Infiniti QX56 (Z62). Manual — part 186

CCS

COMPONENT PARTS

CCS-11

< SYSTEM DESCRIPTION >

[ICC]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

NOTE:
Only IBA system uses

Combination meter

×

×

×

×

Performs the following operations using the signals received from
the ADAS control unit via the CAN communication
• Displays the ICC system operation status using the meter dis-

play signal

• Illuminates the ICC system warning lamp using the ICC warning

lamp signal

• Illuminates the IBA OFF indicator lamp using the IBA OFF indi-

cator lamp signal

• Operates the buzzer (ICC warning chime) using the buzzer out-

put signal

ICC steering switch

×

×

• ICC steering switch allows the ON/OFF of the Intelligent Cruise

Control and the settings of a vehicle speed and distance be-
tween vehicles

• ICC steering switch signal is transmitted to ECM. ECM transmits

the signal to the ADAS control unit via CAN communication

ICC brake switch

×

×

×

×

• ICC brake switch is turned OFF and stop lamp switch is turned

ON, when depressing the brake pedal

• ICC brake switch signal is input to ECM. These signals are

transmitted from ECM to ADAS control unit via CAN communi-
cation

• Stop lamp switch signal is input to ECM and ABS actuator and

electric unit (control unit). These signals are transmitted from
ECM and ABS actuator and electric unit (control unit) to ADAS
control unit via CAN communication

Stop lamp switch

×

×

×

×

ICC brake hold relay

×

×

ICC brake hold relay activates the stop lamp by ICC brake hold re-
lay drive signal (stop lamp drive signal) outputted by the ADAS
control unit

Transfer control unit

×

×

×

×

Transfer control unit transmits a mode selection state of 4WD shift
switch to the ADAS control unit via CAN communication

IBA OFF switch

×

Note

IBA OFF switch signal is input to the ADAS control unit

Steering angle sensor

×

Measures the rotation amount, rotation speed, and rotation direc-
tion of steering wheel, and then transmits them to ADAS control
unit via CAN communication

Component

Function

Description

V

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-v

eh

ic

le

di

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a

n

c

e

co

nt

ro

l m

o

d

e

Co

nve

n

ti

on

al

(f

ix

ed

sp

ee

d) cru

is

e

c

o

n

tro

l

m

o

d

e

Int

e

lligent Brake Assi

st

(IBA)

Brak

e Ass

is

t

(wi

th p

rev

ie

w fu

nc

ti

o

n

)

CCS-12

< SYSTEM DESCRIPTION >

[ICC]

SYSTEM

SYSTEM

System Description

INFOID:0000000006224267

SYSTEM DIAGRAM

ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

JSOIA0289GB

CCS

SYSTEM

CCS-13

< SYSTEM DESCRIPTION >

[ICC]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

Transmit unit

Signal name

Description

ECM

CAN com-
munica-
tion

Closed throttle position signal

Receives idle position state (ON/OFF)

Accelerator pedal position signal

Receives accelerator pedal position (angle)

ICC prohibition signal

Receives an operable/inoperable state of the ICC sys-
tem

ICC steering switch
signal

Main switch signal

Receives the operational state of the ICC steering
switch

SET/COAST switch
signal

CANCEL switch sig-
nal

RESUME/ACCEL-
ERATE switch signal

DISTANCE switch
signal

Engine speed signal

Receives engine speed

Stop lamp switch signal

Receives an operational state of the brake pedal

ICC brake switch signal

Receives an operational state of the brake pedal

Snow mode signal

Receives an operational state of the snow mode

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

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

Stop lamp switch signal

Receives an operational state of the brake pedal

Yaw rate signal

Receives yaw rate acting on the vehicle

Combination
meter

CAN com-
munica-
tion

Parking brake switch signal

Receives an operational state of the parking brake

BCM

CAN com-
munica-
tion

Front wiper request signal

Receives an operational state of front wiper(s)

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

Transfer control
unit

CAN com-
munica-
tion

Current 4WD mode signal

Receives a mode selection state of the 4WD mode

CCS-14

< SYSTEM DESCRIPTION >

[ICC]

SYSTEM

Output Signal Item

DESCRIPTION

Intelligent Cruise Control

The Intelligent Cruise Control (ICC) system maintains a selected distance from the vehicle in front of own vehi-
cle within the speed range of 0 to 144 km/h (0 to 90 MPH) up to the set speed.
The set speed can be selected by the driver between 32 to 144 km/h (20 to 90 MPH).
The vehicle travels at a set speed when the road ahead is clear.
The ICC system can be set to one of two cruise control modes:

CAUTION:

Never set the cruise speed exceeding the posted speed limit.

Vehicle-to-vehicle Distance Control Mode

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

IBA OFF switch

IBA OFF switch signal

Receives an ON/OFF state of the IBA OFF switch

Transmit unit

Signal name

Description

Reception unit

Signal name

Description

ECM

CAN commu-
nication

ICC operation signal

Transmits an ICC operation signal necessary for Intel-
ligent Cruise Control

TCM

CAN commu-
nication

ICC operation signal

Transmits an ICC operation signal necessary for Intel-
ligent Cruise Control via ECM

ABS actuator
and electric
unit (control
unit)

CAN commu-
nication

Brake fluid pressure control signal

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

Combination
meter

CAN commu-
nication

Meter display
signal

Own vehicle indicator
signal

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

Vehicle ahead detec-
tion indicator signal

Set vehicle speed indi-
cator signal

Set distance indicator
signal

SET switch indicator
signal

MAIN switch indicator
signal

ICC warning lamp signal

Transmits an ICC warning lamp signal to turn ON the
ICC system warning lamp

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 turn ON the buzz-
er of the following systems:
• Intelligent Cruise Control (ICC)
• Intelligent Brake Assist (IBA)

ICC sensor

ITS commu-
nication

Vehicle speed signal

Transmits a vehicle speed calculated by the ADAS
control unit

ICC brake hold
relay

ICC brake hold relay drive signal

Activates the brake hold relay and turns ON the stop
lamp