Perform the self-diagnosis with CONSULT-III. Check that any DTC is not detected. Erase DTC if DTC is
detected before the repair. Check that DTC is not detected again.

Is any DTC detected?

YES

>> GO TO 5.

>> GO TO 11.

11.

REPAIR CHECK (OPERATION CHECK)

Check the operation of each part.
Does it operate normally?

YES

>> INSPECTION END

>> GO TO 3.

Revision: 2008 October

2009 Murano

EXL-8

< FUNCTION DIAGNOSIS >

[XENON TYPE]

HEADLAMP SYSTEM

FUNCTION DIAGNOSIS

HEADLAMP SYSTEM

System Diagram

INFOID:0000000003261555

System Description

INFOID:0000000003261556

OUTLINE

• Mobile valve shade type is adopted. Xenon headlamp switches the high beam and the low beam with one

xenon bulb each on right and left.

• Headlamp is controlled by combination switch reading function and headlamp control function of BCM, and

relay control function of IPDM E/R.

HEADLAMP BASIC OPERATION

• BCM detects the combination switch condition with the combination switch reading function.
• BCM transmits the low beam request signal to IPDM E/R with CAN communication according to the head-

lamp ON condition.

Headlamp ON condition

- Lighting switch 2ND
- Lighting switch PASS
- Lighting switch AUTO, and the auto light function ON judgment (With auto light system)
• IPDM E/R turns the integrated headlamp low relay ON, and turns the headlamp ON according to the low

beam request signal.

HEADLAMP HI/LO SWITCHING OPERATION

• BCM transmits the high beam request signal to IPDM E/R and the combination meter with CAN communica-

tion according to the high beam switching condition.

High beam switching condition

- Lighting switch HI with the lighting switch 2ND or AUTO (auto light function ON judgment)
- Lighting switch PASS
• Combination meter turns the high beam indicator lamp ON according to the high beam request signal.
• IPDM E/R turns the integrated headlamp high relay ON, and turns the headlamp ON according to the high

beam request signal.

JPLIA1036GB

Revision: 2008 October

2009 Murano

HEADLAMP SYSTEM

EXL-9

< FUNCTION DIAGNOSIS >

[XENON TYPE]

EXL

• When the headlamp high relay is turned ON, magnetic force is

applied to the high beam solenoid (1) by a current. The mobile
valve shade (3) is switched to the high beam position through the
actuator rod (2).

• When the headlamp high relay is turned OFF, the current stops.

The mobile valve shade returns to the low beam position automati-
cally.

Component Parts Location

INFOID:0000000003261557

JPLIA0802ZZ

Headlamp

Combination switch

IPDM E/R

BCM

High beam indicator lamp

Engine room (LH)

Behind the combination meter

On the combination meter

JPLIA0839ZZ

Revision: 2008 October

2009 Murano

EXL-10

< FUNCTION DIAGNOSIS >

[XENON TYPE]

HEADLAMP SYSTEM

Component Description

INFOID:0000000003261558

Part

Description

BCM

• Detects each switch condition by the combination switch reading function.
• Judges that the headlamp is turned ON according to the vehicle condition.
- Requests the headlamp relay (HI/LO) ON to IPDM E/R (with CAN communication).
- Requests the high beam indicator lamp ON to the combination meter (with CAN

communication).

IPDM E/R

Controls the integrated relay, and supplies voltage to the load according to the request
from BCM (with CAN communication).

Combination switch
(Lighting & turn signal switch)

Refer to

BCS-9, "System Diagram"

Combination meter
(High beam indicator lamp)

Turns the high beam indicator lamp ON according to the request from BCM (with CAN
communication).

Headlamp assem-
bly

• HID control unit
• Xenon bulb

Refer to

EXL-39, "Description"

High beam solenoid

Refer to

EXL-36, "Description"

Revision: 2008 October

2009 Murano

DAYTIME RUNNING LIGHT SYSTEM

EXL-11

< FUNCTION DIAGNOSIS >

[XENON TYPE]

EXL

DAYTIME RUNNING LIGHT SYSTEM

System Diagram

INFOID:0000000003415720

System Description

INFOID:0000000003415721

OUTLINE

• Turns the front fog lamp ON as the daytime running light.
• Daytime running light is controlled by daytime running light control function and combination switch reading

function of BCM, and relay control function of IPDM E/R.

DAYTIME RUNNING LIGHT OPERATION

• BCM detects the combination switch condition by the combination switch reading function.
• BCM detects the vehicle condition depending on the following signals.
- Engine condition signal (received from ECM with CAN communication)
- Parking brake switch signal (received from combination meter with CAN communication)
• BCM transmits the front fog light request signal to IPDM E/R with CAN communication according to the day-

time running light ON condition.

Daytime running light ON condition

- While the engine running with the parking brake released

Daytime running light OFF condition

- Engine stopped
- Headlamp ON (Passing included)
• IPDM E/R turns the integrated front fog lamp relay ON and turns the front fog lamp ON according to the front

fog light request signal.

