 - 0.15 kg-m, 3
- 13 in-lb)
Maximum variation C 1.86 N·m (0.19 kg-m, 16 in-lb)
MGIA0017E

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

SERVICE DATA AND SPECIFICATIONS (SDS)
PS-17
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SERVICE DATA AND SPECIFICATIONS (SDS)
Steering WheelINFOID:0000000001703864
Steering AngleINFOID:0000000001703865
Steering ColumnINFOID:0000000001703866
Steering Outer Socket and Inner SocketINFOID:0000000001703867
Steering wheel axial end play 0 mm (0 in)
Steering wheel play 0 - 35 mm (0 - 1.38 in)
Steering wheel turning force Less than 36 N (3.7 kg-f, 8.2 lb-f)
Inner wheel
Degree minute (Decimal degree)Minimum 35° 00′ (35.0°)
Nominal 38° 00′ (38.0°)
Maximum 39° 00′ (39.0°)
Outer wheel
Degree minute (Decimal degree)33° 00′ (33.0°)
Steering column length “L”Minimum 462.1 mm (18.19 in)
Nominal 464.1 mm (18.27 in)
Maximum 466.1 mm (18.35 in)
Steering column assembly rotating torque 0 - 2.1 N·m (0 - 0.21 kg-m, 0 - 18 in-lb)
Tilt operating range20 mm (0.79 in)
SGIA1293E
Steering gear typeR24K
Outer socket ball studSwinging torque 0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3.0 - 25 in-lb)
Measurement on spring balance
Measuring point: ball stud upper side6.0 - 58 N (0.61 - 5.91 kg-f, 1.35 - 13.03 lb-f)
Axial end play 0.5 mm (0.020 in) or less
Inner socket ball jointSwinging torque 0.5 - 5.0 N·m (0.06 - 0.51 kg-m, 5 - 44 in-lb)
• Measurement on spring balance
• Measuring point at *mark shown4.3 - 43.5 N (0.44 - 4.44 kg-f, 0.97 - 9.79 lb-f)
Axial end play 0.2 mm (0.008 in) or less

RSU-8
< SERVICE INFORMATION >
SHOCK ABSORBER
SHOCK ABSORBER
Removal and InstallationINFOID:0000000001703739
REMOVAL
1. Remove rear tires from vehicle using power tool.
2. Remove wheel sensor from wheel hub and bearing assembly and rear suspension beam. Refer to BRC-
32 .
CAUTION:
Do not pull on wheel sensor harness.
3. Remove shock absorber mask from trunk side finisher using a flat-bladed screwdriver. Refer to EI-51
.
CAUTION:
Wrap the tip of a screwdriver with cloth to avoid damaging components.
4. Set jack under rear suspension beam.
5. Remove upper nut of the shock absorber, and then remove
washer (upper), bushing (upper) from shock absorber.
6.
Remove shock absorber lower side bolt.
7. Gradually lower the jack, and remove the bushing (lower),
washer (lower), distance tube, bound bumper cover, bound
bumper and shock absorber from vehicle.
INSPECTION AFTER REMOVAL
Shock Absorber
Check the following:
• Shock absorber for deformation, cracks or damage, and replace if necessary.
• Piston rod for damage, uneven wear or distortion, and replace if necessary .
Bound Bumper and Bushing
Check bound bumper and bushing for cracks, deformation or other damage, and replace applicable parts if
necessary .
INSTALLATION
• Installation is in the reverse order of removal. For tightening torque, refer to RSU-7, "Component" .
SEIA0147J
SEIA0146J