wheel INFINITI FX35 2004 Service Manual

DISPOSAL OF AIR BAG MODULE AND SEAT BELT PRE-TENSIONER
SRS-53
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SRS
Revision: 2004 November 2004 FX35/FX45
5. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
6. The lamp on the right side of the tool, marked “deployment tool
power”, should glow green, not red.
7. Press the button on the deployment tool. The left side lamp on
the tool, marked “air bag connector voltage”, will illuminate and
the air bag module will deploy.
CAUTION:
When deploying the front side air bag module, stand at
least 5 m (16 ft) away from the air bag module.
Deployment of Side Curtain Air Bag Module (Outside of Vehicle)
1. Cut the inflator from side curtain air bag module.
2. Connect deployment tool [SST: KV99106400 (J38381)] and
deployment tool adapter yellow connector (SST: J38381-80) to
the inflator.
3. Put the inflator connected with the deployment tool [SST:
KV99106400 (J38381)] into a tire without a wheel.
PHIA0697E
PHIA0311E
PHIA0310E
SHIA0201E

SRS-54
DISPOSAL OF AIR BAG MODULE AND SEAT BELT PRE-TENSIONER
Revision: 2004 November 2004 FX35/FX45
4. Put the tire with the inflator onto another tire without wheel. Add
an additional tire without a wheel and then a tire mounted on a
wheel on top.
CAUTION:
Tie all tires together with a strap in order keep them stand-
ing.
5. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
6. The lamp on the right side of the tool, marked “deployment tool
power”, should glow green, not red.
7. Press the button on the deployment tool. The left side lamp on
the tool, marked “air bag connector voltage”, will illuminate and the air bag module will deploy.
CAUTION:
When deploying the side curtain air bag module, stand at least 5 m (16 ft) away from the side cur-
tain air bag module.
DEPLOYMENT PROCEDURES FOR SEAT BELT PRE-TENSIONER (OUTSIDE OF VEHICLE)
1. Firmly grip pre-tensioner in a vise and cut off the webbing.
2. Connect deployment tool [SST: KV99106400 (J38381)] and
deployment tool adapter (SST: J38381-80) yellow connector to
front seat belt pre-tensioner.
3. Connect red clip of deployment tool to battery positive terminal
and black clip to negative terminal.
4. The lamp on the right side of the tool, marked “deployment tool
power”, should glow green, not red.
5. Press the button on the deployment tool. The left side lamp on
the tool, marked “seat belt pre-tensioner connector voltage”, will
illuminate and the seat belt pre-tensioner will deploy.
CAUTION:
When deploying the front seat belt pre-tensioner, stand at
least 5 m (16 ft) away from the seat belt pre-tensioner.
WHIA0048E
WHIA0034E
PHIA0221E
SRS242

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COLLISION DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
COLLISION DIAGNOSISPFP:00015
For Frontal CollisionAHS000I6
To repair the SRS, perform the following steps.
When SRS (except the front side air bag and side curtain air bag modules) is activated in a collision:
1. Replace the diagnosis sensor unit.
2. Remove the air bag modules (except the front side air bag modules and side curtain air bag modules),
crash zone sensor assembly, bracket and seat belt pre-tensioner assemblies.
3. Check the SRS components using the table below:
–Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
4. Install new air bag modules (except the front side air bag modules and side curtain air bag modules) crash
zone sensor assembly, bracket and seat belt pre-tensioner assemblies.
5. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-17, "
SRS Operation
Check" for details. Ensure entire SRS operates properly.
When SRS is not activated in a collision:
1. Check the SRS components using the table below:
–Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
2. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-17, "
SRS Operation
Check" for details. Ensure entire SRS operates properly.
When only one front air bag module is activated in a collision:
1. Replace the following components:
–Diagnosis sensor unit
–Crash zone sensor
–Activated front air bag and seat belt pre-tensioner.
2. Check the other SRS components using the table below. (Refer to “SRS is NOT activated”.)
–Replace any SRS components showing visible signs of damage (dents, cracks and deformation).
3. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-17, "
SRS Operation
Check" for details. Ensure entire SRS operates properly.
Only one front air bag may inflate a crash, depending on the crash severity and whether the front occupants
are belted or unbelted. This does not indicate improper performance of the system. Perform self-diagnosis to
make sure the entire SRS operates properly.
SRS INSPECTION (FOR FRONTAL COLLISION)
Part SRS is activated SRS is NOT activated
Air bag module
(driver or front pas-
senger air bag mod-
ule)REPLACE
Install with new bolts.1. Remove air bag module. Check harness cover and connectors for damage, termi-
nals for deformities, and harness for binding.
2.
–Install driver air bag module into the steering wheel to check fit and alignment with
the wheel.
–Install passenger air bag module into the instrument panel to check fit with the
instrument panel.
3. No damage found, reinstall with new bolts.
4. If damaged—REPLACE air bag modules with new special bolts.
Air bag must be deployed before disposal.
Crash zone sensor REPLACE the crash
zone sensor and
bracket with new
nuts.1. Remove the crash zone sensor. Check harness connectors for damage, terminals
for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the crash zone
sensor and bracket.
3. Install the crash zone sensor to check fit.
4. No damage found, reinstall with new bolts.
5. If damaged—REPLACE the crash zone sensor and bracket with new nuts.

