The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000007818163

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.

Precaution for Brake System

INFOID:0000000007576782

WARNING:

Since dust covering the front and rear brakes has an affect on human body, the dust must be removed
with a dust collector. Never splatter the dust with an air blow gun.
• Brake fluid use refer to

MA-10, "Fluids and Lubricants"

• Never reuse drained brake fluid.
• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off

immediately and wash with water if it gets on a painted surface.

• Always confirm the specified tightening torque when installing the brake pipes.

PIIB3706J

Revision: 2011 October

2012 JUKE

PRECAUTIONS

BRC-5

< PRECAUTION >

[WITH VDC]

BRC

• After pressing the brake pedal more deeply or harder than normal driving, such as air bleeding, check the

each item of brake pedal. Adjust brake pedal if it is outside the standard value.

• Never use mineral oils such as gasoline or light oil to clean. They may damage rubber parts and cause

improper operation.

• Always loosen the brake tube flare nut with a flare nut wrench.
• Tighten the brake tube flare nut to the specified torque with a crow-

foot (A) and torque wrench (B).

• Turn the ignition switch OFF and disconnect the ABS actuator and

electric unit (control unit) harness connector or the battery negative
terminal before performing the work.

• Check that no brake fluid leakage is present after replacing the

parts.

Precaution for Brake Control system

INFOID:0000000007576783

• Always perform a pre-driving check to drive the vehicle.
• Always check speed and safety while driving the vehicle.
• To operate CONSULT while driving, more than one person is required to be in the vehicle to avoid interfer-

ence to driving and ensure safety.

• Slight vibrations are felt on the brake pedal and the operation noises occur, when VDC function, TCS func-

tion, ABS function EBD function or brake limited slip differential (BLSD) function operates. This is not a mal-
function because it is caused by VDC function, TCS function, ABS function EBD function or brake limited slip
differential (BLSD) function that is normally operated.

• When starting engine or when starting vehicle just after starting engine, brake pedal may vibrate or motor

operating noise may be heard from engine compartment. This is normal condition.

• Brake stopping distance may become longer than models without ABS function depending on the road con-

ditions, when ABS function is operated on slippery road like rough road, gravel road or snowy road.

• When a malfunction is indicated, always collect information from the customer about conditions of occur-

rence, estimate cause and perform operation. Check brake booster operation, brake fluid level and brake
fluid leakage, as well as electrical system.

• The optimum performance is achieved by control for VDC function, TCS function, ABS function EBD func-

tion and brake limited slip differential (BLSD) function when all of brakes, suspensions and tires installed on
the vehicle are the specified size and parts. Brake performance and controllability may be negatively
affected when other parts than the specified are installed.

• Brake stopping distance may become longer and steering stability may be negatively affected, when tires in

different size and combination or other parts than the specified are used.

• When a radio (including wiring), antenna and antenna lead line are located near ABS actuator and electric

unit (control unit), a malfunction or improper operation may occur for the control of VDC function, TCS func-
tion, ABS function EBD function and brake limited slip differential (BLSD) function.

• When the following items are replaced by other parts than genuine parts or modified, ABS warning lamp,

brake warning lamp and VDC warning lamp may turn ON, and the control may not operate normally for VDC
function, TCS function, ABS function EBD function and brake limited slip differential (BLSD) function.

- Suspension component parts (shock absorber, spring, bushing and others)
- Tire and wheel (other than the specified size)
- Brake component parts (brake pad, disc rotor, brake caliper and others)
- Engine component parts (ECM, muffler and others)
- Body reinforcement component parts (rollover bar, tower bar and others)
• When suspension, tire and brake component parts are excessively worn or deteriorated and the vehicle is

driven, ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON, and the control may
not operate normally for VDC function, TCS function, ABS function EBD function and brake limited slip differ-
ential (BLSD) function.

• ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON, when only front wheel or rear

wheel is rotated using a free roller. This is not a malfunction, because it is caused by wheel speed difference
between wheel that is rotated and wheel that is not rotated. In this case, perform self-diagnosis, check self-
diagnosis results, and erase memory.

