Nissan Qashqai J11. Manual - part 978

COMPONENT PARTS

BRC-149

< SYSTEM DESCRIPTION >

[FORWARD EMERGENCY BRAKING]

C

D

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H

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A

B

BRC

N

O

P

Sonar buzzer

A buzzer sounds a according to operation signal from the sonar control 
unit.

Steering angle sensor

Steering angle sensor related signal is transmitted to distance sensor 
via CAN communication.

Sonar control unit

• While Forward Emergency Braking is operating, when the system 

wants to recommend an operation to the driver, and when the sys-
tem is canceled, a buzzer sounds due to a sonar output request from 
the distance sensor. 

• Refer  to 

SN-58, "Component Parts Location"

 for detailed installation 

location.

No.

Component parts

Function

BRC-150

< SYSTEM DESCRIPTION >

[FORWARD EMERGENCY BRAKING]

SYSTEM

SYSTEM

System Description

INFOID:0000000010501238

SYSTEM DIAGRAM

INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

JMOIA0066GB

Transmit unit

Signal name

Description

ECM

CAN com-
munica-
tion

Idle switch signal

Receives idle position state (ON/OFF)

Accelerator pedal position signal

Receives accelerator pedal position (angle)

Engine speed signal

Receives engine speed

TCM

CAN com-
munica-
tion

Input speed signal

Receives the number of revolutions of input shaft

Current gear position signal

Receives a current gear position

Shift position signal

Receives a selector lever position

Output shaft revolution signal

Receives the number of revolutions of output shaft

BCM

CAN com-
munica-
tion

Stop lamp switch signal

Receives an operational state of the brake pedal

SYSTEM

BRC-151

< SYSTEM DESCRIPTION >

[FORWARD EMERGENCY BRAKING]

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Output Signal Item

DESCRIPTION

• Forward emergency braking (FEB) system can assist the driver when there is a risk of a forward collision

with the vehicle ahead in the traveling lane.

• FEB system operate at speeds above approximately 5 km/h (3 MPH).

FUNCTION DESCRIPTION

• The FEB system uses a distance sensor to measure the distance to the vehicle ahead in the traveling lane.
• If there is a risk of a collision, FEB issues a visual and audible warning signal to the combination meter via

CAN communication.

• If the driver does not take action, FEB issues the second visual and audible warning.
• And if the risk of a collision becomes imminent, FEB system applies braking command to ABS actuator and

electric unit (control unit) via CAN communication.

Operating Condition

• FEB is ON
• Vehicle speed: Approximately 5 km/h (3 MPH) and above

CAUTION:

It is the driver

′

s responsibility to stay alert, drive safely and be in control of the vehicle at all times. As

there is a performance limit, it may not provide a warning or brake in certain conditions.

ABS actuator 
and electric unit 
(control unit)

CAN com-
munica-
tion

ABS malfunction signal

Receives a malfunction state of ABS

ABS operation signal

Receives an operational state of ABS

ABS warning lamp signal

Receives an ON/OFF state of ABS warning lamp

TCS malfunction signal

Receives a malfunction state of TCS

TCS operation signal

Receives an operational state of TCS

VDC OFF switch signal

Receives an ON/OFF state of VDC

VDC malfunction signal

Receives a malfunction state of VDC

VDC operation signal

Receives an operational state of VDC

Vehicle speed signal (ABS)

Receives wheel speeds of four wheels

Yaw rate signal

Receives yaw rate acting on the vehicle

Steering angle 
sensor

CAN com-
munica-
tion

Steering angle sensor malfunction signal

Receives a malfunction state of steering angle sensor

Steering angle sensor signal

Receives the number of revolutions, turning direction of 
the steering wheel

Steering angle speed signal

Receives the turning angle speed of the steering wheel

Chassis control 
module

CAN com-
munica-
tion

Chassis control module signal

Receives an operation state of the chassis control mod-
ule

Transmit unit

Signal name

Description

Reception unit

Signal name

Description

ABS actuator 
and electric 
unit (control 
unit)

CAN commu-
nication

Chassis control module state signal

Transmits a brake fluid pressure control signal to acti-
vates the brake via chassis control module

Combination 
meter

CAN commu-
nication

Meter display 
signal

Vehicle ahead detection 
indicator signal

Transmits a signal to display a state of the system on the 
information display

FEB system display sig-
nal

FEB warning signal

BRC-152

< SYSTEM DESCRIPTION >

[FORWARD EMERGENCY BRAKING]

OPERATION

OPERATION

Switch Name and Function

INFOID:0000000010501241

Menu Displayed by Pressing Each Switch

INFOID:0000000010501242

SYSTEM DISPLAY

DISPLAY AND WARNING

Warning Operation

JMOIA0075GB

No.

Switch name

Description

FEB setting display
(Combination meter setting display)

The setting of FEB system can be switched between ON and OFF

JMOIA0076GB

No.

Switch name

Description

FEB warning lamp

• FEB warning lamp indicates that an abnormal condition is present in FEB system
• When the FEB system turns OFF, the FEB warning lamp will illuminate.

FEB ON indicator
(Warning systems indicator)

Indicates that FEB systems are ON

FEB display “Forward”
(Speaker icon)

Indicates that FEB system is ON

FEB warning

Displays immediately before the harder brake operates