2008 NISSAN LATIO air suspension

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
RAX-3
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000001703711
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
RAX-4—
RAX-4
RSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Parts interference
Wheel bearing damage
REAR SUSPENSION
TIRES
ROAD WHEEL
BRAKES
STEERING
Symptom REAR AXLENoise×× ×××××
Shake×× ×××××
Vibration×× ×× ×
Shimmy×× ×××××
Shudder× ×××××
Poor quality ride or handling××××××

RSU-1
SUSPENSION
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SECTION RSU
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RSU
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PCONTENTS
REAR SUSPENSION
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution for Rear Suspension ...............................2
PREPARATION ...................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
REAR SUSPENSION ASSEMBLY .....................5
On-Vehicle Inspection and Service ...........................5
Wheel AlignmentInspection ......................................5
Component ...............................................................7
SHOCK ABSORBER .........................................8
Removal and Installation ..........................................8
COIL SPRING ...................................................10
Removal and Installation .........................................10
REAR SUSPENSION BEAM ............................11
Removal and Installation .........................................11
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
12
Wheel Alignment (Unladen*) ...................................12
Wheelarch Height (Unladen*) ..................................12

RSU-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001703732
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
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 har-
ness connectors.
Precaution for Rear SuspensionINFOID:0000000001703733
• When installing the rubber bushings, the final tightening must be done under unladen condition and with the
tires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare
tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Caulking nuts are not reusable. Always use new caulking nuts for installation. New caulking nuts are pre-
oiled, do not apply any additional lubrication.

RSU-4
< SERVICE INFORMATION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000001703735
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
RSU-7RSU-8RSU-8RSU-8RSU-10RSU-7RSU-5RSU-4WT-4WT-4BR-4PS-5
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
REAR AXLE
TIRES
ROAD WHEEL
BRAKES
STEERING
SymptomNoise×××××× ×××××
Shake×××× × ×××××
Vibration××××× ×× ×
Shimmy×××× ××××××
Judder ××× ×××××
Poor quality ride or handling××××× ××××

REAR SUSPENSION ASSEMBLY
RSU-5
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REAR SUSPENSION ASSEMBLY
On-Vehicle Inspection and ServiceINFOID:0000000001703736
Make sure the mounting conditions (looseness, backlash) of each component and component conditions
(wear, damage) are within specifications.
SHOCK ABSORBER INSPECTION
Check shock absorber for oil leakage, damage and replace it if necessary.
Wheel AlignmentInspectionINFOID:0000000001703737
DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
PRELIMINARY
Check the following:
1. Tires for improper air pressure and wear.
2. Road wheels for runout. Refer to WT-5
.
3. Wheel bearing axial end play. Refer to RAX-4, "
On-Vehicle Inspection and Service" .
4. Shock absorber operation.
5. Each mounting part of suspension for looseness and deformation.
6. Rear suspension beam for cracks, deformation, and other damage.
7. Vehicle height (posture).
GENERAL INFORMATION AND RECOMMENDATIONS
1. A Four-Wheel Thrust Alignment should be performed.
• This type of alignment is recommended for any NISSAN vehicle.
• The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel
is centered.
• The alignment machine itself should be capable of accepting any NISSAN vehicle.
• The alignment machine should be checked to ensure that it is level.
2. Make sure the alignment machine is properly calibrated.
• Your alignment machine should be regularly calibrated in order to give correct information.
• Check with the manufacturer of your specific alignment machine for their recommended Service/Cali-
bration Schedule.
THE ALIGNMENT PROCESS
IMPORTANT: Use only the alignment specifications listed in this Service Manual. Refer to RSU-12, "Wheel
Alignment (Unladen*)" .
1. When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or
minus, Go/No Go). Do NOT use these indicators.
• The alignment specifications programmed into your alignment machine that operate these indicators
may not be correct.
• This may result in an ERROR.
2. Some newer alignment machines are equipped with an optional “Rolling Compensation” method to “com-
pensate” the sensors (alignment targets or head units). Do NOT use this “Rolling Compensation”
method.
• Use the “Jacking Compensation” method. After installing the alignment targets or head units, raise the
vehicle and rotate the wheels 1/2 turn both ways.
• See Instructions in the alignment machine you are using for more information.
CAMBER INSPECTION

