Infiniti FX35, FX50 (S51). Manual - part 253

EBD

BRC-43

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

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Component Description

INFOID:0000000005234496

7.

Front wheel sensor

8.

Yaw rate/side G sensor

9.

VDC OFF switch

10. Rear wheel sensor

A.

Back of spiral cable assembly

B.

Combination meter

C.

Inside brake master cylinder cover

D.

Steering knuckle

E.

Under center console

F.

Instrument driver lower panel

G.

Rear final drive assembly

Component parts

Reference

ABS actuator and electric unit (control unit)

Pump

BRC-58, "Description"

Motor

Actuator relay (main relay)

BRC-60, "Description"

Solenoid valve

BRC-66, "Description"

Pressure sensor

BRC-72, "Description"

VDC switch-over valve
(USV1, USV2, HSV1, HSV2)

BRC-80, "Description"

Wheel sensor

BRC-50, "Description"

Yaw rate/side G sensor

BRC-77, "Description"

Steering angle sensor

BRC-74, "Description"

VDC OFF switch

BRC-101, "Description"

ABS warning lamp

BRC-103, "Description"

Brake warning lamp

BRC-104, "Description"

VDC OFF indicator lamp

BRC-105, "Description"

SLIP indicator lamp

BRC-106, "Description"

Vacuum sensor (Only VK50VE models)

BRC-87, "Description"

BRC-44

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]

CONSULT-III Function

INFOID:0000000005234497

FUNCTION

CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

WORK SUPPORT

CAUTION:

Erase DTC memory of the lane camera unit after implementing work support. Refer to 

CCS-463, "CON-

SULT-III Function (LANE CAMERA)"

.

SELF DIAGNOSTIC RESULT

Operation Procedure

Before performing the self-diagnosis for “ABS” with CONSULT-III, start engine and drive vehicle at 30 km/h (19
MPH) or more for approximately 1 minute.

Display Item List

Refer to 

BRC-119, "DTC Index"

.

How to Erase Self-diagnosis Results

After erasing DTC memory for “ABS” with CONSULT-III, start the engine and drive the 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, SLIP indicator lamp and brake warning lamp turn OFF.

CAUTION:

If memory cannot be erased, perform applicable diagnosis.
NOTE:
• When the wheel sensor malfunctions, after inspecting the wheel sensor system, ABS warning lamp, VDC

OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn OFF even when the system is
normal unless the vehicle is driven at approximately 30 km/h (19 MPH) or more for approximately 1 minute.

• Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or in case of brake

fluid level switch operation (when brake fluid is insufficient).

• VDC OFF switch should not stay in “ON” position.

DATA MONITOR

Display Item List

Diagnostic test mode

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following 
the indications on CONSULT-III.

Self diagnostic result

Self-diagnostic results can be read and erased quickly.

Data monitor

Input/Output data in the ABS actuator and electric unit (control unit) can be read.

Active test

CONSULT-III drives some actuators apart from ABS actuator and electric unit (control unit) and 
also shifts some parameters in a specified range.

ECU identification

ABS actuator and electric unit (control unit) part number can be read.

Special Function

Specific LDP data in the ABS actuator and electric unit (control unit) can be read.

Item

Description

ST ANGLE SENSOR ADJUSTMENT

Adjusts the neutral position of the steering angle sensor.

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-45

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

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: Applicable 

: Optional item

Monitor item (Unit)

SELECT MONITOR ITEM

Remarks

ECU INPUT 

SIGNALS

MAIN SIGNALS

FR LH SENSOR
[km/h (MPH)]

×

×

Wheel speed

FR RH SENSOR
[km/h (MPH)]

×

×

RR LH SENSOR
[km/h (MPH)]

×

×

RR RH SENSOR
[km/h (MPH)]

×

×

STOP LAMP SW
(On/Off)

×

×

Stop lamp switch signal status

BATTERY VOLT
(V)

×

×

Battery voltage supplied to the ABS actuator and electric 
unit (control unit)

SLCT LVR POSI

×

×

A/T selector lever position

YAW RATE SEN
(d/s)

×

×

Yaw rate detected by yaw rate/side G sensor

OFF SW
(On/Off)

×

×

VDC OFF switch signal status

ACCEL POS SIG
(%)

×

Throttle actuator opening/closing is displayed (Linked with 
accelerator pedal)

SIDE G-SENSOR

(m/s

2

)

×

Transverse G detected by yaw rate/side G sensor

STR ANGLE SIG
(

°

)

×

Steering angle detected by steering angle sensor

PRESS SENSOR
(bar)

×

Brake fluid pressure detected by pressure sensor

ENGINE RPM
[tr/min (rpm)]

×

Engine speed

FR RH IN SOL
(On/Off) (Note 1)

×

Operation status of each solenoid valve

FR RH OUT SOL
(On/Off) (Note 1)

×

FR LH IN SOL
(On/Off) (Note 1)

×

FR LH OUT SOL
(On/Off) (Note 1)

×

RR RH IN SOL
(On/Off) (Note 1)

×

RR RH OUT SOL
(On/Off) (Note 1)

×

RR LH IN SOL
(On/Off) (Note 1)

×

RR LH OUT SOL
(On/Off) (Note 1)

×

MOTOR RELAY
(On/Off)

×

Motor and motor relay operation

ACTUATOR RLY
(On/Off) (Note 1)

×

Actuator relay operation

ABS WARN LAMP
(On/Off)

×

ABS warning lamp

BRC-46

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

OFF LAMP
(On/Off)

×

VDC OFF indicator lamp

SLIP LAMP
(On/Off)

×

SLIP indicator lamp

FLUID LEV SW
(On/Off)

Brake fluid level switch signal status

PARK BRAKE SW
(On/Off)

Parking brake switch signal status

EBD SIGNAL
(On/Off)

EBD operation

ABS SIGNAL
(On/Off)

ABS operation

TCS SIGNAL
(On/Off)

TCS operation

VDC SIGNAL
(On/Off)

VDC operation

ABS FAIL SIG
(On/Off)

ABS fail-safe signal

TCS FAIL SIG
(On/Off)

TCS fail-safe signal

VDC FAIL SIG
(On/Off)

VDC fail-safe signal

CRANKING SIG
(On/Off)

Crank operation

USV[FR-RL]
(On/Off) (Note 1)

VDC switch-over valve

USV[FL-RR]
(On/Off) (Note 1)

HSV[FR-RL]
(On/Off) (Note 1)

HSV[FL-RR]
(On/Off) (Note 1)

BST OPER SIG
(On/Off)

Booster operation signal

V/R OUTPUT
(On/Off)

Solenoid valve relay activated

M/R OUTPUT
(On/Off)

Actuator motor and motor relay activated

LDP) APP SEN
(%) (Note 2)

×

×

Accelerator pedal position sensor status received from 
ECM via CAN communication

LDP) ICC MAIN SW
(On/Off) (Note 2)

×

×

ICC main switch status received from ECM via CAN com-
munication

LDP) LDP ON SW
(On/Off) (Note 2)

×

×

LDP switch status received from ECM via CAN communi-
cation

LDP) WIPER SIGNAL
(Stop/PRTCT/1low/1high/Low/High) 
(Note 2)

×

×

Front wiper operating condition received from BCM via 
CAN communication

LDP) BRAKE SW
(On/Off) (Note 2)

×

×

Brake switch signal status

LDP) STOP LMP SW
(On/Off) (Note 2)

×

×

Stop lamp switch signal status

Monitor item (Unit)

SELECT MONITOR ITEM

Remarks

ECU INPUT 

SIGNALS

MAIN SIGNALS