Qashqai J11. Brake control system

SYSTEM

BRC-17

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

VALVE OPERATION (OTHER THAN ABS AND EBD)

Each valve is operated and fluid pressure of brake caliper is controlled.
NOTE:
There is no operation to hold and increase pressure for functions other than ABS and EBD.

When Pressure Increases

Component

FUNCTION

Reservoir

Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreas-
es when decreasing pressure of brake caliper.

Pump

Returns the brake fluid reserved in reservoir to master cylinder by reducing pressure.

Motor

Drives the pump according to signals from control unit.

ABS IN valve

Switches the fluid pressure line to increase or hold according to signals from control unit.

ABS OUT valve

Switches the fluid pressure line to increase, hold or decrease according to signals from control unit.

Return check valve

Returns the brake fluid from brake caliper to master cylinder by bypassing orifice of each valve when
brake is released.

Cut valve 1
Cut valve 2

Performs the duty control of fluid pressure increased by pump according to signals from control unit.

Pressure Sensor

Detects the brake pedal operation amount.

JPFIC0162GB

BRC-18

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

When front RH wheel caliper pressure increases

• Motor is activated. Brake fluid from pump is supplied to front RH wheel caliper through ABS IN valve. For

other wheel, ABS IN valve is closed and brakes fluid is not supplied to caliper.

When front LH wheel caliper pressure increases

• Motor is activated. Brake fluid from pump is supplied to front LH wheel caliper through ABS IN valve. For

other wheel, ABS IN valve is closed and brakes fluid is not supplied to caliper.

When rear RH wheel caliper pressure increases

• Motor is activated. Brake fluid from pump is supplied to rear RH wheel caliper through ABS IN valve. For

other wheel, ABS IN valve is closed and brakes fluid is not supplied to caliper.

When rear LH wheel caliper pressure increases

• Motor is activated. Brake fluid from pump is supplied to rear LH wheel caliper through ABS IN valve. For

other wheel, ABS IN valve is closed and brakes fluid is not supplied to caliper.

Name

Not activated

When Pressure Increases

Cut valve 1

Power supply is not supplied (open)

Wheel other than the one that the pressure
is to be increased: Power supply is not sup-

plied (open)

Only wheel that the pressure is to be in-

creased: Power supply is supplied (close)

Cut valve 2

Power supply is not supplied (open)

Wheel other than the one that the pressure
is to be increased: Power supply is not sup-

plied (open)

Only wheel that the pressure is to be in-

creased: Power supply is supplied (close)

ABS IN valve

Power supply is not supplied (open)

Only wheel that the pressure is to be in-

creased: Power supply is not supplied

(open)

Wheel other than the one that the pressure
is to be increased: Power supply is supplied

(close)

ABS OUT valve

Power supply is not supplied (close)

Each caliper (fluid pressure)

—

Pressure increases

SYSTEM

BRC-19

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

Released

When front RH wheel caliper pressure decreases

• Being returned to master cylinder through ABS IN valve, fluid pressure of brake caliper is decreased.

When front LH wheel caliper pressure decreases

• Being returned to master cylinder through ABS IN valve, fluid pressure of brake caliper is decreased.

When rear RH wheel caliper pressure decreases

• Being returned to master cylinder through ABS IN valve, fluid pressure of brake caliper is decreased.

When rear LH wheel caliper pressure decreases

• Being returned to master cylinder through ABS IN valve, fluid pressure of brake caliper is decreased.

Component Parts and Function

JPFIC0163GB

Name

Not activated

When pressure decreases

Cut valve 1

Power supply is not supplied (open)

Cut valve 2

Power supply is not supplied (open)

ABS IN valve

Power supply is not supplied (open)

ABS OUT valve

Power supply is not supplied (close)

Power supply is supplied (open)

Each caliper (fluid pressure)

—

Pressure decreases

Component

Function

Reservoir

Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreas-
es when decreasing pressure of brake caliper.

Pump

Returns the brake fluid reserved in reservoir to master cylinder by reducing pressure.

Motor

Drives the pump according to signals from control unit.

ABS IN valve

Switches the fluid pressure line to increase or hold according to signals from control unit.

BRC-20

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

CONDITION FOR TURN ON THE WARNING LAMP

Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.

CONDITION FOR TURN ON THE INDICATOR LAMP

VDC OFF indicator lamp

• Turns ON when VDC function and TCS function are switched to non-operational status (OFF) by VDC OFF

switch.

• Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.

ABS OUT valve

Switches the fluid pressure line to increase, hold or decrease according to signals from control unit.

Return check valve

Returns the brake fluid from brake caliper to master cylinder by bypassing orifice of each valve when
brake is released.

