Nissan Juke F15. Manual - part 106

SYSTEM

BRC-15

< SYSTEM DESCRIPTION >

[WITH VDC]

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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

*1

• 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

*2

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

*3

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

Combination meter

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

BRC-16

< SYSTEM DESCRIPTION >

[WITH VDC]

SYSTEM

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)

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure increases

SYSTEM

BRC-17

< SYSTEM DESCRIPTION >

[WITH VDC]

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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)

Power supply is not supplied (close)

Suction valve 2

Power supply is not supplied (close)

Power supply is not supplied (close)

ABS IN valve

Power supply is not supplied (open)

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure holds

BRC-18

< SYSTEM DESCRIPTION >

[WITH VDC]

SYSTEM

• 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)

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

Power supply is not supplied (open)

Suction valve 1

Power supply is not supplied (close)

Power supply is not supplied (close)

Suction valve 2

Power supply is not supplied (close)

Power supply is not supplied (close)

ABS IN valve

Power supply is not supplied (open)

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Power supply is not supplied (close)

Each brake caliper (fluid pressure)

—

Pressure decreases