• When power supply voltage is not normal, ABS warning lamp, brake warning lamp and VDC warning lamp

turn ON. ABS actuator and electric unit (control unit) stops control for VDC function, TCS function, ABS func-

JPFIA0001ZZ

Revision: 2011 October

2012 JUKE

BRC-6

< PRECAUTION >

[WITH VDC]

PRECAUTIONS

tion EBD function and brake limited slip differential (BLSD) function. Ordinary brake operates. After power
supply returns to normal, ABS warning lamp, brake warning lamp and VDC warning lamp turn OFF. The con-
trol becomes operative for VDC function, TCS function, ABS function EBD function and brake limited slip dif-
ferential (BLSD) function.

• Brake pedal vibrates and operation sound occurs during sudden acceleration and cornering, when VDC

function, TCS function or brake limited slip differential (BLSD) function is operated. This is not a malfunction
because it is caused by VDC function, TCS function or brake limited slip differential (BLSD) function that is
operated normally.

• VDC warning lamp may turn ON and VDC function, TCS function and brake limited slip differential (BLSD)

function may not normally operate, when driving on a special road the is extremely slanted (bank in a circuit
course). This is not a malfunction if the status returns to normal for VDC function, TCS function and brake
limited slip differential (BLSD) function after the engine is started again. In this case, perform self-diagnosis,
check self-diagnosis results, and erase memory.

• A malfunction in yaw rate/side/decel G sensor system may be detected when the vehicle sharply turns dur-

ing a spin turn, acceleration turn or drift driving while VDC function, TCS function and brake limited slip dif-
ferential (BLSD) function are OFF (VDC OFF switch is pressed and VDC OFF indicator lamp is in ON
status). This is not a malfunction if the status returns to normal for VDC function, TCS function and brake
limited slip differential (BLSD) function after the engine is started again. In this case, perform self-diagnosis,
check self-diagnosis results, and erase memory.

Precaution for Harness Repair

INFOID:0000000007576784

• Solder the repair part, and wrap it with tape. [Twisted wire fray

must be 110 mm (4.33 in) or less.]

• Never bypass the repair point with wire. (If it is bypassed, the turn-

out point cannot be separated and the twisted wire characteristics
are lost.)

SKIB8766E

SKIB8767E

Revision: 2011 October

2012 JUKE

PREPARATION

BRC-7

< PREPARATION >

[WITH VDC]

BRC

PREPARATION

Commercial Service Tool

INFOID:0000000007576785

Tool name

Description

Power tool

Loosening bolts and nuts

PBIC0190E

Revision: 2011 October

2012 JUKE

BRC-8

< SYSTEM DESCRIPTION >

[WITH VDC]

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000007576786

2WD

ECM
Refer to

EC-16, "ENGINE CON-

TROL SYSTEM :
Component Parts Location"

TCM

Refer to

TM-69, "CVT CONTROL

SYSTEM : Component Parts Loca-
tion"

Yaw rate/side/decel G sensor

ABS actuator and electric unit (con-
trol unit)

Front wheel sensor

Stop lamp switch

Brake pedal position switch

Steering angle sensor

Rear wheel sensor

Under floor carpet (front seat right
side)

Inside engine room

Steering knuckle

JSFIA0643ZZ

Revision: 2011 October

2012 JUKE

COMPONENT PARTS

BRC-9

< SYSTEM DESCRIPTION >

[WITH VDC]

BRC

*: Models with CVT

AWD

Brake pedal

ABS warning lamp, brake warning
lamp, VDC warning lamp, VDC OFF
indicator lamp (in combination
meter)

Back of spiral cable assembly

Rear wheel hub and bearing assem-
bly

ECM
Refer to

EC-16, "ENGINE CON-

TROL SYSTEM :
Component Parts Location"

TCM
Refer to

TM-69, "CVT CONTROL

SYSTEM : Component Parts Loca-
tion"

AWD control module
Refer to

DLN-10, "Component Parts

Location"

Yaw rate/side/decel G sensor

ABS actuator and electric unit (con-
trol unit)

Front wheel sensor

Stop lamp switch

Brake pedal position switch

Steering angle sensor

10. Rear wheel sensor

JSFIA0644ZZ

Revision: 2011 October

2012 JUKE

BRC-10

< SYSTEM DESCRIPTION >

[WITH VDC]

