Juke F15 (2012 year). Service Repair Manual — part 34

COMPONENT PARTS

BRC-101

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

4WD

JSFIA0550ZZ

ECM
Refer to

EC-25, "ENGINE CON-

TROL SYSTEM :
Component Parts Location"

TCM
Refer to

TM-131, "CVT CONTROL

SYSTEM : Component Parts Loca-
tion"

4WD control module
Refer to

DLN-10, "Component Parts

Location"

Yaw rate/side/decel G sensor

Steering angle sensor

Stop lamp switch

Brake switch/brake pedal position
switch

Front wheel sensor

ABS actuator and electric unit (con-
trol unit)

10. Rear wheel sensor

Under floor carpet (front seat right
side)

Back of spiral cable assembly

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

Brake pedal

Steering knuckle

Inside engine room

Rear axle housing

BRC-102

< SYSTEM DESCRIPTION >

[WITH ESP]

COMPONENT PARTS

Component Description

INFOID:0000000006601866

*1: Models with LHD (MR16DDT and HR16DE)
*2: Models with CVT
*3: 4WD models

Wheel Sensor and Sensor Rotor

INFOID:0000000006601867

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. (4WD)
• Sensor rotor of rear wheel is integrated in wheel hub and bearing assembly. (2WD)
• Sensor rotor of rear wheel is integrated on drive shaft. (4WD)
• Never measure resistance and voltage value using a tester because sensor is active sensor.

Component

Reference/Function

ABS actuator and electric unit (control unit)

BRC-103, "ABS Actuator and Electric Unit (Control Unit)"

Wheel sensor

BRC-102, "Wheel Sensor and Sensor Rotor"

ESP pressure sensor

BRC-104, "ESP pressure Sensor"

Stop lamp switch

BRC-104, "Stop Lamp Switch"

Brake switch/brake pedal position switch

BRC-104, "Brake Switch/Brake Pedal Position Switch"

Steering angle sensor

BRC-104, "Steering Angle Sensor"

Yaw rate/side/decel G sensor

BRC-104, "Yaw Rate/Side/Decel G Sensor"

ESP OFF switch

BRC-104, "ESP OFF Switch"

Brake fluid level switch

BRC-104, "Brake Fluid Level Switch"

Parking brake switch

BRC-104, "Parking Brake Switch"

ESP warning lamp

BRC-105, "System Description"

ABS warning lamp

Brake warning lamp

ESP 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

4WD control module

Mainly transmits the following signals to ABS actuator and elec-
tric unit (control unit) via CAN communication.
• Current 4WD mode signal

COMPONENT PARTS

BRC-103

< SYSTEM DESCRIPTION >

[WITH ESP]

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:0000000006601868

Electric unit (control unit) is integrated with actuator and comprehensively controls ESP 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 ESP 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 ESP 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

BRC-104

< SYSTEM DESCRIPTION >

[WITH ESP]

COMPONENT PARTS

Reservoir

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

ESP pressure Sensor

INFOID:0000000006385694

Detects the brake fluid pressure and transmits signal to ABS actuator and electric unit (control unit).

Stop Lamp Switch

INFOID:0000000006601869

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

Brake Switch/Brake Pedal Position Switch

INFOID:0000000006605577

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:0000000006385691

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:0000000006385692

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)

ESP OFF Switch

INFOID:0000000006385696

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

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

- ESP function

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

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

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

Brake Fluid Level Switch

INFOID:0000000006385693

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:0000000006385695

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

SYSTEM

BRC-105

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

SYSTEM

System Description

INFOID:0000000006601870

• 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 ESP
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:
• ESP pressure sensor is LHD models (MR16DDT and HR16DE) only.
• TCM is CVT models only.
• 4WD control module is 4WD models only.

