G-sensor INFINITI M35 2006 Factory Service Manual

BRC-2Revision: 2006 January2006 M35/M45 Inspection 12: Brake Fluid Level Switch Circuit ...... 48
Inspection 13: RAS Control Unit Circuit (With RAS) ... 49
Inspection 14: ICC Sensor Integrated Unit Circuit
(With ICC) ............................................................... 50
Inspection 15: AWD Control Unit Circuit (AWD
Model) ..................................................................... 50
Inspection 16: CAN Communication Circuit ............ 51
Inspection 17: VDC OFF Switch Circuit .................. 51
Inspection 18: Parking Brake Switch Circuit ........... 52
Inspection 19: Warning Lamp and Indicator Lamp
Circuit ..................................................................... 53
Symptom 1 Excessive ABS Function Operation Fre-
quency .................................................................... 53
Symptom 2 Unexpected Pedal Reaction ................ 54
Symptom 3 The Braking Distance Is Long ............. 55
Symptom 4 ABS Function Does Not Operate ........ 55
Symptom 5 Pedal Vibration or ABS Operation
Sound Occurs ......................................................... 55
Symptom 6 Vehicle Jerks During VDC/TCS/ABS
Control .................................................................... 56WHEEL SENSOR ................................................... ... 57
Removal and Installation ......................................... 57
COMPONENT ...................................................... 57
REMOVAL ............................................................ 57
INSTALLATION .................................................... 57
SENSOR ROTOR ...................................................
... 59
Removal and Installation ......................................... 59
REMOVAL ............................................................ 59
INSTALLATION .................................................... 59
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 60
Removal and Installation ......................................... 60
COMPONENT ...................................................... 60
REMOVAL ............................................................ 60
INSTALLATION .................................................... 61
G-SENSOR ................................................................ 62
Removal and Installation ......................................... 62
REMOVAL ............................................................ 62
INSTALLATION .................................................... 62
STEERING ANGLE SENSOR ................................... 63
Removal and Installation ......................................... 63
REMOVAL ............................................................ 63
INSTALLATION .................................................... 63

BRC-28
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
E, S SIDE G-SENSORTransverse G detected by side G
sensorVehicle stopped
Approx. 0 m/s
2
Vehicle turning rightNegative value
(m/s2 )
Vehicle turning leftPositive value
(m/s
2 )
E, S STR ANGLE SIGSteering angle detected by steering
angle sensorStraight-ahead Approx. 0
Steering wheel turned –720 to 720
E, S PRESS SENSORBrake fluid pressure detected by
pressure sensorWith ignition switch turned
ON and brake pedal
releasedApprox. 0 bar
With ignition switch turned
ON and brake pedal
depressed–40 to 300 bar
E, S ENGINE RPM With engine runningWith engine stopped 0 rpm
Engine runningAlmost in accor-
dance with tachom-
eter display
E, S FLUID LEV SW Brake fluid level switchWhen brake fluid level
switch ONON
When brake fluid level
switch OFF OFF
E, S PARK BRAKE SW Parking brake switchParking brake switch is
activeON
Parking brake switch is
inactiveOFF
M, SFR RH IN SOL
FR RH OUT SOL
FR LH IN SOL
FR LH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOLOperation status of all solenoid
valve Actuator (solenoid valve) is
active (“ACTIVE TEST”
with CONSULT-II) or actua-
tor relay is inactive (in fail-
safe mode)ON
When the actuator (sole-
noid valve) is not active
and actuator relay is active
(ignition switch ON)OFF
M, S MOTOR RELAY Motor and motor relay operationWhen the motor relay and
motor are operatingON
When the motor relay and
motor are not operatingOFF
M, SACTUATOR RLY
(Note 3)Actuator relay operationWhen the actuator relay is
operatingON
When the actuator relay is
not operatingOFF
M, S ABS WARN LAMPABS warning lamp
(Note 4)When ABS warning lamp is
ONON
When ABS warning lamp is
OFFOFF
M, S OFF LAMPVDC OFF indicator lamp
(Note 4)When VDC OFF indicator
lamp is ONON
When VDC OFF indicator
lamp is OFFOFF E: ECU INPUT SIGNALS M: MAIN SIGNALS S: SELECTION FROM MENU
SELECT
MONITOR
ITEM Monitor item Display contentData monitor
ConditionReference value in
normal operation

TROUBLE DIAGNOSIS
BRC-47
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
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-62
[VDC/TCS/ABS]
G-SENSOR
Revision: 2006 January2006 M35/M45
G-SENSORPFP:47930
Removal and InstallationNFS000RD
CAUTION:
Do not drop or strike yaw rate/side G sensor, because it has little endurance to impact.
Do not use power tool etc., because yaw rate/side G sensor is sensitive for the impact.
REMOVAL
1. Remove center console. Refer to IP-10, "Component Parts
Drawing" .
2. Disconnect yaw rate/side G sensor harness connector.
3. Remove mounting bolts. Remove yaw rate/side G sensor.
(Shown in the figure 1).
INSTALLATION
Installation is the reverse order of removal.
SFIA2725J
Yaw rate/side G sensor mounting bolt
: 6.5 Nꞏm (0.66 kgꞏm, 58 in-lb)