Infiniti FX35, FX50 (S51). Manual - part 277

PREVIEW FUNCTION

BRC-139

< SYSTEM DESCRIPTION >

[BRAKE ASSIST]

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Component Parts Location

INFOID:0000000005530055

1.

Preview function warning lamp

2.

ECM

3.

ICC sensor integrated unit

4.

ICC brake hold relay

5.

Booster solenoid/Release switch

6.

Brake pressure sensor

7.

Stop lamp switch

8.

ICC brake switch

9.

ICC warning chime

10. Brake booster control unit

JSFIA0388ZZ

BRC-140

< SYSTEM DESCRIPTION >

[BRAKE ASSIST]

PREVIEW FUNCTION

Component Description

INFOID:0000000005530056

×

: Applicable

*1: Vehicle-to-vehicle distance control mode

*2: Conventional (fixed speed) cruise control mode

*3: IBA system and Brake Assist (With Preview Function)

NOTE:

Only IBA system uses

A.

Combination meter

B.

Behind the glove box

C.

Front bumper (LH)

D.

Engine room (LH)

E.

Inside brake master cylinder cover

F.

Upper side of brake pedal

G.

Instrument driver lower panel (LH)

H.

Luggage room (RH)

Component

Function Description

Description

*1

*2

*3

ICC sensor integrated unit

×

×

×

Refer to 

CCS-53, "Description"

. 

ECM

×

×

×

Refer to 

CCS-88, "Description"

. 

ABS actuator and electric unit (control 
unit)

×

×

×

Refer to 

CCS-59, "Description"

. 

BCM

×

Transmits the front wiper request signal to ICC sensor inte-
grated unit via CAN communication. 

TCM

×

×

Refer to 

CCS-129, "Description"

. 

Unified meter and A/C amp.

×

×

×

Receives the meter display signal, ICC warning lamp signal, 
and IBA OFF indicator lamp signal from ICC sensor integrat-
ed unit via CAN communication and transmits them to the 
combination meter via the communication line. 

Combination meter

×

×

×

Performs the following operations using the signals received 
from the unified meter and A/C amp. via the communication 
line. 
• Displays the ICC system operation status using the meter 

display signal.

• Illuminates the ICC system warning lamp using the ICC 

warning lamp signal. 

• Illuminates the IBA OFF indicator lamp using the IBA OFF 

indicator lamp signal. 

ICC brake switch

×

×

×

Refer to 

CCS-61, "Description"

. 

Stop lamp switch

×

×

×

ICC brake hold relay

×

×

Refer to 

CCS-81, "Description"

. 

Brake booster control unit

×

×

×

Refer to 

CCS-99, "Description"

. 

Brake booster

×

×

Refer to 

CCS-99, "Description"

. 

Brake pressure sensor

×

×

Refer to 

CCS-69, "Description"

. 

Booster solenoid/Release switch

×

×

• Refer  to 

CCS-71, "Description"

 for booster solenoid. 

• Refer  to 

CCS-74, "Description"

 for release switch. 

ICC warning chime

×

×

×

Refer to 

CCS-142, "Description"

. 

Steering angle sensor

×

Refer to 

CCS-123, "Description"

. 

IBA OFF switch

×

NOTE

Refer to 

CCS-118, "Description"

.

PREVIEW FUNCTION

BRC-141

< DTC/CIRCUIT DIAGNOSIS >

[BRAKE ASSIST]

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DTC/CIRCUIT DIAGNOSIS

PREVIEW FUNCTION

Diagnosis Procedure

INFOID:0000000005234674

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BRAKE ASSIST (PREVIEW FUNCTION) DIAGNOSIS

When the preview function is not operating properly, the buzzer sounds and the preview function warning lamp
will come on. 
NOTE:
The preview function warning lamp shares the ICC system warning lamp.

>> Go to ICC (Full Speed Range). Refer to 

CCS-11, "Work Flow"

.

BRC-142

< SYMPTOM DIAGNOSIS >

[BRAKE ASSIST]

NORMAL OPERATING CONDITION

SYMPTOM DIAGNOSIS

NORMAL OPERATING CONDITION

Description

INFOID:0000000005234675

PRECAUTIONS FOR PREVIEW FUNCTION

• This system is only an aid to assist braking operation and is not a collision warning or avoidance device. It is

the driver

′

s responsibility to stay alert, drive safely and be in control of the vehicle at all times.

• As there is a performance limit to the Preview Function, never rely solely on this system. This system does

not correct careless inattentive or absent-minded driving, or overcome poor visibility in rain, fog, or other bad
weather. Reduce vehicle speed by depressing the brake, in order to maintain a safe distance between vehi-
cles.

• The system may not detect a vehicle ahead, depending on road or weather conditions. While the vehicle still

travels and the Brake Assist System operates under normal conditions, the Preview Function may operate
improperly under the following conditions:

- When rain, snow or dirt adhere to the system sensor
- When strong light (for example, at sunrise or sunset) is directly shining on the front of the vehicle
- Winding or hilly roads may cause the sensor to temporarily not detect a vehicle in the same lane or may

detect objects or vehicles in other lanes.

- Vehicle position in the lane may cause the sensor to temporarily not detect a vehicle in the same lane or may

detect objects or vehicles in other lanes.

• The system will not detect:
- Pedestrians or objects in the roadway
- Oncoming vehicles in the same lane
- Motorcycles traveling offset in the travel lane as illustrated
• When the Preview Function operates, the brake pedal may move

slightly and may make a small noise. This is not a system malfunc-
tion.

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