2004 INFINITI FX35 brake

REAR SUSPENSION MEMBER
RSU-17
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Revision: 2004 November 2004 FX35/FX45
REAR SUSPENSION MEMBERPFP:55501
Removal and InstallationAES000MU
REMOVAL
1. Remove tire with power tool.
2. Remove brake caliper with power tool. Hang it in a place where it will not interfere with work. Refer toBR-
25, "REAR DISC BRAKE" .
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
3. Remove wheel sensor from rear final drive, then remove wheel sensor harness from rear suspension
member. Refer to BRC-57, "
WHEEL SENSORS" .
4. Remove center muffler and main muffler. Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove stabilizer bar. Refer to RSU-16, "
Removal and Installation" .
6. Remove rear drive shaft. Refer to RAX-9, "
REAR DRIVE SHAFT" .
7. Remove rear final drive. Refer to RFD-11, "
REAR FINAL DRIVE ASSEMBLY" .
8. Separate attachments between parking brake cable and vehicle and rear suspension member. Refer to
PB-3, "
PARKING BRAKE CONTROL" .
9. Remove rear lower link and coil spring. Refer to RSU-15, "
Removal and Installation" .
10. Remove fixing bolt in lower side of shock absorber with power tool.
11. Set jack under rear suspension member.
12. Remove fixing bolts and nuts of tunnel stay and member stay with power tool, then remove those parts
from vehicle.
13. Remove fixing bolts and nuts of rear pin stay with power tool and then remove rear pin stay from vehicle.
14. Slowly lowering jack, then remove rear suspension member, suspension arm, radius rod, front lower link
and axle from vehicle as a unit.
15. Remove fixing bolts and nuts with power tool, then remove suspension arm, front lower link, and radius
rod from rear suspension member.
INSPECTION AFTER REMOVAL
Check rear suspension member for deformation, cracks, and other damage and replace if necessary.
INSTALLATION

Refer to RSU-7, "Components" , for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

Perform final tightening of installation position of links (rubber bushing) under unladen conditions with tires
on level ground. Check wheel alignment. Refer to RSU-5, "
Wheel Alignment Inspection" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjust-
ment of Steering Angle Sensor Neutral Position" .

SEAT BELTS
SB-9
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Revision: 2004 November 2004 FX35/FX45
SEAT BELT RETRACTOR ON-VEHICLE INSPECTION
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)
NOTE:
All seat belt retractors are of the Emergency Locking Retractors (ELR) type. In an emergency (sudden stop)
the retractor will lock and prevent the webbing from extending any further. All 3-point type seat belt retractors
except the driver's seat belt also have an Automatic Locking Retractors (ALR) mode. The ALR mode (also
called child restraint mode) is used when installing child seats. The ALR mode is activated when the seat belt
is fully extended. When the webbing is then retracted partially, the ALR mode automatically locks the seat belt
in a specific position so the webbing cannot be extended any further. To cancel the ALR mode, allow the seat
belt to fully wind back into the retractor.
Check the seat belt retractors using the following test(s) to determine if a retractor assembly is operating prop-
erly.
Stationary Inspection for ELR Function
Grasp the shoulder webbing and pull forward quickly. The retractor should lock and prevent the belt from
extending further.
Stationary Inspection for ALR Function
1. Pull out entire length of seat belt from retractor until a click is heard.
2. Retract the webbing partially. A clicking noise should be heard as the webbing retracts indicating that the
retractor is in the Automatic Locking Retractor (ALR) mode.
3. Grasp the seat belt and try to pull out the retractor. The webbing must lock and not extend any further. If
necessary replace the retractor assembly.
4. Allow the entire length of the webbing to retract to cancel the automatic locking mode.
Moving Inspection for ELR Function
WARNING:
Perform the following test in a safe, open area clear of other vehicles and obstructions (for example, a
large, empty parking lot). Road surface must be paved and dry. DO NOT perform the following test on
wet or gravel roads or on public streets and highways. This could result in an accident and serious
personal injury. The driver and passenger must be prepared to brace themselves in the event the
retractor does not lock.
1. Fasten driver's seat belt. Buckle a passenger into the seat for the belt that is to be tested.
2. Proceed to the designated safe area.
3. Drive the vehicle at approximately 16 km/h (10 MPH). Notify any passengers of a pending sudden stop.
The driver and passenger must be prepared to brace themselves in the event the retractor does not lock.
Apply brakes firmly and make a very hard stop.
During stop, seat belts should lock and not be extended. If the seat belt retractor assembly does not lock, per-
form the retractor off-vehicle inspection.

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.

