Infiniti QX56 (Z62). Manual - part 297

DAS

DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)

DAS-225

< SYSTEM DESCRIPTION >

[FCW]

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• It displays for up to 5 minutes and then stops.
• If multiple malfunctions exist, up to 6 DTCs can be stored in memory at the most, and the most recent

one is displayed first.

WHEN THE ON BOARD SELF-DIAGNOSIS DOES NOT START

If the on board self-diagnosis does not start, check the following items.

HOW TO ERASE ON BOARD SELF-DIAGNOSIS

1.

Turn the ignition switch OFF.

2.

Start the engine, and then start the on board self-diagnosis.

3.

Press the CANCEL switch 5 times, and then press the DIS-
TANCE switch 5 times under the condition that the on board
self-diagnosis starts.
NOTE:
• Complete the operation within 10 seconds after pressing the

CANCEL switch first.

• If the operation is not completed within 10 seconds, repeat the

procedure from step 1.

4.

DTC 55 is displayed after erasing.
NOTE:
DTCs for existing malfunction can not be erased.

5.

Turn ignition switch OFF, and finish the diagnosis.

CONSULT-III Function (ICC/ADAS)

INFOID:0000000006223680

APPLICATION ITEMS

CONSULT-III performs the following functions via CAN communication using ADAS control unit.

WORK SUPPORT

Assumed abnormal part

Inspection item

Information display

Combination meter malfunction

Check that the self-diagnosis function of the combina-
tion meter operates. Refer to 

MWI-29, "On Board Diag-

nosis Function"

ICC steering switch malfunction

Perform the inspection for DTC“C1A06”. Refer to 

CCS-

94, "Diagnosis Procedure"

Harness malfunction between ICC steering switch and ECM

ECM malfunction

ADAS control unit malfunction

• Check power supply and ground circuit of ADAS con-

trol unit. Refer to 

DAS-62, "Diagnosis Procedure"

.

• Perform SELF-DIAGNOSIS for “ICC/ADAS”with 

CONSULT-III, and then check the malfunctioning 
parts. Refer to 

DAS-38, "DTC Index"

.

PKIB8373E

Diagnosis mode

Description

Work Support

Displays causes of automatic system cancellation occurred during system control

Self Diagnostic Result

Displays the name of a malfunctioning system stored in the ADAS control unit

Data Monitor

Displays ADAS control unit input/output data in real time

Active Test

Enables an operational check of a load by transmitting a driving signal from the ADAS control unit to 
the load

Ecu Identification

Displays ADAS control unit part number

CAN Diag Support Monitor

Displays a reception/transmission state of CAN communication and ITS communication

DAS-226

< SYSTEM DESCRIPTION >

[FCW]

DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)

NOTE:
• Causes of the maximum five cancellations (system cancel) are displayed.
• The displayed cancellation causes display the number of the ignition switch ON/OFF up to 254. It is fixed to

254 if it is over 254. It returns to 0 when the same cancellation cause is detected again.

Display Items for The Cause of Automatic Cancellation 1

Work support items

Description

CAUSE OF AUTO-CANCEL 1

Displays causes of automatic system cancellation occurred during control of the following sys-
tems
• Vehicle-to-vehicle distance control mode
• Conventional (fixed speed) cruise control mode
• Distance Control Assist (DCA)

CAUSE OF AUTO-CANCEL 2

Displays causes of automatic system cancellation occurred during control of the Lane Depar-
ture Prevention (LDP) system

Cause of cancellation

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Description

OPERATING WIPER

×

The wiper operates at HI (it includes when the wiper is operated at 
HI with the wiper switch AUTO position)

OPERATING ABS

×

×

ABS function was operated

OPERATING TCS

×

×

×

TCS function was operated

OPERATING VDC

×

×

×

VDC function was operated

ECM CIRCUIT

×

×

ECM did not permit ICC operation

OPE SW VOLT CIRC

×

×

×

The ICC steering switch input voltage is not within standard range

LASER SUNBEAM

×

×

Intense light such as sunlight entered ICC sensor light sensing part

LASER TEMP

×

×

Temperature around ICC sensor became low

SNOW MODE SW

×

×

SNOW mode switch was pressed

OP SW DOUBLE 
TOUCH

×

×

ICC steering switches were pressed at the same time

VHCL SPD DOWN

×

×

×

Vehicle speed lower than the speed as follows
• Vehicle-to-vehicle distance control mode is 24 km/h (15 MPH)
• Conventional (fixed speed) cruise control mode is 32 km/h (20 

MPH)

WHL SPD ELEC NOISE

×

×

×

Wheel speed sensor signal caught electromagnetic noise

VDC/TCS OFF SW

×

×

VDC OFF switch was pressed

VHCL SPD UNMATCH

×

×

×

Wheel speed became different from A/T vehicle speed

TIRE SLIP

×

×

Wheel slipped

IGN LOW VOLT

×

×

×

Decrease in ADAS control unit IGN voltage

PARKING BRAKE ON

×

×

The parking brake is operating

WHEEL SPD UNMATCH

×

×

×

The wheel speeds of 4 wheels are out of the specified values

DAS

DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)

DAS-227

< SYSTEM DESCRIPTION >

[FCW]

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Display Items for The Cause of Automatic Cancellation 2

SELF DIAGNOSTIC RESULT

Refer to 

DAS-38, "DTC Index"

.

