Infiniti QX56 (Z62). Manual - part 339

 

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Infiniti QX56 (Z62). Manual - part 339

 

 

DAS

WARNING BUZZER CIRCUIT

DAS-393

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C

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WARNING BUZZER CIRCUIT

Component Function Check

INFOID:0000000006223831

1.

CHECK WARNING BUZZER

1.

Turn the ignition switch ON.

2.

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

3.

With operating the test item, check the operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

DAS-393, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006223832

1.

CHECK WARNING BUZZER POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect the warning buzzer connector.

3.

Turn ignition switch ON.

4.

Check voltage between the warning buzzer harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the warning buzzer power supply circuit.

2.

CHECK WARNING BUZZER GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between the warning buzzer harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK WARNING BUZZER SIGNAL CIRCUIT FOR OPEN

1.

Disconnect the ADAS control unit connector.

2.

Check continuity between the ADAS control unit harness connector and warning buzzer harness connec-
tor.

Is the inspection result normal?

On

: Warning buzzer is activated.

Off

: Warning buzzer is not activated.

Terminals

Voltage

(Approx.)

(+)

(

)

Warning buzzer

Ground

Connector

Terminal

M94

1

Battery voltage

Warning buzzer

Ground

Continuity

Connector

Terminal

M94

3

Existed

ADAS control unit

Warning buzzer

Continuity

Connector

Terminal

Connector

Terminal

B61

12

M94

2

Existed

DAS-394

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

WARNING BUZZER CIRCUIT

YES

>> GO TO 4.

NO

>> Repair the harnesses or connectors.

4.

CHECK WARNING BUZZER SIGNAL CIRCUIT FOR SHORT

Check continuity between the ADAS control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair the harnesses or connectors.

5.

CHECK WARNING BUZZER OPERATION

1.

Connect the warning buzzer connector.

2.

Turn ignition switch ON.

3.

Apply ground to warning buzzer terminal 2.

4.

Check condition of the warning buzzer.

Does warning buzzer sound?

YES

>> Replace the ADAS control unit.

NO

>> Replace the warning buzzer.

ADAS control unit

Ground

Continuity

Connector

Terminal

M61

12

Not existed

DAS

LDW & LDP SYSTEM SYMPTOMS

DAS-395

< SYMPTOM DIAGNOSIS >

[LDW & LDP]

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SYMPTOM DIAGNOSIS

LDW & LDP SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000006223833

NOTE:
For the operational conditions of Lane Departure Warning (LDW) and Lane Departure Prevention (LDP), refer
to the following descriptions.
• LDW: 

DAS-277, "LANE DEPARTURE WARNING (LDW) SYSTEM : System Description"

• LDP: 

DAS-280, "LANE DEPARTURE PREVENTION (LDP) SYSTEM : System Description"

Symptom

Possible cause

Inspection item/Reference page

Indicator/warning lamps do not 
illuminate when ignition switch 
OFF 

 ON

Lane departure warning 
lamp (Yellow) does not illu-
minate.

• Combination meter
• ADAS control unit

Lane departure warning lamp 
does not turned ON
Refer to 

DAS-397, "Description"

LDP ON indicator lamp 
(Green) does not illuminate.

• Combination meter
• ADAS control unit

LDP ON indicator lamp does not 
turned ON
Refer to 

DAS-398, "Description"

Warning systems ON indica-
tor does not illuminate.

• Harness between ADAS 

control unit and warning sys-
tems switch

• Warning systems switch
• ADAS control unit

Warning systems ON indicator 
circuit
Refer to 

DAS-391, "Component 

Function Check"

Lane departure warning 
lamp (Yellow) and LDP ON 
indicator lamp (Green) does 
not illuminate.

• Combination meter
• ADAS control unit

• Lane departure warning lamp 

does not turned ON
Refer to 

DAS-397, "Descrip-

tion"

• LDP ON indicator lamp does 

not turned ON
Refer to 

DAS-398, "Descrip-

tion"

All of indicator/warning 
lamps does not illuminate;
• Lane departure warning 

lamp (Yellow)

• LDP  ON  indicator  lamp 

(Green)

• Warning systems ON indi-

cator

• Power supply and ground cir-

cuit of ADAS control unit

• ADAS control unit

Power supply and ground circuit 
of ADAS control unit
Refer to 

DAS-387, "ADAS CON-

TROL UNIT : Diagnosis Proce-
dure"

LDW system is not activated.
(Indicator/warning lamps illumi-
nate when ignition switch OFF 

 ON)

Warning systems ON indica-
tor is not turned ON 

 OFF 

when operating warning 
systems switch

• Harness between ADAS 

control unit and warning sys-
tems switch

• Harness between warning 

systems switch and ground

• Warning systems switch
• ADAS control unit

Warning systems switch circuit
Refer to 

DAS-389, "Component 

Function Check"

Warning buzzer is not 
sounding.
(Lane departure warning 
lamp is activated.)

• Harness between the IPDM 

E/R and warning buzzer

• Harness between ADAS 

control unit and warning 
buzzer

• Harness between warning 

buzzer and ground

• Warning buzzer
• ADAS control unit

Warning buzzer circuit
Refer to 

DAS-393, "Component 

Function Check"

DAS-396

< SYMPTOM DIAGNOSIS >

[LDW & LDP]

LDW & LDP SYSTEM SYMPTOMS

LDP system is not activated.
(LDW system is functioning nor-
mally)

Indicator lamp is not turned 
ON 

 OFF when operating 

dynamic driver assistance 
switch

• Dynamic driver assistance 

switch

• Combination meter
• ADAS control unit
• AV control unit

• Dynamic driver assistance 

switch (ICC steering switch)
Refer to 

DAS-354, "Compo-

nent Inspection"

• LDP system setting can not be 

turned ON/OFF on the naviga-
tion screen
Refer to 

DAS-400, "Descrip-

tion"

Warning is functioning but 
yawing is not functioning.

• Cause of auto-cancel 2

Refer to 

DAS-291

• Normal operating condition

Refer to 

DAS-401

Warning functions are not timely

(Example)

• Does not function when driving on lane markers
• Functions when driving in a lane
• Functions in a different position from the actual position.

• Camera aiming adjustment
• Lane camera unit
• ADAS control unit

Camera aiming adjustment

DAS-340, "Description"

Functions when changing the course in direction of the turn sig-
nal

Turn indicator signal (CAN)
• BCM
• ADAS control unit

System operates even when us-
ing turn signal
Refer to 

DAS-399, "Description"

Symptom

Possible cause

Inspection item/Reference page

 

 

 

 

 

 

 

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