Nissan Murano Z51 (2008 year). Manual - part 87

DIAGNOSIS AND REPAIR WORKFLOW

DEF-3

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000003303571

DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain the malfunction information (conditions and environment when the malfunc-
tion occurred) as much as possible when the customer brings the vehicle in.

>> GO TO 2.

2.

CHECK DTC

Perform self diagnosis with CONSULT-III
Is any DTC detected?

YES

>> Refer to 

DEF-69, "DTC Index"

NO

>> GO TO 3.

3.

REPRODUCE THE MALFUNCTION INFORMATION

Check the malfunction on the vehicle that the customer describes.
Inspect the relation of the symptoms and the condition when the symptoms occur.

>> GO TO 4.

4.

IDENTIFY THE MALFUNCTIONING SYSTEM WITH “SYMPTOM DIAGNOSIS”

Use “Symptom diagnosis” from the symptom inspection result in step 3. Then identify where to start perform-
ing the diagnosis based on possible causes and symptoms.

>> GO TO 5.

5.

IDENTIFY MALFUNCTIONING PARTS WITH “COMPONENT DIAGNOSIS”

Perform the diagnosis with “Component diagnosis” of the applicable system.

>> GO TO 6.

6.

REPAIR OR REPLACE THE MALFUNCTIONING PARTS

Repair or replace the specified malfunctioning parts.

>> GO TO 7.

7.

FINAL CHECK

Check that malfunctions are not reproduced when obtaining the malfunction information from the customer,
referring to the symptom inspection result in step 3.
Are all malfunctions corrected?

YES

>> INSPECTION END

NO

>> GO TO 4.

Revision: 2008 October

2009 Murano

DEF-4

< FUNCTION DIAGNOSIS >

REAR WINDOW DEFOGGER SYSTEM

FUNCTION DIAGNOSIS

REAR WINDOW DEFOGGER SYSTEM

WITH BOSE SYSTEM

WITH BOSE SYSTEM : System Diagram

INFOID:0000000003303572

WITH BOSE SYSTEM : System Description

INFOID:0000000003303573

Operation Description

• Turn rear window defogger switch ON when the ignition switch is turned ON. Then multifunction switch (rear

window defogger switch) transmits rear window defogger switch signal to AV control unit via AV communica-
tion. AV control unit transmits rear window defogger switch signal to BCM via CAN communication.

• BCM turns rear window defogger relay ON and transmits rear window defogger control signal to IPDM E/R

via CAN communication when rear window defogger switch signal is received.

• Rear window defogger and door mirror defogger (with door mirror defogger) are supplied with power and

operate when rear window defogger relay turns ON.

• IPDM E/R transmits rear window defogger control signal to AV control unit via CAN communication. 
• AV control unit transmit rear defogger indicator signal to multifunction switch (rear window defogger switch)

via AV communication. then rear window defogger indicator is illuminated.

Timer function

• BCM turns rear window defogger relay ON for approximately 15 minutes when rear window defogger switch

is turned ON. It makes rear window defogger and door mirror defogger (with door mirror defogger) operate.

• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns

rear window defogger relay OFF. The same reaction also occurs during timer operation, if the ignition switch
is turned OFF. 

INPUT/OUTPUT SIGNAL CHART

*: With door mirror defogger

JMLIA0005GB

Switch

Input signal to BCM

BCM function

Actuator

Rear window defogger switch

Defogger switch signal

Rear window defogger & Door mir-

ror defogger

*

 control

Rear window defogger

Door mirror defogger 

*

Push button ignition switch

Ignition signal

Revision: 2008 October

2009 Murano

REAR WINDOW DEFOGGER SYSTEM

DEF-5

< FUNCTION DIAGNOSIS >

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WITH BOSE SYSTEM : Component Parts Location

INFOID:0000000003303574

WITH BOSE SYSTEM : Component Description

INFOID:0000000003303575

1.

BCM M118, M119, M122, M123

2.

IPDM E/R E6, E11

3.

Rear window defogger switch
(built-in multifunction switch M125)

4.

Rear window defogger connector 
D184

5.

AV control unit
With NAVI M145, M146
Without NAVI M129, M131

A.

Dash side lower (passenger side)

B.

Engine room dash panel (LH)

C.

Behind rear pillar finisher (LH)

D.

Behind cluster lid C

JMLIA0119ZZ

BCM

• Operates the rear window defogger with the operation of rear window defogger switch.
• Performs the timer control of rear window defogger.

Rear window defogger relay

• Operates the rear window defogger and the door mirror defogger with the control signal from 

BCM.

