sensor INFINITI M35 2006 Factory Service Manual

TROUBLE DIAGNOSIS
BRC-45
[VDC/TCS/ABS]
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BRC
Revision: 2006 January2006 M35/M45
3. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30.
2. Check voltage between ABS actuator and electric unit (control
unit) harness connector E30 terminal 30 and ground.
OK or NG
OK >> Perform self-diagnosis.
NG >>
Repair or replace stop lamp switch circuit.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Inspection 11: Yaw Rate/Side G Sensor CircuitNFS000QV
CAUTION:
Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC
OFF switch "ON") may cause yaw rate/side G sensor system to indicate a malfunction. However,
this is not a malfunction, if normal operation can be resumed after restarting engine. Then erase
memory of self-diagnosis.
If vehicle is on turn-table at entrance to parking garage, or on other moving surface, VDC OFF
indicator lamp may illuminate and CONSULT-II self-diagnosis may indicate yaw rate sensor sys-
tem malfunction. However, in this case there is no malfunction in yaw rate sensor system. Take
vehicle off of turn-table or other moving surface, and start engine. Results will return to normal.
And after doing spin turns or acceleration turns with VDC function is being off (VDC OFF switch
“ON”), too, the results will return to a normal condition by re-starting vehicle.
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
SFIA3038E
ABS actuator and electric
unit (control unit)Ground Condition Voltage
30 —Brake pedal depressedBattery voltage
(Approx. 12 V)
Brake pedal not depressed Approx. 0V
Self-diagnosis results
YAW RATE SENSOR
SIDE G-SEN CIRCUIT

BRC-46
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
2. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect yaw rate/side G sensor connector M145 and ABS actuator and
electric unit (control unit) connector E30, check terminal for deformation, disconnection, looseness, and
so on. If any malfunction is found, repair or replace terminal.
2. Reconnect connector and perform self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
3. CHECK YAW RATE/SIDE G SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect yaw rate/side G sensor connector M145.
2. Turn ignition switch ON or OFF and check voltage between yaw
rate/side G sensor harness connector M145 terminal 3 and
ground.
OK or NG
OK >> GO TO 4.
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
SFIA3044E
Yaw rate/side G sensor Ground Condition Voltage
3—Ignition switch ONBattery voltage
(Approx. 12 V)
Ignition switch OFF Approx. 0V

TROUBLE DIAGNOSIS
BRC-47
[VDC/TCS/ABS]
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BRC
Revision: 2006 January2006 M35/M45
4. CHECK YAW RATE/SIDE G SENSOR HARNESS
1. Turn ignition switch OFF and disconnect Yaw rate/side G sensor connector M145 and ABS actuator and
electric unit (control unit) connector E30.
2. Check continuity between Yaw rate/side G sensor harness con-
nector M145 and ABS actuator and electric unit (control unit)
harness connector E30.
OK or NG
OK >> GO TO 5.
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
5. CHECK DATA MONITOR
1. Connect the Yaw rate/side G sensor connector and ABS actuator and electric unit (control unit) connector.
2. Select “YAW RATE SEN”, “SIDE G-SENSOR” in “Data Monitor” and check Yaw rate/side G sensor
signal.
OK or NG
OK >>Replace ABS actuator and electric unit (control unit).
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
NG >>
Replace Yaw rate/side G sensor.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
SFIA3045E
ABS actuator and electric unit (control unit) Yaw rate/side G sensor Continuity
18 1
Yes 37 2
16 4
20 5
15 6
Vehicle conditionYAW RATE SEN
(Data monitor)SIDE G-SENSOR
(Data monitor)
Stopped Approx. 0 d/s
Approx. 0 m/s
2
Turning right Negative value Negative value
Turning left Positive value Positive value

BRC-50
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
2. CHECK RAS CONTROL UNIT CIRCUIT
1. Perform RAS control unit self-diagnosis. Repair or replace items indicated, then perform RAS control unit
self-diagnosis again. Refer to STC-31, "
SELF-DIAGNOSIS PROCEDURE" .
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Inspection 14: ICC Sensor Integrated Unit Circuit (With ICC)NFS000QY
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK ICC SENSOR INTEGRATED UNIT CIRCUIT
1. Perform ICC sensor integrated unit self-diagnosis. Repair or replace items indicated, then perform ICC
sensor integrated unit self-diagnosis again. Refer to ACS-27, "
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION" .
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Inspection 15: AWD Control Unit Circuit (AWD Model)NFS000QZ
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK AWD C/U CIRCUIT
1. Perform AWD control unit self-diagnosis. Repair or replace items indicated, then perform AWD control unit
self-diagnosis again. Refer to TF-14, "
TROUBLE DIAGNOSIS" .
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Self-diagnosis results
ACC CONT
Self-diagnosis results
4WD SYSTEM

