Infiniti G37 Coupe. Manual - part 323

CCS

ICC SYSTEM FREQUENTLY CANNOT DETECT THE VEHICLE AHEAD/ DETEC-

TION ZONE IS SHORT

CCS-105

< SYMPTOM DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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ICC SYSTEM FREQUENTLY CANNOT DETECT THE VEHICLE AHEAD/
DETECTION ZONE IS SHORT

Description

INFOID:0000000001606965

The detection function may become unstable in the following cases.
• When the reflector of the vehicle ahead is deficient/ not clean enough to reflect the radar.
• When driving a road with extremely sharp corners.
• When the sensor cannot detect the reflector of the vehicle ahead as the vehicle ahead is passing a hill or

passing the peak.

Diagnosis Procedure

INFOID:0000000001606966

1.

VISUAL INSPECTION 1

Check ICC sensor integrated unit body window for contamination and foreign materials.
Is it found?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

REMOVE DIRT AND FOREIGN OBJECTS

Remove any dirt and foreign objects from ICC sensor integrated unit body window. 

>> GO TO 6.

3.

VISUAL INSPECTION 2

Check ICC sensor integrated unit body window for cracks and scratches.
Is it found?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

ADJUST LASER BEAM AIMING 

1.

Adjust laser beam aiming. Refer to 

CCS-7, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

2.

Perform ICC system action test. Refer to 

CCS-11, "ACTION TEST : Special Repair Requirement (Vehicle-

To-Vehicle Distance Control Mode)"

.

3.

Check if preceding vehicle detection performance has been improved.

Is it improved?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Adjust laser beam aiming. Refer to 

CCS-7, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

>> GO TO 6.

6.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to 

CCS-11, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system. 

>> INSPECTION END

CCS-106

< SYMPTOM DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL

THE SYSTEM DOES NOT DETECT THE VEHICLE AHEAD AT ALL

Description

INFOID:0000000001606967

When the ICC system is active, the vehicle-to-vehicle distance control mode does not perform any control
even though there is a vehicle ahead. 

Diagnosis Procedure

INFOID:0000000001606968

1.

CHECK ICC SYSTEM DISPLAY IN COMBINATION METER

1.

Perform the combination meter self-diagnosis. Refer to 

MWI-35, "Diagnosis Description"

.

2.

Check if the multi information display turns on normally. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace combination meter.

2.

VISUAL INSPECTION 1

Check ICC sensor integrated unit body window for contamination and foreign materials.
Is it found?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

REMOVE DIRT AND FOREIGN OBJECTS

Remove any stain and foreign materials from the ICC sensor integrated unit body window. 

>> GO TO 6.

4.

VISUAL INSPECTION 2

Check ICC sensor integrated unit body window for cracks and scratches.
Is it found?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

ADJUST LASER BEAM AIMING 

1.

Adjust laser beam aiming. Refer to 

CCS-7, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

2.

Perform ICC system action test. Refer to 

CCS-11, "ACTION TEST : Special Repair Requirement (Vehicle-

To-Vehicle Distance Control Mode)"

.

3.

Check if preceding vehicle detection performance has been improved.

Is it improved?

YES

>> INSPECTION END

NO

>> GO TO 6.

6.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Adjust laser beam aiming. Refer to 

CCS-7, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

>> GO TO 7.

7.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to 

CCS-11, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system. 

>> INSPECTION END

CCS

NORMAL OPERATING CONDITION

CCS-107

< SYMPTOM DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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NORMAL OPERATING CONDITION

Description

INFOID:0000000001606969

PRECAUTIONS FOR VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE

• Intelligent Cruise Control is functionally limited. This never support careless driving and low visibility (rain,

fog, etc.). Drive the vehicle safely. Keep a safe distance between vehicles by decreasing the vehicle speed
according to the driving condition etc. 

• Intelligent Cruise Control never stop the vehicle automatically. Intelligent Cruise Control is automatically

released, and the buzzer sounds if any vehicle ahead is not detected when the vehicle speed is approxi-
mately 35 km (21.5 MPH) or less.

• Use this system when the vehicle speed does not extremely change. This system may not properly function

when any vehicle cuts in, or when the vehicle ahead suddenly applies the brake. Then, the warning (buzzer
and indication) activates.