INPUT SIGNAL AND OUTPUT SIGNAL

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

JSFIA0527GB

BRC-106

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

ESP 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: 4WD models

VALVE OPERATION [ESP 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 ESP Function, TSC Function and Brake Limited Slip Differential (BLSD) Function is in Operation (During Pres-
sure Increases)

NOTE:

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

4WD control module

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication.
• Current 4WD 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
• ESP warning lamp signal
• ESP OFF indicator lamp signal

SYSTEM

BRC-107

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

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

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

JSFIA0531GB

BRC-108

< SYSTEM DESCRIPTION >

[WITH ESP]

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

NOTE:
ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

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

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

JSFIA0532GB

SYSTEM

BRC-109

< SYSTEM DESCRIPTION >

[WITH ESP]

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

NOTE:
ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

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

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

JSFIA0533GB

BRC-110

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

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 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)

NOTE:

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.

ESP pressure sensor

Detects the brake fluid pressure and transmits signal to ABS actuator and electric unit (control unit).

SYSTEM

BRC-111

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

During pressure front RH brake caliper increases

• When the cut valve 2 and the ABS IN valve opens, brake fluid is supplied to the front RH brake caliper from

the master cylinder through the ABS IN valve. Brake fluid does not flow into the reservoir because the ABS
OUT valve is closed.

During pressure front LH brake caliper increases

• When the cut valve 1 and the ABS IN valve opens, brake fluid is supplied to the front LH brake caliper from

the master cylinder through the ABS IN valve. Brake fluid does not flow into the reservoir because the ABS
OUT valve is closed.

During pressure rear RH brake caliper increases

• When the cut valve 1 and the ABS IN valve opens, brake fluid is supplied to the rear RH brake caliper from

the master cylinder through the ABS IN valve. Brake fluid does not flow into the reservoir because the ABS
OUT valve is closed.

During pressure rear LH brake caliper increases

• When the cut valve 2 and the ABS IN valve opens, brake fluid is supplied to the rear LH brake caliper from

the master cylinder through the ABS IN valve. Brake fluid does not flow into the reservoir because the ABS
OUT valve is closed.

When ABS Function is Starts Operating (During Pressure Holds)

NOTE:

Name

Not activated

During pressure increases

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 increases

JSFIA0534GB

BRC-112

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

During pressure front RH brake caliper holds

• Since the ABS IN valve and the ABS OUT valve are closed, the front RH brake caliper, master cylinder, and

reservoir are blocked. This maintains fluid pressure applied on the front RH brake caliper.

During pressure front LH brake caliper holds

• Since the ABS IN valve and the ABS OUT valve are closed, the front LH brake caliper, master cylinder, and

reservoir are blocked. This maintains fluid pressure applied on the front LH brake caliper.

During pressure rear RH brake caliper holds

• Since the ABS IN valve and the ABS OUT valve are closed, the rear RH brake caliper, master cylinder, and

reservoir are blocked. This maintains fluid pressure applied on the rear RH brake caliper.

During pressure rear LH brake caliper holds

• Since the ABS IN valve and the ABS OUT valve are closed, the rear LH brake caliper, master cylinder, and

reservoir are blocked. This maintains fluid pressure applied on the rear LH brake caliper.

When ABS Function is in Operation (During Pressure Decreases)

NOTE:

Name

Not activated

During pressure holds

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)

Power supply is supplied (close)

ABS OUT valve

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure holds

JSFIA0535GB

SYSTEM

BRC-113

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

During pressure front RH brake caliper decreases

• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the front RH

brake caliper is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.

During pressure front LH brake caliper decreases

• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the front LH

brake caliper is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.

During pressure rear RH brake caliper decreases

• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the rear RH

brake caliper is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.

During pressure rear LH brake caliper decreases

• Since the ABS IN valve is closed and the ABS OUT valve is opened, fluid pressure applied on the rear LH

brake caliper is supplied to the reservoir through the ABS OUT valve. This fluid pressure decreases when
sent to the master cylinder by the pump.

