2007 INFINITI FX35 display

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
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SECTION
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B
BRC
Revision: 2006 July 2007 FX35/FX45
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for Brake System ............................. ..... 3
Precautions for Brake Control ............................. ..... 3
PREPARATION ...................................................... ..... 5
Special Service Tools .......................................... ..... 5
Commercial Service Tools ................................... ..... 5
ON-VEHICLE SERVICE ........................................ ..... 6
Adjustment of Steering Angle Sensor Neutral Posi-
tion ...................................................................... ..... 6
Calibration of Decel G Sensor (AWD Models) .... ..... 7
SYSTEM DESCRIPTION ....................................... ..... 8
System Diagram .................................................. ..... 8
Functions ............................................................. ..... 8
VDC .................................................................. ..... 8
TCS .................................................................. ..... 8
ABS .................................................................. ..... 9
EBD .................................................................. ..... 9
Fail-Safe Function ............................................... ..... 9
VDC / TCS SYSTEM ........................................ ..... 9
ABS, EBD SYSTEM ......................................... ..... 9
Hydraulic Circuit Diagram ................................... ... 10
CAN Communication ........................................... ... 10
SYSTEM DESCRIPTION ................................. ... 10
TROUBLE DIAGNOSIS ......................................... ....11
Fail-Safe Function ............................................... .... 11
VDC/TCS SYSTEM .......................................... .... 11
ABS, EBD SYSTEM ......................................... .... 11
How to Proceed with Diagnosis .......................... .... 11
BASIC CONCEPT ............................................ .... 11
DIAGNOSIS FLOWCHART ............................. ... 12
ASKING COMPLAINTS ................................... ... 13
EXAMPLE OF DIAGNOSIS SHEET ................ ... 13
Component Installation Location ......................... ... 14
Schematic ........................................................... ... 15
Wiring Diagram — VDC — .................................. ... 16
Control Unit Input/Output Signal Standard .......... ... 22 REFERENCE VALUE FROM CONSULT-II ......
... 22
CONSULT-II Functions (ABS) ............................. ... 24
CONSULT-II MAIN FUNCTION ........................ ... 24
CONSULT-II SETTING PROCEDURE ............. ... 24
Self-Diagnosis ..................................................... ... 25
DESCRIPTION ................................................. ... 25
OPERATION PROCEDURE ............................. ... 25
ERASE MEMORY ............................................ ... 25
DISPLAY ITEM LIST ........................................ ... 26
Data Monitor ........................................................ ... 29
OPERATION PROCEDURE ............................. ... 29
DISPLAY ITEM LIST ........................................ ... 29
Active Test ........................................................... ... 31
OPERATION PROCEDURE ............................. ... 31
TEST ITEM ....................................................... ... 32
For Fast and Accurate Diagnosis ........................ ... 33
PRECAUTIONS FOR DIAGNOSIS .................. ... 33
Basic Inspection .................................................. ... 34
BRAKE FLUID AMOUNT, LEAKS, AND BRAKE
PADS INSPECTION ......................................... ... 34
POWER SYSTEM TERMINAL LOOSENESS
AND BATTERY INSPECTION .......................... ... 34
ABS WARNING LAMP, VDC OFF INDICATOR
LAMP, SLIP INDICATOR LAMP AND BRAKE
WARNING LAMP INSPECTION ...................... ... 34
TROUBLE DIAGNOSIS FOR SYSTEM ................. ... 36
Wheel Sensor Circuit ........................................... ... 36
INSPECTION PROCEDURE ........................... ... 36
Engine System .................................................... ... 38
INSPECTION PROCEDURE ........................... ... 38
VDC/TCS/ABS Control Unit Circuit ..................... ... 38
INSPECTION PROCEDURE ........................... ... 38
Pressure Sensor Circuit ....................................... ... 39
INSPECTION PROCEDURE ........................... ... 39
Steering Angle Sensor Circuit .............................. ... 41
INSPECTION PROCEDURE ........................... ... 41
Yaw Rate/Side G Sensor (2WD Models), Yaw Rate/
Side/Decel G Sensor (AWD Models) Circuit ........ ... 42
INSPECTION PROCEDURE ........................... ... 42
Solenoid and VDC Change-Over Valve Circuit ... ... 44