IPDM E/R

• Transmit rear window defogger control signal to  AV control unit via CAN communication.

Multifunction switch
(Rear window defogger 
switch)

• The rear window defogger switch is installed.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.

AV control unit

• Displays the rear window defogger ON to the display when detecting the operation of rear win-

dow defogger.

Rear window defogger

• Heats the heating wire with the power supply from the rear window defogger relay to prevent 

the rear window from fogging up.

Door mirror defogger

*

• Heats the heating wire with the power supply from the rear window defogger relay to prevent 

the door mirror from fogging up.

Revision: 2008 October

2009 Murano

DEF-6

< FUNCTION DIAGNOSIS >

REAR WINDOW DEFOGGER SYSTEM

*: 

With mirror defogger

WITHOUT BOSE SYSTEM

WITHOUT BOSE SYSTEM : System Diagram

INFOID:0000000003544817

WITHOUT BOSE SYSTEM : System Description

INFOID:0000000003544818

Operation Description

• Turn rear window defogger switch ON when the ignition switch is turned ON. Then A/C control unit (rear win-

dow defogger switch) transmits rear window defogger switch signal to A/C auto amp.. transmits rear window
defogger switch signal to BCM.

• BCM turns rear window defogger relay ON and transmits rear window defogger control signal to IPDM E/R

via CAN communication when rear window defogger switch signal is received. 

• Rear window defogger and door mirror defogger (with door mirror defogger) are supplied with power and

operate when rear window defogger relay turns ON. 

• Rear window defogger relay transmits rear window defogger control signal to A/C auto amp. when rear win-

dow defogger operates. 

• A/C auto amp. transmit rear window defogger indicator signal to A/C control unit (rear window defogger

switch). Then rear window defogger indicator is illuminated.

Timer function

• BCM turns rear window defogger relay ON for approximately 15 minutes when rear window defogger switch

is turned ON. It makes rear window defogger and door mirror defogger (with door mirror defogger) operate.

• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns

rear window defogger relay OFF. The same reaction also occurs during timer operation, if the ignition switch
is turned OFF. 

INPUT/OUTPUT SIGNAL CHART

*: With door mirror defogger

JMLIA0127GB

Switch

Input signal to BCM

BCM function

Actuator

Rear window defogger switch

Defogger switch signal

Rear window defogger & Door mir-

ror defogger

*

 control

Rear window defogger

Door mirror defogger 

*

Push button ignition switch

Ignition signal

Revision: 2008 October

2009 Murano

REAR WINDOW DEFOGGER SYSTEM

DEF-7

< FUNCTION DIAGNOSIS >

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WITHOUT BOSE SYSTEM : Component Parts Location

INFOID:0000000003544819

WITHOUT BOSE SYSTEM : Component Description

INFOID:0000000003544820

*: 

With door mirror defogger

1.

BCM M118, M119, M122, M123

2.

IPDM E/R E6, E11

3.

Rear window defogger switch
(built-in A/C control unit M95)

4.

Rear window defogger connector 
D184

5.

A/C auto amp. M50

A.

Dash side lower (passenger side)

B.

Engine room dash panel (LH)

C.

Behind rear pillar finisher (LH)

D.

Behind cluster lid C

JMLIA0128ZZ

BCM

• Operates the rear window defogger with the operation of rear window defogger switch.
• Performs the timer control of rear window defogger.

Rear window defogger relay

• Operates the rear window defogger and the door mirror defogger with the control signal from 

BCM.

IPDM E/R

• Transmit rear window defogger control signal to ECM via CAN communication.

A/C control unit
(Rear window defogger 
switch)

• The rear window defogger switch is installed.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.

A/C auto amp.

• Displays the rear window defogger ON to the display when detecting the operation of rear win-

dow defogger.

Rear window defogger

• Heats the heating wire with the power supply from the rear window defogger relay to prevent 

the rear window from fogging up.

Door mirror defogger

*

• Heats the heating wire with the power supply from the rear window defogger relay to prevent 

the door mirror from fogging up.

Revision: 2008 October

2009 Murano

DEF-8

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000003303576

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.

×

: Applicable item

*: This item is displayed, but is not used. 

FREEZE FRAME DATA (FFD) AND IGN COUNTER

Freeze Frame Data

The BCM records the following condition at the moment a particular DTC is detected.
• Vehicle Speed
• Odo/Trip Meter

Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Ecu Identification

The BCM part number is displayed.

Configuration

This function is not used even though it is displayed.

