sensor INFINITI FX35 2006 Service Manual

BRC-4
[VDC/TCS/ABS]
PRECAUTIONS
Revision: 2006 December 2006 FX35/FX45

If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, VDC/TCS/ABS
function may have a malfunction or error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.

If the following components are replaced with non-genuine components or converted, VDC OFF indicator
lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components
related to suspension (shock absorber, strut, spring, bushing, etc.), Tires, wheels (exclude specified size),
components related to brake (pad, rotor, caliper, etc.), components related to engine (muffler, ECM, etc.),
components related to body reinforcement (roll bar, tower bar, etc.).

Driving in the condition of breakage or excessive wear of suspension, tires or components related to the
brakes may cause VDC OFF indicator lamp and SLIP indicator lamp turn on, and the VDC system may
not operate properly.

When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The
noise is a result of the normal operation of the TCS and VDC.

When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as
sharp carves on a freeway), the VDC may not operate normally, or VDC OFF indicator lamp and SLIP
indicator lamp may turn on. However, this is not a malfunction, if normal operation can be resumed after
restarting engine.

Sudden turns (such as spin turns, acceleration turns), drifting, etc. When VDC function is OFF (VDC OFF
SW ON) may cause the G sensor system indicate a malfunction. However, this is not a malfunction, if nor-
mal operation can be resumed after restarting engine.

Change 4 tires at a time. Be sure to use specified-size tires that have the same brand name and pattern.
Wheel sensor errors can be detected be self-diagnosis when tires have wide abrasion variations or the
size is different from the genuine tires.

PREPARATION BRC-5
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNFS000MZ
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsNFS000N0
Tool number
(Kent-Moore No.)
Tool name Description
ST30720000
(J 25405)
Drift
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.19 in) dia.
Installing rear sensor rotor
ST27863000
(—)
Drift
a: 74.5 mm (2.93 in) dia.
b: 62.5 mm (2.46 in) dia.
KV40104710
(—)
Drift
a: 76.3 mm (3.00 in) dia.
b: 67.9 mm (2.67 in) dia.
ZZA0701D
ZZA0832D
ZZA0832D
Tool name Description
1: Flare nut crowfoot
a: 10 mm (0.39 in)/ 12 mm (0.47 in)
2: Torque wrench Installing brake tube
S-NT360

BRC-6
[VDC/TCS/ABS]
ON-VEHICLE SERVICE
Revision: 2006 December 2006 FX35/FX45
ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionNFS000N1
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-II.
(Adjustment can not be done without CONSULT-II.)
1. Stop vehicle with front wheels in straight-ahead position.
2. Perform “CONSULT-II Starting Procedure”. Refer to GI-38, "
CONSULT-II Start Procedure" .
3. Touch “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR ADJUSTMENT” on CONSULT-II screen in this order.
4. Touch “START”. CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi- mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again. CAUTION:
Be sure to perform above operation.
7. Run vehicle with front wheels in straight-ahead position, then stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “STR ANGLE SIG” on CONSULT-II screen. Then make sure “STR ANGLE SIG” is within 0 ± 3.5 deg. If value is more than specification, repeat steps
3 to 7.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM.
10. Turn ignition switch OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) ×
Removing/Installing steering angle sensor ×
Removing/Installing steering components ×
Removing/Installing suspension components ×
Change 4 tires to new ones —
Tire rotation —
Adjusting wheel alignment ×
SFIA0371E

ON-VEHICLE SERVICE BRC-7
[VDC/TCS/ABS]
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Revision: 2006 December 2006 FX35/FX45
Calibration of Decel G Sensor (AWD Models)NFS000N2
NOTE:
After removing/installing or replacing yaw rate/side/decel G sensor, ABS actuator and electric unit (control
unit), suspension components, or after adjusting wheel alignment, make sure to calibration of decel G sensor
before running vehicle.
CAUTION:
To calibrate decel G sensor, make sure to use CONSULT-II. (Adjustment can not be done without CON-
SULT-II.)
1. Stop vehicle with front wheels in straight-ahead position. CAUTION:

The work should be done at a horizontal place when vehicle is in the unloaded vehicle condi-
tion.