JPLIA0803GB

Revision: 2008 October

2009 Murano

EXL-12

< FUNCTION DIAGNOSIS >

[XENON TYPE]

DAYTIME RUNNING LIGHT SYSTEM

Component Parts Location

INFOID:0000000003415722

Component Description

INFOID:0000000003415723

Daytime running light (Front fog lamp) 2.

Combination switch

ECM

IPDM E/R

BCM

Engine room (LH)

Behind the combination meter

JPLIA0841ZZ

Part

Description

BCM

• Detects each switch condition with the combination switch reading function.
• Judges the headlamp ON/OFF status according to the vehicle condition.
- Requests the front fog lamp relay ON to IPDM E/R (with CAN communication).

IPDM E/R

Controls the integrated relay and supplies voltage to the load according to the request
from BCM (with CAN communication).

Combination switch
(Lighting & turn signal switch)

Refer to

BCS-9, "System Diagram"

ECM

Transmits the engine condition signal to BCM with CAN communication.

Combination meter

Transmits the parking brake switch signal to BCM with CAN communication.

Revision: 2008 October

2009 Murano

AUTO LIGHT SYSTEM

EXL-13

< FUNCTION DIAGNOSIS >

[XENON TYPE]

EXL

AUTO LIGHT SYSTEM

System Diagram

INFOID:0000000003269347

System Description

INFOID:0000000003269348

OUTLINE

• Auto light system is controlled by each function of BCM and IPDM E/R.

Control by BCM

- Combination switch reading function
- Headlamp control function
- Auto light function
- Delay timer function

Control by IPDM E/R

- Relay control function
• Auto light system has the auto light function and the delay timer function.
- Auto light function turns the exterior lamps* and each illumination ON/OFF automatically according to the

outside brightness.

- When auto light system turns the exterior lamps ON with the ignition switch OFF, delay timer function turns

the exterior lamps OFF depending on the vehicle condition with the auto light function after a certain period
of time.

*: Headlamp (LO/HI), parking lamp, tail lamp, side marker lamp and front fog lamp (Headlamp HI and front fog
lamp depend on the combination switch condition.)

AUTO LIGHT FUNCTION

• BCM detects the combination switch condition with the combination switch reading function.
• BCM supplies voltage to optical sensor when the ignition switch is turned ON or ACC.
• Optical sensor converts outside brightness (lux) to voltage and transmits the optical sensor signal to BCM.
• BCM judges outside brightness from the optical sensor signal and judges ON/OFF condition of the exterior

lamp and each illumination according to the outside brightness.

• BCM transmits each request signal to IPDM E/R with CAN communication according to ON/OFF condition

by the auto light function.

NOTE:
ON/OFF timing differs based on the sensitivity from the setting. The setting can be set by CONSULT-III. Refer
to

EXL-24, "HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)"

DELAY TIMER FUNCTION

BCM turns the exterior lamp OFF depending on the vehicle condition with the auto light function when the igni-
tion switch is turned OFF.
• Turns the exterior lamp OFF 5 minutes after detecting that any door opens (Door switch ON).
• Turns the exterior lamp OFF a certain period of time* after closing all doors (Door switch ON

→

OFF).

JPLIA0804GB

Revision: 2008 October

2009 Murano

EXL-14

< FUNCTION DIAGNOSIS >

[XENON TYPE]

AUTO LIGHT SYSTEM

• Turns the exterior lamp OFF with the ignition switch ACC or the light switch OFF.
*: The preset time is 45 seconds. The timer operating time can be set by CONSULT-III. Refer to

EXL-24,

"HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)"

NOTE:
When any position other than the light switch AUTO is set, the auto light system function switches to the exte-
rior lamp battery saver function.

Component Parts Location

INFOID:0000000003269349

Component Description

INFOID:0000000003269350

Combination switch

Optical sensor

IPDM E/R

BCM

Instrument upper panel (RH)

Engine room (LH)

Behind the combination meter

JPLIA0840ZZ

Part

Description

BCM

• Detects each switch condition by the combination switch reading function.
• Judges the outside brightness from the optical sensor signal.
• Judges the OFF timing according to the vehicle condition.
• Judges the ON/OFF status of the exterior lamp and each illumination according to the

outside brightness and the vehicle condition.

- Requests ON/OFF of each relay to IPDM E/R (with CAN communication).

IPDM E/R

Controls the integrated relay, and supplies voltage to the load according to the request
from BCM (with CAN communication).

Combination switch
(Lighting & turn signal switch)

Refer to

BCS-9, "System Diagram"

Optical sensor

Refer to

EXL-52, "Description"

Revision: 2008 October

2009 Murano

FRONT FOG LAMP SYSTEM

EXL-15

< FUNCTION DIAGNOSIS >

[XENON TYPE]

EXL

FRONT FOG LAMP SYSTEM

System Diagram

INFOID:0000000003261293

System Description

INFOID:0000000003261294

OUTLINE

Front fog lamp is controlled by combination switch reading function and front fog lamp control function of BCM,
and relay control function of IPDM E/R.

