Infiniti QX56 (Z62). Manual - part 310

DAS

SYSTEM

DAS-277

< SYSTEM DESCRIPTION >

[LDW & LDP]

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SYSTEM

LANE DEPARTURE WARNING (LDW) SYSTEM

LANE DEPARTURE WARNING (LDW) SYSTEM : System Description

INFOID:0000000006223704

SYSTEM DIAGRAM

ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

Output Signal Item

FUNCTION DESCRIPTION

• Lane Departure Warning (LDW) system provides a lane departure warning function when the vehicle is

driven at speeds of approximately 70 km/h (45 MPH) or more.

JSOIA0285GB

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

BCM

CAN com-
munica-
tion

Turn indicator signal

Receives an operational state of the turn signal lamp 
and the hazard lamp

Lane camera 
unit

ITS com-
munica-
tion

Detected lane condition signal

Receives detection results of lane marker

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

Lane departure warning lamp signal

Transmits a lane departure warning lamp signal to 
turn ON the lane departure warning lamp

Lane camera 
unit

ITS commu-
nication

Vehicle speed signal

Transmits a vehicle speed calculated by the ADAS 
control unit

Turn indicator signal

Transmits a turn indicator signal received from BCM

Warning buzz-
er

Warning buzzer signal

Activates the warning buzzer

Warning sys-
tems ON indi-
cator

Warning systems ON indicator signal

Turns ON the warning systems ON indicator

DAS-278

< SYSTEM DESCRIPTION >

[LDW & LDP]

SYSTEM

• When the vehicle approaches either the left or the right side of the traveling lane, a warning will sound and

the lane departure warning lamp (yellow) on the combination meter will blink to alert the driver.

• The warning does not occur during turn signal operation (Lane change side).
• The warning function will stop when the vehicle returns inside of the lane markers.

EXAMPLE

When the vehicle approaches the right lane marker, the driver is alerted by the buzzer and the blinking of lane
departure warning lamp (yellow). 

OPERATION DESCRIPTION

• When the system is turned ON by operating the warning systems switch, ADAS control unit turns ON the

warning systems ON indicator.

• Lane camera unit monitors lane markers of the traveling lane. It transmits the detected lane condition signal

to ADAS control unit via ITS communication.

• When judging from a lane marker detection signal that the vehicle is approaching the lane marker, the ADAS

control unit controls the following item to alert the driver.

- Activates warning buzzer
- ADAS control unit transmits a lane departure warning lamp signal to combination meter via CAN communi-

cation and turns ON/OFF the lane departure warning lamp (yellow).

OPERATING CONDITION

• Warning systems ON indicator: ON
• Vehicle speed: approximately 70 km/h (45 MPH) or more
• Turn indicator signal: After 2 seconds or more from turned OFF
NOTE:
• After the operating conditions of warning are satisfied, the warning continues until the vehicle speed reaches

approximately 60 km/h (40 MPH)

• LDP ON indicator lamp is OFF
• The LDW system may not function properly, depending on the situation. Refer to 

DAS-288, "Precautions for

Lane Departure Warning/Lane Departure Prevention"

Bulb Check Action and Fail-safe Indication

JPOIA0014GB

Vehicle condition/ Driver's operation

Warning sys-

tems ON indi-

cator

Indication on the combination meter

Ignition switch
OFF 

⇒

 ON

(Bulb check)

Approx. 5 sec. 

ON

*

JPOIA0017GB

DAS

SYSTEM

DAS-279

< SYSTEM DESCRIPTION >

[LDW & LDP]

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NOTE:
*: If LDW initial state is ON, warning systems ON indicator continues turned ON.

LDW INITIAL STATE CHANGE

CAUTION:

Never change LDW initial state “ON” 

⇒

 “OFF” without the consent of the customer. 

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

⇒

 ON. 

• LDW initial OFF - LDW 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.

LANE DEPARTURE WARNING (LDW) SYSTEM : Fail-safe (ADAS Control Unit)

INFOID:0000000006223705

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.

When DTC is detected
(Except “C1B01” and “C1B03”)

ON

Camera aiming is not completed
(“C1B01”is detected)
NOTE:
This is detected while driving the vehicle and the indication 
remains ON until the ignition switch is turned OFF

ON

Temporary disabled status at high temperature
(“C1B03”is detected)

ON

Vehicle condition/ Driver's operation

Warning sys-

tems ON indi-

cator

Indication on the combination meter

JPOIA0019GB

JPOIA0020GB

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

Lane Departure Prevention (LDP)

Low-pitched 
tone

Lane departure warning lamp

Cancel

Blind Spot Warning (BSW)

—

BSW warning lamp

Cancel

DAS-280

< SYSTEM DESCRIPTION >

[LDW & LDP]

SYSTEM

LANE DEPARTURE WARNING (LDW) SYSTEM : Fail-safe (Lane Camera Unit)

INFOID:0000000006223706

FAIL-SAFE CONTROL BY DTC

If a malfunction occurs in the lane camera unit, ADAS control unit cancels control, and turns ON the lane
departure warning lamp in the combination meter.

TEMPORARY DISABLED STATUS AT HIGH TEMPERATURE

• If the vehicle is parked in direct sunlight under high temperature conditions, the system may be deactivated

automatically. And the lane departure warning lamp (yellow) in the combination meter will blinks.

• When interior temperature is reduced, the system will resume operation automatically and the lane depar-

ture warning lamp (yellow) in the combination meter will stop blinking.

LANE DEPARTURE PREVENTION (LDP) SYSTEM

LANE DEPARTURE PREVENTION (LDP) SYSTEM : System Description

INFOID:0000000006223707

SYSTEM DIAGRAM

ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

JSOIA0286GB

Transmit unit

Signal name

Description

ECM

CAN com-
munica-
tion

Accelerator pedal position signal

Receives accelerator pedal position (angle)

ICC steering switch 
signal

Dynamic driver as-
sistance switch sig-
nal

Receives the operational state of the ICC steering 
switch

Engine speed signal

Receives engine speed

Snow mode signal

Receives an operational state of the snow mode