Infiniti FX35, FX50 (S51). Manual - part 388

CCS-372

< SYMPTOM DIAGNOSIS >

[DCA]

NO FORCE GENERATED FOR PUTTING BACK THE ACCELERATOR PEDAL

NO FORCE GENERATED FOR PUTTING BACK THE ACCELERATOR
PEDAL

Description

INFOID:0000000005502009

The DCA switch can be turned ON/OFF but the actuation force of accelerator pedal is not generated.
NOTE:
• When the vehicle ahead detection indicator does not illuminate, the control and warning with the system are

not performed. 

• The actuation force of accelerator pedal may not be generated sufficiently depending on depressing method

or depressing amount of accelerator pedal. 

Diagnosis Procedure

INFOID:0000000005502010

1.

PERFORM THE SELF-DIAGNOSIS

1.

Perform “All DTC Reading” with CONSULT-III. 

2.

Check if any DTC is detected in self-diagnosis results of “ICC” or “ACCELE PEDAL ACT“. 

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

REPAIR OR REPLACE THE MALFUNCTIONING PARTS

Repair or replace malfunctioning parts. Refer to 

CCS-341, "DTC Index"

 (ICC) or 

CCS-362, "DTC Index"

(ACCELE PEDAL ACT). 

>> GO TO 5.

3.

PERFORM ACTIVE TEST

Check if the accelerator pedal actuator operates by the active test items “ACCELERATOR PEDAL ACTUA-
TOR TEST1” and “ACCELERATOR PEDAL ACTUATOR TEST2” of “ACCELE PEDAL ACT” with CONSULT-
III. 

Does it operate?

YES

>> GO TO 4.

NO

>> Replace the accelerator pedal assembly. 

4.

CHECK VEHICLE AHEAD DETECTION PERFORMANCE

Understand the vehicle ahead detection condition when the malfunction occurred. If the detecting function is
malfunctioning, check according to 

CCS-373, "Description"

. 

>> INSPECTION END

5.

CHECK DCA SYSTEM

1.

Erase “self-diagnosis result”, and then perform “All DTC Reading” again after performing the action test.
(Refer to 

CCS-191, "ACTION TEST : Description"

 for action test.)

2.

Check if the DCA system is normal. 

>> INSPECTION END

CCS

FREQUENTLY CANNOT DETECT THE VEHICLE AHEAD / DETECTION ZONE IS 

SHORT

CCS-373

< SYMPTOM DIAGNOSIS >

[DCA]

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FREQUENTLY CANNOT DETECT THE VEHICLE AHEAD / DETECTION
ZONE IS SHORT

Description

INFOID:0000000005502011

Symptom check: Detection function may become unstable under the following conditions. 
• When the reflector of vehicle ahead is broken or dirty. 
• When the vehicle is driving on a curve such as S-curve where the curvature changes. 
• When the vehicle is driving on up-and-down road or passing the peak or foot of slope or passing the break of

the inclination of hill. 

Diagnosis Procedure

INFOID:0000000005502012

1.

VISUAL CHECK (1)

Check ICC sensor integrated unit body window for contamination and foreign materials. 
Do foreign materials adhere?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

WIPE OUT DIRT AND FOREIGN OBJECTS

Wipe out the contamination and/or foreign materials from the ICC sensor integrated unit body window. 

>> GO TO 6.

3.

VISUAL CHECK (2)

Check ICC sensor integrated unit body window for cracks and/or scratches.
Are there cracks?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

LASER BEAM AIMING ADJUSTMENT

1.

Adjust the laser beam aiming. Refer to 

CCS-13, "LASER BEAM AIMING ADJUSTMENT : Description"

. 

2.

Perform action test. Refer to 

CCS-191, "ACTION TEST : Description"

. 

3.

Check that the vehicle ahead detection performance improves. 

Does it improve?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

. 

2.

Adjust the laser beam aiming. Refer to 

CCS-13, "LASER BEAM AIMING ADJUSTMENT : Description"

. 

>> GO TO 6.

6.

CHECK DCA SYSTEM

1.

Erase “self-diagnosis result”, and then perform “All DTC Reading” again after performing the action test.
(Refer to 

CCS-191, "ACTION TEST : Description"

 for action test.)

2.

Check that the DCA system is normal. 

>> INSPECTION END

CCS-374

< SYMPTOM DIAGNOSIS >

[DCA]

THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL

THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL

Description

INFOID:0000000005502013

When DCA system is active, the DCA system does not perform any control even through there is a vehicle
ahead. 

Diagnosis Procedure

INFOID:0000000005502014

1.

CHECK INFORMATION DISPLAY

1.

Start the self-diagnosis mode of combination meter. Refer to 

MWI-43, "Diagnosis Description"

. 

2.

Check that the segment of information display is displayed normally. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the combination meter.

2.

VISUAL CHECK (1)

Check ICC sensor integrated unit body window for contamination and/or foreign materials. 
Do foreign materials adhere?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

WIPE OUT DIRT AND FOREIGN MATERIALS

Wipe out the contamination and/or foreign materials from the ICC sensor integrated unit body window. 

