Nissan Juke F15. Instruction — part 105

COMPONENT PARTS

BRC-11

< SYSTEM DESCRIPTION >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Component Description

INFOID:0000000012199652

*1: Models with CVT

*2: AWD models

Wheel Sensor and Sensor Rotor

INFOID:0000000012199653

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.

A.

Under floor carpet (front seat right
side)

B.

Inside engine room

C.

Steering knuckle

D.

Brake pedal

E.

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

F.

Back of spiral cable assembly

G.

Rear axle housing

Component

Reference/Function

ABS actuator and electric unit (control unit)

BRC-12, "ABS Actuator and Electric Unit (Control Unit)"

Wheel sensor

BRC-11, "Wheel Sensor and Sensor Rotor"

Stop lamp switch

BRC-13, "Stop Lamp Switch"

Brake pedal position switch

BRC-13, "Brake Pedal Position Switch"

Steering angle sensor

BRC-13, "Steering Angle Sensor"

Yaw rate/side/decel G sensor

BRC-13, "Yaw Rate/Side/Decel G Sensor"

VDC OFF switch

BRC-13, "VDC OFF Switch"

Brake fluid level switch

BRC-13, "Brake Fluid Level Switch"

Parking brake switch

BRC-13, "Parking Brake Switch"

VDC warning lamp

BRC-14, "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

*1

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

*2

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

BRC-12

< SYSTEM DESCRIPTION >

[WITH VDC]

COMPONENT PARTS

• 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:0000000012199654

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

COMPONENT PARTS

BRC-13

< SYSTEM DESCRIPTION >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

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:0000000012199655

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:0000000012199656

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:0000000012199657

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:0000000012199658

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:0000000012199659

• 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:0000000012199660

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:0000000012199661

Detects the operation status of parking brake switch and transmits converted electric signal from combination

meter to ABS actuator and electric unit (control unit).

BRC-14

< SYSTEM DESCRIPTION >

[WITH VDC]

SYSTEM

SYSTEM

System Description

INFOID:0000000012199662

• 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