Infiniti QX56 (Z62). Manual - part 307

DAS

DRIVER ASSISTANCE SYSTEMS

DAS-265

< WIRING DIAGRAM >

[FCW]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

JCOWM0366GB

DAS-266

< BASIC INSPECTION >

[FCW]

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000006223691

OVERALL SEQUENCE

DETAILED FLOW

NOTE:
The FCW system shares component parts with the ICC system. If the FCW system has a malfunction perform
diagnosis for the ICC system.

1.

INTERVIEW FOR MALFUNCTION

JPOIA0171GB

DAS

DIAGNOSIS AND REPAIR WORK FLOW

DAS-267

< BASIC INSPECTION >

[FCW]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

It is also important to clarify the customer concerns before starting the inspection. Interview the customer
about the concerns carefully and understand the symptoms fully. 
NOTE:
The customers are not professionals. Never assume that “maybe the customer means···” or “maybe the cus-
tomer mentioned this symptom”. 

>> GO TO 2.

2.

SELF-DIAGNOSIS WITH CONSULT-III

1.

Perform “All DTC Reading” with CONSULT-III. 

2.

Check if the DTC is detected on the self-diagnosis results of “ICC/ADAS”. 

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 3.

3.

ACTION TEST

Perform the ICC system action test to check the operation status. Refer to 

CCS-77, "Description"

.

>> GO TO 4.

4.

SYMPTOM DIAGNOSIS

Perform the applicable diagnosis according to the diagnosis chart by symptom. Refer to 

DAS-268, "Symptom

Table"

. 

>> GO TO 6.

5.

TROUBLE DIAGNOSIS BY DTC

1.

Check the DTC in the self-diagnosis results. 

2.

Perform trouble diagnosis for the detected DTC. Refer to 

DAS-244, "DTC Index"

. 

>> GO TO 6.

6.

MALFUNCTIONING PART REPAIR

Repair or replace the identified malfunctioning parts. 

>> GO TO 7.

7.

REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)

1.

Erases self-diagnosis results. 

2.

Perform “All DTC Reading” again after repairing or replacing the specific items. 

3.

Check if the DTC is detected on the self-diagnosis results of “ICC/ADAS”. 

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 8.

8.

REPAIR CHECK (ACTION TEST)

Perform the ICC system action test. Check that the malfunction symptom is solved or no other symptoms
occur.
Is there any malfunction symptom?

YES

>> GO TO 4.

NO

>> INSPECTION END

DAS-268

< SYMPTOM DIAGNOSIS >

[FCW]

FORWARD COLLISION WARNING SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

FORWARD COLLISION WARNING SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000006223692

CAUTION:

Perform the self-diagnosis with CONSULT-III before the symptom diagnosis. Perform the trouble diag-
nosis if any DTC is detected.

Symptom

Possible cause

Inspection item/Reference page

FCW system is not activated

Warning systems ON indica-
tor is not turned ON 

⇔

 OFF 

when operating warning sys-
tems switch

• Warning systems switch
• Harness between ADAS con-

trol  unit and warning systems 
switch

• Harness between warning 

systems switch and ground

• ADAS control  unit

Warning systems switch circuit

DAS-269