Nissan Leaf. Instruction — part 309
BRC-26
< SYSTEM DESCRIPTION >
[WITH VDC]
SYSTEM
Fail-safe
INFOID:0000000010120031
VDC FUNCTION, TCS FUNCTION, BRAKE LIMITED SLIP DIFFERENTIAL (BLSD) FUNCTION,
BRAKE ASSIST FUNCTION
VDC warning lamp in combination meter turn ON when a malfunction occurs in system [ABS actuator and
electric unit (control unit)]. The control is suspended for VDC function, TCS function, brake limited slip differen-
tial (BLSD) function and brake assist function. The vehicle status becomes the same as models without VDC
function, TCS function, brake limited slip differential (BLSD) function and brake assist function. However, ABS
function and EBD function are operated normally.
ABS FUNCTION
ABS warning lamp and VDC warning lamp in combination meter turn ON when a malfunction occurs in system
[ABS actuator and electric unit (control unit)]. The control is suspended for VDC function, TCS function, ABS
function, brake limited slip differential (BLSD) function and brake assist function. The vehicle status becomes
the same as models without VDC function, TCS function, ABS function, brake limited slip differential (BLSD)
function and brake assist function. However, EBD function is operated normally.
NOTE:
ABS self-diagnosis sound may be heard the same as in the normal condition, because self-diagnosis is per-
formed when power switch turns ON and when vehicle initially starts.
EBD FUNCTION
ABS warning lamp, brake warning lamp and VDC warning lamp in combination meter turn ON when a mal-
function occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC
function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function and brake
assist function. The vehicle status becomes the same as models without VDC function, TCS function, ABS
function, EBD function, brake limited slip differential (BLSD) function and brake assist function.
Several seconds after power switch is turned ON (when the system
is in normal operation)
OFF
When VDC OFF switch is ON (VDC function and TCS function are
OFF)
ON
Condition (status)
VDC OFF indicator lamp
DTC
Vehicle condition
C1101
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function (only when both 2 rear wheels are malfunctioning)
• Brake limited slip differential (BLSD) function
• Brake assist function
C1102
C1103
C1104
C1105
C1106
C1107
C1108
C1109
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1110
C1111
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• Brake limited slip differential (BLSD) function
• Brake assist function
SYSTEM
BRC-27
< SYSTEM DESCRIPTION >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1113
The following functions are suspended:
• VDC function
• TCS function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1115
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1116
The following functions are suspended:
• VDC function
• TCS function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1120
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1121
C1122
C1123
C1124
C1125
C1126
C1127
C1140
C1142
The following functions are suspended:
• VDC function
• TCS function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1143
C1144
C1145
C1146
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1155
C1164
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
C1165
C1166
C1167
C1176
The following functions are suspended:
• VDC function
• TCS function
• Brake limited slip differential (BLSD) function
• Brake assist function
C118A
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
DTC
Vehicle condition
BRC-28
< SYSTEM DESCRIPTION >
[WITH VDC]
SYSTEM
VDC FUNCTION
VDC FUNCTION : System Description
INFOID:0000000010120032
• Side slip or tail slip may occur while driving on a slippery road or intending an urgent evasive driving. VDC
function detects side slip status using each sensor when side slip or tail slip is about to occur and improves
vehicle stability by brake control and motor torque control during driving.
• In addition to ABS function, EBD function and TCS function, target side slip amount is calculated according
to steering operation amount from steering angle sensor. By comparing this information with vehicle side slip
amount that is calculated from information from yaw rate/side/decel G sensor and wheel sensor, vehicle driv-
ing conditions (conditions of understeer or oversteer) are judged and vehicle stability is improved by brake
force control on all 4 wheels and motor torque control.
• VDC function can be switched to non-operational status (OFF) by operating VDC OFF switch. In this case,
VDC OFF indicator lamp turns ON.
• Control unit portion automatically improves driving stability by performing brake force control as well as
motor torque control, by transmitting drive signal to actuator portion according to difference between target
side slip amount and vehicle side slip amount
• VDC warning lamp blinks while VDC function is in operation and indicates to the driver that the function is in
operation.
• CONSULT can be used to diagnose the system diagnosis.
• Fail-safe function is adopted. When a malfunction occurs in VDC function, the control is suspended for VDC
function, TCS function, brake limited slip differential (BLSD) function and brake assist function. The vehicle
status becomes the same as models without VDC function, TCS function, brake limited slip differential
(BLSD) function and brake assist function. However, ABS function and EBD function are operated normally.
.
NOTE:
VDC has the characteristic as described here, This is not the device that helps reckless driving.
C118C
The following functions are suspended:
• VDC function
• TCS function
• Brake limited slip differential (BLSD) function
• Brake assist function
U1000
U1010
U110D
The following functions are suspended:
• VDC function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
DTC
Vehicle condition
JSFIA0894GB
SYSTEM
BRC-29
< SYSTEM DESCRIPTION >
[WITH VDC]
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.
JSFIA2065GB
Component
Signal description
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
VCM
Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication:
• Accelerator pedal position signal
• VCM control signal
• Shift position signal
Electrically-driven intelligent brake
Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication line
*2
:
• Electrically-driven intelligent brake control signal
• Brake warning lamp request signal
• Brake system warning lamp request signal
Steering angle sensor
Mainly transmits the following signal to ABS actuator and electric unit (control unit) via CAN
communication:
• Steering angle sensor signal
Combination meter
Mainly transmits the following signals to 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
• VDC warning lamp signal
• Brake warning lamp signal
• Brake system warning lamp signal
• VDC OFF indicator lamp signal
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