Nissan Qashqai J11. Manual - part 948

 

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Nissan Qashqai J11. Manual - part 948

 

 

SYSTEM

BRC-29

< SYSTEM DESCRIPTION >

[WITH ESP]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

• Self-diagnosis is performed immediately after when engine starts and when vehicle initially is driven [by vehi-

cle speed approx. 15 km/h (9 MPH)]. Motor sounds are generated during self-diagnosis. In addition, brake
pedal may be felt heavy when depressing brake pedal lightly. These symptoms are not malfunctions.

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

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

EBD FUNCTION

EBD FUNCTION : System Description

INFOID:0000000010329793

• By preventing rear wheel slip increase through rear wheel brake force (brake fluid pressure) control that is

electronically controlled when slight skip on front and rear wheels are detected during braking, stability dur-
ing braking is improved.

ALFIA0421GB

Component

Signal description

Combination meter

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

Steering angle sensor

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

BRC-30

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

• EBD function is expanded and developed from conventional ABS function and corrects rear wheel brake

force to appropriate level by electronic control according to load weight (number of passengers).

• During braking, control unit portion compares slight slip on front

and rear wheels by wheel speed sensor signal, transmits drive sig-
nal to actuator portion when rear wheel slip exceeds front wheel
slip for the specified value or more, and controls rear wheel brake
force (brake fluid pressure) so that increase of rear wheel slip is
prevented and slips on front wheel and rear wheel are nearly
equalized. ABS control is applied when slip on each wheel
increases and wheel speed is the threshold value of ABS control or
less.

• CONSULT can be used to diagnose the system diagnosis.
• Fail-safe function is adopted. When a malfunction occurs in EBD

function, the control is suspended for ESP/VDC function, TCS
function, ABS function, EBD function, Brake limited slip differential
(BLSD) function, Brake assist function, hill start assist function and
Brake force distribution function. The vehicle status becomes the
same as models without ESP/VDC function, TCS function, ABS
function, EBD function, Brake limited slip differential (BLSD) func-
tion, Brake assist function, hill start assist function and Brake force
distribution function. Refer to 

BRC-21, "Fail-Safe"

.

JPFIC0142GB

JPFIC0143GB

SYSTEM

BRC-31

< SYSTEM DESCRIPTION >

[WITH ESP]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

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

BRAKE LIMITED SLIP DIFFERENTIAL (BLSD) FUNCTION

BRAKE LIMITED SLIP DIFFERENTIAL (BLSD) FUNCTION : System Description

INFOID:0000000010329794

• LH and RH driving wheel spin is always monitored. If necessary, appropriate brake force is independently

applied to LH or RH driving wheel so that one-sided wheel spin is avoided and traction is maintained. Mainly
starting ability is improved.

• Brake limited slip differential (BLSD) function operates while ESP/VDC function is in non-operational status

(OFF) by ESP/VDC OFF switch.

• VDC warning lamp blinking while Brake limited slip differential (BLSD) function is in operation and indicates

to the driver that the function is in operation.

• Slight vibrations are felt on the Brake pedal and the operation noises occur, when Brake limited slip differen-

tial (BLSD) function operates. This is not a malfunction because it is caused by Brake limited slip differential
(BLSD) function that is normally operated.

• Fail-safe function is adopted. When a malfunction occurs in brake limited slip differential (BLSD) function,

the control is suspended for ESP/VDC function, TCS function, Brake limited slip differential (BLSD) function,
Brake assist function, hill start assist function and Brake force distribution function. The vehicle status
becomes the same as models without ESP/VDC function, TCS function, Brake limited slip differential
(BLSD) function, Brake assist function, hill start assist function and Brake force distribution function. How-
ever, ABS function and EBD function are operated normally. Refer to 

BRC-21, "Fail-Safe"

.

JPFIC0144GB

Component

Signal description

Combination meter

Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN 
communication.
• ESP/VDC warning lamp signal
• ABS warning lamp signal
• Brake warning lamp signal

BRC-32

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

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

BRAKE ASSIST FUNCTION

ALFIA0420GB

Component

Signal description

ECM

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

TCM

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

Chassis control module

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

Combination meter

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

Steering angle sensor

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

 

 

 

 

 

 

 

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