Nissan Titan A60. Manual - part 489

DAYTIME RUNNING LIGHT SYSTEM

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< SYSTEM DESCRIPTION >

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DAYTIME RUNNING LIGHT SYSTEM

System Diagram

INFOID:0000000006178991

System Description

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The headlamp system for Canada vehicles is equipped with a daytime light relay 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.

Component Parts Location

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AWLIA1751GB

ALLIA0380ZZ

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< SYSTEM DESCRIPTION >

DAYTIME RUNNING LIGHT SYSTEM

Component Description

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After starting the engine with the parking brake released and the combination switch (lighting and turn signal

switch) in the OFF or 1ST position, the headlamp high beam automatically turns on at a reduced intensity.

With the combination switch (lighting and turn signal switch) in the 2nd position or with autolamps ON, the

headlamps function the same as conventional light systems.

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 which in turn, pro-

vides 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. 

1.

IPDM E/R E119, E122, E123, E124

2.

Parking brake switch M11

3.

BCM M18, M20 (view with instrument 
panel removed)

4.

Daytime running light relay E103

5.

Combination switch (lighting and turn 
signal switch) M28

6.

Combination meter M24

FRONT FOG LAMP

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< SYSTEM DESCRIPTION >

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FRONT FOG LAMP

System Diagram

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System Description

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The front fog lamps are activated with the combination switch (lighting and turn signal switch). The combina-

tion switch (lighting and turn signal switch) signal to the BCM is monitored with the BCM combination switch

reading function. When the fog lamps are turned ON with the combination switch (lighting and turn signal

switch), the BCM sends a front fog lamp request signal via CAN communication lines to the IPDM E/R. The

IPDM E/R grounds the front fog lamp relay coil to activate the front fog lamps.

Component Parts Location

INFOID:0000000006178997

Component Description

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FRONT FOG LAMP OPERATION

When the combination switch (lighting and turn signal switch) is in front fog lamp ON position and also in 1ST

or 2ND position or AUTO position (headlamp is ON), the BCM detects FR FOG ON and the HEAD LAMP1, 2

ON or the AUTO LIGHT ON. The BCM sends a front fog lamp request ON signal via the CAN communication

lines to the IPDM E/R. The IPDM E/R then turns ON the front fog lamp relay sending power to the front fog

lamps.

AWLIA1719GB

1.

BCM M18, M20 (view with instrument 
panel removed)

2.

IPDM E/R E122, E123, E124

3.

Combination switch (lighting and turn 
signal switch) M28

ALLIA0383ZZ

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< SYSTEM DESCRIPTION >

TURN SIGNAL AND HAZARD WARNING LAMPS

TURN SIGNAL AND HAZARD WARNING LAMPS

System Diagram

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System Description

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TURN SIGNAL OPERATION

When the combination switch (lighting and turn signal switch) is in LH or RH position with the ignition switch in

ON position, the BCM detects the TURN RH or TURN LH ON request. The BCM outputs the flasher signal to

the respective turn signal lamp. The BCM also sends a turn indicator signal ON request via the CAN commu-

nication lines to the combination meter. The combination meter then activates the appropriate turn signal indi-

cator and audible buzzer.

HAZARD LAMP OPERATION

When the hazard switch is in ON position, the BCM detects the hazard switch signal ON. The BCM outputs the

flasher signal (right and left). The BCM sends a hazard indicator signal ON request via the CAN communica-

tion lines to the combination meter. The combination meter then activates the hazard indicator and audible

buzzer.

REMOTE KEYLESS ENTRY OPERATION

The remote keyless entry receiver transmits a hazard request signal to the BCM, then BCM controls hazard

lamps.

Refer to 

DLK-14, "REMOTE KEYLESS ENTRY : System Diagram"

.

Component Parts Location

INFOID:0000000006179001

AWLIA1721GB

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