Keep all tires inflated to correct pressures. Adjust the tire pressure to the specified pressure
value.
2. Perform “CONSULT-II Starting Procedure”. Refer to GI-38, "
CONSULT-II Start Procedure" .
3. Touch “ABS”, “WORK SUPPORT” and “DECEL G-SEN CALIBRATION” on CONSULT-II screen in this order.
4. Touch “START”. CAUTION:
Set vehicle as shown in the display.
5. After approximately 10 seconds, touch “END”. (After approxi- mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
7. Run vehicle with front wheels in straight-ahead position, then stop.
8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “DECEL G-SEN” on CONSULT-II screen. Then make sure “DECEL G-SEN” is within 0 ± 0.08 G. If value is
more than specification, repeat steps 3 to 7.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM.
10. Turn ignition switch OFF.
SFIA1162E

BRC-8
[VDC/TCS/ABS]
SYSTEM DESCRIPTION
Revision: 2006 December 2006 FX35/FX45
SYSTEM DESCRIPTIONPFP:00000
System DiagramNFS000N3
FunctionsNFS000N4
VDC

In addition to the TCS/ABS function, the driver steering amount and brake operation amount are detected
from steering angle sensor and pressure sensor, and the vehicle's driving status (amount of under steer-
ing / over steering) is determined from information from G sensor, wheel sensor, etc., and this information
is used to improve vehicle stability by controlling the braking and engine power to all four wheels.

SLIP indicator lamp flashes to inform the driver of VDC operation.

During VDC operation, body and brake pedal lightly vibrate and mechanical noises may be heard. This is
normal.

ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp might turn on when vehicle is sub-
ject to strong shaking or large vibration, such as when vehicle is on a turn table, a ship or a steep slope
such as bank while engine is running. In this case, restart engine on a normal road, and if ABS warning
lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn off, there is no malfunction.
TCS

The wheel spin of the drive wheels is detected by ABS actuator and electric unit (control unit) from the
wheel speed signals from four wheels, so if wheel spin occurs, drive wheel right and left brake fluid pres-
sure control and engine fuel cut are performed while throttle value is restricted to reduce the engine
torque and decrease the amount of wheel spin. In addition, the degree throttle is opened is controlled to
achieve the optimum engine torque.

Depending on road circumstances, the driver may have a sluggish feel. This is normal, because the opti-
mum traction has the highest priority under TCS operation.

TCS may be activated any time vehicle suddenly accelerates, suddenly down/upshifts, or is driven on a
road with a varying surface friction coefficient.

During TCS operation, it informs a driver of system operation by flashing SLIP indicator lamp.
SFIA1160E

BRC-22
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
Control Unit Input/Output Signal StandardNFS000NF
REFERENCE VALUE FROM CONSULT-II
CAUTION:
The display shows ABS actuator and electric unit (control unit) calculation data, so a normal value
might be displayed even in the event the output circuit (harness) is open or short-circuited.
Monitor item Display content Data monitor
Condition Reference value in
normal operation
SLCT LVR POSI A/T shift position P: P position
R: R position
N: N position
D: D position
GEAR A/T gear position 1: 1st gear
2: 2nd gear
3: 3rd gear
4: 4th gear
5: 5th gear
FR RH SENSOR
FR LH SENSOR
RR RH SENSOR
RR LH SENSOR Wheel speed Vehicle stopped 0 km/h
Vehicle running (Note 1) Almost in accor-
dance with speedom-
eter display
(within ± 10 %)
ACCEL POS SIG Open/close condition of throttle valve
(linked with accelerator pedal) Accelerator pedal not depressed
(ignition switch ON) 0 %
Depress accelerator pedal
(ignition switch ON) 0 to 100 %
ENGINE SPEED With engine running With engine stopped 0 rpm
Engine running Almost in accor-
dance with tachome-
ter display
STR ANGLE SIG Steering angle detected by steering angle
sensor Straight-ahead Approx. 0 deg
Steering wheel turned –756 to 756 deg
YAW RATE SEN Yaw rate detected by yaw rate sensor Vehicle stopped Approx. 0 d/s
Vehicle running –100 to 100 d/s
SIDE G-SENSOR Transverse G detected by side G sensor Vehicle stopped
Approx. 0 m/s
2
Vehicle running–16.7 to 16.7 m/s2
PRESS SENSOR Brake fluid pressure detected by pressure
sensor With ignition switch turned ON and brake
pedal released Approx. 0 bar
With ignition switch turned ON and brake
pedal depressed 0 to 170 bar
BATTERY VOLT Battery voltage supplied to ABS actuator
and electric unit (control unit) Ignition switch ON 10 to 16 V
STOP LAMP SW Brake pedal operation Brake pedal depressed ON
Brake pedal not depressed OFF
OFF SW VDC OFF switch ON/OFF status VDC OFF switch ON
(When VDC OFF indicator lamp is ON) ON
VDC OFF switch OFF
(When VDC OFF indicator lamp is OFF) OFF
ABS WARN LAMP ABS warning lamp ON condition (Note 2) ABS warning lamp ON ON
ABS warning lamp OFF OFF

