sensor INFINITI FX35 2007 Service Manual

TROUBLE DIAGNOSIS FOR SYMPTOMS BRC-53
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyNFS000NY
1. CHECK FRONT AND REAR AXLE
Make sure there is no excessive looseness in the front and rear axles.
OK or NG
OK >> GO TO 2.
NG >> Check front or rear axle system.
2. CHECK WHEEL SENSOR
Perform following inspection for wheel sensor:

Sensor mount and damage inspection

Sensor rotor mount and damage inspection

Sensor connector connection inspection

Sensor harness inspection
OK or NG
OK >> GO TO 3.
NG >> Replace sensor or sensor rotor.
3. CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-25, "
Self-Diagnosis" .
Unexpected Pedal ReactionNFS000NZ
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
Is the stroke too long?
YES >>
Bleed air from brake piping.

Check brake pedal, brake booster, and master cylinder mount for play, looseness, and brake
system for fluid leaks, etc. If any malfunctions are found, make repair.
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector E56 and make sure that braking force is suf-
ficient when ABS in not operating. After the inspection, reconnect connector.
OK or NG
OK >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "Excessive ABS Function Operation Fre-
quency" .
NG >> Check brake system.

BRC-54
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 July 2007 FX35/FX45
The Braking Distance is LongNFS000O0
CAUTION:
On slippery road surfaces, the stopping distance might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector E56 to deactivate ABS. In this condition,
check stopping distance. After inspection, connect connector.
OK or NG
OK >>
Bleed air from brake piping.

Check brake system.
NG >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "
Excessive ABS Function Operation Fre-
quency" .
The ABS Function Does Not OperateNFS000O1
CAUTION:
The ABS does not operate when the speed is 10 km/h (6 MPH) or less.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "Excessive ABS Function Operation Fre-
quency" .
NG >> Perform self-diagnosis. Refer to BRC-25, "
Self-Diagnosis" .
Pedal Vibration or ABS Operation Sound OccursNFS000O2
CAUTION:
Under the following conditions, when brake pedal is lightly depressed (just place a foot on it), ABS is
activated and vibration is felt. However, this is normal.

When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves

When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1. SYMPTOM CHECK 1
Check if pedal vibration or operation sound occurs when engine is started.
OK or NG
OK >> Perform self-diagnosis. Refer to BRC-25, "Self-Diagnosis" .
NG >> GO TO 2.
2. SYMPTOM CHECK 2
Check symptom when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur when the electrical component (head lamp, etc.) switches are operated?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to ABS actuator and electric unit (control unit) (or its wiring), and if there is, move it farther away.
NO >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "
Excessive ABS Function Operation Fre-
quency" .

WHEEL SENSORS BRC-57
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
WHEEL SENSORSPFP:47910
Removal and InstallationNFS000O4
REMOVAL
1. Disconnect wheel sensor connector.
2. Remove wheel sensor mounting bolts, grommets (front sensor) and clip.
3. Remove wheel sensor.
CAUTION:
Be careful of the following when installing sensor.

As much as possible, avoid rotating sensor when removing it. Pull sensors out without pulling on
sensor harness.

Take care to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before
removing front wheel hub and bearing assembly and rear final drive. This is to avoid damage to
sensor wiring and loss of sensor function.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful of the following when installing sensor. Tighten installation bolts to specified torques.

When installing, make sure there is no foreign material such as iron chips on pick-up and mount-
ing hole of sensor. Make sure no foreign material has been caught in the sensor rotor. Remove
any foreign material and clean the mount.

When installing front sensor, be sure to press rubber grommets in until they lock at the three loca-
tions shown in the figure (2 at shock absorbers and 1 at body panel). When installed, harness
must not be twisted. White line on harness must be visible from front.
PFIA0600E

BRC-58
[VDC/TCS/ABS]
WHEEL SENSORS
Revision: 2006 July 2007 FX35/FX45

When installing rear sensor, attach harness at rear suspension member securely. Besides, har-
ness must not be twisted when installed.

