tire pressure INFINITI FX35 2005 Workshop Manual

TROUBLE DIAGNOSIS FOR SYMPTOMS TF-37
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Revision: 2005 July 2005 FX
3. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> Replace electric controlled coupling for mechanical malfunction (mechanical engagement of
clutch is not possible.). Refer to TF-45, "
Disassembly and Assembly" .
While Driving, AWD Warning Lamp Flashes Rapidly (When Flashing in Approx.
1 Minute and Then Turning OFF)
ADS000U1
NOTE:
Rapid flashing: 2 times/second
This symptom protects drivetrain parts when a heavy load is applied to the electric controlled coupling and
multiple disc clutch temperature increases. Also, optional distribution of torque sometimes becomes rigid
before lamp flashes rapidly. Both cases are not malfunction.
When this symptom occurs, stop vehicle and allow it to idle for some times. Flashing will stop and system will
be restored.
While Driving, AWD Warning Lamp Flashes Slowly (When Continuing to Flash
until Turning Ignition Switch OFF)
ADS000U2
NOTE:
Slow flashing: 1 time/2 seconds
DIAGNOSTIC PROCEDURE
1. CHECK TIRE
Check the following.

Tire pressure

Wear condition

Longitudinal tire size (There is no difference between longitudinal tires.)
OK or NG
OK >> GO TO 2.
NG >> Drive at vehicle speed of 20 km/h (12 MPH) or more for 5 seconds or more after repairing or
replacing damaged parts. (Initialize improper size tire information.)
2. CHECK INPUT SIGNAL OF TIRE DIAMETER
With CONSULT-II
1. Start engine.
2. Drive at 20 km/h (12 MPH) or more for approx. 200 seconds.
3. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
4. Check monitor “DIS-TIRE MONI”.
Display of
“DIS-TIRE MONI”
“0-4mm”>> INSPECTION END
Except for “0-4mm”>>GO TO 3.
SDIA1900E

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
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SECTION WT
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WT
Revision: 2005 July 2005 FX
ROAD WHEELS & TIRES
PREPARATION ........................................................... 2
Special Service Tools .......................................... ..... 2
Commercial Service Tools ................................... ..... 2
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 3
NVH Troubleshooting Chart ................................ ..... 3
ROAD WHEEL ....................................................... ..... 4
Inspection ............................................................ ..... 4
ALUMINUM WHEEL ........................................ ..... 4
STEEL WHEEL ................................................ ..... 4
ROAD WHEEL TIRE ASSEMBLY ......................... ..... 5
Balancing Wheels (Bonding Weight Type) .......... ..... 5
REMOVAL ........................................................ ..... 5
WHEEL BALANCE ADJUSTMENT ................. ..... 5
Tire Rotation ........................................................ ..... 6
LOW TIRE PRESSURE WARNING SYSTEM ....... ..... 7
System Components ........................................... ..... 7
System Description ............................................. ..... 7
TRANSMITTER ................................................ ..... 7
REMOTE KEYLESS ENTRY RECEIVER ........ ..... 7
BCM (BODY CONTROL MODULE) ................. ..... 8
LOW TIRE PRESSURE WARNING LAMP ...... ..... 8
DISPLAY UNIT ................................................. ..... 8
CAN COMMUNICATION ....................................... ..... 9
System Description ............................................. ..... 9
TROUBLE DIAGNOSES ....................................... ... 10
Schematic ........................................................... ... 10
Wiring Diagram ................................................... .... 11
Control Unit Input/Output Signal Standard .......... ... 14
ID Registration Procedure ................................... ... 16
ID REGISTRATION WITH ACTIVATION TOOL ... 16
ID REGISTRATION WITHOUT ACTIVATION
TOOL ............................................................... ... 17
Transmitter Wake Up Operation .......................... ... 18
WITH ACTIVATION TOOL ............................... ... 18
Self-Diagnosis ..................................................... ... 19
DESCRIPTION ................................................. ... 19
FUNCTION ....................................................... ... 19
LOW TIRE PRESSURE WARNING LAMP DIAG-
NOSTIC CHART .............................................. ... 19 CONSULT-II ......................................................
... 20
WORK SUPPORT MODE ................................ ... 21
SELF-DIAGNOSTIC RESULTS MODE ............ ... 21
DATA MONITOR MODE ................................... ... 22
ACTIVE TEST MODE ...................................... ... 22
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ................................................... ... 25
INTRODUCTION .............................................. ... 25
WORK FLOW ................................................... ... 25
Preliminary Check ............................................... ... 26
Malfunction Code/Symptom Chart ....................... ... 27
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 28
Inspection 1: Transmitter or Control Unit (BCM) .. ... 28
MALFUNCTION CODE NO. 21, 22, 23 OR 24 ... 28
Inspection 2: Transmitter - 1 ................................ ... 28
MALFUNCTION CODE NO. 31, 32, 33, 34, 41,
42, 43, 44, 45, 46, 47 OR 48 ............................ ... 28
Inspection 3: Transmitter - 2 ................................ ... 29
MALFUNCTION CODE NO. 35, 36, 37 OR 38 ... 29
Inspection 4: Vehicle Speed Signal ..................... ... 30
MALFUNCTION CODE NO. 52 ........................ ... 30
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 31
Inspection 1: Warning Lamp Does Not Come On
When Ignition Switch Is Turned On ..................... ... 31
Inspection 2: Warning Lamp Stays On When Ignition
Switch Is Turned On ............................................ ... 31
Inspection 3: Warning Lamp Blinks When Ignition
Switch Is Turned On ............................................ ... 33
Inspection 4: Turn Signal Lamp Blinks When Ignition
Switch Is Turned On ............................................ ... 34
Inspection 5: ID Registration Can Not Be Completed ... 34
REMOVAL AND INSTALLATION .......................... ... 35
Transmitter .......................................................... ... 35
REMOVAL ........................................................ ... 35
INSTALLATION ................................................ ... 35
SERVICE DATA ..................................................... ... 37
Road Wheel ......................................................... ... 37
Tire ...................................................................... ... 37
Tightening Torque ................................................ ... 37