COMPONENT PARTS

Component Description

INFOID:0000000007576787

*1: Models with CVT
*2: AWD models

Wheel Sensor and Sensor Rotor

INFOID:0000000007576788

NOTE:
• Wheel sensor of front wheel is installed on steering knuckle.
• Sensor rotor of front wheel is integrated in wheel hub and bearing assembly.
• Wheel sensor of rear wheel is installed on wheel hub and bearing assembly. (2WD)
• Wheel sensor of rear wheel is installed on axle housing. (AWD)
• Sensor rotor of rear wheel is integrated in wheel hub and bearing assembly. (2WD)
• Sensor rotor of rear wheel is integrated on drive shaft. (AWD)
• Never measure resistance and voltage value using a tester because sensor is active sensor.

Under floor carpet (front seat right
side)

Inside engine room

Steering knuckle

Brake pedal

ABS warning lamp, brake warning
lamp, VDC warning lamp, VDC OFF
indicator lamp (in combination
meter)

Back of spiral cable assembly

Rear axle housing

Component

Reference/Function

ABS actuator and electric unit (control unit)

BRC-11, "ABS Actuator and Electric Unit (Control Unit)"

Wheel sensor

BRC-10, "Wheel Sensor and Sensor Rotor"

Stop lamp switch

BRC-12, "Stop Lamp Switch"

Brake pedal position switch

BRC-12, "Brake Pedal Position Switch"

Steering angle sensor

BRC-12, "Steering Angle Sensor"

Yaw rate/side/decel G sensor

BRC-12, "Yaw Rate/Side/Decel G Sensor"

VDC OFF switch

BRC-12, "VDC OFF Switch"

Brake fluid level switch

BRC-12, "Brake Fluid Level Switch"

Parking brake switch

BRC-12, "Parking Brake Switch"

VDC warning lamp

BRC-13, "System Description"

ABS warning lamp

Brake warning lamp

VDC OFF indicator lamp

ECM

Mainly transmits the following signals to ABS actuator and elec-
tric unit (control unit) via CAN communication.
• Accelerator pedal position signal
• Engine speed signal
Mainly receives the following signals from ABS actuator and
electric unit (control unit) via CAN communication.
• Target throttle position signal

TCM

Mainly transmits the following signals to ABS actuator and elec-
tric unit (control unit) via CAN communication.
• N range signal
• P range signal
• R range signal
• Current gear position signal

AWD control module

Mainly transmits the following signals to ABS actuator and elec-
tric unit (control unit) via CAN communication.
• Current AWD mode signal

Revision: 2011 October

2012 JUKE

COMPONENT PARTS

BRC-11

< SYSTEM DESCRIPTION >

[WITH VDC]

BRC

• Downsize and weight reduction is aimed. IC for detection portion

and magnet for sensor rotor are adopted.

• Power supply is supplied to detection portion so that magnetic field

line is read. Magnetic field that is detected is converted to current
signal.

• When sensor rotor rotates, magnetic field changes. Magnetic field

change is converted to current signals (rectangular wave) and is
transmitted to ABS actuator and electric unit (control unit). Change
of magnetic field is proportional to wheel speed.

ABS Actuator and Electric Unit (Control Unit)

INFOID:0000000007576789

Electric unit (control unit) is integrated with actuator and comprehensively controls VDC function, TCS func-
tion, ABS function, EBD function and brake limited slip differential (BLSD) function.

ELECTRIC UNIT (CONTROL UNIT)

• Brake fluid pressure, engine and transaxle are controlled according to signals from each sensor.
• If malfunction is detected, the system enters fail-safe mode.

ACTUATOR

The following components are integrated with ABS actuator.

Pump

Returns the brake fluid reserved in reservoir to master cylinder by reducing pressure.

Motor

Activates the pump according to signals from ABS actuator and electric unit (control unit).

Motor Relay

Operates the motor ON/OFF according to signals from ABS actuator and electric unit (control unit).

Actuator Relay (Main Relay)

Operates each valve ON/OFF according to signals from ABS actuator and electric unit (control unit).

ABS IN Valve

Switches the fluid pressure line to increase or hold according to signals from control unit.
NOTE:
Valve is a solenoid valve.

ABS OUT Valve

Switches the fluid pressure line to increase, hold or decrease according to signals from control unit.
NOTE:
Valve is a solenoid valve.

