Infiniti QX56 (Z62). Manual - part 295

DAS

COMPONENT PARTS

DAS-217

< SYSTEM DESCRIPTION >

[FCW]

C

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Warning systems ON indicator
(In the warning systems switch)

Turns warning systems ON indicator ON/OFF according to the signals from the ADAS control 
unit
Warning systems ON indicator turns on, according to an warning systems ON indicator signal.

Combination meter

Performs the following operations using the signals received from the ADAS control unit via 
the CAN communication
• Blinks the vehicle ahead detection indicator according to a meter display signal
• Illuminates the IBA OFF indicator lamp using the IBA OFF indicator lamp signal
• Operates the buzzer (ICC warning chime) using the buzzer output signal

Component

Description

DAS-218

< SYSTEM DESCRIPTION >

[FCW]

SYSTEM

SYSTEM

System Description

INFOID:0000000006223673

SYSTEM DIAGRAM

ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

Output Signal Item

DESCRIPTION

• The Forward Collision Warning (FCW) system will warn the driver by a warning lamp (vehicle ahead detec-

tion indicator) and chime when own vehicle is getting close to the vehicle ahead in the traveling lane.

JSOIA0279GB

Transmit unit

Signal name

Description

ABS actuator 
and electric unit 
(control unit)

CAN com-
munica-
tion

Vehicle speed signal (ABS)

Receives wheel speeds of four wheels

ICC sensor

ITS com-
munica-
tion

ICC sensor signal

Receives detection results, such as the presence or ab-
sence of a leading vehicle and distance from the vehicle

Warning sys-
tems switch

Warning systems switch signal 

Receives an ON/OFF state of the warning systems 
switch

Reception unit

Signal name

Description

Combination 
meter

CAN commu-
nication

Meter display 
signal

Vehicle ahead detec-
tion indicator signal

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

IBA OFF indicator lamp signal

• Transmits a signal to turn ON the IBA OFF indicator 

lamp

• Transmits an ON/OFF state of the intelligent brake 

assist

Buzzer output signal

Transmits a buzzer output signal to activate the buzz-
er

ICC sensor

ITS commu-
nication

Vehicle speed signal

Transmits a vehicle speed calculated by the ADAS 
control unit

Warning sys-
tems ON indi-
cator

Warning systems ON indicator signal

Turns ON the warning systems ON indicator

DAS

SYSTEM

DAS-219

< SYSTEM DESCRIPTION >

[FCW]

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• The FCW system will function when own vehicle is driven at speeds of approximately 15 km/h (10 MPH) and

above.

NOTE:
The FCW system shares the diagnosis function with ICC system.

FUNCTION DESCRIPTION

The distance from the vehicle ahead and a relative speed are calculated by using the ICC sensor and an ICC
sensor signal is transmitted to the ADAS control unit via ITS communication. When judging the necessity of
warning according to the received vehicle ahead detection signal, the ADAS control unit transmits a buzzer
output signal and meter display signal to the combination meter via CAN communication.

FCW Operating Condition

• Warning systems ON indicator: ON
• Vehicle speed: Approximately 15 km/h (10 MPH) and above.

Fail-safe Indication 

FCW INITIAL STATE CHANGE

CAUTION:

Never change FCW initial state “ON” 

⇒

 “OFF” without the consent of the customer. 

FCW initial state can be changed.
• FCW initial ON* - FCW function is automatically turned ON, when the ignition switch OFF 

⇒

 ON. 

• FCW initial OFF - FCW function is still OFF when the ignition switch OFF 

⇒

 ON.

*: Factory setting

How to change FCW/LDW/BSW initial state

1.

Turn ignition switch ON.

2.

Warning systems switch is OFF.

3.

Push and hold warning systems switch for more than 4 seconds.

4.

Buzzer sounds and blinking of the warning systems ON indicator informs that the FCW/LDW/BSW initial
state change is completed.

Fail-safe (ADAS Control Unit)

INFOID:0000000006223674

If a malfunction occurs in each system, ADAS control unit cancels each control, sounds a beep, and turns ON
the warning lamp or indicator lamp.

Vehicle condition

Indication on the combination meter

• When the FCW system malfunctions
• When the sensor window is dirty
• When driving into a strong light (i.e. sunlight)
NOTE:
Check that the IBA system is not OFF. The indicator lamp is shared 
with IBA system.

JPOIA0179ZZ

System

Buzzer

Warning lamp/Indicator lamp

Description

Vehicle-to-vehicle distance control mode

High-pitched 
tone

ICC system warning lamp

Cancel

Conventional (fixed speed) cruise control mode

High-pitched 
tone

ICC system warning lamp

Cancel

Intelligent Brake Assist (IBA)

High-pitched 
tone

IBA OFF indicator lamp

Cancel

Forward Collision Warning (FCW)

High-pitched 
tone

IBA OFF indicator lamp

Cancel

Distance Control Assist (DCA)

High-pitched 
tone

ICC system warning lamp

Cancel

Lane Departure Warning (LDW)

—

Lane departure warning lamp

Cancel

DAS-220

< SYSTEM DESCRIPTION >

[FCW]

SYSTEM

Fail-safe (ICC Sensor)

INFOID:0000000006223675

If a malfunction occurs in the ICC sensor, ADAS control unit cancels control, sounds a beep, and turns ON the
ICC system warning lamp in the combination meter.

Lane Departure Prevention (LDP)

Low-pitched 
tone

Lane departure warning lamp

Cancel

Blind Spot Warning (BSW)

—

BSW warning lamp

Cancel

System

Buzzer

Warning lamp/Indicator lamp

Description