Nissan Altima L32. Manual - part 682

EXL-12

< FUNCTION DIAGNOSIS >

DAYTIME RUNNING LIGHT SYSTEM

Component Parts Location

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1.

IPDM E/R E17, E18, E200, E201

2.

BCM M16,M17, M18, M19 (view with 
instrument panel removed)

3.

Combination switch M28

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DAYTIME RUNNING LIGHT SYSTEM

EXL-13

< FUNCTION DIAGNOSIS >

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Component Description

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After starting the engine with the parking brake released and the lighting switch in the OFF or 1ST position, the

headlamp high beam automatically turns on. With the lighting 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 to determine when to acti-

vate the daytime light system.  The BCM sends a daytime light request to the IPDM E/R via the CAN commu-

nication lines.  The IPDM E/R grounds the daytime light relay which in turn, provides power to the ground side

of the RH high beam lamp.  Power flows backward throught the RH high beam lamp to the IPDM E/R, through

the high beam fuses, through the LH high beam lamp circuit to the LH high beam lamp and on to ground.  The

high beam lamps are wired in series which causes them to illuminate at a reduced intensity. 

• Hi: "HIGH BEAM" position
• Lo: "LOW BEAM" position
• P: "FLASH TO PASS" position
•

×: Lamp "ON"

• –: Lamp "OFF"
• z: Lamp dims. (Added functions)
• *: When starting the engine with the parking brake released, the daytime lights will operate.

When starting the engine with the parking brake applied, the daytime lights will not operate.

4.

Combination meter M24

5.

Daytime running light relay E228

6.

Parking brake switch
E35 (coupe with CVT)
M73 (with M/T)

7.

Parking brake switch E35 (sedan with 
CVT)

Engine 

With engine stopped 

With engine running 

Lighting switch 

OFF 1ST 2ND OFF 1ST 2ND 

Hi

Lo

P

Hi

Lo

P

Hi

Lo

P

Hi

Lo

P

Hi

Lo

P

Hi

Lo

P

Headlamp 

High  beam 

–

–

–

–

–

×

×

–

×

z

*

z

*

×

z

*

z

*

×

×

–

×

Low  beam 

–

–

–

–

–

×

×

×

×

–

–

×

–

–

×

×

×

×

Tail lamp 

–

–

–

×

×

×

×

×

×

–

–

–

×

×

×

×

×

×

License and instrument illumina-
tion lamp 

–

–

–

×

×

×

×

×

×

–

–

–

×

×

×

×

×

×

EXL-14

< FUNCTION DIAGNOSIS >

AUTO LIGHT SYSTEM

AUTO LIGHT SYSTEM

System Diagram

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System Description

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• BCM (Body Control Module) controls auto light operation according to signals from optical sensor, lighting

switch and ignition switch.

• IPDM E/R (Intelligent Power Distribution Module Engine Room) operates parking, license plate, tail, front fog

lamps and headlamps according to CAN communication signals from BCM.

• Optical sensor detects ambient brightness of 800 to 2,500 lux. And optical sensor converts light (lux) to volt-

age, then sends the optical sensor signal to BCM.

OUTLINE

The auto light control system has an optical sensor that detects outside brightness.

When the lighting switch is in AUTO position, it automatically turns ON/OFF the parking, license plate, tail,

front fog lamps and headlamps in accordance with the ambient light. Sensitivity can be adjusted in four steps.

For the details of the setting, Refer to 

EXL-26, "COMMON ITEM : CONSULT-III Function"

.

AWLIA0011GB

AUTO LIGHT SYSTEM

EXL-15

< FUNCTION DIAGNOSIS >

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Component Parts Location

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Component Description

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AUTO LIGHT OPERATION

Applicable lamps

• Low beam headlamp

• Parking, license plate and tail lamps

• High beam headlamp (with the lighting switch in HIGH BEAM position)

• Front fog lamp (with the lighting switch in front fog lamp ON position)

When the lighting switch is in AUTO position with the ignition switch in ON position, BCM detects the AUTO

LIGHT (ON) by BCM combination switch reading function. BCM turns automatically ON/OFF the applicable

lamps according to ambient brightness.

NOTE:

Timing for when lamps turn ON/OFF can be changed by the function setting of CONSULT-III. Refer to 

EXL-26,

"COMMON ITEM : CONSULT-III Function"

.

1.

IPDM E/R E17, E18, E200

2.

BCM M16, M17, M18, M19, M21 (view 
with instrument panel removed)

3.

Combination switch M28

4.

Optical sensor M66

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