Nissan Qashqai J11. Manual — part 949
SYSTEM
BRC-33
< SYSTEM DESCRIPTION >
[WITH ESP]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
BRAKE ASSIST FUNCTION : System Description
INFOID:0000000010329795
• When the driver brakes hard in an emergency, the stopping distance is reduced by increasing brake fluid
pressure.
• Fail-safe function is adopted. When a malfunction occurs in Brake assist 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 func-
tion, hill start assist function and Brake force distribution function. However, ABS function and EBD function
are operated normally. Refer to
SYSTEM DIAGRAM
INPUT SIGNAL AND OUTPUT SIGNAL
Major signal transmission between each unit via communication lines is shown in the following table.
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
BRC-34
< SYSTEM DESCRIPTION >
[WITH ESP]
SYSTEM
hill start assist FUNCTION
hill start assist FUNCTION : System Description
INFOID:0000000010329798
• This function maintains brake fluid pressure so that the vehicle does not move backwards even if brake
pedal is released to depress accelerator pedal to start the vehicle while it is stopped on an uphill slope by
depressing brake pedal.
• This function operates when the vehicle is in stop status on a uphill slope of slope ratio 5% or more and
selector lever is in the position other than P or N.
• hill start assist function is only for the start aid. It maintains the brake fluid pressure for approx. 2 seconds
after releasing the brake pedal, and then decreases the pressure gradually. If the vehicle can start by the
accelerator operation, the brake is released automatically and a smooth start can be performed.
• Fail-safe function is adopted. When a malfunction occurs in hill start assist 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 func-
tion, hill start assist function and Brake force distribution function. However, ABS function and EBD function
are operated normally. Refer to
.
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
Component
Signal description
SYSTEM
BRC-35
< 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 FORCE DISTRIBUTION FUNCTION
E1FIA0167GB
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
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
BCM
Transmits the following signals to the ABS via CAN.
• Stop lamp switch
USM
Transmits the following signals to the ABS via CAN.
• Neutral position switch
• Reverse position switch
BRC-36
< SYSTEM DESCRIPTION >
[WITH ESP]
SYSTEM
BRAKE FORCE DISTRIBUTION FUNCTION : System Description
INFOID:0000000010329799
• Brake force distribution function is controlled by ABS actuator and electric unit (control unit).
• Brake force distribution function helps provide a more stable and
secure feeling.
• During cornering, when brake operation is performed brake fluid
pressure of each wheel is controlled based on steering operation
amount by the driver and vehicle cornering status amount detected
by each sensor.
• Fail-safe function is adopted. When a malfunction occurs in Brake
force distribution function, the control is suspended for VDC func-
tion, TCS function, Brake limited slip differential (BLSD) function,
Brake assist function, hill start assist function and Brake force dis-
tribution function. The vehicle status becomes the same as models
without ESP/VDC function, TCS function, Brake limited slip differ-
ential (BLSD) function, Brake assist function, hill start assist func-
tion and Brake force distribution function. However, ABS function
and EBD function are operated normally. Refer to
NOTE:
Brake force distribution function may not always be operates in all driving conditions.
SYSTEM DIAGRAM
INPUT SIGNAL AND OUTPUT SIGNAL
Major signal transmission between each unit via communication lines is shown in the following table.
JPFIC0171GB
JPFIC0172GB
ALFIA0420GB
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