Cut Valve 1, Cut Valve2

Shuts off the ordinary brake line from master cylinder, when VDC function, TCS function and brake limited slip
differential (BLSD) function are activated.

Suction Valve 1, Suction Valve 2

Supplies the brake fluid from master cylinder to the pump, when VDC function, TCS function and brake limited
slip differential (BLSD) function are activated.

Inlet Valve

Brake fluid sucked from the reservoir by the pump does not backflow.
NOTE:
Valve is a check valve.

Outlet Valve

Brake fluid discharged from the pump does not backflow.
NOTE:
Valve is a check valve.

Return Check Valve

Returns the brake fluid from brake caliper to master cylinder by bypassing orifice of each valve when brake is
released.

JPFIC0131GB

Revision: 2011 October

2012 JUKE

BRC-12

< SYSTEM DESCRIPTION >

[WITH VDC]

COMPONENT PARTS

Reservoir

Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreases when
decreasing pressure of brake caliper.

Stop Lamp Switch

INFOID:0000000007576790

Detects the operation status of brake pedal and transmits converted electric signal to ABS actuator and elec-
tric unit (control unit).

Brake Pedal Position Switch

INFOID:0000000007576791

Detects the operation status of brake pedal and transmits converted electric signal to ABS actuator and elec-
tric unit (control unit).

Steering Angle Sensor

INFOID:0000000007576792

Detects the following information and transmits steering angle signal to ABS actuator and electric unit (control
unit) via CAN communication.
• Steering wheel rotation amount
• Steering wheel rotation angular velocity
• Steering wheel rotation direction

Yaw Rate/Side/Decel G Sensor

INFOID:0000000007576793

Calculates the following information that affects the vehicle, and transmits a signal to ABS actuator and elec-
tric unit (control unit) via communication lines.
• Vehicle rotation angular velocity (yaw rate signal)
• Vehicle lateral acceleration (side G signal) and longitudinal acceleration (decel G signal)

VDC OFF Switch

INFOID:0000000007576794

• This is an integrated switch with switches for other functions.
• Non-operational status or standby status of the following functions can be selected using VDC OFF switch.

VDC OFF indicator lamp indicates the operation status of function. (ON: Non-operational status, OFF:
Standby status)

- VDC function

NOTE:
Brake limited slip differential (BLSD) function control operates.

- TCS function
• VDC OFF indicator lamp turns OFF (standby status) when the engine is started again after it is stopped once

while VDC OFF indicator lamp is ON (non-operational status).

Brake Fluid Level Switch

INFOID:0000000007576795

Detects the brake fluid level in reservoir tank and transmits converted electric signal from combination meter to
ABS actuator and electric unit (control unit) via CAN communication, when brake fluid level is the specified
level or less.

Parking Brake Switch

INFOID:0000000007576796

Detects the operation status of parking brake switch and transmits converted electric signal from combination
meter to ABS actuator and electric unit (control unit).

Revision: 2011 October

2012 JUKE

SYSTEM

BRC-13

< SYSTEM DESCRIPTION >

[WITH VDC]

BRC

SYSTEM

System Description

INFOID:0000000007576797

• The system switches fluid pressure of each brake caliper to increase, to hold or to decrease according to

signals from control unit in ABS actuator and electric unit (control unit). This control system is applied to
VDC function, TCS function, ABS function, EBD function and brake limited slip differential (BLSD) function.

• Fail-safe function is available for each function and is activated by each function when system malfunction

occurs.

SYSTEM DIAGRAM

NOTE:
• TCM is CVT models only.
• AWD control module is AWD models only.

INPUT SIGNAL AND OUTPUT SIGNAL

Major signal transmission between each unit via communication lines is shown in the following table.

JSFIA0645GB

Revision: 2011 October

2012 JUKE

BRC-14

< SYSTEM DESCRIPTION >

[WITH VDC]

SYSTEM

VDC function, TCS function, ABS function, EBD function, Brake limited slip differential (BLSD) function

*1: Communication line between yaw rate/side/decel G sensor and ABS actuator and electric unit (control unit)
*2: Models with CVT
*3: AWD models

VALVE OPERATION [VDC FUNCTION, TCS FUNCTION AND BRAKE LIMITED SLIP DIFFEREN-
TIAL (BLSD) FUNCTION

The control unit built in the ABS actuator and electric unit (control unit) controls fluid pressure of the brake cal-
ipers, respectively, by operating each valve.