DATA MONITOR

INCHING LOST

×

A vehicle ahead is not detected during the following driving when 
the vehicle speed is approximately 24 km/h (15 MPH) or less

CAN COMM ERROR

×

×

×

ADAS control unit received an abnormal signal with CAN commu-
nication

ABS/TCS/VDC CIRC

×

×

×

An abnormal condition occurs in VDC/TCS/ABS system

ECD CIRCUIT

×

×

×

An abnormal condition occurs in ECD system

ASCD VHCL SPD DTAC

×

Vehicle speed is detached from set vehicle speed

ASCD DOUBLE COMD

×

Cancel switch and operation switch are detected simultaneously

APA HI TEMP

×

The accelerator pedal actuator integrated motor temperature is 
high

ICC SENSOR CAN 
COMM ERR

×

×

Communication error between ADAS control unit and the ICC sen-
sor

4WD LOCK MODE

×

×

×

Shifting of the 4WD shift switch to 4H or 4L

ABS WARNING LAMP

×

×

ABS warning lamp ON

NO RECORD

×

×

×

—

Cause of cancellation

Description

OPE VDC/TCS/ABS 1

The activation of VDC, TCS, or ABS during LDP system control

Vehicle dynamics

Vehicle behavior exceeds specified value

Steering speed

Steering speed was more than the specified value in evasive direction

End by yaw angle

Yaw angle was the end of LDP control

Departure yaw large

Detected more than the specified value of yaw angle in departure direction

ICC WARNING

Target approach warning of ICC system, IBA system or FCW system was activated

CURVATURE

Road curve was more than the specified value

Steering angle large

Steering angle was more than the specified value

Brake is operated

Brake pedal was operated

IGN LOW VOLT

Decrease in ADAS control unit IGN voltage

Lateral offset

Distance of vehicle and lane was detached in lateral direction more than the specified value

Lane marker lost

Lane camera unit lost the trace of lane marker

Lane marker unclear

Detected lane marker was unclear

Yaw acceleration

Detected yawing speed was more than the specified value

Deceleration large

Deceleration in a longitudinal direction was more than the specified value

Accel is operated

Accelerator pedal was depressed

Departure steering

Steering wheel was steered more than the specified value in departure direction

Evasive steering

Steering wheel was steered more than the specified value in the evasive direction

R range

Selector lever was operated to R range

Parking brake drift

Rear wheels lock was detected

Not operating condition

Did not meet the operating condition (vehicle speed, turn signal operation, etc)

SNOW MODE SW

SNOW mode switch was pressed

VDC OFF SW

VDC OFF switch was pressed

OPE VDC/ABS 2

The activation of VDC or ABS during a standby time of LDP system control

4WD LOCK MODE

Shifting of the 4WD shift switch to 4H or 4L

NO RECORD

—

DAS-228

< SYSTEM DESCRIPTION >

[FCW]

DIAGNOSIS SYSTEM (ADAS CONTROL UNIT)

Monitored item

[Unit]

ALL SIG

(ICC)

MAI

N

 SIG

(ICC)

MAI

N

 SIG

(LDW/LDP)

MAI

N

 SIG

(BSW

/BSI)

Description

MAIN SW
[On/Off]

×

×

×

×

Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)

SET/COAST SW
[On/Off]

×

×

Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)

CANCEL SW
[On/Off]

×

×

Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)

RESUME/ACC SW
[On/Off]

×

×

Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)

DISTANCE SW
[On/Off]

×

Indicates [On/Off] status as judged from ICC steering switch signal (ECM trans-
mits ICC steering switch signal through CAN communication)

CRUISE OPE
[On/Off]

×

×

Indicates whether controlling or not (ON means “controlling”)

BRAKE SW
[On/Off]

×

×

×

×

Indicates [On/Off] status as judged from ICC brake switch signal (ECM transmits 
ICC brake switch signal through CAN communication)

STOP LAMP SW
[On/Off]

×

×

×

×

Indicates [On/Off] status as judged from stop lamp switch signal (ECM transmits 
stop lamp switch signal through CAN communication)

IDLE SW
[On/Off]

×

Indicates [On/Off] status of idle switch read from ADAS control unit through CAN 
communication (ECM transmits On/Off status through CAN communication)

SET DISTANCE
[Short/Mid/Long]

×

×

Indicates set distance memorized in ADAS control unit

CRUISE LAMP
[On/Off]

×

×

Indicates [On/Off] status of MAIN switch indicator output

OWN VHCL
[On/Off]

×

Indicates [On/Off] status of own vehicle indicator output

VHCL AHEAD
[On/Off]

×

Indicates [On/Off] status of vehicle ahead detection indicator output

ICC WARNING
[On/Off]

×

Indicates [On/Off] status of ICC system warning lamp output

VHCL SPEED SE
[km/h] or [mph]

×

×

×

×

Indicates vehicle speed calculated from ADAS control unit through CAN commu-
nication [ABS actuator and electric unit (control unit) transmits vehicle speed sig-
nal (wheel speed) through CAN communication]

SET VHCL SPD
[km/h] or [mph]

×

×

Indicates set vehicle speed memorized in ADAS control unit

BUZZER O/P
[On/Off]

×

Indicates [On/Off] status of ICC warning chime output

THRTL SENSOR
[deg]

×

×

NOTE:
The item is displayed, but it is not monitored

ENGINE RPM
[rpm]

×

Indicates engine speed read from ADAS control unit through CAN communication 
(ECM transmits engine speed signal through CAN communication)

WIPER SW
 [OFF/LOW/HIGH] 

×

Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request sig-
nal through CAN communication)

YAW RATE
[deg/s]

×

NOTE:
The item is displayed, but it is not monitored

BA WARNING
[On/Off]

×

Indicates [On/Off] status of IBA OFF indicator lamp output

STP LMP DRIVE
[On/Off]

×

×

Indicates [On/Off] status of ICC brake hold relay drive output

D RANGE SW
[On/Off]

×

Indicates [On/Off] status of “D” or “M” positions read from ADAS control unit 
through CAN communication; ON when position “D” or “M” (TCM transmits shift 
position signal through CAN communication).