BRC-2Revision: 2006 July 2007 FX35/FX45
INSPECTION PROCEDURE ............................
... 44
Actuator Motor Circuit .......................................... ... 45
INSPECTION PROCEDURE ............................ ... 45
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground Circuit .................................. ... 46
INSPECTION PROCEDURE ............................ ... 46
Stop Lamp Switch Circuit ..................................... ... 48
INSPECTION PROCEDURE ............................ ... 48
Brake Fluid Level Switch Circuit .......................... ... 50
INSPECTION PROCEDURE ............................ ... 50
When “ST ANG SEN SIGNAL” Appears on Self-
diagnosis Results Display .................................... ... 51
INSPECTION PROCEDURE ............................ ... 51
When “DECEL G SEN SET” Appears on Self-diag-
nostic Results Display (AWD Models) ................. ... 51
INSPECTION PROCEDURE ............................ ... 51
CAN Communication Circuit ................................ ... 52
INSPECTION PROCEDURE ............................ ... 52
Component Inspection ......................................... ... 52
VDC OFF SWITCH ........................................... ... 52
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 53
Excessive ABS Function Operation Frequency ... ... 53
Unexpected Pedal Reaction ................................ ... 53
The Braking Distance is Long .............................. ... 54 The ABS Function Does Not Operate ..................
... 54
Pedal Vibration or ABS Operation Sound Occurs ... 54
Vehicle Jerks During VDC/TCS/ABS Control ....... ... 55
WHEEL SENSORS ................................................ ... 57
Removal and Installation ...................................... ... 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
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

ON-VEHICLE SERVICE BRC-7
[VDC/TCS/ABS]
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BRC
Revision: 2006 July 2007 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 Start 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-22
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 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 (MPH)]
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
(Engine stopped) 0 %
Depress accelerator pedal
(Engine stopped) 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 July 2007 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

BRC-24
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Note 1: Confirm tire pressure is normal.
Note 2: ON/OFF timing of ABS warning lamp
ON: Approx. Within 2 seconds after ignition switch is turned ON, or when a malfunction is detected.
OFF: Approx. 2 seconds after ignition switch is turned ON (when system is in normal operation) and VDC/TCS function is not activa ted.
Note 3: ON/OFF timing of VDC OFF indicator lamp
ON: Approx. Within 2 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC OFF switch is ON.
OFF: Approx. 2 seconds after ignition switch is turned ON (when system is in normal operation.) And when VDC OFF switch is OFF.
Note 4: ON/OFF timing of SLIP indicator lamp
ON: Approx. Within 2 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC/TCS function is activa ted
while driving.
OFF: Approx. 2 seconds after ignition switch is turned ON (when system is in normal operation) and VDC/TCS function is not activa ted.
Flashing: VDC/TCS function is active during driving
Note 5: Only AWD models.
Note 6: Serves as EBD warning lamp.
CONSULT-II Functions (ABS)NFS000NG
CONSULT-II MAIN FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
CRANKING SIG CRANKING status Cranking ON
Not cranking OFF
4WD FAIL REQ ETS fail status (Note 5) ETS fail ON
ETS normal OFF
2WD/4WD Drive axle 2WD model 2WD
AW D mod el AW D
Monitor item Display content
Data monitor
Condition Reference value in
normal operation
Diagnostic test mode Function Reference
WORK SUP-
PORT This mode enables a technician to adjust some devices faster and more accurately
by following the indications on CONSULT-II. BRC-6, "
ON-VEHICLE SER-
VICE"
SELF-DIAG
RESULTS Self-diagnostic results can be read and erased quickly.
BRC-25, "Self-Diagnosis"
DATA MONI-
TOR Input/Output data in the ABS actuator and electric unit (control unit) can be read.
BRC-29, "Data Monitor"
CAN DIAG
SUPPORT
MNTR The results of transmit/receive diagnosis of communication can be read.
LAN-44, "CAN Diagnostic
Support Monitor"
ACTIVE TEST Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the
ABS actuator and electric unit (control unit) and also shifts some parameters in a
specified range. BRC-31, "Active Test"
FUNCTION
TEST Performed by CONSULT-II instead of a technician to determine whether each sys-
tem is “OK” or “NG”. —
ECU PART
NUMBER ABS actuator and electric unit (control unit) part number can be read. —

TROUBLE DIAGNOSIS BRC-25
[VDC/TCS/ABS]
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BRC
Revision: 2006 July 2007 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 Start 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 “SELECT SYSTEM” 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 July 2007 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-46, "
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-45, "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-42, "
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-48, "Stop Lamp Switch
Circuit"