Cut valve 1
Cut valve 2

Performs the duty control of fluid pressure increased by pump according to signals from control unit.

Pressure Sensor

Detects the brake pedal operation amount.

Component

Function

Condition (status)

ABS warning lamp

Brake warning lamp

VDC warning lamp

Ignition switch OFF.

OFF

For approx. 1 seconds after the ignition switch is turned ON

Approx. 1 seconds after ignition switch is turned ON (when the
system is in normal operation).

OFF

After engine starts

OFF

When brake fluid is less than the specified level (brake fluid level
switch ON)

OFF

When parking brake operates (parking brake switch ON)

OFF

VDC function is malfunctioning

OFF

TCS function is malfunctioning

OFF

ABS function is malfunctioning

OFF

EBD function is malfunctioning

Brake limited slip differential (BLSD) function is malfunctioning

OFF

Brake assist function is malfunctioning

OFF

hill start assist function is malfunctioning

OFF

Brake force distribution function is malfunctioning

OFF

When brake booster vacuum decreases

OFF

When vacuum sensor is malfunctioning

OFF

VDC function is operating

OFF

Blinking

TCS function is operating

OFF

Blinking

ABS function is operating

OFF

EBD function is operating

OFF

Brake limited slip differential (BLSD) function is operating

OFF

Blinking

Brake assist function is operating

OFF

hill start assist function is operating

OFF

Condition (status)

VDC OFF indicator lamp

Ignition switch OFF.

OFF

For approx. 1 seconds after the ignition switch is turned ON.

SYSTEM

BRC-21

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

Fail-Safe

INFOID:0000000010329789

VDC FUNCTION, TCS FUNCTION, BRAKE LIMITED SLIP DIFFERENTIAL FUNCTION, BRAKE AS-
SIST FUNCTION, hill start assist FUNCTION AND BRAKE FORCE DISTRIBUTION FUNCTION

ESP 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 ESP function, TCS function, Brake limited slip differen-
tial (BLSD) function, Brake assist function, hill start assist function and Brake force distribution function. The
vehicle status becomes the same as models without ESP function, TCS function, Brake limited slip differential
(BLSD) function, Brake assist function, hill start assist function and Brake force distribution function. However,
ABS function and EBD function are operated normally.

ABS FUNCTION

ABS warning lamp and ESP 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 ESP function, TCS function, ABS
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 function, TCS
function, ABS function, Brake limited slip differential (BLSD) function, Brake assist function, hill start assist
function and Brake force distribution 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 ignition switch turns ON and when vehicle initially starts.

EBD FUNCTION

ABS warning lamp, brake warning lamp and ESP 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 ESP
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 function, TCS function, ABS function, EBD function, Brake limited slip differen-
tial (BLSD) function, Brake assist function, hill start assist function and Brake force distribution function.

Approx. 1 seconds after ignition switch is turned ON (when the
system is in normal operation).

OFF

When VDC OFF switch is ON (VDC function, TCS function and
Active trace control function are OFF).

Condition (status)

VDC OFF indicator lamp

DTC

Fail-safe condition

C1101

The following functions are suspended.
• ESP function
• TCS function
• ABS function
• EBD function (only when both 2 rear wheels are malfunctioning)
• Brake limited slip differential (BLSD) function
• Brake assist function
• Hill start assist function
• Brake force distribution function
• Active trace control function (control of chassis control module)

C1102

C1103

C1104

C1105

C1106

C1107

C1108

C1109

The following functions are suspended.
• ESP function
• TCS function
• ABS function
• EBD function
• Brake limited slip differential (BLSD) function
• Brake assist function
• Hill start assist function
• Brake force distribution function
• Active trace control function (control of chassis control module)

C1111

BRC-22

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

C1113

C1115

The following functions are suspended.
• ESP function
• TCS function
• ABS function
• Brake limited slip differential (BLSD) function
• Brake assist function
• Hill start assist function
• Brake force distribution function
• Active trace control function (control of chassis control module)

C1120

C1121

C1122

C1123

C1124

C1125

C1126

C1127

C1130

The following functions are suspended.
• ESP function
• TCS function
• Brake limited slip differential (BLSD) function
• Hill start assist function
• Brake force distribution function
• Active trace control function (control of chassis control module)

C1138

C1140

C1142

The following functions are suspended.
• ESP function
• TCS function
• Brake limited slip differential (BLSD) function
• Brake assist function
• Hill start assist function
• Brake force distribution function
• Active trace control function (control of chassis control module)

C1143

C1144

DTC

Fail-safe condition

SYSTEM

BRC-23

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

VDC FUNCTION

C1145

C1146

C1155

C1160

C1164

C1165

C1170

C1197

Electrical vacuum assistance of brake booster is suspended.

