Nissan Murano. Manual - part 446

AWD LOCK SWITCH

DLN-23

< DTC/CIRCUIT DIAGNOSIS >

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AWD LOCK SWITCH

Description

INFOID:0000000009718102

Able to select AUTO or LOCK mode.

Component Function Check

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1.

CHECK AWD LOCK SWITCH OPERATION

Check that AWD LOCK indicator lamp is in a condition as shown in the following table.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

DLN-23, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009718104

1.

CHECK AWD LOCK SWITCH

Check AWD lock switch. Refer to 

DLN-24, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace AWD lock switch.

2.

CHECK AWD LOCK SWITCH CIRCUIT (1)

Check the continuity between AWD lock switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK AWD LOCK SWITCH CIRCUIT (2)

1.

Disconnect AWD control unit harness connector.

2.

Check the continuity between AWD control unit harness connector and AWD lock switch harness connec-
tor.

3.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

Condition

AWD LOCK indicator lamp

When the switch is pressed in LOCK mode.

ON

When the switch is pressed in AUTO mode.

OFF

AWD lock switch

—

Continuity

Connector

Terminal

M8

3

Ground

Existed

AWD control unit

AWD lock switch

Continuity

Connector

Terminal

Connector

Terminal

M69

14

M8

1

Existed

AWD control unit

—

Continuity

Connector

Terminal

M69

14

Ground

Not existed

DLN-24

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AWD LOCK SWITCH

4.

CHECK AWD CONTROL UNIT OUTPUT SIGNAL

1.

Connect AWD control unit harness connector.

2.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

3.

Check the voltage between AWD lock switch harness connector and ground.

Is the inspection result normal?

YES

>> Check each harness connector pin terminal for disconnection.

NO

>> Replace AWD control unit. Refer to 

DLN-53, "Exploded View"

.

Component Inspection

INFOID:0000000009718105

1.

CHECK AWD LOCK SWITCH

1.

Turn the ignition switch OFF.

2.

Remove AWD lock switch.

3.

Check the continuity between AWD lock switch connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace AWD lock switch.

AWD lock switch

—

Voltage

Connector

Terminal

M8

1

Ground

Battery voltage

AWD lock switch

Condition

Continuity

Terminal

1

3

When releasing AWD lock switch.

Not existed

When AWD lock switch is hold pressed.

Existed

AWD WARNING LAMP

DLN-25

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AWD WARNING LAMP

Description

INFOID:0000000009718106

• Turns ON when there is a malfunction in AWD system. AWD warning lamp indicates the vehicle is in fail-safe

mode and shifting to front-wheel drive or 4-wheel drive (rear-wheels still have some driving torque).

• Also turns ON when ignition switch is turned ON, for the purpose of lamp check. Turns OFF after the engine

starts if system is normal.

AWD WARNING LAMP INDICATION

CAUTION:

• AWD warning lamp also turns ON due to data reception error, CAN communication error etc.

Component Function Check

INFOID:0000000009718107

1.

CHECK AWD WARNING LAMP FUNCTION 

1.

Turn ignition switch ON.

2.

Check that AWD warning lamp lights up.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

DLN-25, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009718108

1.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Perform the trouble diagnosis for power supply and ground circuit. Refer to 

DLN-21, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the error-detected parts.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is any detected?

YES

>> Check the DTC.

NO

>> GO TO 3.

3.

CHECK AWD WARNING LAMP SIGNAL

With CONSULT

1.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

2.

Check “4WD WARN LAMP” of CONSULT “DATA MONITOR” for “ALL MODE AWD/4WD”.

Does the item on “DATA MONITOR” indicate “On”?

YES

>> GO TO 4.

Condition

AWD warning lamp

Lamp check

Turns ON when ignition switch is turned ON. Turns OFF after 

the engine start.

AWD system malfunction

ON

Protection function is activated due to heavy load to electric controlled 
coupling. (AWD system is not malfunctioning and AWD system chang-
es to front wheel drive.)

Quick blinking: 2 times/second

 (Blinking in approx. 1 minute and then turning OFF)

Large difference in diameter of front/rear tires

Slow blinking: 1 time/2 seconds

(Continuing to blink until turning ignition switch OFF)

Other than above (system normal)

OFF

DLN-26

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AWD WARNING LAMP

NO

>> Replace AWD control unit. Refer to 

DLN-53, "Exploded View"

.

4.

CHECK COMBINATION METER POWER SUPPLY CIRCUIT

Perform the trouble diagnosis for combination meter power supply circuit. Refer to 

MWI-44, "COMBINATION

METER : Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace the error-detected parts.