2006 INFINITI M35 sensor

TROUBLE DIAGNOSIS
BRC-27
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
Data MonitorNFS000QH
OPERATION PROCEDURE
1. Touch “START (NISSAN BASED VHCL)”, “ABS”, “DATA MONITOR” in order on CONSULT-II screen.
CAUTION:
When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on
the ignition switch, “ABS” might not be displayed in the system selection screen. In this case,
repeat the operation from step 1.
2. At the monitor item selection screen, touch one of the items “ECU INPUT SIGNALS”, “MAIN SIGNALS” or
“SELECTION FROM MENU”.
3. Touch “START” to proceed to the data monitor screen.
DISPLAY ITEM LIST
CAUTION:
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short - circuited.
E: ECU INPUT SIGNALS M: MAIN SIGNALS S: SELECTION FROM MENU
SELECT
MONITOR
ITEM Monitor item Display contentData monitor
ConditionReference value in
normal operation
E, M, SFR LH SENSOR
FR RH SENSOR
RR LH SENSOR
RR RH SENSORWheel speed0 [km/h] Vehicle stopped
Nearly matches the speed
meter display (
10 % or
less)Vehicle running
(Note 1)
E, M, S STOP LAMP SW Brake pedal operationWhen brake pedal is
depressedON
When brake pedal is not
depressedOFF
E, M, S BATTERY VOLTBattery voltage supplied to the ABS
actuator and electric unit (control
unit)Ignition switch ON 10 – 16 V
E, M, S GEAR Gear position determined by TCM1st gear
2nd gear
3rd gear
4th gear
5th gear1
2
3
4
5
E, M, S SLCT LVR POSI A/T shift positionP position
R position
N position
D positionP
R
N
D
E, M, S OFF SW VDC OFF switch ON/OFFVDC OFF switch ON
(When VDC OFF indicator
lamp is ON)ON
VDC OFF switch OFF
(When VDC OFF indicator
lamp is OFF)OFF
E, M, S YAW RATE SENYaw rate detected by yaw rate/side
G sensorWhen vehicle stop Approx. 0 d/s
When vehicle turning (-75 to 75 d/s)
E, M, S4WD MODE MON
(Note 2)AWD activated Engine running AUTO
E, S ACCEL POS SIG Throttle actuator opening/closing is
displayed (linked with accelerator
pedal)Accelerator pedal not
depressed (ignition switch
is ON)0 %
Depress accelerator pedal
(ignition switch is ON)0 - 100 %

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

BRC-32
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
For Fast and Accurate DiagnosisNFS000QJ
PRECAUTIONS FOR DIAGNOSIS
Before performing diagnosis, always read General Information (GI) to confirm general precautions. Refer
to GI-4, "
General Precautions" .
If steering angle sensor, steering system parts, suspension system parts, ABS actuator and electric unit
(control unit) or tires have been replaced, or if wheel alignment has been adjusted, be sure to adjust neu-
tral position of steering angle sensor before driving. Refer to BRC-6, "
Adjustment of Steering Angle Sen-
sor Neutral Position" .
After diagnosis is finished, be sure to erase memory. Refer to BRC-23, "ERASE MEMORY" .
When checking continuity and voltage between unit, be sure to check for disconnection, looseness, bend,
or collapse of connector terminals. If any malfunction is found, repair or replace connector terminals.
For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.
Move harness, harness connector, and terminals to check for poor connections.
If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
The following symptoms may be caused by normal operations.
Symptom Symptom description Result
Motor operation soundThis is sound of motor inside VDC actuator. Slight sound may occur
during VDC, TCS, and ABS operation.
Normal
Just after engine starts, the motor operating sound may be heard. This
is a normal condition of the system operation check.
System operation check
soundWhen engine starts, slight “click” sound may be heard from engine
room. This is normal and is part of system operation check.Normal
VDC/TCS operation
(SLIP indicator lamp ON)TCS may activate momentarily if wheel speed changes when driving
over location where friction varies, when downshifting, or when fully
depressing accelerator pedal.Normal
Cancel the VDC/TCS
function for the
inspection on a chas-
sis dynamometer. When checking speed meter etc. with a 2-wheel-drive chassis dyna-
mometer, vehicle speed is not increased by pressing down on the accel-
erator.
ABS operation (Longer stop-
ping distance)On roads with low friction, such as snowy roads or gravel roads, vehi-
cles with ABS may require a longer stopping distance. Therefore, when
driving on such roads, avoid overconfidence and keep speed sufficiently
low.Normal
Insufficient feeling of accel-
erationDepending on road conditions, driver may feel that feeling of accelera-
tion is insufficient. This is because traction control, which controls
engine and brakes to achieve optimal traction, has the highest priority
(for safety). As a result, there may be times when acceleration is slightly
less than usual for the same accelerator pedal operation.Normal

