Infiniti QX56 (Z62). Manual - part 290

DAS

DISTANCE CONTROL ASSIST SYSTEM SYMPTOMS

DAS-197

< SYMPTOM DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

SYMPTOM DIAGNOSIS

DISTANCE CONTROL ASSIST SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000006223650

Symptoms

Reference page

Operation

Switch does not turn ON

Refer to 

DAS-198, "Description"

. 

Switch does not turn OFF

DCA system setting cannot be turned ON on the 
navigation screen

Refer to 

DAS-200, "Description"

.

DCA system setting cannot be turned OFF on the 
navigation screen

DCA system not activated (switch is ON)

Refer to 

DAS-201, "Description"

. 

Display/Chime

Information display is not illuminated (vehicle 
ahead indicator)

Refer to 

MWI-29, "On Board Diagnosis Function"

. 

Chime does not sound

Refer to 

DAS-203, "Description"

. 

Control

No force generated for putting back the accelera-
tor pedal

Refer to 

DAS-205, "Description"

. 

Detection of lead 
vehicle

Frequently cannot detect the vehicle ahead

Refer to 

DAS-206, "Description"

. 

Detection zone is short

System misidentifies a vehicle even though there 
is no vehicle ahead

• Adjust laser beam aiming: Refer to 

CCS-72, "Descrip-

tion"

. 

• Perform action test. Refer to 

DAS-128, "Description"

. 

System misidentifies a vehicle in the next lane

System does not detect the vehicle ahead at all

Refer to 

DAS-208, "Description"

. 

DAS-198

< 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:0000000006223651

The switch does not turn ON

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

dynamic driver assistance switch is depressed.

The switch does not turn OFF

• The DCA system switch indicator does not turn OFF even if the dynamic driver assistance 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:0000000006223652

1.

CHECK DCA SYSTEM SETTING

1.

Start the engine.

2.

After starting the engine wait for 5 seconds or more.

3.

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.

DYNAMIC DRIVER ASSISTANCE SWITCH INSPECTION

1.

Start the engine.

2.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK DCA SYSTEM SWITCH INDICATOR CIRCUIT

1.

Start the engine.

2.

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

3.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 4.

4.

PERFORM THE SELF-DIAGNOSIS OF COMBINATION METER

1.

Perform “All DTC Reading” with CONSULT-III. 

2.

Check if the DTC is detected in self-diagnosis results of “METER/M&A”. Refer to 

MWI-43, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

5.

CHECK STEERING SWITCH CIRCUIT

Check the steering switch circuit. Refer to 

DAS-138, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 7.

6.

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/ADAS”. Refer to 

DAS-100, "DTC Index"

.

Is any DTC detected?

YES

>> GO TO 7.

DAS

SWITCH DOES NOT TURN ON / SWITCH DOES NOT TURN OFF

DAS-199

< SYMPTOM DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

NO

>> GO TO 8.

7.

REPAIR OR REPLACE MALFUNCTIONING PARTS. 

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 

DAS-128, "Description"

 for action test.)

2.

Check that the DCA system is normal. 

>> INSPECTION END

DAS-200

< SYMPTOM DIAGNOSIS >

[DCA]

DCA SYSTEM SETTINGS CANNOT BE TURNED ON/OFF ON THE NAVIGATION 

SCREEN

DCA SYSTEM SETTINGS CANNOT BE TURNED ON/OFF ON THE NAVI-
GATION SCREEN

Description

INFOID:0000000006223653

• 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.
• After turning ON the ignition switch or starting the engine, DCA settings of the navigation system cannot be

selected for several tens of seconds under the following conditions:

- After replacing AV control unit.
- After erasing connection history of the navigation system.
- After erasing self-diagnosis results.
• 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:0000000006223654

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/ADAS”, “MULTI AV” and “METER/M&A”.
Refer to the following.

-

ICC/ADAS: 

DAS-100, "DTC Index"

-

MULTI AV: 

AV-57, "DTC Index"

-

METER/M&A: 

WCS-30, "DTC Index"

Is any DTC detected?

YES

>> Repair or replace malfunctioning parts.

NO

>> INSPECTION END

3.

CHECK DATA MONITOR OF ADAS CONTROL UNIT

Check that “DCA SELECT” operates normally in “DATA MONITOR” of “ICC/ADAS” with CONSULT-III. 

Is the inspection result normal?

YES

>> Refer to 

AV-28, "On Board Diagnosis Function"

.

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

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.