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING WT-3
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Revision: 2005 July 2005 FX
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartAES000JK
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
,
FSU-6 WT-4—
—
—
—
—
—
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 section
NVH in BR section
NVH in PS section
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
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEEL
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-6
ROAD WHEEL TIRE ASSEMBLY
Revision: 2005 July 2005 FX
c. 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 wheel balancer again.
4. Install drive-in balance weight on inner side of road wheel in the wheel balancer indication position (angle).
CAUTION:
Do not install more than two balance weights.
5. Start wheel balancer. Make sure that inner and outer residual unbalance values are 5.0 g (0.2 oz) each or below.

If either residual unbalance value exceeds 5.0 g (0.2 oz), repeat installation procedures.
Wheel balance (Maximum allowable unbalance):
Tire RotationAES000ON

After rotating the tires, adjust the tire pressure.

Retighten the wheel nuts when the vehicle has been driven for
1,000 km (600 miles) (also in cases of a flat tire, etc.).
CAUTION:

Do not include the T-type spare tire when rotating the tires.

When installing wheels, tighten them diagonally by dividing
the work two to three times in order to prevent the wheels
from developing any distortion.
Maximum allowable
unbalance Dynamic (At rim flange) 5.0 g (0.2 oz) (one side)
Static (At rim flange) 20 g (0.7 oz)
SMA056D
Tightening torque of wheel nut : 112.5 N·m (11 kg, 83 ft-lb)
SMA829C

LOW TIRE PRESSURE WARNING SYSTEM WT-7
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Revision: 2005 July 2005 FX
LOW TIRE PRESSURE WARNING SYSTEMPFP:40300
System ComponentsAES000YZ
System DescriptionAES000Z0
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
SEIA0203E
SEIA0431E

WT-8
LOW TIRE PRESSURE WARNING SYSTEM
Revision: 2005 July 2005 FX
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 as shown below. It also has a judgement
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 and buzzer are activated.
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 Buzzer
Less than 178 kPa (1.78 kg/cm
2 , 26 psi)
[Flat tire] ON Sounds for 10 sec.
System malfunction ON OFF
SEIA0591E
SEIA0434E
SKIA5994E