COLLISION DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
For Side CollisionAHS000I7
WHEN THE SIDE AIR BAG IS ACTIVATED IN THE SIDE COLLISION:
1. Replace the following components:
–All parts of front seatback (including front seatback frame) with front side air bag module (on the side on
which front side air bag is activated)
–Curtain air bag module (on the side on which side curtain air bag is activated)
–Diagnosis sensor unit
–Satellite sensor (on the side on which side air bag and side curtain air bag are activated)
2. Check the SRS components and the related parts using the following table.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
3. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-17, "
SRS Operation
Check" . Ensure entire SRS operates properly.
Seat belt pre-ten-
sioner assembliesREPLACE
Install seat belt pre-
tensioner with new
bolts.1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and
harness for binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. Check seat belt adjuster for damage.
5. If no damage is found, reinstall seat belt pre-tensioner assembly with new bolts.
6. If damaged—REPLACE seat belt pre-tensioners with new bolts.
Seat belt pre-tensioners must be deployed before disposal.
Diagnosis sensor unit REPLACE
Install with new bolts.1. Check case for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new bolts and ground bolt.
4. If damaged—REPLACE diagnosis sensor unit with new bolts and ground bolt.
Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
3. Install air bag module to check fit or alignment with steering wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall with nut.
6. If damaged—REPLACE.
Spiral cable 1. Visually check spiral cable and combination switch for damage.
2. Check connectors and protective tape for damage.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall with screws.
5. If damaged—REPLACE.
Harness and connec-
tors1. Check connectors for poor connection, damage, and terminals for deformities.
2. Check harness for binding, chafing, cuts, or deformities.
3. If no damage is found, reinstall the harness and connectors.
4. If damaged—REPLACE damaged section of harness. Do not repair, splice or modify any SRS harness.
Instrument panel 1. Visually check instrument panel for damage.
2. If no damage is found, reinstall the instrument panel.
3. If damaged—REPLACE the instrument panel with bolts. Part SRS is activated SRS is NOT activated