>> GO TO 7.

4.

VISUAL CHECK (2)

Check ICC sensor integrated unit body window for cracks and/or scratches. 
Are there cracks?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

LASER BEAM AIMING ADJUSTMENT

1.

Adjust the laser beam aiming. Refer to 

CCS-13, "LASER BEAM AIMING ADJUSTMENT : Description"

. 

2.

Perform action test. Refer to 

CCS-191, "ACTION TEST : Description"

. 

3.

Check that the vehicle ahead detection performance improves. 

Does it improve?

YES

>> INSPECTION END

NO

>> GO TO 6.

6.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

. 

2.

Adjust the laser beam aiming. Refer to 

CCS-13, "LASER BEAM AIMING ADJUSTMENT : Description"

. 

>> GO TO 7.

7.

CHECK DCA SYSTEM

1.

Erase “self-diagnosis result”, and then perform “All DTC Reading” again after performing the action test.
(Refer to 

CCS-191, "ACTION TEST : Description"

 for action test.)

2.

Check that the DCA system is normal. 

>> INSPECTION END

CCS

NORMAL OPERATING CONDITION

CCS-375

< SYMPTOM DIAGNOSIS >

[DCA]

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NORMAL OPERATING CONDITION

Description

INFOID:0000000005502015

PRECAUTIONS FOR DISTANCE CONTROL ASSIST (DCA)SYSTEM

CAUTION:

• If the vehicle ahead comes to a stop, the vehicle decelerates to a standstill within the limitations of

the system. The system will cancel once it judges that the vehicle has come to a standstill with a
warning chime. To prevent the vehicle from moving, the driver must depress the brake pedal.

• The DCA system will not apply brake control while the driver is depressing the accelerator pedal.
• This system is only an aid to assist the driver 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.

• This system will not adapt automatically to road conditions. Do not use the system on roads with

sharp curves, or on icy roads, in heavy rain or in fog.

• The distance sensor will not detect under most conditions.
- Stationary and slow moving vehicles
- Pedestrians or objects in the roadway
- Oncoming vehicles in the same lane
- Motorcycles traveling offset in the travel lane
• As there is a performance limit to the distance control function, never rely solely on the DCA system.

This system does not correct careless, inattentive or absent-minded driving, or overcome poor visi-
bility in rain, fog, or other bad weather. Decelerate the vehicle speed by depressing the brake pedal,
depending on the distance to the vehicle ahead and the surrounding circumstances in order to main-
tain a safe distance between vehicles.

• The system may not detect the vehicle in front of own vehicle in certain road or weather conditions.

To avoid accidents, never use the DCA system under the following conditions.

- On roads with sharp curves
- On slippery road surfaces such as on ice or snow, etc.
- During bad weather (rain, fog, snow, etc.)
- When strong light (for example, at sunrise or sunset) is directly shining on the front of the vehicle
- When rain, snow or dirt adhere to the system sensor
- On steep downhill roads (frequent braking may result in overheating the brakes)
- On repeated uphill and downhill roads
• Do not use the DCA system if own vehicle are towing a trailer. The system may not detect a vehicle

ahead.

• In some road or traffic conditions, a vehicle or object can unexpectedly come into the sensor detec-

tion zone and cause automatic braking. Driver may need to control the distance from other vehicles
using the accelerator pedal. Always stay alert and avoid using the DCA system when it is not recom-
mended in this section.

• The following are some conditions in which the sensor cannot detect the signals.
- When the reflector of the vehicle ahead is positioned high on the vehicle (trailer, etc.)
- When the reflector on the vehicle ahead is missing, damaged or covered
- When the reflector of the vehicle ahead is covered with dirt, snow and road spray
- When the snow or road spray from traveling vehicles reduces the sensor's visibility
- When dense exhaust or other smoke (black smoke) from vehicles reduces the sensor's visibility
- When excessively heavy baggage is loaded in the rear seat or the luggage room of own vehicle
• The DCA system is designed to automatically check the sensor's operation. When the sensor is cov-

ered with dirt or is obstructed, the system will automatically be canceled. If the sensor is covered
with ice, a transparent or translucent vinyl bag, etc., the DCA system may not detect them. In these
instances, the DCA system may not be able to decelerate the vehicle properly. Be sure to check and
clean the sensor regularly. 

• The DCA system is designed to maintain the proper distance to a vehicle moving ahead. To maintain

the distance, the system will decelerate the vehicle as necessary. However, the DCA system can only
apply up to 25% of the vehicles total braking power. If a vehicle moves into the traveling lane ahead
or if a vehicle traveling ahead rapidly decelerates, the distance between vehicles may become closer
because the DCA system cannot decelerate the vehicle quickly enough. If this occurs, the DCA sys-
tem will sound a warning chime and blink the system display to notify the driver to take necessary
action.

• The DCA system does not control vehicle speed or warn when driver approach stationary and slow

moving vehicles. Driver must pay attention to vehicle operation to maintain proper distance from
vehicles ahead.