Nissan Murano. Manual - part 649

EXL-8

< BASIC INSPECTION >

[XENON TYPE]

DIAGNOSIS AND REPAIR WORK FLOW

Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check according to 

GI-44, "Intermittent Incident"

.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

HEADLAMP SYSTEM

EXL-9

< SYSTEM DESCRIPTION >

[XENON TYPE]

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SYSTEM DESCRIPTION

HEADLAMP SYSTEM

System Diagram

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System Description

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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

EXL-10

< SYSTEM DESCRIPTION >

[XENON TYPE]

HEADLAMP SYSTEM

• 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

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JPLIA0802ZZ

1.

Headlamp

2.

Combination switch

3.

IPDM E/R

4.

BCM

5.

High beam indicator lamp

A.

Engine room (LH)

B.

Behind the combination meter

C.

On the combination meter

JPLIA0839ZZ

HEADLAMP SYSTEM

EXL-11

< SYSTEM DESCRIPTION >

[XENON TYPE]

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Component Description

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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-10, "System Description"

.

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"

.