System

Sub system selection item

Diagnosis mode

Work Support

Data Monitor

Active Test

Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

×

—

AIR CONDITONER*

×

Intelligent Key system

INTELLIGENT KEY

×

×

×

Combination switch

COMB SW

×

Body control system

BCM

×

IVIS - NATS

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Trunk open

TRUNK

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

TPMS (AIR PRESSURE MONITOR)

×

×

×

Revision: 2008 October

2009 Murano

DIAGNOSIS SYSTEM (BCM)

DEF-9

< FUNCTION DIAGNOSIS >

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• Vehicle Condition (BCM detected condition)

IGN Counter

IGN counter indicates the number of times that ignition switch is turned ON after DTC is detected.
• The number is 0 when a malfunction is detected now.
• The number increases like 1 

→

 2 

→

 3...38 

→

 39 after returning to the normal condition whenever ignition

switch OFF 

→

 ON.

• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

REAR WINDOW DEFOGGER

REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)

INFOID:0000000003303577

Data monitor

ACTIVE TEST

CONSULT screen terms

Description

SLEEP>LOCK

While turning BCM status from low power consumption mode to normal mode (Power supply 
position is “LOCK”)

SLEEP>OFF

While turning BCM status from low power consumption mode to normal mode (Power supply 
position is “OFF”.)

LOCK>ACC

While turning power supply position from “LOCK” to “ACC”

ACC>ON

While turning power supply position from “ACC” to “IGN”

RUN>ACC

While turning power supply position from “RUN” to “ACC” (Vehicle is stopping and selector 
lever is except P position.)

CRANK>RUN

While turning power supply position from “CRANKING” to “RUN” (From cranking up the en-
gine to run it)

RUN>URGENT

While turning power supply position from “RUN“ to “ACC” (Emergency stop operation)

ACC>OFF

While turning power supply position from “ACC” to “OFF”

OFF>LOCK

While turning power supply position from “OFF” to “LOCK”

OFF>ACC

While turning power supply position from “OFF” to “ACC”

ON>CRANK

While turning power supply position from “IGN” to “CRANKING”

OFF>SLEEP

While turning BCM status from normal mode (Power supply position is “OFF”.) to low power 
consumption mode

LOCK>SLEEP

While turning BCM status from normal mode (Power supply position is “LOCK”.) to low pow-
er consumption mode

LOCK

Power supply position is “LOCK” (Ignition switch OFF with steering is locked.)

OFF

Power supply position is “OFF” (Ignition switch OFF with steering is unlocked.)

ACC

Power supply position is “ACC” (Ignition switch ACC)

ON

Power supply position is “IGN” (Ignition switch ON with engine stopped)

ENGINE RUN

Power supply position is “RUN” (Ignition switch ON with engine running)

CRANKING

Power supply position is “CRANKING” (At engine cranking)

Monitor Item

Description

REAR DEF SW

This is displayed even when it is not equipped.

PUSH SW

Indicates [ON/OFF] condition of push switch.

Test Item

Description

REAR DEFOGGER

This test is able to check rear window defogger operation. Rear window defogger operates when 
“ON” on CONSULT-III screen is touched.

Revision: 2008 October

2009 Murano

DEF-10

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000003303578

1.

CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connectors.

3.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

NO

>> Repair or replace harness or connector.

Terminal No.

Signal name

Fuse and fusible link No.

1

Battery power supply

L

11

10

Terminals

Voltage

(Approx.)

(+)

(

−

)

BCM

Ground

Connector

Terminal

M118

1

Battery voltage

M119

11

BCM

Ground

Continuity

Connector

Terminal

M119

13

Existed

Revision: 2008 October

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REAR WINDOW DEFOGGER SWITCH

DEF-11

< COMPONENT DIAGNOSIS >

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REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000003303579

• The rear window defogger is operated by turning the rear window defogger switch ON.
• The indicator lamp in the rear window defogger illuminates when the rear window defogger is operating.

Component Function Check

INFOID:0000000003303580

1.

CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

Check that the indicator lamp of rear window defogger illuminates when rear window defogger switch ON.
Is the inspection result normal?

YES

>> Rear window defogger switch function is OK.

NO

>> Refer to 

DEF-11, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003303581

WITH BOSE AUDIO SYSTEM

1.

CHECK MULTIFUNCTION SWITCH (REAR WINDOW DEFOGGER SWITCH)

Does multifunction switch operate normally?
• Without navigation system. Refer to 

AV-70, "Diagnosis Description"

• With navigation system. Refer to 

AV-575, "Diagnosis Description"

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace multifunction switch (rear window defogger switch). Refer to

AV-773, "Removal and

Installation"

WITHOUT BOSE AUDIO SYSTEM

1.