BRC-54
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
2. CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles. Refer to front: FAX-5, "
WHEEL BEAR-
ING INSPECTION" , Rear: RAX-5, "WHEEL BEARING INSPECTION" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning components.
3. CHECK WHEEL SENSOR AND SENSOR ROTOR
Check the following.
Wheel sensor installation for damage.
Sensor rotor installation for damage.
Wheel sensor connector connection.
Wheel sensor harness inspection.
OK or NG
OK >> GO TO 4.
NG >>
Replace wheel sensor or sensor rotor.
Repair harness.
4. CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-23, "
Self-Diagnosis" .
Symptom 2 Unexpected Pedal ReactionNFS000R5
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
Inspection and Adjustment" .
Is the stroke too big?
YES >>Bleed air from brake tube and hose. Refer to BR-11, "Bleeding Brake System" .
Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-
tem fluid leakage, etc. Refer to brake pedal: BR-7, "
COMPONENTS" , brake booster and mas-
ter cylinder: BR-19, "
COMPONENTS" .
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition.Connect connector after inspection.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-53, "
Symptom 1 Excessive ABS Function Operation Frequency" .
NG >> Check brake system.

TROUBLE DIAGNOSIS
BRC-55
[VDC/TCS/ABS]
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BRC
Revision: 2006 January2006 M35/M45
Symptom 3 The Braking Distance Is LongNFS000R6
CAUTION:
The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector to deactivate
ABS. In this condition, check stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-53, "
Symptom 1 Excessive ABS Function Operation Frequency" .
NG >> Check brake system.
Symptom 4 ABS Function Does Not OperateNFS000R7
CAUTION:
ABS does not operate when speed is 10 km/h (6 MPH) or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp turns OFF after ignition switch is turned on or when driving.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-53, "
Symptom 1 Excessive ABS Function Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-23, "
Self-Diagnosis" .
Symptom 5 Pedal Vibration or ABS Operation Sound OccursNFS000R8
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it).However, this is normal.
When shifting gears
When driving on slippery road
During cornering at high speed
When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]
When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1. SYMPTOM CHECK 1
Check if there is pedal vibration or operation sound when the engine is started.
Do symptoms occur?
YES >> GO TO 2.
NO >> Perform self -diagnosis. Refer to BRC-23, "
Self-Diagnosis" .
2. SYMPTOM CHECK 2
Check symptoms when electrical component (headlamps, etc.) switches are operated.
Do symptoms occur?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NO >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-53, "
Symptom 1 Excessive ABS Function Operation Frequency" .

WHEEL SENSOR
BRC-57
[VDC/TCS/ABS]
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B
BRC
Revision: 2006 January2006 M35/M45
WHEEL SENSORPFP:47910
Removal and InstallationNFS000RA
COMPONENT
NOTE:
The above figure (front side) shows left side. Right side is the mirror image.
REMOVAL
Pay attention to the following when removing sensor.
CAUTION:
Do not twist sensor harness as much as possible, when removing it. Pull sensors out without pull-
ing on sensor harness.
Take care to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before
removing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor
function.
INSTALLATION
Pay attention to the following when installing wheel sensor. Tighten installation bolts to the specified torques.
Refer to BRC-57, "
COMPONENT" .
1. Front LH wheel sensor 2. Front LH wheel sensor connector 3. Clamp
4. Bracket 5. Rear RH wheel sensor connector 6. Rear LH wheel sensor connector
7. Rear LH wheel sensor 8. Rear RH wheel sensor
A. Front side B. Rear side : Front
Refer to GI section GI-11, "
Components" for symbol marks in the figure.
SFIA2723J

BRC-58
[VDC/TCS/ABS]
WHEEL SENSOR
Revision: 2006 January2006 M35/M45
When installing, make sure there is no foreign material such as iron chips on and in the mounting hole of
the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove any foreign
material and clean the mount.
When installing wheel sensor, be sure to press rubber grommets in until they lock at locations shown
above in the figure. When installed, harness must not be twisted.

SENSOR ROTOR
BRC-59
[VDC/TCS/ABS]
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BRC
Revision: 2006 January2006 M35/M45
SENSOR ROTORPFP:47970
Removal and InstallationNFS000RB
REMOVAL
CAUTION:
Do not reuse sensor rotor.
Front
Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing assembly.
Refer to FAX-5, "
REMOVAL" .
Rear
Follow the procedure below to remove rear sensor rotor.
–Remove side flange. Refer to RFD-14, "SIDE OIL SEAL" .
–Using a bearing replacer (suitable tool) and puller (suitable tool), remove sensor rotor from side flange.
INSTALLATION
Front
Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing assembly.
Refer to FAX-7, "
INSTALLATION" .
Rear
Follow the procedure below to install rear sensor rotor.
–Using a drift (SST), press rear sensor rotor onto side flange.
–Install side flange. Refer to RFD-14, "SIDE OIL SEAL" .
SFIA2040J

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-61
[VDC/TCS/ABS]
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BRC
Revision: 2006 January2006 M35/M45
7. Remove ABS actuator and electric unit (control unit) from vehicle.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
When replacing ABS actuator and electric unit (control unit), make sure to adjust neutral position of
steering angle sensor. Refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Position"