BRC-34
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Inspection 1: Wheel Sensor CircuitNFS000QL
CAUTION:
Do not check between wheel sensor terminals.
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK TIRE
Check air pressure, wear and size.
Are air pressure, wear and size within standard?
YES >> GO TO 3.
NO >>
Adjust air pressure, or replace tire.
Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
3. CHECK SENSOR AND SENSOR ROTOR
Check sensor rotor for damage.
Check wheel sensor for damage, disconnection or looseness.
OK or NG
OK >> GO TO 4.
NG >>
Repair wheel sensor mount or replace sensor rotor. Then perform the self-diagnosis.
Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
4. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30 and
malfunctioning wheel sensor connector E41(FR-RH), E59(FR-LH), B101(RR-RH), B102(RR-LH). Check
terminal to see if it is deformed, disconnected, loose, etc., Repair or replace it if any malfunction condition
is found.
2. Reconnect connectors and then perform the self-diagnosis. Refer to BRC-23, "
OPERATION PROCE-
DURE" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
Self-diagnosis results
FR RH SENSOR-1, -2
FR LH SENSOR-1, -2
RR RH SENSOR-1, -2
RR LH SENSOR-1, -2
ABS SENSOR [ABNORMAL SIGNAL]

TROUBLE DIAGNOSIS
BRC-35
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E41(FR-RH), E59(FR-LH), B101(RR-RH),
B102(RR-LH) and ABS actuator and electric unit (control unit)
connector E30.
2. Check continuity between terminals. (Also check continuity
when steering wheel is turned right and left and when sensor
harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
6. CHECK WHEEL SENSOR
1. Replace wheel sensor that resulted in malfunction by self-diagnosis.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then
perform self-diagnosis.
Is above displayed on the self-diagnosis display?
OK >> INSPECTION END
NG >>
Replace ABS actuator and electric unit (control unit).
Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
SFIA3030E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric
unit (control
unit)Wheel sensorABS actua-
tor and elec-
tric unit
(control unit)Wheel sensorABS actua-
tor and elec-
tric unit
(control
unit)
(signal)Ground
Front RH 9 1 10 2 9, 10
— Front LH 26 1 5 2 26, 5
Rear RH 7 1 29 2 7, 29
Rear LH 6 1 27 2 6, 27
Power supply circuit : Yes
Signal circuit : Yes
Ground circuit : No

TROUBLE DIAGNOSIS
BRC-41
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
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.
4. CHECK SOLENOID, VDC CHANGE-OVER VALVE, ACTUATOR RELAY GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E30 terminal 1, 4 and ground.
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 >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Inspection 7: Pressure Sensor CircuitNFS000QR
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >>Replace ABS actuator and electric unit (control unit).
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
NO >> INSPECTION END
Inspection 8: Steering Angle Sensor CircuitNFS000QS
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
SFIA3033E
ABS actuator and electric unit (control unit) Ground Continuity
1, 4 — Yes
Self-diagnosis results
PRESS SEN CIRCUIT
Self-diagnosis results
ST ANG SEN CIRCUIT

BRC-42
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
2. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect 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 STEERING ANGLE SENSOR HARNESS
1. Check CAN communication system. Refer to BRC-51, "
Inspection 16: CAN Communication Circuit" .
2. Turn ignition switch OFF and disconnect steering angle sensor connector.
3. Check continuity between steering angle sensor harness con-
nector M47 terminal 2 and ground.
4. Turn ignition switch ON and check voltage between steering
angle sensor harness connector M47 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.
SFIA2970E
Steering angle sensor Ground Continuity
2—Yes
SFIA2971E
Steering angle sensor Ground Voltage
3 — Battery voltage (Approx. 12 V)

TROUBLE DIAGNOSIS
BRC-43
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
4. CHECK DATA MONITOR
1. Turn ignition switch OFF and connect the steering angle sensor connector and ABS actuator and electric
unit (control unit) connector.
2. Select “STR ANGLE SIG” in “Data Monitor” and check steering angle sensor signal.
OK or NG
OK >> Perform self-diagnosis.
NG >>
Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sen-
sor. Refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Position" .
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Inspection 9: Park/Neutral Position (PNP) Switch CircuitNFS000QT
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 DATA MONITOR
Select “SLCT LVR POSI” in “Data Monitor” and check Park/Neutral position switch 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 >> GO TO 3.Steering conditionSTR ANGLE SIG
(Data monitor)
Driving straight – 2.5
to + 2.5
Tu r n 9 0 to right Approx.+ 90
Tu r n 9 0 to left Approx.– 90
Self-diagnosis results
PNP POSI SIG
Selector lever positionSLCT LVR POSI
(Data monitor)
P position P
R position R
N position N
D position D