REAR SUSPENSION BEAM
RSU-11
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REAR SUSPENSION BEAM
Removal and InstallationINFOID:0000000001703741
REMOVAL
1. Remove rear tires from vehicle using power tool.
2. Separate parking brake rear cable from rear drum brake and rear suspension beam. Refer to PB-4
.
3. Remove wheel sensor and wheel sensor harness from wheel hub and bearing assembly and rear suspen-
sion beam. Refer to BRC-32
.
4. Remove lock plate and separate brake tube from brake hose.
Refer to BR-10
.
5. Remove wheel hub and bearing assembly and back plate. Refer
to RAX-4
.
6. Set jack under rear suspension beam.
7. Remove coil spring (left/right). Refer to RSU-10, "
Removal and
Installation" .
8. Remove bolts between body and rear suspension beam
bracket. Refer to RSU-7, "
Component" .
9. Gradually lower the jack, and then remove rear suspension
beam from vehicle.
10. Remove the rear suspension beam bracket bolt and nut, and then remove rear suspension beam bracket
from rear suspension beam. Refer to RSU-7, "
Component" .
11. Remove brake tube protector from rear suspension beam..
INSPECTION AFTER REMOVAL
Check components for deformation, cracks, and other damage, and replace if necessary.
INSTALLATION
• Installation is in the reverse order of removal. For tightening torque, refer to RSU-7, "Component" .
• Perform final tightening of rear suspension beam and rear suspen-
sion beam bracket (rubber bushing) under unladen conditions with
tires on level ground.
• Refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding
Brake System" .
• Check the following after finishing work.
- Parking brake operation (stroke): Refer to PB-4, "
On-Vehicle Ser-
vice" .
- Wheel sensor harness for proper connection: Refer to BRC-32
.
MEIA0029E
MEIA0030E

PRECAUTIONS
STC-3
< SERVICE INFORMATION >[EPS]
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• Check any possible causes by interviewing the symptom and it’s condition from the customer if any
malfunction, such as EPS warning lamp turns ON, occurs.
• Check if air pressure and size of tires are proper, the specified part is used for the steering wheel,
and control unit is genuine part.
• Check if the connection of steering column assembly and steering gear assembly is proper (there is
not looseness of mounting bolts, damage of rods, boots or sealants, and leakage of grease, etc).
• Check if the wheel alignment is adjusted properly.
• Check if there is any damage or modification to suspension or body resulting in increased weight or
altered ground clearance.
• Check if installation conditions of each link and suspension are proper.
• Check if the battery voltage is proper
• Check connection conditions of each connector are proper.
• Before connecting or disconnecting the EPS control unit har-
ness connector, turn ignition switch “OFF” and disconnect
battery ground cable. Because battery voltage is applied to
EPS control unit even if ignition switch is turned “OFF”.
• When connecting or disconnecting pin connectors into or
from EPS control unit, take care not to damage pin terminals
(bend or break).
When connecting pin connectors, make sure that there are no
bends or breaks on EPS control unit pin terminal.
• Before replacing EPS control unit, perform EPS control unit
input/output signal inspection and make sure whether EPS
control unit functions properly or not. Refer to STC-9, "
EPS
Control Unit Input/Output Signal Reference Value".
SEF289H
SEF291H
SDIA1848E

WT-1
SUSPENSION
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SECTION WT
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WT
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PCONTENTS
ROAD WHEELS & TIRES
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
ROAD WHEEL ....................................................5
Inspection ..................................................................5
ROAD WHEEL TIRE ASSEMBLY ......................6
Balancing Wheels .....................................................6
Rotation .....................................................................6
TIRE PRESSURE MONITORING SYSTEM ........7
System Component ...................................................7
System Description ...................................................7
CAN COMMUNICATION .....................................9
System Description ...................................................9
TROUBLE DIAGNOSES ....................................10
Wiring Diagram- T/WARN - .....................................10
Terminal and Reference Value for BCM .................10
ID Registration Procedure .......................................11
Transmitter Wake Up Operation .............................12
CONSULT-III Function (BCM) .................................12
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
13
Preliminary Check ...................................................14
Self-Diagnosis .........................................................15
Flash Code/Symptom Chart ....................................16
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS .................................................
18
Data from Transmitter Not Being Received .............18
Transmitter Malfunction ...........................................18
Transmitter Pressure Malfunction ............................19
Vehicle Speed Signal ..............................................19
TROUBLE DIAGNOSIS FOR SYMPTOMS ......20
Low Tire Pressure Warning Lamp Does Not Come
On When Ignition Switch Is Turned On ...................
20
Low Tire Pressure Warning Lamp Stays On When
Ignition Switch Is Turned On ...................................
20
Low Tire Pressure Warning Lamp Flashes When
Ignition Switch Is Turned On ...................................
21
Hazard Warning Lamps Flash When Ignition
Switch Is Turned On ................................................
22
ID Registration Cannot Be Completed ....................22
REMOVAL AND INSTALLATION .....................23
Transmitter (Pressure Sensor) ................................23
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
25
Road Wheel .............................................................25
Tire ..........................................................................25