Nissan Xterra. Manual - part 380

EXL-8

< SYSTEM DESCRIPTION >

HEADLAMP

Component Description

INFOID:0000000009484848

1.

IPDM E/R E122, E123, E124

2.

BCM M18, M20 (view with lower instru-
ment panel LH removed)

3.

Combination switch (lighting and turn 
signal switch) M28

4.

Combination meter M24

Part name

Description

BCM

• Receives combination switch (lighting and turn signal switch) 

request via BCM combination switch reading function.

• Sends headlamp high/low request signal to the IPDM E/R.

IPDM E/R

Activates the headlamp high and headlamp low relays upon re-
quest from the BCM.

Combination switch (lighting and turn signal switch)

Outputs lighting requests to the BCM.

DAYTIME RUNNING LIGHT SYSTEM

EXL-9

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

DAYTIME RUNNING LIGHT SYSTEM

System Diagram

INFOID:0000000009484849

System Description

INFOID:0000000009484850

The headlamp system for Canada vehicles is equipped with a daytime light control that activates the high

beam headlamps at approximately half illumination whenever the engine is operating. If the parking brake is

applied before the engine is started the daytime lights will not be illuminated. The daytime lights will illuminate

once the parking brake is released. Thereafter, the daytime lights will continue to operate when the parking

brake is applied.

OPERATION

The BCM monitors inputs from the parking brake switch and the combination switch (lighting and turn signal

switch) to determine when to activate the daytime light system. The BCM sends a daytime light request to the

IPDM E/R via the CAN communication lines. The IPDM E/R grounds the daytime light relay 1 which in turn,

provides power to the ground side of the LH high beam lamp. Power flows backward through the LH high

beam lamp to the IPDM E/R, through the high beam fuses, through the RH high beam lamp circuit to the RH

high beam lamp and on to ground. The high beam lamps are wired in series which causes them to illuminate

at a reduced intensity. 

AWLIA2079GB

EXL-10

< SYSTEM DESCRIPTION >

DAYTIME RUNNING LIGHT SYSTEM

Component Parts Location

INFOID:0000000009484851

Component Description

INFOID:0000000009484852

1.

IPDM E/R E119, E122, E123, E124

2.

Parking brake switch B84

3.

BCM M18, M20 (view with lower instru-
ment panel LH removed)

4.

ECM E16 (view with ECM cover re-
moved)

5.

Generator E205, E209

6.

Daytime light relay 1 E103

7.

Daytime light relay 2 E104

8.

Combination switch (lighting and turn 
signal switch) M28

9.

Combination meter M24

WKIA4958E

Part name

Description

BCM

• Receives combination switch (lighting and turn signal switch) 

inputs via BCM combination switch reading function.

• Receives park brake applied input from the park brake switch.
• Receives engine running status from the ECM via CAN com-

munication. 

IPDM E/R

Receives daytime light request from the BCM and activates the 
daytime light relay.

Combination switch (lighting and turn signal switch)

Outputs lighting requests to the BCM.

DAYTIME RUNNING LIGHT SYSTEM

EXL-11

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

Parking brake switch

Outputs parking brake status to the combination meter which for-
wards that information to the BCM via CAN communication.

ECM

Outputs engine running status to the BCM.