TF-20
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
*: The values are changed by throttle opening and engine speed.RR RH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR LH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
BATTERY VOLT [V]Power supply voltage for
AWD control unitIgnition switch: ON Battery voltage
THRTL POS SEN [%] Throttle opening conditionWhen depressing accelerator pedal
(Value rises gradually in response to
throttle position.)0 - 100%
ETS SOLENOID [A]Monitored value of current at
AWD solenoidEngine running

At idle speedApprox. 0.000A
Engine running

When depressing accelerator
pedalApprox. 0.000 - 2.400A*
STOP LAMP SW [ON/OFF]Condition of brake pedal
operationBrake pedal: Depressed ON
Brake pedal: Released OFF
ENG SPEED SIG [RUN/STOP] Condition of engine runningEngine stopped
(Engine speed: Less than 400 rpm)STOP
Engine running
(Engine speed: 400 rpm or more)RUN
ETS ACTUATOR [ON/OFF]Operating condition of AWD
actuator relay (integrated in
AWD control unit)Engine stopped (Ignition
switch: ON)OFF
Engine running ON
4WD WARN LAMP [ON/OFF] AWD warning lamp conditionAWD warning lamp: ON ON
AWD warning lamp: OFF OFF
4WD MODE MON [AUTO] Control status of AWD Engine running AUTO
DIS-TIRE MONI [mm]Improper size tire installed
conditionVehicle running with normal size tire
installed0-4 mm
Vehicle running with improper size
tire installed (Front/rear tire size dif-
ference, wear condition)4-8 mm, 8- mm
P BRAKE SW [ON/OFF] Condition of parking brakeParking brake operated ON
Parking brake not operated OFF Monitored item [Unit] Content Condition Display value

TROUBLE DIAGNOSIS
TF-23
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Revision: 2004 November 2004 FX35/FX45
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to TF-21, "CONSULT-II SETTING PROCEDURE"
.
2. Touch “DATA MONITOR”.
3. Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.
Display Item List
×: Standard –: Not applicable
Monitored item (Unit)Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
FR RH SENSOR [km/h] or [mph]×××Wheel speed calculated by front wheel
sensor RH signal is displayed.
FR LH SENSOR [km/h] or [mph]×××Wheel speed calculated by front wheel
sensor LH signal is displayed.
RR RH SENSOR [km/h] or [mph]×××Wheel speed calculated by rear wheel
sensor RH signal is displayed.
RR LH SENSOR [km/h] or [mph]×××Wheel speed calculated by rear wheel
sensor LH signal is displayed.
BATTERY VOLT [V] – –×Power supply voltage for AWD control unit
THRTL POS SEN [%] – –×Throttle opening status is displayed.
ETS SOLENOID [A] – –×Monitored value of current at AWD sole-
noid
STOP LAMP SW [ON/OFF] – –×Stop lamp switch signal status via CAN
communication line is displayed.
ENG SPEED SIG [RUN/STOP] – –×Engine status is displayed.
ETS ACTUATOR [ON/OFF] – –×Operating condition of AWD actuator relay
(integrated in AWD control unit) is dis-
played.
4WD WARN LAMP [ON/OFF] – –×Control status of AWD warning lamp is dis-
played.
4WD MODE SW [AUTO] – –×AWD lock switch is not equipped, but dis-
played.
4WD MODE MON [AUTO] – –×Control status of AWD is displayed.
DIS-TIRE MONI [mm] – –×Improper size tire installed condition is dis-
played.
P BRAKE SW [ON/OFF] – –×Parking switch signal status via CAN com-
munication line is displayed.
Voltage [V] – –×The value measured by the voltage probe
is displayed.
Frequency [Hz] – –×
The value measured by the pulse probe is
displayed. DUTY-HI (high) [%] – –×
DUTY-LOW (low) [%] – –×
PLS WIDTH-HI [msec] – –×
PLS WIDTH-LOW [msec] – –×

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-35
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Revision: 2004 November 2004 FX35/FX45
3. CHECK SYSTEM FOR AWD SOLENOID
Perform trouble diagnoses for AWD solenoid system. Refer to TF-27, "
AWD Solenoid" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK ELECTRIC CONTROLLED COUPLING
1. Turn ignition switch “OFF”.
2. Set the selector lever to “N” (neutral) position and disengage the parking brake.
3. Lift up the vehicle.
4. Rotate the rear propeller shaft by hand.
5. Hold front propeller shaft lightly.
Does front propeller shaft rotate?
YES >> Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.). Refer to TF-
45, "Disassembly and Assembly" .
NO >> GO TO 5.
5. CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-19, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >>INSPECTION END
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
Vehicle Does Not Enter AWD Mode Even Though AWD Warning Lamp Turned To
OFF
ADS000U0
DIAGNOSTIC PROCEDURE
1. CHECK AWD SOLENOID
Check AWD solenoid. Refer to TF-29, "
COMPONENT INSPECTION" .
OK or NG
OK >> GO TO 2.
NG >> Replace electric controlled coupling for malfunction of AWD solenoid. Refer to TF-45, "
Disassem-
bly and Assembly" .
2. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-19, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 3.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
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Revision: 2004 November 2004 FX35/FX45
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
SymptomTIRESNoise× ×××××× ×××× ××××
Shake× ××××× ×× ×× ××××
Vibration×××××××
Shimmy× ××××××× ×× × ××
Judder× ××××× × ×× × ××
Poor quality ride
or handling× ××××× × ×× ×
ROAD WHEELNoise× ×× × ××××× ×××
Shake× ×× × × ××× ×××
Shimmy, Judder× ×× × ××× ××
Poor quality ride
or handling× ×× × ×××