Infiniti QX56 (JA60). Manual - part 169

CCS-12

< FUNCTION DIAGNOSIS >

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

FUNCTION DIAGNOSIS

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

System Description

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For information regarding the automatic speed control device, refer to 

EC-33, "System Description"

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INTELLIGENT CRUISE CONTROL SYSTEM

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< FUNCTION DIAGNOSIS >

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INTELLIGENT CRUISE CONTROL SYSTEM

System Diagram

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System Description

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• The Intelligent Cruise Control (ICC) system automatically maintains a selected distance from the vehicle

ahead according to that vehicle's speed, or at the set speed, if the road ahead is clear.

• The ICC function has two cruise control modes and brake assist (with preview function).

• To activate or deactivate the ICC system and set the vehicle speed and vehicle-to-vehicle distance, use the

ICC steering switch. 

• The operation status of the ICC system is indicated on the ICC system display of the combination meter. 

VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE

• Vehicle-to-vehicle distance control mode, the vehicle can maintain the same speed as other vehicles without

the constant need to adjust the set speed as the driver would with a normal cruise control system.

• The system is intended to enhance the operation of the vehicle when following the vehicle traveling in the

same lane and direction.

• If the ICC sensor integrated unit detects a slower moving vehicle ahead, the system will reduce speed so

that the vehicle ahead can be followed at the selected distance.

• The system automatically controls the throttle and applies the brakes (up to 25% of vehicle braking power) if

necessary.

• The detection range of the sensor is approximately 390 ft (120 m) ahead.

• Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.

CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE

• Conventional (fixed speed) cruise control mode is cruising at preset speeds.

• Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.

BRAKE ASSIST (WITH PREVIEW FUNCTION)

• When the force applied to brake pedal exceeds a certain level, the Brake Assist is activated and generates a

greater braking force than that of a conventional brake booster even with light pedal force.

• When the Preview Function identifies the need to apply the sudden brake by sensing the vehicle ahead in

the same lane and the distance and relative speed from it, it applies the brake pre-pressure before driver

depresses the brake pedal and improves brake response by reducing its free play. 

• Refer to Owner's Manual for BRAKE ASSIST (WITH PREVIEW FUNCTION) operating instructions.

WKIA1976E

CCS-14

< FUNCTION DIAGNOSIS >

INTELLIGENT CRUISE CONTROL SYSTEM

ICC STEERING SWITCH

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

NOTE:

The on board self-diagnosis function of the ICC system can be started with the RESUME/ACCELERATE

switch and SET/COAST switch. Refer to 

CCS-17, "Diagnosis Description"

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In Vehicle-To-Vehicle Distance Control Mode

In Conventional (Fixed Speed) Cruise Control Mode

ICC SYSTEM DISPLAY

For information about the ICC system display, refer to the Owner Manual. 

1.

ACCELERATE/RESUME switch

2.

COAST/SET switch

3.

CANCEL switch

4.

ON/OFF switch

5.

DISTANCE switch

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No.

Switch name

Description

1

ACCEL/RES switch

Resumes set speed or increases speed incrementally.

2

SET/COAST switch

Sets desired cruise speed or reduces speed incrementally.

3

CANCEL switch

Deactivates system without erasing set speed.

4

ON/OFF switch

Master switch to activate the system.

5

DISTANCE switch

Changes the following distance from: Long, Middle, Short.

No.

Switch name

Description

1

ACCEL/RES switch

Resumes set speed or increases speed incrementally.

2

SET/COAST switch

Sets desired cruise speed or reduces speed incrementally.

3

CANCEL switch

Deactivates system without erasing set speed.

4

ON/OFF switch

Master switch to activate the system.

5

DISTANCE switch

Ineffective in this mode.

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INTELLIGENT CRUISE CONTROL SYSTEM

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Component Parts Location

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1.

ICC system display

2.

Combination meter M23, M24 (with 
built in information display)

3.

ICC steering switch M102

4.

ICC brake hold relay E134

5.

ICC sensor E42

6.

ICC brake switch E43

7.

Stop lamp switch E38

8.

ICC unit B13, B17 (view with luggage 
side finisher lower LH removed)

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