WT-14
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
Control Unit Input/Output Signal StandardAES000Z4
Standards using a circuit tester and oscilloscope
Terminal
Item Condition Voltage (V)
Approx. value
+–
15 (G)
Ground Tire pressure warning check
connector Always 5V
18 (B) Remote keyless entry receiver
(Ground) —0V
19 (R) Remote keyless entry receiver
(Power supply) Stand-by
Press any of the keyfob
switches
20 (Y) Remote keyless entry receiver
(Signal) Stand-by
Press any of the keyfob
switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage (12V)
39 (L) Data line (CAN H) — —
40 (R) Data line (CAN L) — —
42 (L/R) Battery power supply (Fuse) Always Battery voltage (12V)
45 (G/W) Turn signal (left)

Ignition switch ON

Combination switch is turn
signal (left)
OCC3879D
OCC3882D
OCC3881D
OCC3880D
SKIA3009J

WT-16
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
ID Registration ProcedureAES000Z5
ID REGISTRATION WITH ACTIVATION TOOL
This procedure must be done after replacement of a transmitter or BCM.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
during self-diagnosis depending on control unit which performs CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con- nector, then turn the ignition switch ON.
2. Select “START (NISSAN BASED VHCL)”.
3. Select “BCM” on “SELECT SYSTEM” screen. NOTE:
If “BCM” is not indicated, go to GI-39, "
CONSULT-II Data Link Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR” on “SELECT WORK ITEM” screen.
5. Select “WORK SUPPORT” on “SELECT DIAG MODE” screen, and select “ID REGIST”.
6. With the activation tool (J-45295) pushed against the front-left transmitter position of the tire air valve, press and hold the but-
ton 5 seconds.
7. Register the IDs in order from FR LH, FR RH, RR RH or RR LH. When ID registration of each wheel has been completed, a buzzer sounds and turn signal lamp (LH/ RH) blinks.
8. After completing all ID registrations, press “END” to complete the procedure.
NOTE:
Be sure to register the IDs in order from FR LH, FR RH, RR RH, to RR LH, or the self-diagnostic results dis-
play will not function properly.
SEIA0460E
Activation tire position Buzzer Turn signal lamp CONSULT-II
1Front LH Once
2 times flashing “YET”
↓
“DONE”
2 Front RH 2 times
3 Rear RH 3 times
4 Rear LH 4 times

TROUBLE DIAGNOSES WT-17
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WT
Revision: 2005 July 2005 FX
ID REGISTRATION WITHOUT ACTIVATION TOOL
This procedure must be done after replacement of a transmitter or BCM.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
during self-diagnosis depending on control unit which performs CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to the data link con- nector, then turn the ignition switch ON.
2. Select “START (NISSAN BASED VHCL)”.
3. Select “BCM” on “SELECT SYSTEM” screen. NOTE:
If “BCM” is not indicated, go to GI-39, "
CONSULT-II Data Link Connector (DLC) Circuit" .
4. Select “AIR PRESSURE MONITOR” on “SELECT WORK ITEM” screen.
5. Select “WORK SUPPORT” on “SELECT DIAG MODE” screen, and select “ID REGIST”.
6. Adjust the tire pressure to the values shown in the table below for ID registration, and drive the vehicle at 40 km/h (25 MPH) or more for a few minutes.
7. After completing all ID registrations, press “END” to complete the procedure.
8. Inflate all tires to proper pressure. Refer to WT-37, "
Tire" .
Tire position
Tire pressure kPa (kg/cm2 , psi)
Front − Left 240 (2.4, 34)
Front − Right 220 (2.2, 31)
Rear − Right 200 (2.0, 29)
Rear − Left 180 (1.8, 26)
Activation tire position CONSULT-II Front LH “YET” ↓
“DONE”
Front RH
Rear RHRear LH

WT-18
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
Transmitter Wake Up OperationAES000Z6
WITH ACTIVATION TOOL
1. With the activation tool (J-45295) pushed against the front-left
transmitter, press the button for 5 seconds.

When ignition switch ON, as the low tire pressure warning
lamp blinks per the following diagram, the respective transmit-
ter then must be woken up.
2. Register the ID of wheel that warning lamp flashes. When wake up of registered wheel has been com- pleted, turn signal lamp flashes two times.
3. After completing wake up all transmitters, make sure low tire pressure warning lamp goes out.
SEIA0460E
SEIA0378E