INFINITI FX35 2007 Service Manual

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING WT-7
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Revision: 2006 July 2007 FX35/FX45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNES000GL
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable
Reference page
FAX-4
,
FAX-10
, FSU-6
WT-8WT-9WT-41WT-10—
—
WT-41
NVH in PR section
NVH in RFD section
NVH in FAX and FSU section
NVH in RAX and RSU section Refer to TIRES in this chart.
Refer to ROAD WHEEL in this chart.
NVH in FAX, RAX sectionNVH in BR sectionNVH in PS section
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Out-of-round
Unbalance
Incorrect tire pressure
Uneven tire wear
Deformation or damage
Non-uniformity
Incorrect tire size
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEELS
DRIVE SHAFT
BRAKE
STEERING
Symptom TIRES Noise
× ×××××× ×××× ××××
Shake × ××××× ×× ×× ××××
Vibration ×××××××
Shimmy × ××××××× ×× × ××
Judder × ××××× × ×× × ××
Poor quality ride
or handling × ××××× × ×× ×
ROAD WHEEL Noise
× ×× × ××××× ×××
Shake × ×× × × ××× ×××
Shimmy, Judder × ×× × ××× ××
Poor quality ride
or handling × ×× × ×××

WT-8
ROAD WHEEL
Revision: 2006 July 2007 FX35/FX45
ROAD WHEELPFP:40300
InspectionNES000KX
ALUMINUM WHEEL
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.
a. Remove tire from aluminum wheel and mount on a tire balance machine.
b. Set dial indicator as shown in the illustration.
c. If the total runout value exceeds the limit, replace aluminum wheel.
STEEL WHEEL (FOR EMERGENCY USE)
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.
a. Remove tire from steel wheel and mount wheel on a tire balance machine.
b. Set two dial indicators as shown in the illustration.
c. Set each dial indicator to “0”.
d. Rotate wheel and check dial indicators at several points around the circumference of the wheel.
e. Calculate runout at each point as shown below.
f. Select maximum positive runout value and the maximum nega- tive value. Add the two values to determine total runout.
CAUTION:
In case a positive or negative value is not available, use the
maximum value (negative or positive) for total runout.
g. If the total runout value exceeds the limit, replace steel wheel. Lateral runout limit (A) : 0.3 mm (0.012 in)
Radial runout limit (B) : 0.3 mm (0.012 in)
SEIA0737E
Lateral runout limit (A) : ( + )/2
Vertical runout limit (B) : ( + )/2
Lateral runout limit (A) : 1.5 mm (0.059 in)
Vertical runout limit (B) : 1.5 mm (0.059 in)
SEIA0738E

ROAD WHEEL TIRE ASSEMBLY WT-9
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Revision: 2006 July 2007 FX35/FX45
ROAD WHEEL TIRE ASSEMBLYPFP:40300
Balancing Wheels (Bonding Weight Type)NES000KY
REMOVAL
Using releasing agent, remove double-faced adhesive tape from the road wheel.
CAUTION:

Be careful not to scratch the road wheel during removal.

After removing double-faced adhesive tape, wipe clean traces of releasing agent from the road
wheel.
WHEEL BALANCE ADJUSTMENT

If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode setting,
select and adjust a drive-in weight mode suitable for road wheels.
1. Set road wheel on tire balance machine using the center hole as a guide. Start the tire balance machine.
2. When inner and outer unbalance values are shown on the tire balance machine indicator, multiply outer unbalance value by 5/3 to determine balance weight that should be used. Select the outer balance weight
with a value closest to the calculated value above and install it to the designated outer position of, or at the
designated angle in relation to the road wheel.
CAUTION:

Do not install the inner balance weight before installing the outer balance weight.

Before installing the balance weight, be sure to clean the mating surface of the road wheel.
a. Indicated unbalance value × 5/3 = balance weight to be installed
Calculation example:
23 g (0.81 oz) × 5/3 = 38.33 g (1.35 oz)
37.5 g (1.32 oz) bal-
ance weight (closer to calculated balance weight value)
NOTE:
Note that balance weight value must be closer to the calculated
balance weight value.
Example:
36.2
35 g (1.23 oz)
36.3
37.5 g (1.32 oz)
b. Install balance weight in the position shown in the figure.
c. When installing balance weight to road wheels, set it into the grooved area on the inner wall of the road wheel as shown in the
figure so that the balance weight center is aligned with the tire
balance machine indication position (angle).
CAUTION:

Always use genuine NISSAN adhesion balance weights.

