Infiniti FX35, FX50 (S51). Manual - part 276

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-135

< REMOVAL AND INSTALLATION >

[VDC/TCS/ABS]

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7.

Remove ABS actuator and electric unit (control unit) bracket mounting nuts.

8.

Remove ABS actuator and electric unit (control unit) from vehicle.

INSTALLATION

Note the following, and install in the reverse order of removal.
• Before servicing, disconnect the battery cable from negative terminal.
• To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being damaged. To

install, use flare nut crowfoot and torque wrench.

• Never apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
• Never remove and install actuator by holding harness.
• After work is completed, bleed air from brake tube. Refer to 

BR-11, "Bleeding Brake System"

.

• After installing harness connector in the ABS actuator and electric unit (control unit), make sure harness

connector is securely locked. 

• When replacing ABS actuator and electric unit (control unit), make sure to adjust neutral position of steering

angle sensor. Refer to 

BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION :

Description"

.

BRC-136

< REMOVAL AND INSTALLATION >

[VDC/TCS/ABS]

YAW RATE/SIDE G SENSOR

YAW RATE/SIDE G SENSOR

Exploded View

INFOID:0000000005234667

Removal and Installation

INFOID:0000000005234668

REMOVAL

CAUTION:

Never drop or strike yaw rate/side G sensor, or never use power tool etc., because yaw rate/side G
sensor is sensitive to the impact.

1.

Remove console finisher assembly. Refer to 

IP-22, "Exploded View"

.

2.

Disconnect yaw rate/side G sensor harness connector.

3.

Remove mounting bolts. Remove yaw rate/side G sensor.

INSTALLATION

Note the following, and install in the reverse order of removal.
• Never drop or strike yaw rate/side G sensor, or never use power tool etc., because yaw rate/side G sensor is

sensitive to the impact.

1.

Yaw rate/side G sensor

2.

Harness connector

: Vehicle front

Refer to 

GI-4, "Components"

 for symbol makes in the figure.

JSFIA0197GB

STEERING ANGLE SENSOR

BRC-137

< REMOVAL AND INSTALLATION >

[VDC/TCS/ABS]

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STEERING ANGLE SENSOR

Exploded View

INFOID:0000000005234669

Removal and Installation

INFOID:0000000005234670

REMOVAL

1.

Remove spiral cable assembly. Refer to 

SR-14, "Exploded View"

.

2.

Remove steering angle sensor from spiral cable assembly.

INSTALLATION

Note the following, and install in the reverse order of removal.
• Never reuse steering angle sensor.
• When installing steering angle sensor, tighten it to the specified torque with an electric screwdriver. Be sure

to tighten it completely with no floating and tilting.

• After work, make sure to adjust neutral position of steering angle sensor. Refer to 

BRC-9, "ADJUSTMENT

OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description"

.

1.

Steering angle sensor

: Vehicle front

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

JSFIA0237GB

BRC-138

< SYSTEM DESCRIPTION >

[BRAKE ASSIST]

PREVIEW FUNCTION

SYSTEM DESCRIPTION

PREVIEW FUNCTION

System Description

INFOID:0000000005234671

FUNCTION DESCRIPTION

When the Preview Function identifies the need to apply emergency braking by sensing a vehicle ahead in the
same lane and the distance and relative speed from it, it applies the brake pre-pressure before the driver
depress the brake pedal and helps improve brake response by reducing pedal free play.
The Preview Function shares component parts and diagnosis with the ICC (Intelligent Cruise Control) system.

CAUTION:

This system is only an aid to assist braking operation and is not a collision warning or avoidance
device. It is the driver

′

s responsibility to stay alert, drive safely and be in control of the vehicle at all

times.

OPERATION DESCRIPTION

Operation

• The system detects the distance to the vehicle in front with the ICC sensor integrated unit of ICC (Full Speed

Range) and judges the necessity of emergency braking. 

• The system detects the accelerator pedal release operation of the driver by the accelerator pedal position

sensor and estimates the driver's brake operation intention. 

• If the system is judged that the emergency braking is necessary or that the driver has the intention to oper-

ate the brake it supplies the power supply to the brake booster to apply pre-pressure and adjusts the brake
play. 

NOTE:
This system will not operate when the vehicle is moving at approximately 32 km/h (20 MPH) or less.

End of Operation

The pre-pressure function ceases when the following conditions are met:
1.

When the driver depresses the accelerator pedal or the brake pedal.

2.

If the driver does not operate the accelerator pedal or brake pedal within approximately 1 second.