TROUBLE DIAGNOSIS BRC-23
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
MOTOR RELAY Operation status of motor and motor relay Ignition switch ON or engine running
(ABS not operated) OFF
Ignition switch ON or engine running
(ABS operated) ON
ACTUATOR RLY Actuator relay operation status Actuator (solenoid) is active
(“ACTIVE TEST” with CONSULT-II) ON
When actuator relay is inactive
(in fail-safe mode) OFF
OFF LAMP VDC OFF indicator lamp status
(Note 3) When VDC OFF indicator lamp is ON ON
When VDC OFF indicator lamp is OFF OFF
SLIP LAMP SLIP indicator lamp status
(Note 4) When SLIP indicator lamp is ON ON
When SLIP indicator lamp is OFF OFF
FR LH IN SOL
FR LH OUT SOL
FR RH IN SOL
FR RH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOL Solenoid valve operation Actuator (solenoid) is active (“ACTIVE
TEST” with CONSULT-II) and actuator
relay is active (ignition switch ON) ON
When actuator (solenoid) is not active or
actuator relay is inactive (in fail-safe
mode) OFF
CV1
CV2
SV1
SV2 VDC/TCS switch-over valve status When actuator (switch-over valve) is
active (“ACTIVE TEST” with CONSULT-II)
and actuator relay is active (ignition
switch ON) ON
When actuator (switch-over valve) is not
active or actuator relay is inactive (in fail-
safe mode) OFF
DECEL G-SEN Longitudinal acceleration detected by decel
G sensor (Note 5) Vehicle stopped Approx. 0 G
Vehicle running -1.7 to +1.7 G
FLUID LEV SW ON/OFF status of brake fluid level switch When brake fluid level switch ON ON
When brake fluid level switch OFF OFF
VDC FAIL SIG
TCS FAIL SIG
ABS FAIL SIG
EBD FAIL SIG Fail signal status VDC fail
TCS fail
ABS fail
EBD fail ON
VDC normal
TCS normal
ABS normal
EBD normal OFF
EBD WARN LAMP Brake warning lamp on condition
(Note 6) Brake warning lamp ON ON
Brake warning lamp OFF OFF
EBD SIGNAL EBD operation EBD active ON
EBD not active OFF
ABS SIGNAL ABS operation ABS active ON
ABS not active OFF
TCS SIGNAL TCS operation TCS active ON
TCS not active OFF
VDC SIGNAL VDC operation VDC active ON
VDC not active OFF
Monitor item Display content
Data monitor
Condition Reference value in
normal operation

TROUBLE DIAGNOSIS BRC-25
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
Self-DiagnosisNFS000OI
DESCRIPTION

If an error is detected in the system, ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp
on the combination meter turn on. In this case, perform self-diagnosis as follows:

