Infiniti FX35 / FX45. Manual - part 16

 

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Infiniti FX35 / FX45. Manual - part 16

 

 

ACS-58

< SERVICE INFORMATION >

[ICC]

TROUBLE DIAGNOSIS FOR SYMPTOMS

• 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 mal-
function in detecting the vehicle ahead, check the system following the 

ACS-58, "Symptom 7 ICC System

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

.

1.

CHECK ICC WARNING CHIME

With “Active Test” of “ICC”, check that ICC warning chime operates normally.

OK or NG

OK

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

sounded: after replacing ICC unit. Perform ICC system running test, and then perform self-diag-
nosis of ICC system again.

NG

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS OF ICC SYSTEM

1.

Perform self-diagnosis of ICC system. 

2.

Check if “DTC 20 CAN COMM CIRCUIT” is indicated.

Is it indicated?

YES

>> Refer to 

ACS-36, "DTC 20 CAN COMM CIRCUIT"

.

NO

>> GO TO 3.

3.

PERFORM SELF-DIAGNOSIS OF UNIFIED METER AND A/C AMP.

Perform self-diagnosis of unified meter and A/C amp. Refer to 

DI-27, "CONSULT-III Function (METER/M&A)"

.

OK or NG

OK

>> 1.

Replace combination meter.

2.

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

NG

>> 1.

Repair or replace applicable item.

2.

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

Symptom 6 Driving Force Is Hunting

INFOID:0000000001328854

1.

CHECK SELF-DIAGNOSIS OF ECM

Perform self-diagnosis of ECM.
OK or NG

OK

>> Refer to 

ACS-58, "Symptom 7 ICC System Frequently Cannot Detect the Vehicle Ahead/ Detec-

tion Zone Is Short"

.

NG

>> 1.

Repair or replace applicable parts.

2.

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

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

INFOID:0000000001328855

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 radar cannot detect the reflector of the vehicle ahead as the vehicle ahead is passing a hill or

passing the peak.

1.

VISUAL CHECK 

Check ICC sensor body window for contamination and foreign materials.

OK or NG

OK

>> If any contamination or foreign materials are found, remove them. Then perform ICC system run-

ning test.

NG

>> GO TO 2.

2.

CHECK FUNCTION 

TROUBLE DIAGNOSIS FOR SYMPTOMS

ACS-59

< SERVICE INFORMATION >

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

N

O

P

After adjusting ICC sensor beam aiming, perform ICC system running test. Check that preceding vehicle
detection performance has been improved.
OK or NG

OK

>> INSPECTION END

NG

>> 1.

Replace ICC sensor, and perform laser beam aiming adjustment.

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

INFOID:0000000001328856

1.

VISUAL CHECK 1

With ignition switch turned ON (engine not started), check that all indicator lamps in ICC system display are
continuously lit. (Check for a missing segment in preceding vehicle detection display.) 

OK or NG

OK

>> GO TO 2.

NG

>> Check for combination meter. Refer to 

DI-15, "Trouble Diagnosis"

2.

 VISUAL CHECK 2

Check ICC sensor body window for contamination and foreign materials.

OK or NG

OK

>> If any contamination or foreign materials are found, remove them. Perform ICC system running

test. 

NG

>> GO TO 3.

3.

VISUAL CHECK 3

Check ICC sensor body window for cracks and scratches.

OK or NG

OK

>> GO TO 4.

NG

>> 1.

Replace ICC sensor, and perform laser beam aiming adjustment.

2.

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

4.

ADJUST ICC SENSOR

After adjusting ICC sensor beam aiming, perform ICC system running test. Check that preceding vehicle
detection performance has been improved.

OK or NG

OK

>> INSPECTION END

NG

>> 1.

Replace ICC sensor, and perform laser beam aiming adjustment.

2.

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

SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY WILL NOT RUN

INFOID:0000000001544638

PKIB4144E

ACS-60

< SERVICE INFORMATION >

[ICC]

TROUBLE DIAGNOSIS FOR SYMPTOMS

Possible Irregular Condition

1.

CHECK FUSES

Check that any of the fuses is blown.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. 

2.

CHECK ICC SYSTEM DISPLAY

1.

Turn ignition switch ON. 

2.

Check if all displays illuminate.

Do all displays illuminate?

YES

>> GO TO 3.

NO

>> GO TO 6.

3.

CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector, and check terminals for bend and
looseness. 

3.

Check continuity between ECM harness connector terminals.

Open or short lines

Symptoms

Malfunction causes

ICC unit power supply malfunction

No voltage supply from ignition switch

Fuse blown

Harness open

Harness shorted

Ground cable not connected

Harness open

Harness shorted

ICC steering switch malfunction

No signal transmitted

Harness open

Harness shorted

Spiral cable open

Spiral cable shorted

Switch or ECM malfunction

CAN communication system malfunction

Signal not transmitted

Harness open

Harness shorted

CAN communication outside the standard.

Combination meter system malfunction

Indication not possible

Indicator display malfunction

ICC system display segments disappear.

ICC unit malfunction

ICC unit internal malfunction.

Unit

Power source

Fuse No.

ICC unit

Ignition switch (ON)

12

Battery

35

ECM connector

Terminal

Condition

Resistance 

(Approx.)

M90

82

99

When MAIN switch pressed

When MAIN switch released

5.5 k

PKIB4145E

TROUBLE DIAGNOSIS FOR SYMPTOMS

ACS-61

< SERVICE INFORMATION >

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

N

O

P

4.

Check continuity between ECM harness connector and ground.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4. 

4.

CHECK ICC STEERING SWITCH

Check ICC steering switch. Refer to 

ACS-63, "ICC Steering Switch"

.

OK or NG

OK

>> 1.

Repair or replace harness between ECM and ICC steering switch.

2.

Perform self-diagnosis mode for ICC system.

NG

>> 1.

Replace ICC steering switch.

2.

Perform self-diagnosis mode for ICC system.

5.

CHECK SELF-DIAGNOSIS

1.

Connect ECM connector.

2.

Turn ignition switch ON.

3.

Perform self-diagnosis mode for ICC system.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 6.

6.

CHECK CONNECTOR FOR ICC UNIT

1.

Turn ignition switch OFF.

2.

Disconnect ICC unit connector, and check terminals for bend and looseness. 

3.

Connect ICC unit connector.

4.

Turn ignition switch ON.

5.

Check if all displays illuminate.

Do all displays illuminate?

YES

>> Perform self-diagnosis again.

NO

>> GO TO 7.

7.

CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT

Check voltage between ICC unit harness connector terminals.

OK or NG

OK

>> GO TO 8.

NG

>> Repair ICC unit power supply harness.

8.

CHECK GROUND CIRCUIT FOR ICC UNIT

ECM connector

Terminal

Ground

Continuity

M90

82

No

99

PKIB4146E

ICC unit connector

Terminal

Voltage (Approx.)

(+)

(

)

M89

33

Ground

Battery voltage

42

SKIA1173E

 

 

 

 

 

 

 

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