Infiniti FX35, FX50 (S51). Manual — part 387

CCS-368

< SYMPTOM DIAGNOSIS >

[DCA]

DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)

DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)

Description

INFOID:0000000005502005

The DCA switch can be turned ON/OFF, but the DCA system does not operate.
NOTE:
Never start the operation under the following conditions.

No operation condition

• When the brake pedal depressed
• When the ICC system is set
• When the system judges that the vehicle comes to a standstill by the system control
• When the vehicle ahead is not detected

Operation cancellation condition

• When the DCA switch is turned to OFF
• When the system malfunction occurs
• When ABS or VDC (including the TCS) operates
• When the VDC is turned OFF
• When the snow mode switch is turned ON
• When driving into a strong light (i.e., sunlight)
• When the ICC sensor integrated unit body window is dirty and the measurement of the distance between the

vehicles becomes difficult

Diagnosis Procedure

INFOID:0000000005502006

1.

CHECK CAUSE OF AUTOMATIC CANCELLATION

Check if there is any cancellation cause in the “CAUSE OF AUTO-CANCEL” on “WORK SUPPORT” of “ICC”
with CONSULT-III.

Is it displayed?

Not displayed>>GO TO 2.
“VHCL SPD UNMATCH”>>Refer to

CCS-215, "DTC Logic"

.

“IGN LOW VOLT”>>Refer to

CCS-213, "DTC Logic"

.

“CAN COMM ERROR”>>Refer to

CCS-313, "ICC SENSOR INTEGRATED UNIT : DTC Logic"

.

“ABS/TCS/VDC CIRC”>>Refer to

CCS-217, "DTC Logic"

.

“BCU CIRCUIT”>>Refer to

CCS-257, "DTC Logic"

.

“APA HI TEMP”>>Refer to

CCS-289, "DTC Logic"

.

2.

PERFORM ALL OF THE SELF-DIAGNOSIS

1.

Perform “All DTC Reading”.

2.

Check if any DTC is detected in self-diagnosis results of “ICC”. Refer to

CCS-341, "DTC Index"

.

Is any DTC detected?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

REPAIR OR REPLACE MALFUNCTIONING PARTS

Repair or replace malfunctioning parts identified by the self-diagnosis result.

>> GO TO 6.

4.

CHECK EACH SWITCH AND VEHICLE SPEED SIGNAL

1.

Start the engine.

2.

Check that the following items operate normally in “DATA MONITOR” of “ICC”.

-

“VHCL SPEED SE”

-

“BRAKE SW”

-

“DCA ON SW”

Is there a malfunctioning item?

All items are normal>>GO TO 5.
“VHCL SPEED SE”>>Refer to

CCS-215, "DTC Logic"

.

“BRAKE SW”>>Refer to

CCS-219, "DTC Logic"

.

“DCA ON SW”>>Refer to

CCS-283, "DTC Logic"

.

CCS

DCA SYSTEM NOT ACTIVATED (SWITCH IS ON)

CCS-369

< SYMPTOM DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

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-370

< SYMPTOM DIAGNOSIS >

[DCA]

CHIME DOES NOT SOUND

CHIME DOES NOT SOUND

Description

INFOID:0000000005502007

The warning chime may not sound in some cases when there is a short distance between vehicles. Some
examples are:
• When the vehicles are traveling at the same speed and the distance between vehicles is not changing
• When the vehicle ahead is traveling faster and the distance between vehicles is increasing
• When a vehicle cuts in near own vehicle
• The warning chime will not sound when own vehicle approaches vehicles that are parked or moving slowly.
• The warning chime does not sound when the system does not detect any vehicle ahead. (Diagnose the con-

ditions 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

CCS-373, "Descrip-

tion"

.)

Diagnosis Procedure

INFOID:0000000005502008

1.

PERFORM ACTIVE TEST

Check if the warning chime sounds on the active test item “ICC BUZZER” of “ICC” with CONSULT-III.

Does the warning chime sound?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK THE MALFUNCTION SYMPTOM DURING WARNING CHIME OPERATION

1.

Understand the vehicle ahead detection condition when the malfunction occurred. If the warning chime
should have sounded, 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 8.

3.

CHECK ICC WARNING CHIME CIRCUIT

Check the ICC warning chime circuit. Refer to

CCS-321, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

PERFORM THE SELF-DIAGNOSIS

1.

Perform “All DTC Reading” with CONSULT-III.

2.

Check if the “U1000” is detected in self-diagnosis results of “ICC”.

Is “U1000” detected?

YES

>> GO TO 5.

NO

>> GO TO 7.

5.

CAN COMMUNICATIONS INSPECTION

Check the CAN communication and repair or replace malfunctioning parts. Refer to

CCS-313, "ICC SENSOR

INTEGRATED UNIT : DTC Logic"

.

>> GO TO 8.

6.

REPAIR OR REPLACE MALFUNCTIONING PARTS

Repair or replace malfunctioning parts.

>> GO TO 8.

7.

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"

.

CCS

CHIME DOES NOT SOUND

CCS-371

< SYMPTOM DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

>> GO TO 8.

8.

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