C1198

C1199

—

C119A

Electrical vacuum assistance of brake booster is suspended.

U1000

DTC

Fail-safe condition

BRC-24

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

VDC FUNCTION : System Description

INFOID:0000000010329790

• Side slip or tail slip may occur while driving on a slippery road or intending an urgent evasive driving. ESP/

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 engine output 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 and brake operation amount from brake pressure
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 driving conditions (conditions of understeer or over-
steer) are judged and vehicle stability is improved by brake force control on all 4 wheels and engine output
control.

• ESP/VDC function can be switched to non-operational status (OFF) by operating ESP/VDC OFF switch. In

this case, ESP/VDC OFF indicator lamp turns ON.

• Control unit portion automatically improves driving stability by performing brake force control as well as

engine output control, by transmitting drive signal to actuator portion according to difference between target
side slip amount and vehicle side slip amount

• ESP/VDC warning lamp blinks while ESP/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 ESP/VDC 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

BRC-21, "Fail-Safe"

JPFIC0133GB

SYSTEM

BRC-25

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

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

OPERATION CHARACTERISTICS

VDC Function That Prevents Oversteer Tendency

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 warning lamp signal
• ESP 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-26

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

• During a cornering, brake force (brake fluid pressure) is applied on front wheel and rear wheel on the outer

side of turn. Momentum directing towards the outer side of turn is generated. Oversteer is prevented.

• Changing driving lane on a slippery road, when oversteer tendency is judged large, engine output is con-

trolled as well as brake force (brake fluid pressure) of 4 wheels. Oversteer tendency decreases.

ESP/VDC Function That Prevents Understeer Tendency

• During a cornering, brake force (brake fluid pressure) is applied on front wheel and rear wheel on the inner

side of turn. Momentum directing towards the inner side of turn is generated. Understeer is prevented.

• Applying braking during a cornering on a slippery road, when understeer tendency is judged large, engine

output is controlled as well as brake force (brake fluid pressure) of four wheels. Understeer tendency
decreases.

TCS FUNCTION

ALFIA0339GB

ALFIA0340GB

JPFIC0137GB

ALFIA0341GB

SYSTEM

BRC-27

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

TCS FUNCTION : System Description

INFOID:0000000010329791

• Wheel spin status of drive wheel is detected by wheel sensor of 4

wheels. Engine output and transmission shift status is controlled
so that slip rate of drive wheels is in appropriate level. When wheel
spin occurs on drive wheel, ABS actuator and electric unit (control
unit) perform brake force control of LH and RH drive wheels (apply
brake force by increasing brake fluid pressure of drive wheel) and
decrease engine torque by engine torque control. Wheel spin
amount decreases. Engine torque is controlled to appropriate
level.

• TCS function can be switched to non-operational status (OFF) by

operating ESP/VDC OFF switch. In this case, ESP/VDC OFF indi-
cator lamp turns ON.

• ESP/VDC warning lamp blinks while TCS 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 TCS

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 However, ABS function and EBD
function are operated normally. Refer to

BRC-21, "Fail-Safe"

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

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

JPFIC0139GB

ALFIA0420GB

BRC-28

< SYSTEM DESCRIPTION >

[WITH ESP]

SYSTEM

ABS FUNCTION

ABS FUNCTION : System Description

INFOID:0000000010329792

• By preventing wheel lock through brake force (brake fluid pressure) control that is electronically controlled by

detecting wheel speed during braking, stability during emergency braking is improved so that obstacles can
be easily bypassed by steering operation.

• During braking, control units calculates wheel speed and pseudo-vehicle speed, and transmits pressure

increase, hold or decrease signals to actuator portion according to wheel slip status.

• The following effects are obtained by preventing wheel lock during

braking.

- Vehicle tail slip is prevented during braking when driving straight.
- Understeer and oversteer tendencies are moderated during brak-

ing driving on a corner.

- Obstacles may be easily bypassed by steering operation during

braking.

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

function, the control is suspended for VDC function, TCS function,
ABS 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
VDC function, TCS function, ABS function, Brake limited slip differ-
ential (BLSD) function, Brake assist function, hill start assist func-
tion and Brake force distribution function. However, EBD function
is operated normally. Refer to

BRC-21, "Fail-Safe"

NOTE:
• ABS has the characteristic as described here, This is not the

device that helps reckless driving.

• To stop vehicle efficiently, ABS does not operate and ordinary

brake operates at low speed [approx. 10 km/h (6 MPH) or less, but
differs subject to road conditions).

Component

Signal description

ECM

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

JPFIC0140GB

SYSTEM

BRC-29

< SYSTEM DESCRIPTION >

[WITH ESP]

BRC

• 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]

BRC

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

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

Qashqai J11. Brake control system - part 2