TF-1
TRANSFER
D DRIVELINE/AXLE
CONTENTS
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Revision: 2004 November 2004 FX35/FX45
TRANSFER
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions .............................................................. 3
Service Notice .......................................................... 4
Wiring Diagrams and Trouble Diagnosis .................. 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 6
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 7
NVH Troubleshooting Chart ..................................... 7
TRANSFER FLUID ..................................................... 8
Replacement ............................................................ 8
DRAINING ............................................................. 8
FILLING ................................................................. 8
Inspection ................................................................. 8
FLUID LEAKAGE AND FLUID LEVEL .................. 8
AWD SYSTEM ............................................................ 9
Power Transfer Diagram .......................................... 9
System Description .................................................. 9
DESCRIPTION ...................................................... 9
ELECTRIC CONTROLLED COUPLING ............. 10
AWD CONTROL UNIT ........................................ 10
AWD WARNING LAMP ........................................ 11
System Diagram ...................................................... 11
COMPONENTS FUNCTION DESCRIPTION ..... 12
CAN Communication .............................................. 12
SYSTEM DESCRIPTION .................................... 12
TROUBLE DIAGNOSIS ............................................ 13
Fail-Safe Function .................................................. 13
How to Perform Trouble Diagnosis ........................ 13
BASIC CONCEPT ............................................... 13
Location of Electrical Parts ..................................... 14
Circuit Diagram ...................................................... 15
Wiring Diagram — AWD — .................................... 16
Trouble Diagnosis Chart for Symptoms ................. 19
AWD Control Unit Input/Output Signal Reference
Values .................................................................... 19AWD CONTROL UNIT INSPECTION TABLE ..... 19
CONSULT-II Function (ALL MODE AWD/4WD) ..... 21
FUNCTION .......................................................... 21
CONSULT-II SETTING PROCEDURE ................ 21
SELF-DIAG RESULT MODE ............................... 21
DATA MONITOR MODE ...................................... 23
ACTIVE TEST MODE ......................................... 24
AWD CONTROL UNIT PART NUMBER ............. 24
TROUBLE DIAGNOSIS FOR SYSTEM .................... 25
Power Supply Circuit For AWD Control Unit ........... 25
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 25
DIAGNOSTIC PROCEDURE .............................. 25
AWD Control Unit ................................................... 26
DIAGNOSTIC PROCEDURE .............................. 26
ABS System ........................................................... 26
DIAGNOSTIC PROCEDURE .............................. 26
AWD Solenoid ........................................................ 27
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 27
DIAGNOSTIC PROCEDURE .............................. 27
COMPONENT INSPECTION .............................. 29
AWD Actuator Relay ............................................... 30
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 30
DIAGNOSTIC PROCEDURE .............................. 30
Engine Control Signal ............................................. 31
DIAGNOSTIC PROCEDURE .............................. 31
CAN Communication Line ...................................... 31
DIAGNOSTIC PROCEDURE .............................. 31
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 32
AWD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned To ON ............................. 32
DIAGNOSTIC PROCEDURE .............................. 32
AWD Warning Lamp Does Not Turn OFF Several
Seconds After Engine Started ................................ 32
DIAGNOSTIC PROCEDURE .............................. 32
Heavy Tight-corner Braking Symptom Occurs
When The Vehicle Is Driven And The Steering
Wheel Is Turned Fully To Either Side After The

AWD SYSTEM
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Revision: 2004 November 2004 FX35/FX45
AWD SYSTEMPFP:41650
Power Transfer DiagramADS000RV
System DescriptionADS000RW
DESCRIPTION

Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.

Makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.

On roads which do not require AWD, it contributes to improved fuel economy by driving in conditions close
to rear-wheel drive.

Sensor inputs determine the vehicle's turning condition, and in response tight cornering/braking are con-
trolled by distributing optimum torque to front wheels.
NOTE:

When driving, if there is a large difference between front and rear wheel speed which continues for a long
time, fluid temperature of drive system parts becomes too high and AWD warning lamp flashes rapidly.
(When AWD warning lamp flashes, vehicle changes to rear-wheel drive conditions.) Also, optional distri-
bution of torque sometimes becomes rigid before lamp flashes rapidly, but it is not malfunction.

If AWD warning lamp is flashing rapidly, stop vehicle and allow it to idle for some time. Flashing will stop
and AWD system will be restored.

When driving, AWD warning lamp may flash slowly if there is a significant difference in diameter of the
tires. At this time, vehicle performance is not fully available and cautious driving is required. (Continues
until engine is turned OFF.)

If the warning lamp flashes slowly during driving but remains OFF after engine is restarted, the system is
normal. If it again flashes slowly after driving for some time, vehicle must be inspected.

When the difference of revolution speed between the front and rear wheel with AUTO mode the shift occa-
sionally changes to direct 4-wheel driving conditions automatically. This is not malfunction.
SDIA1611E

TF-10
AWD SYSTEM
Revision: 2004 November 2004 FX35/FX45
ELECTRIC CONTROLLED COUPLING
Operation principle
1. AWD control unit supplies command current to electric controlled coupling (AWD solenoid).
2. Control clutch is engaged by electromagnet and torque is detected in control clutch.
3. The cam operates in response to control clutch torque and applies pressure to main clutch.
4. Main clutch transmits torque to front wheels according to pressing power.