Balance weights are non-reusable; always replace with
new ones.

Do not install more than three sheets of balance weight.
SMA054D
SEIA0271E

WT-10
ROAD WHEEL TIRE ASSEMBLY
Revision: 2006 July 2007 FX35/FX45
d. If calculated balance weight value exceeds 50 g (1.76 oz), install
two balance weight sheets in line with each other as shown in
the figure.
CAUTION:
Do not install one balance weight sheet on top of another.
3. Start tire balance machine again.
4. Install drive-in balance weight on inner side of road wheel in the tire balance machine indication position (angle).
CAUTION:
Do not install more than two balance weights.
5. Start tire balance machine. Make sure that inner and outer resid- ual unbalance values are 5 g (0.2 oz) each or below.
6. If either residual unbalance value exceeds 5 g (0.2 oz), repeat installation procedures.
Tire RotationNES000KZ
1. Follow the maintenance schedule for tire rotation service intervals. Refer to MA-7, "Introduction of Peri-
odic Maintenance" .
2. Do not include the spare tire when rotating the tires.
3. When installing the wheel, tighten wheel nuts to the specified torque.
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 criteria for preventing strain of disc
rotor.
4. Perform the ID registration, after tire rotation. Refer to WT-20, "
ID Registration Procedure" .
Wheel balance Dynamic (At rim flange) Static (At rim flange)
Maximum allowable
unbalance 5 g (0.2 oz) (one side) 20 g (0.7 oz)
SMA056D
Wheel nuts : 108 N·m (11 kg-m, 80 ft-lb)

TIRE PRESSURE MONITORING SYSTEM WT-11
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Revision: 2006 July 2007 FX35/FX45
TIRE PRESSURE MONITORING SYSTEMPFP:40720
System ComponentsNES000GP
System DescriptionNES000GQ
TRANSMITTER
A sensor-transmitter integrated with a valve is installed on a wheel,
and transmits a detected air pressure signal in the form of a radio
wave.
REMOTE KEYLESS ENTRY RECEIVER
The remote keyless entry receiver receives the air pressure signal
transmitted by the transmitter in each wheel.
SEIA0599E
SEIA0521E
SEIA0431E

WT-12
TIRE PRESSURE MONITORING SYSTEM
Revision: 2006 July 2007 FX35/FX45
BCM (BODY CONTROL MODULE)
The BCM reads the air pressure signal received by the remote key-
less entry receiver, and controls the low tire pressure warning lamp
and the buzzer operations. It also has a judgment function to detect
a system malfunction.
LOW TIRE PRESSURE WARNING LAMP
The combination meter receives tire pressure status from the BCM
using CAN communication. When a low tire pressure condition is
sensed by the BCM, the combination meter low tire pressure warn-
ing lamp is activated.
Low Tire pressure Warning Lamp Indication
Note 1: Standard air pressure is for 220 kpa (2.2 kg/cm2 , 32 psi) vehicles.
RUN-FLAT TIRE WARNING LAMP
The combination meter receives tire pressure status from the BCM
using CAN communication. When a low tire pressure condition is
sensed by the BCM, the combination meter run-frat tire warning
lamp and buzzer are activated.
SEIA0591E
SEIA0434E
Condition Warning lamp
Less than 173 kPa (1.8 kg/cm
2 , 25 psi) [Note 1] ON
Low tire pressure warning system malfunction [Other diagnostic item] Warning lamp flashes 1 min, then turns ON
SEIA0792E

TIRE PRESSURE MONITORING SYSTEM WT-13
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Revision: 2006 July 2007 FX35/FX45
Run-Flat Tire Warning Lamp Indication
Note 1: Standard air pressure is for 220 kpa (2.2 kg/cm2 , 32 psi) vehicles.
DISPLAY UNIT
Displays the air pressure of each tire.

After the ignition switch is turned ON, the pressure values are
not displayed until the data of each wheel stabilizes.
Condition Warning lamp
Less than 86 kPa (0.88 kg/cm
2 , 12.5 psi) [Note 1] ON
SKIA5994E

WT-14
CAN COMMUNICATION
Revision: 2006 July 2007 FX35/FX45
CAN COMMUNICATIONPFP:23710
System DescriptionNES000GR
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-49, "
CAN System Specification Chart" .

TROUBLE DIAGNOSES WT-15
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Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSESPFP:00004
SchematicNES000GS
TEWM0162E

WT-16
TROUBLE DIAGNOSES
Revision: 2006 July 2007 FX35/FX45
Wiring Diagram — T/WARN —NES000GT
TEWM0149E