While CONSULT-II is used, ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp may be
turned on in a case of no malfunctioning.
OPERATION PROCEDURE
1. Turn ignition switch OFF.
2. Perform “CONSULT-II Starting Procedure”. Refer to GI-38, "
CONSULT-II Start Procedure" .
3. Turn ignition switch ON.
4. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
5. After stopping vehicle, with the engine running, touch “ABS”, “SELF-DIAG RESULTS” in order on the CONSULT-II screen.
CAUTION:
If “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. If it can not be shown after several attempts, ABS actuator and
electric unit (control unit) may have malfunctioned.
6. The self-diagnostic results are displayed. (If necessary, the self-diagnostic results can be printed out by touching “PRINT”.)

When “NO FAILURE” is displayed, check ABS warning lamp, VDC OFF indicator lamp and SLIP indica-
tor lamp.
7. Perform the appropriate inspection from the display item list, and repair or replace the malfunctioning component.
8. Drive the vehicle at approximately 30 km/h (19 MPH) or more for approximately 1 minute. CAUTION:
In a case that a wheel sensor is malfunctioning, ABS warning lamp, VDC OFF indicator lamp, SLIP
indicator lamp will turn on. If vehicle is not driven at approximately 30 km/h (19 MPH) or more for
at least approximately 1 minute after repair of the wheel sensor system, ABS warning lamp, VDC
OFF indicator lamp and SLIP indicator lamp may not turn off even if everything is normal. Check
again to make sure that there is no malfunction on other parts.
ERASE MEMORY
1. Turn ignition switch OFF.
2. Start the engine and touch “ABS”, “SELF-DIAG RESULTS”, “ERASE MEMORY” in order on the CON- SULT-II screen to erase the error memory.
CAUTION:
If the error memory is not erased, re-conduct the operation from step 4.
3. Perform self-diagnosis again, and make sure that diagnostic memory is erased.
4. Drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp turn off.
NOTE:
VDC OFF switch should not stay “ON” position.

BRC-26
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
DISPLAY ITEM LIST
Self-diagnostic item Malfunction detecting condition Check system
RR RH SENSOR- 1
[C1101] Circuit of rear RH wheel sensor is open, shorted or sensor power volt-
age is unusual.
BRC-36, "
Wheel Sensor Cir-
cuit" (Note 1)
RR LH SENSOR- 1
[C1102] Circuit of rear LH wheel sensor is open, shorted or sensor power volt-
age is unusual.
FR RH SENSOR- 1
[C1103] Circuit of front RH wheel sensor is open, shorted or sensor power volt-
age is unusual.
FR LH SENSOR- 1
[C1104] Circuit of front LH wheel sensor is open, shorted or sensor power volt-
age is unusual.
RR RH SENSOR- 2
[C1105] ABS actuator and electric unit (control unit) can not identify sensor
pulses, because of large gap between wheel sensor and sensor rotor.
RR LH SENSOR- 2
[C1106] ABS actuator and electric unit (control unit) can not identify sensor
pulses, because of large gap between wheel sensor and sensor rotor.
FR RH SENSOR- 2
[C1107] ABS actuator and electric unit (control unit) can not identify sensor
pulses, because of large gap between wheel sensor and sensor rotor.
FR LH SENSOR- 2
[C1108] ABS actuator and electric unit (control unit) can not identify sensor
pulses, because of large gap between wheel sensor and sensor rotor.
ABS SENSOR
[ABNORMAL SIGNAL]
[ C 111 5 ] Wheel sensor input is malfunction.
BATTERY VOLTAGE
[ABNORMAL]
[C1109] ABS actuator and electric unit (control unit) power voltage is too low. BRC-45, "
ABS Actuator and
Electric Unit (Control Unit)
Power Supply and Ground Cir-
cuit"
CONTROLLER FAILURE
[ C 111 0 ] Internal malfunction of ABS actuator and electric unit (control unit)
BRC-38, "VDC/TCS/ABS Con-
trol Unit Circuit"
PUMP MOTOR
[ C 1111 ] ( N o t e 3 ) During actuator motor operation with ON, when actuator motor turns
OFF or when control line for actuator motor relay is open. BRC-44, "Actuator Motor Cir-
cuit"During actuator motor operation with OFF, when actuator motor turns
ON or when control line for relay is shorted to ground.
G - SENSOR
[C1113] (Note 4) Decel G sensor is malfunctioning, or signal line of decel G sensor is
open or shorted. BRC-41, "
Yaw Rate/Side G
Sensor (2WD Models), Yaw
Rate/Side/Decel G Sensor
(AWD Models) Circuit"
STOP LAMP SW
[ C 111 6 ] Stop lamp switch circuit is open or shorted.
BRC-47, "Stop Lamp Switch
Circuit"