SENSOR ROTOR BRC-59
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
SENSOR ROTORPFP:47970
Removal and InstallationNFS000O5
REMOVAL
Front
Sensor rotor cannot be disassembled. To replace sensor rotor, replace wheel hub and bearing assembly.
Refer to FAX-4, "
Removal and Installation" (2WD models), FA X - 1 0 , "Removal and Installation" (AWD models).
Rear

Follow procedure below to remove rear sensor rotor.
–Remove side flange. Refer to RFD-14, "Removal and Installation" .
–Using a bearing replacer and puller, remove sensor rotor from side flange.
INSTALLATION
Front
Sensor rotor cannot be disassembled. To replace sensor rotor, replace wheel hub and bearing assembly.
Refer to FA X - 4 , "
Removal and Installation" (2WD models), FA X - 1 0 , "Removal and Installation" (AWD models).
Rear

Follow procedure below to install rear sensor rotor.
–Using a drifts, press rear sensor rotor onto side flange.
–Install side flange. Refer to RFD-14, "Removal and Installation" .
Tool number A: ST30720000 (J-25405)
B: ST27863000 ( — )
C: KV40104710 ( — )
SFIA3387E

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) BRC-61
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful of the following when installing ABS actuator and electric unit (control unit).

Tighten the mounting bolts and nuts to the specified torque.

After the work, bleed air from brake piping. Refer to BR-10, "Bleeding Brake System" .

After installing vehicle harness connector in the actuator, make sure connector is securely locked.

When replacing ABS actuator and electric unit (control unit), calibrate steering angle sensor neu-
tral position and decel G sensor. Refer to BRC-6, "
ON-VEHICLE SERVICE" .

BRC-62
[VDC/TCS/ABS]
G SENSOR
Revision: 2006 July 2007 FX35/FX45
G SENSORPFP:47930
Removal and InstallationNFS000O7
REMOVAL
1. Remove center console. Refer to IP-12, "(H) Center Console" .
2. Disconnect G sensor harness connector.
3. Remove G sensor mounting bolts. Then remove G sensor from vehicle.
CAUTION:

Do not drop or strike G sensor, because it has little endur-
ance to impact.

Do not use power tool etc., because G sensor is weak for
the impact.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:

Do not drop or strike G sensor, because it has little endurance to impact.

After performing above works, calibrate decel G sensor (AWD models). Refer to BRC-7, "Calibra-
tion of Decel G Sensor (AWD Models)" .
PFIA0602E

STEERING ANGLE SENSOR BRC-63
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
STEERING ANGLE SENSORPFP:25554
Removal and InstallationNFS000O8
REMOVAL
1. Remove spiral cable assembly. Refer to SRS-44, "SPIRAL CABLE" .
2. Remove steering angle sensor from spiral cable assembly.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
After work, make sure to adjust neutral position of steering angle sensor. Refer to BRC-6, "
Adjustment
of Steering Angle Sensor Neutral Position" .
SFIA1404E

BRC-64
[VDC/TCS/ABS]
STEERING ANGLE SENSOR
Revision: 2006 July 2007 FX35/FX45

WATER OUTLET AND WATER PIPING CO-29
[VQ35DE]
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Revision: 2006 July 2007 FX35/FX45
WATER OUTLET AND WATER PIPINGPFP:11060
ComponentsNBS003K9
Removal and InstallationNBS003KA
REMOVAL
1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the front of cylinder block. Refer to CO-11, "
Changing Engine Coolant" and CO-22, "WATER PUMP" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
4. Remove air duct (inlet), air duct and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR
DUCT" .
5. Remove radiator hose (upper) and heater hose.
6. Remove the following parts, when remove water outlet.

A/T fluid charging pipe; Refer to AT- 2 6 6 , "TRANSMISSION ASSEMBLY" .

Intake manifold collectors (upper and lower). Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .

Rocker cover (right bank). Refer to EM-51, "ROCKER COVER" .
7. Remove engine coolant temperature sensor as necessary. CAUTION:
Be careful not to damage engine coolant temperature sensor.
8. Remove water outlet, heater pipe, water bypass hoses and water pipe.
1. Harness bracket 2. Water hose 3. Water bypass hose
4. Engine coolant temperature sensor 5. Gasket 6. Water outlet
7. Heater hose 8. Water pipe 9. Radiator hose (upper)
10. Heater pipe 11. Washer 12. O-ring
SBIA0484E