When VDC Function, TSC Function and Brake Limited Slip Differential (BLSD) Function is in Operation (During Pres-

Component

Signal description

Steering angle sensor

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication.
• Steering angle sensor signal

Yaw rate/side/decel G sensor

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via com-

munication line

• Yaw rate signal
• Side G sensor signal
• Decel G sensor signal

ECM

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication.
• Accelerator pedal position signal
• Engine speed signal
Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN
communication.
• Target throttle position signal

TCM

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication.
• N range signal
• P range signal
• R range signal
• Current gear position signal

AWD control module

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication.
• Current AWD mode signal

Combination meter

Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN
communication.
• Brake fluid level switch signal
• ABS warning lamp signal
• Brake warning lamp signal
• VDC warning lamp signal
• VDC OFF indicator lamp signal

Revision: 2011 October

2012 JUKE

SYSTEM

BRC-15

< SYSTEM DESCRIPTION >

[WITH VDC]

BRC

sure Increases)

During pressure front RH brake caliper increases

• Brake fluid is conveyed to the pump from the master cylinder through suction valve 2 and is pressurized by

the pump operation. The pressurized brake fluid is supplied to the front RH brake caliper through the ABS IN
valve. For the left caliper, brake fluid pressure is maintained because the pressurization is unnecessary. The
pressurization for the left caliper is controlled separately from the right caliper.

During pressure front LH brake caliper increases

• Brake fluid is conveyed to the pump from the master cylinder through suction valve 1 and is pressurized by

the pump operation. The pressurized brake fluid is supplied to the front LH brake caliper through the ABS IN
valve. For the right caliper, brake fluid pressure is maintained because the pressurization is unnecessary.
The pressurization for the right caliper is controlled separately from the left caliper.

During pressure rear RH brake caliper increases

• Brake fluid is conveyed to the pump from the master cylinder through suction valve 1 and is pressurized by

the pump operation. The pressurized brake fluid is supplied to the rear RH brake caliper through the ABS IN
valve. For the left caliper, brake fluid pressure is maintained because the pressurization is unnecessary. The
pressurization for the left caliper is controlled separately from the right caliper.

During pressure rear LH brake caliper increases

• Brake fluid is conveyed to the pump from the master cylinder through suction valve 2 and is pressurized by

the pump operation. The pressurized brake fluid is supplied to the rear LH brake caliper through the ABS IN

JSFIA0646GB

Name

Not activated

During pressure increases

Cut valve 1

Power supply is not supplied (open)

Power supply is supplied (close)

Cut valve 2

Power supply is not supplied (open)

Power supply is supplied (close)

Suction valve 1

Power supply is not supplied (close)

Power supply is supplied (open)

Suction valve 2

Power supply is not supplied (close)

Power supply is supplied (open)

ABS IN valve

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure increases

Revision: 2011 October

2012 JUKE

BRC-16

< SYSTEM DESCRIPTION >

[WITH VDC]

SYSTEM

valve. For the right caliper, brake fluid pressure is maintained because the pressurization is unnecessary.
The pressurization for the right caliper is controlled separately from the left caliper.

When VDC Function, TSC Function and Brake Limited Slip Differential (BLSD) Function is Starts Operating (During
Pressure Holds)

During pressure front RH brake caliper holds

• Since the cut valve 2 and the suction valve 2 are closed, the front RH brake caliper, master cylinder, and res-

ervoir are blocked. This maintains fluid pressure applied on the front RH brake caliper. The pressurization for
the left caliper is controlled separately from the right caliper.

During pressure front LH brake caliper holds

• Since the cut valve 1 and the suction valve 1 are closed, the front LH brake caliper, master cylinder, and res-

ervoir are blocked. This maintains fluid pressure applied on the front LH brake caliper. The pressurization for
the right caliper is controlled separately from the left caliper.

During pressure rear RH brake caliper holds

• Since the cut valve 1 and the suction valve 1 are closed, the rear RH brake caliper, master cylinder, and res-

ervoir are blocked. This maintains fluid pressure applied on the rear RH brake caliper. The pressurization for
the left caliper is controlled separately from the right caliper.