When ABS Function is in Operation (During Pressure Increases)

NOTE:

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)

Power supply is supplied (close)

ABS OUT valve

Power supply is not supplied (close)

Power supply is supplied (open)

Each brake caliper (fluid pressure)

—

Pressure decreases

JSFIA0536GB

BRC-114

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

During pressure front RH brake caliper increases

• Brake fluid is supplied to the front RH brake caliper from the master cylinder through the cut valve 2 and the

ABS IN valve. Since the suction valve 2 and the ABS OUT valve is closed, the fluid does not flow into the
reservoir. The amount of brake fluid supplied to the front RH brake caliper from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).

During pressure front LH brake caliper increases

• Brake fluid is supplied to the front LH brake caliper from the master cylinder through the cut valve 1 and the

ABS IN valve. Since the suction valve 1 and the ABS OUT valve is closed, the fluid does not flow into the
reservoir. The amount of brake fluid supplied to the front LH brake caliper from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).

During pressure rear RH brake caliper increases

• Brake fluid is supplied to the rear RH brake caliper from the master cylinder through the cut valve 1 and the

ABS IN valve. Since the suction valve 1 and the ABS OUT valve is closed, the fluid does not flow into the
reservoir. The amount of brake fluid supplied to the rear RH brake caliper from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).

During pressure rear LH brake caliper increases

• Brake fluid is supplied to the rear LH brake caliper from the master cylinder through the cut valve 2 and the

ABS IN valve. Since the suction valve 2 and the ABS OUT valve is closed, the fluid does not flow into the

Name

Not activated

During pressure increases

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 increases

JSFIA0534GB

SYSTEM

BRC-115

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

reservoir. The amount of brake fluid supplied to the rear LH brake caliper from the master cylinder is con-
trolled according to time that the ABS IN valve is not energized (time that the ABS IN valve is open).

When Brake Release

NOTE:
ESP pressure sensor is applied to models with LHD (MR16DDT and HR16DE).

During front RH brake caliper release

• Brake fluid is supplied to the front RH brake caliper through the return check valve of the ABS IN valve and

the cut valve 2, and returns to the master cylinder.

During front LH brake caliper release

• Brake fluid is supplied to the front LH brake caliper through the return check valve of the ABS IN valve and

the cut valve 1, and returns to the master cylinder.

During rear RH brake caliper release

• Brake fluid is supplied to the rear RH brake caliper through the return check valve of the ABS IN valve and

the cut valve 1, and returns to the master cylinder.

During rear LH brake caliper release

• Brake fluid is supplied to the rear LH brake caliper through the return check valve of the ABS IN valve and

the cut valve 2, and returns to the master cylinder.

Component Parts and Function

Name

Not activated

During brake release

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

JSFIA0537GB

- 1

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

CONDITION FOR TURN ON THE WARNING LAMP

Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.

CONDITION FOR TURN ON THE INDICATOR LAMP

• Turns ON when ESP function and TCS function are switched to non-operational status (OFF) by ESP OFF

switch.

• Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.

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.

ESP pressure sensor

Detects the brake fluid pressure and transmits signal to ABS actuator and electric unit (control unit).

Condition (status)

ABS warning lamp

Brake warning lamp

ESP warning lamp

Ignition switch OFF

OFF

For approx. 1 seconds after the ignition switch is turned ON

Approx. 1 seconds after ignition switch is turned ON (when the sys-
tem is in normal operation)

OFF

After engine starts

OFF

When parking brake operates (parking brake switch ON)

OFF

When brake fluid is less than the specified level (brake fluid level
switch ON)

OFF

ESP function is malfunctioning

OFF

TCS function is malfunctioning

OFF

ABS function is malfunctioning

OFF

EBD function is malfunctioning

Brake limited slip differential (BLSD) function is malfunctioning

OFF

ESP function is operating

OFF

Blinking

TCS function is operating

OFF

Blinking

Condition (status)

ESP indicator lamp

Ignition switch OFF

OFF

For approx. 1 seconds after the ignition switch is turned ON

Approx. 1 seconds after ignition switch is turned ON (when the sys-
tem is in normal operation)

OFF

When ESP OFF switch is ON (ESP function and TCS function are
OFF)

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Juke F15 (2012 year). Service Repair Manual — part 34

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