FRONT FOG LAMP OPERATION

• BCM detects the combination switch condition by the combination switch reading function.
• BCM transmits the front fog light request signal to IPDM E/R with CAN communication according to the front

fog lamp ON condition.

Front fog lamp ON condition

- Front fog lamp switch ON with headlamp ON (except for the high beam ON)
• IPDM E/R turns the integrated front fog lamp relay ON, and turns the front fog lamp ON according to the

front fog light request signal.

JPLIA0004GB

Revision: 2008 October

2009 Murano

EXL-16

< FUNCTION DIAGNOSIS >

[XENON TYPE]

FRONT FOG LAMP SYSTEM

Component Parts Location

INFOID:0000000003261295

Component Description

INFOID:0000000003261296

Front fog lamp

Combination switch

IPDM E/R

BCM

Engine room (LH)

Behind the combination meter

JPLIA0843ZZ

Part

Description

BCM

• Detects each switch condition by the combination switch reading function.
• Judges the front fog lamp ON/OFF status according to the vehicle condition.
- Requests the front fog lamp relay ON to IPDM E/R (with CAN communication).

IPDM E/R

Controls the integrated relay and supplies voltage to the load according to the request
from BCM (with CAN communication).

Combination switch
(Lighting & turn signal switch)

Refer to

BCS-9, "System Diagram"

Revision: 2008 October

2009 Murano

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM

EXL-17

< FUNCTION DIAGNOSIS >

[XENON TYPE]

EXL

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM

System Diagram

INFOID:0000000003261297

System Description

INFOID:0000000003261298

OUTLINE

Turn signal lamp and the hazard warning lamp is controlled by combination switch reading function and the
flasher control function of BCM.

TURN SIGNAL LAMP OPERATION

• BCM detects the combination switch condition by the combination switch reading function.
• BCM supplies voltage to the right (left) turn signal lamp circuit when the ignition switch is turned ON and the

turn signal switch is in the right (left) position. BCM blinks the turn signal lamp.

HAZARD WARNING LAMP OPERATION

BCM supplies voltage to both turn signal lamp circuit when the hazard switch is turned ON. BCM blinks the
hazard warning lamp.

TURN SIGNAL INDICATOR LAMP AND TURN SIGNAL SOUND OPERATION

• BCM transmits the turn indicator signal to the combination meter with CAN communication while the turn sig-

nal lamp and the hazard warning lamp are operating.

• Combination meter outputs the turn signal sound with the integrated buzzer while blinking the turn signal

indicator lamp according to the turn indicator signal.

HIGH FLASHER OPERATION (FAIL-SAFE)

• BCM detects the turn signal lamp circuit status by the terminal current value.
• BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn sig-

nal lamp operating.
NOTE:
The blinking speed is normal while operating the hazard warning lamp.

JPLIA0180GB

Revision: 2008 October

2009 Murano

EXL-18

< FUNCTION DIAGNOSIS >

[XENON TYPE]

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEM

Component Parts Location

INFOID:0000000003261299

Component Description

INFOID:0000000003261300

Hazard switch

Front turn signal lamp

Combination switch

Rear turn signal lamp

BCM

Turn signal indicator lamp

Behind the combination meter

On the combination meter

JPLIA0844ZZ

Part

Description

BCM

• Detects each switch condition by the combination switch reading function.
• Judges the blinks of the turn signal lamp and the hazard warning lamp from each

switch status. The applicable turn signal lamp blinks.

- Requests the turn signal indicator lamp blink to the combination meter (with CAN

communication).

Combination switch
(Lighting & turn signal switch)

Refer to

BCS-9, "System Diagram"

Hazard switch

Inputs the hazard switch ON/OFF signal to BCM.

Combination meter
(Turn signal indicator lamp & buzzer)

Blinks the turn signal indicator lamp and outputs the turn signal operating sound with
integrated buzzer according to the request from BCM (with CAN communication).

Revision: 2008 October

2009 Murano

PARKING, LICENSE PLATE AND TAIL LAMPS SYSTEM

EXL-19

< FUNCTION DIAGNOSIS >

[XENON TYPE]

EXL

PARKING, LICENSE PLATE AND TAIL LAMPS SYSTEM

System Diagram

INFOID:0000000003261301

System Description

INFOID:0000000003261302

OUTLINE

Parking, license plate, side marker and tail lamps are controlled by combination switch reading function and
headlamp control function of BCM, and relay control function of IPDM E/R.

PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS OPERATION

• BCM detects the combination switch condition by the combination switch reading function.
• BCM transmits the position light request signal to IPDM E/R and the combination meter with CAN communi-

cation according to the ON/OFF condition of the parking, license plate, side marker and tail lamps.

Parking, license plate, side marker and tail lamps ON condition

- Lighting switch 1ST
- Lighting switch 2ND
• IPDM E/R turns the integrated tail lamp relay ON and turns the parking lamp, license plate, side marker and

tail lamps ON according to the position light request signal.

• Combination meter turns the tail lamp indicator lamp ON according to the position light request signal.

JPLIA0805GB

Revision: 2008 October

2009 Murano

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