During pressure rear LH brake caliper holds

JSFIA0647GB

Name

Not activated

During pressure holds

Cut valve 1

Power supply is not supplied (open)

Power supply is supplied (close)

Cut valve 2

Power supply is not supplied (open)

Power supply is supplied (close)

Suction valve 1

Power supply is not supplied (close)

Suction valve 2

Power supply is not supplied (close)

ABS IN valve

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure holds

Revision: 2011 October

2012 JUKE

SYSTEM

BRC-17

< SYSTEM DESCRIPTION >

[WITH VDC]

BRC

• Since the cut valve 2 and the suction valve 2 are closed, the rear LH brake caliper, master cylinder, and res-

ervoir are blocked. This maintains fluid pressure applied on the rear LH brake caliper. The pressurization for
the right caliper is controlled separately from the left caliper.

When VDC Function, TSC Function and Brake Limited Slip Differential (BLSD) Function is in Operation (During Pres-
sure Decreases)

During pressure front RH brake caliper decreases

• Since the suction valve 2 and the ABS OUT valve close and the cut valve 2 and the ABS IN valve open, the

fluid pressure applied on the front RH brake caliper is reduced by supplying the fluid pressure to the master
cylinder via the ABS IN valve and the cut valve 2. The pressurization for the right caliper is controlled sepa-
rately from the left caliper.

During pressure front LH brake caliper decreases

• Since the suction valve 1 and the ABS OUT valve close and the cut valve 1 and the ABS IN valve open, the

fluid pressure applied on the front LH brake caliper is reduced by supplying the fluid pressure to the master
cylinder via the ABS IN valve and the cut valve 2. The pressurization for the left caliper is controlled sepa-
rately from the right caliper.

During pressure rear RH brake caliper decreases

• Since the suction valve 1 and the ABS OUT valve close and the cut valve 1 and the ABS IN valve open, the

fluid pressure applied on the rear RH brake caliper is reduced by supplying the fluid pressure to the master
cylinder via the ABS IN valve and the cut valve 2. The pressurization for the right caliper is controlled sepa-
rately from the left caliper.

JSFIA0648GB

Name

Not activated

During pressure decreases

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Suction valve 1

Power supply is not supplied (close)

Suction valve 2

Power supply is not supplied (close)

ABS IN valve

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure decreases

Revision: 2011 October

2012 JUKE

BRC-18

< SYSTEM DESCRIPTION >

[WITH VDC]

SYSTEM

During pressure rear LH brake caliper decreases

• Since the suction valve 2 and the ABS OUT valve close and the cut valve 2 and the ABS IN valve open, the

fluid pressure applied on the rear LH brake caliper is reduced by supplying the fluid pressure to the master
cylinder via the ABS IN valve and the cut valve 2. The pressurization for the left caliper is controlled sepa-
rately from the right caliper.

Component Parts and Function

VALVE OPERATION (ABS FUNCTION AND EBD FUNCTION)

The control unit built in the ABS actuator and electric unit (control unit) controls fluid pressure of the brake cal-
ipers, respectively, by operating each valve.

When Brake Pedal is Applied or ABS Function is in Operation (During Pressure Increases)

Component

Function

Pump

Returns the brake fluid reserved in reservoir to master cylinder by reducing pressure.

Motor

Activates the pump according to signals from ABS actuator and electric unit (control unit).

Cut valve 1
Cut valve 2

Shuts off the ordinary brake line from master cylinder.

Suction valve 1
Suction valve 2

Supplies the brake fluid from master cylinder to the pump.

ABS IN valve

Switches the fluid pressure line to increase or hold according to signals from control unit.

ABS OUT valve

Switches the fluid pressure line to increase, hold or decrease according to signals from control unit.

Inlet valve

Brake fluid sucked from the reservoir by the pump does not backflow.

Outlet valve

Brake fluid discharged from the pump does not backflow.

Return check valve

Returns the brake fluid from brake caliper and wheel cylinder to master cylinder by bypassing orifice
of each valve when brake is released.

Reservoir

Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreas-
es when decreasing pressure of brake caliper and wheel cylinder.

JSFIA0649GB

Name

Not activated

During pressure increases

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Revision: 2011 October

2012 JUKE

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