Nissan X-Trail 32. Instruction — part 1141

SYSTEM

EXL-21

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

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SYSTEM

HEADLAMP SYSTEM

HEADLAMP SYSTEM : System Description

INFOID:0000000010788747

SYSTEM DIAGRAM

OUTLINE

Headlamp is controlled by combination switch reading function and headlamp control function of BCM, and
smart FET control function of IPDM E/R.

HEADLAMP (LO) OPERATION

• BCM detects the combination switch condition with the combination switch reading function.
• BCM transmits the low beam request signal to IPDM E/R and the combination meter with CAN communica-

tion according to the headlamp (LO) ON condition.

Headlamp (LO) ON condition (When any of the following conditions are satisfied)

- Lighting switch 2ND
- Lighting switch AUTO (Only when the illumination judgment by auto light system is ON. For details, refer to

EXL-24, "AUTO LIGHT SYSTEM : System Description"

.)

- Lighting switch PASS
• IPDM E/R turns the integrated smart FET ON according to low beam request signal and supplies power sup-

ply to LED headlamp control module.

• LED headlamp control module turns the headlamp (LO) ON according to the power supply from IPDM E/R.
• Combination meter turns the dipped beam indicator lamp ON according to the low beam request signal.

HEADLAMP (HI) OPERATION

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

tion according to the headlamp (HI) ON condition.

Headlamp (HI) ON condition (When any of the following conditions are satisfied)

- Lighting switch HI with the lighting switch 2ND
- Lighting switch HI with the lighting switch AUTO (Only when the illumination judgment by auto light system is

ON and the illumination judgment by high beam assist system is ON. For details, refer to

EXL-24, "AUTO

LIGHT SYSTEM : System Description"

.)

- Lighting switch PASS

JMLIA5227GB

EXL-22

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

SYSTEM

• IPDM E/R turns the integrated headlamp high smart FET ON according to high beam request signal and

supplies power supply to LED headlamp control module.

• LED headlamp control module turns the headlamp (HI) ON according to the power supply from IPDM E/R.
• Combination meter turns the high beam indicator lamp ON according to the high beam request signal.

HEADLAMP WARNING OPERATION

Headlamp warning warns the driver that there is a malfunction in LED headlamp system. Refer to

EXL-49,

"INFORMATION DISPLAY (COMBINATION METER) : Headlamp Warning"

.

FOLLOW ME HOME FUNCTION

When the driver is moving to the house entrance from the own vehicle, headlamp is kept still ON by the follow
me home function of BCM.
• When BCM detects the input of lighting switch PASS while all of the following conditions are satisfied, it

transmits the low beam request signal for a period of time to IPDM E/R and the combination meter through
CAN communication.

Follow me home ON condition (When all of the following conditions are satisfied)

- Ignition switch OFF
- Lighting switch OFF or AUTO
• IPDM E/R turns the integrated smart FET ON according to low beam request signal and supplies power sup-

ply to LED headlamp control module.

• LED headlamp control module turns the headlamp (LO) ON according to the power supply from IPDM E/R.
• Combination meter turns the dipped beam indicator lamp ON according to the low beam request signal.
• When in any of following conditions, follow me home function can be cancelled while follow me home func-

tion is operating.

Follow me home OFF condition (When any of the following conditions are satisfied)

- Ignition switch other than OFF
- Lighting switch other than OFF or AUTO
- Follow me home operating time is expired
NOTE:
• Flash-to-pass operation illumination time for 1 time can be extended to approximately 30 seconds during

operation of follow me home function.

• Flash-to-pass operation can be illuminated continuously for approximately 60 seconds (flash-to-pass opera-

tion, 2 times), approximately 90 seconds (flash-to-pass operation, 3 times), and a maximum of approxi-
mately 120 seconds (flash-to-pass operation, 4 times).

SYSTEM

EXL-23

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

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HEADLAMP SYSTEM : Circuit Diagram

INFOID:0000000010788748

HEADLAMP SYSTEM : Fail-safe

INFOID:0000000010788749

FAIL-SAFE CONTROL BY DTC

IPDM E/R performs fail-safe control when any DTC are detected.

JMLIA5344GB

EXL-24

< SYSTEM DESCRIPTION >

[LED HEADLAMP]

SYSTEM

CAN COMMUNICATION CONTROL

When CAN communication with BCM is impossible, IPDM E/R performs fail-safe control. After CAN communi-
cation recovers normally, it also returns to normal control.

If No CAN Communication Is Available With BCM

AUTO LIGHT SYSTEM

AUTO LIGHT SYSTEM : System Description

INFOID:0000000011008903

SYSTEM DIAGRAM

OUTLINE

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

DTC

CONSULT display description

Fail-safe

B20CE

HL (HI) LH PWR SPLY CIRC

[CIRC
SHORT TO
GRND]

Shuts off the power supply to the headlamp (HI) LH power
supply circuit until the headlamp (HI) ON conditions are
no longer satisfied.

B20CF

HL (HI) RH PWR SPLY CIRC

[CIRC
SHORT TO
GRND]

Shuts off the power supply to the headlamp (HI) RH pow-
er supply circuit until the headlamp (HI) ON conditions are
no longer satisfied.

B20D0

HL (LO) LH PWR SPLY CIRC

[CIRC
SHORT TO
GRND]

Shuts off the power supply to the headlamp (LO) LH pow-
er supply circuit until the headlamp (LO) ON conditions
are no longer satisfied.

B20D1

HL (LO) RH PWR SPLY CIRC

[CIRC
SHORT TO
GRND]

Shuts off the power supply to the headlamp (LO) RH pow-
er supply circuit until the headlamp (LO) ON conditions
are no longer satisfied.

B20E2

LED HEADLAMP RH

[CMPNENT
INTERNAL
MLFNCTN]

Transmits the headlamp warning signal (CAN communi-
cation) to the combination meter when the headlamp (LO)
ON conditions are satisfied. (When the ignition switch
turns ON, the headlamp warning is displayed on the infor-
mation display of the combination meter.)

B20E3

LED HEADLAMP LH

[CMPNENT
INTERNAL
MLFNCTN]

Transmits the headlamp warning signal (CAN communi-
cation) to the combination meter when the headlamp (LO)
ON conditions are satisfied. (When the ignition switch
turns ON, the headlamp warning is displayed on the infor-
mation display of the combination meter.)

Control part

Fail-safe operation

Headlamp

• Turns ON the headlamp (LO) when the ignition switch is turned ON.
• Turns OFF the headlamp (LO) when the ignition switch is turned OFF.
• Headlamp (HI): OFF

JMLIA5228GB