Nissan Altima HL32 Hybrid. Manual - part 403

EXL-12

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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 

BCS-22, "HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)"

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AUTO LIGHT SYSTEM

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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 depending on the following condition.

• It turns ON applicable lamps in 3 seconds when ambient brightness is less than 1250 lux.

• The lighted lamps are turned OFF in 5 seconds when ambient brightness becomes 2500 lux or higher.

Releasing Function:

• Turn ignition switch to the OFF position, or

• Change lighting switch to the OFF, 1ST, 2ND position.

NOTE:

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

BCS-22,

"HEADLAMP : CONSULT-III Function (BCM - HEAD LAMP)"

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COMBINATION SWITCH READING FUNCTION

Refer to 

BCS-10, "System Description"

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HEADLAMP LOW AND HIGH OPERATION 

Refer to 

EXL-7, "System Description"

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FRONT FOG LAMP OPERATION

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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< FUNCTION DIAGNOSIS >

AUTO LIGHT SYSTEM

Refer to 

EXL-15, "System Description"

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PARKING, LICENSE PLATE AND TAIL LAMPS OPERATION

Refer to 

EXL-19, "System Description"

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FRONT FOG LAMP

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FRONT FOG LAMP

System Diagram

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System Description

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• BCM (Body Control Module) controls front fog lamp operation.

• IPDM E/R (Intelligent Power Distribution Module Engine Room) operates front fog lamp according to CAN

communication signals from BCM.

• Combination meter operates front fog lamp indicator according to inputs via the CAN communication lines.

Component Parts Location

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1.

IPDM E/R E17, E18, E200

2.

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

3.

Combination switch M28

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