CHECK A/C CONTROL UNIT (REAR WINDOW DEFOGGER SWITCH)

Does A/C control unit operate normally?
• Without navigation system. Refer to 

AV-14, "Diagnosis Description"

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace A/C control unit (rear window defogger switch). Refer to 

VTL-21, "Removal and Installa-

tion"

Revision: 2008 October

2009 Murano

DEF-12

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000003303582

Power is supplied to the rear window defogger with BCM control.

Component Function Check

INFOID:0000000003303583

1.

CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1.

Perform Active Test (“REAR DEFOGGER”) with CONSULT-III.

2.

Touch “ON”.

3.

Check that the rear window heating wire is getting warmer.

Is the inspection result normal?

YES

>> Rear window defogger relay power supply circuit is OK.

NO

>> Refer to 

DEF-12, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003303584

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse (No.3, located in fuse block (J/B).

-
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK REAR WINDOW DEFOGGER RELAY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 3.

3.

CHECK FUSE BLOCK (J/B)

Check voltage between fuse block (J/B) connector and ground.

Is the inspection result normal?

YES

>> Repair or replace harness or connector between BCM and fuse block (J/B).

NO

>> GO TO 4.

4.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.
Refer to 

DEF-13, "Component Inspection"

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> Replace rear window defogger relay.

(+)

(-)

Condition of rear window defog-

ger switch

Voltage (V)

(Approx.)

BCM

 Connector

Terminal 

M123

151

Ground

ON 0

OFF

Battery voltage

Fuse block (J/B)

Ground

Voltage (V)

(Approx.)

 Connector

Terminal 

M2

4B

Battery voltage

Revision: 2008 October

2009 Murano

REAR WINDOW DEFOGGER RELAY

DEF-13

< COMPONENT DIAGNOSIS >

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5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-40, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000003303585

1.

CHECK REAR WINDOW DEFOGGER RELAY

1.

Turn ignition switch OFF.

2.

Disconnect rear window defogger relay.

3.

Check rear window defogger relay.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace rear window defogger relay.

Terminal

Condition

Continuity

Rear window 

defogger relay

3

5

12 V direct current supply between termi-
nals 1 and 2.

Existed

No current supply

Not existed

SEF497Y

Revision: 2008 October

2009 Murano

DEF-14

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER

REAR WINDOW DEFOGGER

Description

INFOID:0000000003303586

Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window
from fogging up.

Component Function Check

INFOID:0000000003303587

1.

CHECK REAR WINDOW DEFOGGER

1.

Perform Active Test (“REAR DEFOGGER”) with CONSULT-III.

2.

Touch “ON”.

3.

Check that the rear window heating wire is getting warmer.

Is the inspection result normal?

YES

>> Rear window defogger is OK.

NO

>> Refer to 

DEF-14, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003303588

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check the following.

-

20A fuse (No.14, located in fuse block (J/B)

-

20A fuse (No.15, located in fuse block (J/B)

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Disconnect rear window defogger harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between rear window defogger connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between rear window defogger harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace harness or connector between rear window defogger and ground.

4.

CHECK REAR WINDOW DEFOGGER CIRCUIT 1

(+)

(-)

Condition of rear window

 defogger switch

Voltage (V)

(Approx.)

Rear window defogger

Connector

Terminal 

D184

1

Ground

ON

Battery voltage

OFF

0

Rear window defogger 

Ground

Continuity 

Connector

Terminal

D185

2

Existed

Revision: 2008 October

2009 Murano

REAR WINDOW DEFOGGER

DEF-15

< COMPONENT DIAGNOSIS >

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H

I

J

K

M

A

B

DEF

N

O

P

1.

Turn ignition switch OFF.

2.

Disconnect condenser connector.

3.

Check continuity between condenser harness connector and rear window defogger harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connector.

5.

CHECK REAR WINDOW DEFOGGER CIRCUIT 2

1.

Check continuity between fuse block (J/B) harness connector and condenser harness connector.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector between fuse block (J/B) and condenser.

6.

CHECK FUSE BLOCK (J/B)

1.

Turn ignition switch ON.

2.

Check voltage between fuse block (J/B) connector (fuse block side) and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 8.

7.

CHECK CONDENSER

Check condenser. Refer to 

DEF-16, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace condenser.

