Infiniti M35/M45 Y50. Manual - part 18

TROUBLE DIAGNOSIS FOR SYMPTOMS

ACS-65

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

Symptom 3: ICC System Cannot Be Operated by CANCEL Switch, RESUME/
ACCELERATE Switch or DISTANCE Switch

NKS004DM

RESUME does not function in the following cases.

●

When MAIN switch is turned off once.

●

When the vehicle speed is less than 25 MPH (40 km/h).

1. 

CHECK SWITCHES

 With CONSULT-II

With “ICC” “DATA MONITOR”, check if switches operate normally.

●

“RESUME/ACC SW”

●

“CANCEL SW”

●

“DISTANCE SW”

OK or NG

OK

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NG

>> GO TO 2.

2. 

PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

With CONSULT-II

1.

Perform self-diagnosis.

2.

Check if “DTC 100 CAN COMM CIRCUIT” is indicated.

Is it indicated?

YES

>> CAN communication inspection. Refer to 

ACS-61, "DTC 100 CAN COMM CIRCUIT"

 .

NO

>> ICC steering switch inspection. Refer to 

ACS-48, "DTC 6 OPERATION SW CIRC"

 .

Symptom 4: ICC System Is Not Cancelled When the A/T Selector Lever Is In 
Other Than “D” and “M”

NKS004DN

1. 

CHECK D RANGE SWITCH

 With CONSULT-II

With “ICC” “DATA MONITOR”, check if “D RANGE SW” and “NP RANGE SW” operate normally. 
OK or NG

OK

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NG

>> GO TO 2.

2. 

PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

 With CONSULT-II

1.

Perform self-diagnosis.

2.

Check if “DTC 100 CAN COMM CIRCUIT” is indicated.

Is it indicated?

YES

>> CAN communication inspection. Refer to 

ACS-61, "DTC 100 CAN COMM CIRCUIT"

 .

NO

>> GO TO 3.

ACS-66

[ICC]

TROUBLE DIAGNOSIS FOR SYMPTOMS

3. 

CHECK D RANGE SWITCH

 With CONSULT-II

With “A/T” “DATA MONITOR”, check if “SLCT LVR POSI” operates normally.

OK or NG

OK

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NG

>> 1. Perform “A/T” self-diagnosis. Refer to 

AT-90, "CONSULT-II Function (A/T)"

 .

2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.

Then perform self-diagnosis of ICC system again.

Symptom 5: Chime Does Not Sound

NKS004DO

The chime may not sound occasionally in the following cases even if the distance from the vehicle ahead is
short:

●

When the speed difference from that of the vehicle ahead is small (both vehicles driving at similar speed).

●

When the vehicle ahead drives at faster speed (the actual distance is increasing).

●

When depressing the accelerator pedal.

●

Chime does not sound when the vehicle is not driving.

●

Chime does not sound when the system does not detect any vehicle ahead. (Diagnose the conditions
under which the system is detecting the vehicle ahead and when the system is malfunctioning. If there is
any malfunction in detecting the vehicle ahead, check the system following the 

ACS-67, "Symptom 7: ICC

System Frequently Cannot Detect the Vehicle Ahead/ Detection Zone Is Short"

 ).

1. 

CHECK ICC WARNING CHIME

With CONSULT-II

With “ICC” “ACTIVE TEST”, check if “ICC BUZZER” operates normally.
OK or NG

OK

>> 1. Determine preceding vehicle detection status when malfunction occurred. If chime should have

sounded: after replacing ICC sensor integrated unit and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test, and then perform self-diagnosis of ICC sys-

tem again.

NG

>> GO TO 2.

2. 

PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

 With CONSULT-II

1.

Perform self-diagnosis. 

2.

Check if “DTC 100 CAN COMM CIRCUIT” is indicated.

Is it indicated?

YES

>> CAN communication inspection. Refer to 

ACS-61, "DTC 100 CAN COMM CIRCUIT"

 .

NO

>> GO TO 3.

3. 

CHECK UNIFIED METER AND A/C AMP.

With CONSULT-II

Perform “METRE A/C AMP” self-diagnosis. Refer to 

DI-31, "CONSULT-II Function (METER A/C AMP)"

 .

Is malfunction indicated?

YES

>> 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> GO TO 4.

TROUBLE DIAGNOSIS FOR SYMPTOMS

ACS-67

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

4. 

CHECK CHIME OPERATION

With CONSULT-II

1.

Select “BUZZER” on “BCM”.

2.

With “BUZZER” “ACTIVE TEST”, check if “IGN KEY WARN ALM” and “LIGHT WARN ALM” operate nor-
mally.

Does chime sound?

YES

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> 1. Replace combination meter.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

Symptom 6: Driving Force Is Hunting

NKS004DP

1. 

PERFORM ECM SELF-DIAGNOSIS

With CONSULT-II

Perform “ENGINE” self-diagnosis. Refer to 

EC-123, "CONSULT-II Function (ENGINE)"

  (for VQ35DE) or 

EC-

826, "CONSULT-II Function (ENGINE)"

  (for VK45DE).

Is malfunction indicated?

YES

>> 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> Refer to 

ACS-67, "Symptom 7: ICC System Frequently Cannot Detect the Vehicle Ahead/ Detec-

tion Zone Is Short"

 .

Symptom 7: ICC System Frequently Cannot Detect the Vehicle Ahead/ Detection 
Zone Is Short

NKS004DQ

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.

1. 

VISUAL CHECK 1 

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

Is it found?

YES

>> 1. If any, remove them.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> GO TO 2.

2. 

VISUAL CHECK 2

Check ICC sensor integrated unit body window for cracks and scratches.

Is it found?

YES

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> GO TO 3.

ACS-68

[ICC]

TROUBLE DIAGNOSIS FOR SYMPTOMS

3. 

ADJUST LASER BEAM AIMING 

1.

Adjust laser beam aiming. Refer to 

ACS-15, "LASER BEAM AIMING ADJUSTMENT"

 .

2.

Perform ICC system running test. Check if preceding vehicle detection performance has been improved.

Is it improved?

YES

>> INSPECTION END

NO

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

Symptom 8: The System Does Not Detect the Vehicle Ahead at All

NKS004DR

1. 

CHECK DISPLAY

Check if dot matrix LCD in the combination meter illuminate. Refer to 

DI-17, "Self-Diagnosis Mode of Combi-

nation Meter"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Check combination meter. Refer to 

DI-18, "HOW TO PERFORM TROUBLE DIAGNOSIS"

2. 

 VISUAL CHECK 1

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

Is it found?

YES

>> 1. If any, remove them.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> GO TO 3.

3. 

VISUAL CHECK 2

Check ICC sensor integrated unit body window for cracks and scratches.

Is it found?

YES

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> GO TO 4.

4. 

ADJUST LASER BEAM AIMING 

1.

Adjust laser beam aiming. Refer to 

ACS-15, "LASER BEAM AIMING ADJUSTMENT"

 .

2.

Perform ICC system running test. Check if preceding vehicle detection performance has been improved.

Is it improved?

YES

>> INSPECTION END

NO

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.