TROUBLE DIAGNOSIS BRC-27
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
FR LH IN ABS SOL
[C1120] Circuit of front LH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
BRC-43, "
Solenoid and VDC
Change-Over Valve Circuit"
FR LH OUT ABS SOL
[C1121] Circuit of front LH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
FR RH IN ABS SOL
[C1122] Circuit of front RH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
FR RH OUT ABS SOL
[C1123] Circuit of front RH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
RR LH IN ABS SOL
[C1124] Circuit of rear LH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
RR LH OUT ABS SOL
[C1125] Circuit of rear LH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
RR RH IN ABS SOL
[C1126] Circuit of rear RH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
RR RH OUT ABS SOL
[C1127] Circuit of rear RH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
CV1
[C1164] Primary side VDC switch-over solenoid valve 1 (cut valve 1) is open or
shorted, or control line is open or shorted to power supply or ground.
CV2
[C1165] Secondary side VDC switch-over solenoid valve 2 (cut valve 2) is open
or shorted, or control line is open or shorted to power supply or ground.
SV1
[C1166] Primary side VDC switch-over solenoid valve 1 (suction valve 1) is
open or shorted, or control line is open or shorted to power supply or
ground.
SV2
[C1167] Secondary side VDC switch-over solenoid valve 2 (suction valve 2) is
open or shorted, or control line is open or shorted to power supply or
ground.
ACTUATOR RLY
[C1140] (Note 3)

Actuator solenoid valve relay is ON, even if control unit sends off sig-
nal.

Actuator solenoid valve relay is OFF, even if control unit sends on
signal. BRC-44, "
Actuator Motor Cir-
cuit"
PRESS SEN CIRCUIT
[C1142] Pressure sensor signal line is open or shorted, or sensor power volt-
age is unusual, or pressure sensor is malfunctioning. BRC-39, "Pressure Sensor Cir-
cuit"
ST ANG SEN CIRCUIT
[C1143] Neutral position of steering angle sensor is dislocated, or steering
angle sensor is malfunctioning. BRC-40, "Steering Angle Sen-
sor Circuit"
ST ANG SEN SIGNAL
[C1144] Neutral position correction of steering angle sensor is not finished. BRC-6, "Adjustment of Steer-
ing Angle Sensor Neutral Posi-
tion"
YAW RATE SENSOR
[C1145] Yaw rate sensor has generated an error, or yaw rate sensor signal line
is open or shorted. BRC-41, "
Yaw Rate/Side G
Sensor (2WD Models), Yaw
Rate/Side/Decel G Sensor
(AWD Models) Circuit"
SIDE G-SEN CIRCUIT
[C1146] Side G sensor is malfunctioning, or signal line of side G sensor is open
or shorted. BRC-41, "
Yaw Rate/Side G
Sensor (2WD Models), Yaw
Rate/Side/Decel G Sensor
(AWD Models) Circuit"
BR FLUID LEVEL LOW
[C1155] Brake fluid level drops or circuit between ABS actuator and electric unit
(control unit) and brake fluid level switch is open or shorted. BRC-48, "Brake Fluid Level
Switch Circuit"
ST ANG SEN COM CIR
[C1156] CAN communication line or steering angle sensor has generated an
error. BRC-40, "
Steering Angle Sen-
sor Circuit"
BRC-50, "CAN Communication
Circuit"
Self-diagnostic item Malfunction detecting condition Check system