8.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. Refer to 

DEF-13, "Component Inspection"

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> Replace rear window defogger relay.

9.

CHECK FILAMENT

Check the filament for damage or blown.
Refer to 

DEF-79, "Inspection and Repair"

Is the inspection result normal?

Condenser

Rear window defogger

Continuity 

 Connector

Terminal

Connector

Terminal

B75

2

B184

1

Existed

Fuse block (J/B)

Condenser

Continuity 

 Connector

Terminal

Connector

Terminal

B6

10G

B74

1

Existed

11G

(+)

(-)

Condition of rear window

 defogger switch

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal 

B6

10G

Ground

ON

Battery voltage

OFF

0

11G

ON

Battery voltage

OFF

0

Revision: 2008 October

2009 Murano

DEF-16

< COMPONENT DIAGNOSIS >

REAR WINDOW DEFOGGER

YES

>> GO TO 10.

NO

>> Repair filament.

10.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-40, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000003303589

1.

CHECK CONDENSER

1.

Check continuity between condenser connector and ground part of condenser.

2.

Check condenser.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair condenser.

Condensor

Ground part of 

condenser

Continuity

Connector

Terminal

B74

1

Not existed

B75

2

Condensor

Continuity

Connector

Terminal

Connector

Terminal

B74

1

B75

2

Existed

Revision: 2008 October

2009 Murano

DOOR MIRROR DEFOGGER

DEF-17

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

DOOR MIRROR DEFOGGER

Description

INFOID:0000000003303590

Power is supplied to the door mirror defogger with BCM control.

Component Function Check

INFOID:0000000003303591

1.

CHECK DOOR MIRROR DEFOGGER

1.

Perform Active Test (“REAR DEFOGGER”) with CONSULT-III.

2.

Touch “ON”.

3.

Check that both side door mirror glass is getting warmer.

Is the inspection result normal?

YES

>> Door mirror defogger is OK.

NO

>> Refer to 

DEF-17, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003303592

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse (No.13, located in fuse block (J/B).

-
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK FUSE BLOCK (J/B)

1.

Turn ignition switch ON.

2.

Check voltage between fuse block (J/B)  connector (fuse block side) and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace fuse block (J/B).

3.

CHECK DOOR MIRROR DEFOGGER CIRCUIT

Check voltage between door mirror defogger (driver side) connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the harness or connector.

4.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

Is the inspection result normal?

>> INSPECTION END

(+)

(-)

Condition of rear win-

dow defogger switch

Voltage (V)

(Approx.)

Fuse block (J/B)

Connector

Terminal

M3

10C

Ground

ON

Battery voltage

OFF

0

Door mirror defogger

(driver side)

Ground

Condition of rear win-

dow defogger switch

Voltage (V)

(Approx.)

Connector

Terminal

D3

7

ON

Battery voltage

OFF

0

Revision: 2008 October

2009 Murano

DEF-18

< COMPONENT DIAGNOSIS >

DRIVER SIDE DOOR MIRROR DEFOGGER

DRIVER SIDE DOOR MIRROR DEFOGGER

Description

INFOID:0000000003303593

Heats the heating wire with the power supply from the rear window defogger relay to prevent the door mirror
from fogging up.

Component Function Check

INFOID:0000000003303594

1.

CHECK DRIVER SIDE DOOR MIRROR DEFOGGER

1.

Perform Active Test (“REAR DEFOGGER”) with CONSULT-III.

2.

Touch “ON”.

3.

Check that the driver side door mirror glass is getting warmer.

Is the inspection result normal?

YES

>> Driver side door mirror defogger is OK.

NO

>> Refer to 

DEF-18, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003303595

1.

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect door mirror (driver side) connector. 

3.

Turn ignition switch ON.

4.

Check voltage between door mirror (driver side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector between fuse block (J/B) and door mirror (driver side).

2.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between door mirror (driver side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector between door mirror (driver side) and ground.

3.

CHECK DRIVER SIDE DOOR MIRROR DEFOGGER

Check driver side door mirror defogger.
Refer to 

DEF-19, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace door mirror (driver side). Refer to 

MIR-63, "DOOR MIRROR ASSEMBLY : Removal and

Installation"

4.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.

(+)

(-)

Condition of rear win-

dow defogger switch

Voltage (V)

(Approx.)

Door mirror (driver side)

Connector

Terminal

D3

7

Ground

ON

Battery voltage

OFF

0

Door mirror (driver side)

Ground

Continuity 

Connector

Terminal

D3

19

Existed

Revision: 2008 October

2009 Murano