• Never use Intelligent Cruise Control in the following conditions.
- A well-trafficed road, and a tight turn. 

It may cause any accident because the driving does not fit to the road condition.

- A slippery road (e.g., freezing, or snowy road) 

The vehicle may lose the control by wheelspin.

- The vehicle drives in bad whether (rain, fog, snow etc.).

The distance from the vehicle ahead is not detected precisely if the whether condition is bad. Intelligent
Cruise Control is released automatically if the wiper activates in low or high speed.

- The vehicle receives bright light (sunshine etc.).

The distance from the vehicle ahead is not detected precisely if bright light enters in the vehicle.

- Raindrop or snow is on the sensor.

The distance from the vehicle ahead is not detected precisely if raindrop or snow attaches on the sensor.

- A steep downhill

The setting vehicle speed may exceed if Intelligent Cruise Control does not detect the vehicle ahead. The
brake may heat up in the vehicle-to-vehicle distance control mode.

- A repeated uphill and downhill

Intelligent Cruise Control may not detect the vehicle ahead precisely. An accident may occur by tailgating.

- Maintaining proper vehicle distance is difficult due to frequent acceleration/deceleration.

It may cause any accident because the driving does not fit to the road condition if keeping a proper vehicle-
to-vehicle distance is difficult.

- When entering in the highway interchange (swerving off the main

line),
Unexpected accident may cause if the vehicle ahead drives slower
than the preset vehicle speed. The vehicle-to-vehicle distance con-
trol mode accelerates automatically because the vehicle ahead is
not detected on the lane if the own vehicle or the vehicle ahead
changes the lane.

• Intelligent Cruise Control does not activate to the parking vehicles,

and vehicles driving extremely slower than the own vehicle. Never
hit the vehicle stopping at a tollgate, or the tail end of traffic jam.

• Intelligent Cruise Control does not activate to the vehicle edging

way, and non-vehicle objects (passengers etc.).

• This function detects the reflector of the vehicle ahead. Intelligent Cruise Control may not detect the vehicle

ahead, and keep a proper vehicle-to-vehicle distance in the following conditions. Drive the vehicle according
to the driving condition.

- The vehicle ahead installs the reflector higher (trailer etc.).
- The rear of the vehicle ahead is extremely dirt.
- The vehicle ahead or vehicle on other lanes splashes water or snow on the road.
- The vehicle ahead provides dark exhaust gas. Smoke blocks the visibility. 
- The vehicle ahead attaches film on the reflector. The vehicle ahead does not install the reflector. The reflec-

tor is broken.

- Extremely heavy load is on the rear seat, or the trunk room.
- The vehicle drives on a repeated uphill and downhill

EL-2980D

CCS-108

< SYMPTOM DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

NORMAL OPERATING CONDITION

• The sensor detection distance is limited if the vehicle-to-vehicle

distance is close. The vehicle distance may not maintain properly
because the motorcycle (A) driving on the lane edge is not
detected or detecting the vehicle ahead (cutting in the own vehicle)
delays.

• The sensor dirt is detected automatically. But it is not perfect. Dirt

is not judged despite the sensor is dirt. Dirt is not detected if snow
or ice is on the sensor.
Keeping the vehicle-to-vehicle distance is difficult. Drive the vehi-
cle safely. Always clean the sensor.
Intelligent Cruise Control is released automatically if dirt is
detected.

• The vehicle ahead may not be detected temporarily, the vehicle or object on the neighboring lane may be

detected or the warning buzzer may sound according to the road shape (curve and narrow road) and the
own vehicle condition (steering, driving lane position, accident, malfunction etc.). 
The vehicle ahead is not detected temporarily. The vehicle approaches too close.

PRECAUTIONS FOR CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE

• Conventional cruise control mode does neither control the brake nor activate the warning.

Drive the vehicle safely. Keep a safe distance between vehicles by decreasing the vehicle speed according
to the driving condition etc. 

• Never use the conventional cruise control mode in the following conditions.
- A well-trafficed road, and a tight turn. 

It may cause any accident because the driving does not fit to the road condition.

- A slippery road (e.g., freezing, or snowy road) 

The vehicle may lose the control by wheelspin.

- A steep downhill

The engine brake does not activate effectively on a steep downhill. The preset vehicle speed may exceed. 

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