Transmission torque to front wheels is determined according
to command current.
AWD CONTROL UNIT

Controls distribution of drive power between rear-wheel drive
(0:100) and AWD (50:50) conditions according to signals from
sensors.

Self-diagnosis can be done with CONSULT-II.
SDIA2270E
SDIA1844E
SDIA2273E

AWD SYSTEM
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Revision: 2004 November 2004 FX35/FX45
AWD WARNING LAMP
Turns ON when there is a malfunction in AWD system. It indicates that fail-safe mode is engaged and vehicle
change to rear-wheel drive or shifting driving force-AWD (Front-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.
AWD Warning Lamp Indication
System DiagramADS000RX
Condition AWD warning lamp
Lamp checkTurns ON when ignition switch is turned ON. Turns OFF
approx. 1 second after engine start.
AWD system malfunctionON
Protection function is activated due to heavy load to electric con-
trolled coupling. (AWD system is not malfunctioning and AWD system
changes to 2WD mode.)Rapid flashing: 2 times/second
(Flashing in approx. 1 minute and then turning OFF.)
Large difference in diameter of front/rear tiresSlow flashing: 1 time/2 seconds
(Continuing to flash until turning ignition switch OFF)
Other than above (system normal) OFF
SDIA2160E

TF-12
AWD SYSTEM
Revision: 2004 November 2004 FX35/FX45
COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationADS000RY
SYSTEM DESCRIPTION
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.
For details, refer to LAN-6, "
CAN Communication Unit" .
Component parts Function
AWD control unit

Controls driving force distribution by signals from each sensor and switch from rear wheel driving
mode (0:100) to AWD mode (50:50).

2WD mode is available by fail-safe function if malfunction is detected in AWD system.
Wheel sensors Detects wheel speed.
AWD solenoid Controls electric controlled coupling by command current from AWD control unit.
Electric controlled coupling Transmits driving force to front final drive.
AWD warning lamp

Illuminates if malfunction is detected in electrical system of AWD system.

There is 1 blink in 2 seconds if rotation difference of front wheels and rear wheels is large.

There are 2 blinks in 1 second if load is still applied to driving parts.
ABS actuator and electric unit
(control unit)Transmits the following signals via CAN communication to AWD control unit.

Vehicle speed signal

Stop lamp switch signal (brake signal)
ECMTransmits the following signals via CAN communication to AWD control unit.

Accelerator pedal position signal

Engine speed signal
Unified meter and A/C amp. Transmits conditions of parking brake switch via CAN communication to AWD control unit.

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
Fail-Safe FunctionADS000S1

If any malfunction occurs in AWD electrical system, and control unit detects the malfunction, AWD warn-
ing lamp on combination meter turns ON to indicate system malfunction.

When AWD warning lamp is ON, vehicle changes to rear-wheel drive or shifting driving force-AWD (Front-
wheels still have some driving torque).
How to Perform Trouble DiagnosisADS000S2
BASIC CONCEPT

To perform trouble diagnosis, it is the most important to have understanding about vehicle systems (con-
trol and mechanism) thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptoms, and understand them fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptoms by driving vehicle with
customer.
CAUTION:
Customers are not professional. It is dangerous to make an
easy guess like "maybe the customer means that...," or
"maybe the customer mentions this symptom".

It is essential to check symptoms right from the beginning in
order to repair malfunctions completely.
For intermittent malfunctions, reproduce symptoms based on
interview with customer and past examples. Do not perform
inspection on ad hoc basis. Most intermittent malfunctions are
caused by poor contacts. In this case, it will be effective to shake
suspected harness or connector by hand. When repairing with-
out any symptom diagnosis, you cannot judge if malfunctions
have actually been eliminated.

After completing diagnosis, always erase diagnostic memory.
Refer to TF-22, "
How to Erase Self-diagnostic Results" .

For intermittent malfunctions, move harness or harness connec-
tor by hand. Then check for poor contact or reproduced open circuit.
SEF233G
SEF234G