Nissan Murano Z51 (2013 year). Manual - part 22

DEF-2

BCM (BODY CONTROL MODULE)  ..................

26

Reference Value  .....................................................

26

Wiring Diagram - BCM -  .........................................

49

Fail-safe ..................................................................

53

DTC Inspection Priority Chart ..............................

54

DTC Index ..............................................................

55

SYMPTOM DIAGNOSIS  .............................

58

REAR WINDOW DEFOGGER DOES NOT 
OPERATE ..........................................................

58

Diagnosis Procedure  ..............................................

58

REAR WINDOW DEFOGGER AND DOOR 
MIRROR DEFOGGERS DO NOT OPERATE ...

59

Diagnosis Procedure  ..............................................

59

REAR WINDOW DEFOGGER DOES NOT 
OPERATE BUT BOTH DOOR MIRROR DE-
FOGGERS OPERATE  .......................................

60

Diagnosis Procedure  ..............................................

60

DOOR MIRROR DEFOGGER DOES NOT OP-
ERATE ...............................................................

61

BOTH SIDES .............................................................

61

BOTH SIDES : Diagnosis Procedure  .....................

61

DRIVER SIDE ............................................................

61

DRIVER SIDE : Diagnosis Procedure  ....................

61

PASSENGER SIDE  ...................................................

61

PASSENGER SIDE : Diagnosis Procedure ............

61

ON IS NOT DISPLAYED WHEN PRESSING 
REAR WINDOW DEFOGGER SWITCH BUT 
IT IS OPERATED ...............................................

62

Diagnosis Procedure ...............................................

62

REAR WINDOW DEFOGGER INDICATOR 
DOES NOT ILLUMINATE ..................................

63

Diagnosis Procedure ...............................................

63

PRECAUTION ............................................

64

PRECAUTIONS  .................................................

64

FOR USA AND CANADA  .........................................

64

FOR USA AND CANADA : Precaution for Supple-
mental Restraint System (SRS) "AIR BAG" and 
"SEAT BELT PRE-TENSIONER"  ...........................

64

FOR MEXICO  ............................................................

64

FOR MEXICO : Precaution for Supplemental Re-
straint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER" .................................................

64

REMOVAL AND INSTALLATION ..............

66

FILAMENT .........................................................

66

Inspection and Repair  .............................................

66

Revision: 2012 September

2013 MURANO

DIAGNOSIS AND REPAIR WORK FLOW

DEF-3

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000008456541

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.
Is any DTC detected?

YES

>> Refer to 

BCS-77, "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: 2012 September

2013 MURANO

DEF-4

< SYSTEM DESCRIPTION >

REAR WINDOW DEFOGGER SYSTEM

SYSTEM DESCRIPTION

REAR WINDOW DEFOGGER SYSTEM

WITH BOSE SYSTEM

WITH BOSE SYSTEM : System Diagram

INFOID:0000000008456542

WITH BOSE SYSTEM : System Description

INFOID:0000000008456543

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: 2012 September

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REAR WINDOW DEFOGGER SYSTEM

DEF-5

< SYSTEM DESCRIPTION >

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WITH BOSE SYSTEM : Component Parts Location

INFOID:0000000008456544

WITH BOSE SYSTEM : Component Description

INFOID:0000000008456545

*: 

With mirror defogger

WITHOUT BOSE SYSTEM

1.

BCM

2.

IPDM E/R

3.

Rear window defogger switch
(built-in multifunction switch)

4.

Rear window defogger connector

5.

AV control unit

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: 2012 September

2013 MURANO

DEF-6

< SYSTEM DESCRIPTION >

REAR WINDOW DEFOGGER SYSTEM

WITHOUT BOSE SYSTEM : System Diagram

INFOID:0000000008456546

WITHOUT BOSE SYSTEM : System Description

INFOID:0000000008456547

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: 2012 September

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REAR WINDOW DEFOGGER SYSTEM

DEF-7

< SYSTEM DESCRIPTION >

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WITHOUT BOSE SYSTEM : Component Parts Location

INFOID:0000000008456548

WITHOUT BOSE SYSTEM : Component Description

INFOID:0000000008456549

*: 

With door mirror defogger

1.

BCM

2.

IPDM E/R

3.

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

4.

Rear window defogger connector

5.

A/C auto amp

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: 2012 September

2013 MURANO

DEF-8

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM

COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000008840717

APPLICATION ITEM

CONSULT 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

NOTE:

• *1: For models with rain sensor this mode is displayed, but is not used.

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

FREEZE FRAME DATA (FFD)

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.

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

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

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

×

*

1

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

×

—

AIR CONDITONER*

2

• Intelligent Key system
• Engine start system

INTELLIGENT KEY

×

×

×

Combination switch

COMB SW

×

Body control system

BCM

×

NVIS - NATS

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door opener system

TRUNK

×

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

TPMS (AIR PRESSURE MONITOR)

×

×

×

Revision: 2012 September

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DIAGNOSIS SYSTEM (BCM)

DEF-9

< SYSTEM DESCRIPTION >

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The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT.

