Infiniti FX35, FX50 (S51). Manual - part 386

CCS-364

< SYMPTOM DIAGNOSIS >

[DCA]

SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF

SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF

Description

INFOID:0000000005502003

The switch does not turn ON

• When the DCA system setting is ON, the DCA system switch indicator does not illuminate even if the DCA

switch is depressed.

The switch does not turn OFF

• The DCA system switch indicator does not turn off even if the DCA switch is pressed when the DCA system

switch indicator illuminates.

NOTE:
The system cannot be operated when setting conventional (fixed speed) cruise control mode. 

Diagnosis Procedure

INFOID:0000000005502004

1.

CHECK DCA SYSTEM SETTING

Check that DCA system setting on the navigation screen is ON.
Is DCA system setting ON?

YES

>> GO TO 2.

NO

>> Enable the DCA system setting.

2.

PERFORM THE SELF-DIAGNOSIS

1.

Perform “All DTC Reading” with CONSULT-III. 

2.

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

CCS-341, "DTC Index"

.

Is any DTC detected?

YES

>> GO TO 7.

NO

>> GO TO 3.

3.

DCA SWITCH INSPECTION

1.

Start the engine.

2.

Check that “DYNA ASIST SW” operates normally in “DATA MONITOR” of “ICC” with CONSULT-III. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK DCA SYSTEM SWITCH INDICATOR CIRCUIT

1.

Start the engine.

2.

Select the active test item “DCA INDICATOR” of “ICC” with CONSULT-III. 

3.

Check if the DCA system switch indicator illuminates when the test item is operated. 

Is the inspection result normal?

YES

>> Refer to 

GI-36, "Intermittent Incident"

.

NO

>> GO TO 5.

5.

CHECK DATA MONITOR OF UNIFIED METER AND A/C AMP.

Check that “DCA IND” operates normally in “DATA MONITOR” of “METER/M&A” with CONSULT-III. 
Is the inspection result normal?

YES

>> Replace the combination meter. 

NO

>> Replace the unified meter and A/C amp.

6.

CHECK STEERING SWITCH CIRCUIT

Check the steering switch circuit. Refer to 

CCS-224, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

REPAIR OR REPLACE MALFUNCTIONING PARTS. 

CCS

SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF

CCS-365

< SYMPTOM DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

Repair or replace malfunctioning parts. 

>> 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 that the DCA system is normal. 

>> INSPECTION END

CCS-366

< SYMPTOM DIAGNOSIS >

[DCA]

DCA SYSTEM SETTING CANNOT BE TURNED ON/OFF FROM THE NAVIGA-

TION SCREEN

DCA SYSTEM SETTING CANNOT BE TURNED ON/OFF FROM THE NAV-
IGATION SCREEN

Description

INFOID:0000000005548663

• DCA system setting is not selectable on the navigation screen.

NOTE:
When the ignition switch is in ACC position, DCA system settings cannot be changed.

- Distance Control Assist is not indicated on the navigation screen.
- The switching between ON and OFF cannot be performed by operating the navigation system.
- The item of Distance Control Assist on the navigation screen is not active.
• The DCA system setting differs from the one set at the previous driving. 

NOTE:
Turn OFF the ignition switch and wait for 5 seconds or more.

Diagnosis Procedure

INFOID:0000000005589418

1.

CHECK DCA SYSTEM SETTING

1.

Start the engine.

2.

Check that the DCA system settings is selectable on the navigation screen.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

PERFORM THE SELF-DIAGNOSIS

1.

Perform “All DTC Reading” with CONSULT-III. 

2.

Check if the DTC is detected in self-diagnosis results of “ICC”, “MULTI AV” and “METER/M&A”. Refer to
the following.

-

ICC: 

CCS-341, "DTC Index"

-

MULTI AV (Single monitor): 

AV-200, "DTC Index"

-

MULTI AV (Twin monitor): 

AV-408, "DTC Index"

-

METER/M&A: 

MWI-119, "DTC Index"

Is any DTC detected?

YES

>> GO TO 5.

NO

>> INSPECTION END

3.

CHECK DATA MONITOR OF ICC SENSOR INTEGRATED UNIT

Check that “DCA SELECT” operates normally in “DATA MONITOR” of “ICC” with CONSULT-III. 
Is the inspection result normal?

YES

>> Refer to 

AV-175, "On Board Diagnosis Function"

 (Single monitor) or 

AV-382, "On Board Diagnosis

Function"

 (Twin monitor).

NO

>> GO TO 4.

4.

CHECK MULTIFUNCTION SWITCH

Operate the multifunction switch to check that the audio, navigation system, and air conditioner operate prop-
erly.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning parts.

5.

REPAIR OR REPLACE MALFUNCTIONING PARTS

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

>> GO TO 7.

6.

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

DCA SYSTEM SETTING CANNOT BE TURNED ON/OFF FROM THE NAVIGA-

TION SCREEN

CCS-367

< SYMPTOM DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

>> GO TO 7.

7.

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