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
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
.
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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