NOTE:

*: Power supply position shifts to “LOCK” from “OFF”, when ignition switch is in the OFF position, selector lever is in the P position, and
any of the following conditions are met.

• Closing door

• Opening door

• Door is locked using door request switch

• Door is locked using Intelligent Key

The power supply position shifts to “ACC” when the push-button ignition switch (push switch) is pushed at “LOCK”.

REAR WINDOW DEFOGGER

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

INFOID:0000000008456551

DATA MONITOR

CONSULT screen item

Indication/Unit

Description

Vehicle Speed

km/h

Vehicle speed of the moment a particular DTC is detected

Odo/Trip Meter

km

Total mileage (Odometer value) of the moment a particular DTC is detected

Vehicle Condition

SLEEP>LOCK

Power position status of 
the moment a particular 
DTC is detected

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 engine to run it)

RUN>URGENT

While turning power supply position from “RUN“ to “ACC” (Emer-
gency 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 posi-
tion is “OFF”.) to low power consumption mode

LOCK>SLEEP

While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”*) to low power consumption mode

LOCK

Power supply position is “LOCK”*

OFF

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

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)

IGN Counter

0 - 39

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.

Revision: 2012 September

2013 MURANO

DEF-10

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (BCM)

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

ACTIVE TEST

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

Rear window defogger operates when “ON” on CONSULT screen is touched.

Revision: 2012 September

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POWER SUPPLY AND GROUND CIRCUIT

DEF-11

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000008456552

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: 2012 September

2013 MURANO

DEF-12

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000008456553

• 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:0000000008456554

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-12, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000008456555

WITH BOSE AUDIO SYSTEM

1.

CHECK PRESET SWITCH (REAR WINDOW DEFOGGER SWITCH)

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

AV-160, "Description"

.

• With navigation system. Refer to 

AV-285, "Description"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

AV-255, "Removal and Installation"

.

(without navigation system) or 

AV-414, "Removal and Installation"

 (with navigation system).

WITHOUT BOSE AUDIO SYSTEM

1.

CHECK AUTO A/C

Check the operating condition of auto A/C

Does auto A/C operate normally?

YES

>> GO TO 2.

NO

>> Perform auto A/C diagnosis. Refer to 

HAC-102, "Diagnosis Chart By Symptom"

.

2.

CHECK BCM OUTPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Turn ignition switch ON.

4.

Check voltage between A/C auto amp. harness connector and ground by oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT

(+)

(-)

voltage

(Approx.)

A/C auto amp.

Connector

Terminal

M50

27

Ground

JPMIA0012GB

Revision: 2012 September

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REAR WINDOW DEFOGGER SWITCH

DEF-13

< DTC/CIRCUIT DIAGNOSIS >

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1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector and A/C auto amp. harness connector.

4.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-84, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

REPLACE A/C CONTROL

1.

Turn ignition switch OFF.

2.

Replace A/C control (rear window defogger switch).

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> GO TO 5.

5.

REPLACE A/C AUTO AMP.

1.

Turn ignition switch OFF.

2.

Replace A/C auto amp.

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> GO TO 6.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-45, "Intermittent Incident"

.

Is the inspection result normal?

>> INSPECTION END.

BCM

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M123

130

M50

27

Existed

BCM

Ground

Continuity

Connector

Terminal

M123

130

Not existed

Revision: 2012 September

2013 MURANO

DEF-14

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000008456556

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

Component Function Check

INFOID:0000000008456557

1.

CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1.

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

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-14, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000008456558

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-15, "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: 2012 September

2013 MURANO

REAR WINDOW DEFOGGER RELAY

DEF-15

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-45, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000008456559

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: 2012 September

2013 MURANO

DEF-16

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER

REAR WINDOW DEFOGGER

Description

INFOID:0000000008456560

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:0000000008456561

1.

CHECK REAR WINDOW DEFOGGER

1.

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

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-16, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000008456562

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 6.

NO

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

4.

CHECK FUSE BLOCK (J/B)

(+)

(-)

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: 2012 September

2013 MURANO

REAR WINDOW DEFOGGER

DEF-17

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

DEF

N

O

P

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace fuse block (J/B). 

5.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. Refer to 

DEF-15, "Component Inspection"

Is the inspection result normal?

YES

>> Replace fuse block (J/B).

NO

>> Replace rear window defogger relay.

6.

CHECK FILAMENT

Check the filament for damage or blown.
Refer to 

DEF-66, "Inspection and Repair"

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair filament.

7.

CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Refer to 

GI-45, "Intermittent Incident"

>> INSPECTION END

(+)

(-)

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: 2012 September

2013 MURANO