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Infiniti Q45. Manual - part 4

DESCRIPTION

ACS-9

[ICC]

ACS

Components Description

NKS001JV

: Applicable

*: With LDW models

CAN Communication

NKS001JW

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tric control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.

CAN COMMUNICATION UNIT

Refer to

LAN-40, "CAN Communication Unit"

Component

Vehi-

cle-to-

vehi-

cle dis-

tance

con-

trol

mode

Con-

ven-

tional
(fixed

speed)

cruise

con-

trol

mode

Brake
assist

(with

pre-

view

brake)

Description

ICC unit

Operates electric throttle control actuator and brake booster based on the
sensor signals and CAN communication data, then controls vehicle dis-
tance.

ICC sensor

Irradiates laser beam, and receives reflected laser beam to measure dis-
tance from preceding vehicle.

ECM

Transmits throttle position signal and ICC steering switch signal to ICC unit
through CAN communication.

VDC/TCS/ABS control unit

Transmits wheel speed signal to ICC unit through CAN communication.

Brake pressure sensor

Detects fluid pressure in master cylinder.

Brake booster

Adjusts brake fluid pressure, based on command from ICC unit.

TCM

Transmits gear position signal and output shaft revolution signal to ICC unit
through CAN communication.

Combination meter

Receives ICC system display signal from ICC unit through CAN communi-
cation.

ICC warning chime

Rings by receiving a signal from ICC unit.

Front wiper motor

Is monitored by ICC unit, and ICC unit cancels the ICC system at wiper HI
or LO speed operation. (The wiper switch is cancelled according to wiper
speed though it is at INT.)

ICC brake switch, stop
lamp switch

Transmit operating signal to ICC unit when touching brake pedal. ICC unit
cancels ICC system at driver's brake operation.

Parking brake switch

The ICC system is cancelled when applied.

ICC brake hold relay

Receives stop lamp driving signal from ICC unit, and turns stop lamp ON.

Turn signal*

ICC unit reads turn signal status, and transmits turn indicator signal to
LDW camera unit through CAN communication. (Turn signal does not con-
trol ICC system.)

ACS-10

[ICC]

DESCRIPTION

Switch Operation

NKS001JX

The system is operated by MAIN switch and four control switches, all
mounted on the steering wheel

ICC System Display

NKS001JY

SKIA1203E

No.

Switch name

Description

MAIN switch

Master switch to activate the system

SET/COAST switch

Sets desired cruise speed, reduces speed incrementally

RESUME/ACCELERATE switch

Resumes set speed or increases speed incrementally

CANCEL switch

Deactivates system without erasing set speed

DISTANCE switch

Changes the following distance from: Long, Middle, Short

PKIA9662E

No.

Display items

Description

Vehicle ahead detection indicator

Indicates whether it detects a vehicle ahead.

Own vehicle indicator

Indicates the base vehicle.

Intelligent cruise control system warning
lamp (Orange)

The light comes on if there is a malfunction in the ICC system.

MAIN switch indicator lamp (White)

Indicates that the MAIN switch is ON.

SET switch indicator lamp

Indicates that the conventional (fixed speed) cruise control mode is con-
trolled.

Set distance indicator

Displays the selected distance between vehicles set with the DISTANCE
switch.

Set vehicle speed indicator

Indicates the set vehicle speed.

ACTION TEST

ACS-11

[ICC]

ACS

ACTION TEST

PFP:00000

ICC System Running Test

NKS001JZ

NOTE:
ICC system can set VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE and CONVENTIONAL (FIXED
SPEED) CRUISE CONTROL MODE when selector lever is in “D” and “M” position.

VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE

NOTE:

●

When there is no vehicle ahead, drive at the set speed steadily.

●

When there is a vehicle ahead, control to maintain distance from the vehicle ahead, watching its speed.

Set Checking

Press the MAIN switch for less than 1.5 seconds.

Drive the vehicle between 40 km/h (25 MPH) and 144 km/h (90 MPH).

Press the SET/COAST switch.

Confirm that the desired speed is set as hand is released from the SET/COAST switch.

NOTE:
The set vehicle speed is displayed on the ICC system display in the combination meter.

Check For Increase Of Cruising Speed

Set vehicle-to-vehicle distance control mode at desired speed.

Check if the set speed increases by 1 km/h (1 MPH) as RESUME/ACCELERATE switch is pressed.

NOTE:
The maximum set speed of the vehicle-to-vehicle distance control mode is 144 km/h (90 MPH).

Check For Decrease Of Cruising Speed

Set vehicle-to-vehicle distance control mode at desired speed.

Check if the set speed decreases by 1 km/h (1 MPH) as SET/COAST switch is pressed.

NOTE:

●

Vehicle-to-vehicle distance control mode is automatically cancelled when the driving speed lowers to 32
km/h (20 MPH) due to the deceleration of the vehicle ahead.

●

The minimum set speed of the vehicle-to-vehicle distance control mode is 40 km/h (25 MPH).

Check For Cancellation Of Vehicle-To-Vehicle Distance Control Mode (Normal Driving Condi-
tion) In The Following Cases:

When the brake pedal is depressed after the system is turned ON.

When the selector lever is shifted into “N” (Neutral) position.

When the MAIN switch is turned OFF.

When CANCEL switch is operated.

Check For Restoring Speed That Is Set By Vehicle-To-Vehicle Distance Control Mode Before
Cancellation

Cancel the system by depressing the brake pedal. Then, check if the speed before cancellation is
restored when pressing RESUME/ACCELERATE switch with 40 km/h (25 MPH) or above.

Cancel the system by shifting the selector lever to “N” position. Then, check if the speed set before the
cancellation is restored when RESUME/ACCELERATE switch is pressed.

Check if the speed previously set is restored when RESUME/ACCELERATE switch is operated with driv-
ing 40 km/h (25 MPH), after canceling vehicle-to-vehicle distance control mode by operating the CANCEL
switch.

ACS-12

[ICC]

ACTION TEST

Check For MAIN Switch

Start engine. Then, check if the following operations are per-
formed correctly.

Vehicle-to-vehicle distance control mode is displayed in combi-
nation meter illuminates when MAIN switch is pressed “ON” for
less than 1.5 seconds and ready for operation. The illumination
goes off when MAIN switch is turned to OFF.

“CRUISE” illumination and ICC system display go off when the
ignition switch is turned to OFF while MAIN switch is ON
(“CRUISE” illumination is ON and vehicle-to-vehicle distance
control mode is ready for operation).

Check For RESUME/ACCELERATE, SET/COAST, CANCEL Switches

Check if RESUME/ACCELERATE, SET/COAST, CANCEL switches are operated smoothly.

Check if switches come up as hand is released from the switches.

Check For Distance Switch

Start engine.

Press the MAIN switch for less than 1.5 seconds.

Press the DISTANCE switch.

Check if the set distance indicator changes display in order of:
(Long)

→

(Middle)

→

(Short).

NOTE:
The set distance indicator shows (Long) immediately after the engine starts.

CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
Set Checking

Press the MAIN switch for more than 1.5 seconds.

Drive the vehicle between 40 km/h (25 MPH) and 144 km/h (90 MPH).

Press the SET/COAST switch.

Confirm that the desired speed is set as hand is released from the SET/COAST switch.

NOTE:
The set vehicle speed is not displayed on the ICC system display in the combination meter.

PKIA9663E

PKIC5041E

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