Nissan Quest E52. Instruction — part 783

INL-12

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM DIAGRAM (WITHOUT AUTOMATIC SLIDE DOOR)

OUTLINE

• Interior room lamp battery saver is controlled by BCM.
• BCM turns applicable lamps OFF depending on the vehicle condition. This function prevents the battery

from over-discharging if the driver neglects turning OFF the any lamps.

Applicable lamps

• Map lamp
• Personal lamp
• Luggage room lamp
• Automatic back door close switch illumination
• Step lamp
• Vanity mirror lamp

INTERIOR ROOM LAMP BATTERY SAVER FUNCTION

• When the ignition switch is turned to a position other than ON, BCM operates the timer for a period of time to

cut the interior room lamp power supply.

• BCM restart the timer when any of the following signals changes while operating the timer.
- Ignition switch status
- Door switch signal (ALL)
- Door lock/unlock signal (remote keyless entry receiver, each door request switch, door lock and unlock

switch, door key cylinder switch)

• BCM provides the interior room lamp power supply continuously when the ignition switch position is ON.
NOTE:
Each function of interior room lamp battery saver can be set by CONSULT. Refer to

INL-22, "BATTERY

SAVER : CONSULT Function (BCM - BATTERY SAVER)"

.

JMLIA2209GB

SYSTEM

INL-13

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INTERIOR ROOM LAMP BATTERY SAVER SYSTEM : Circuit Diagram

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JMLIA2125GB

INL-14

< SYSTEM DESCRIPTION >

SYSTEM

ILLUMINATION CONTROL SYSTEM

JMLIA2128GB

SYSTEM

INL-15

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ILLUMINATION CONTROL SYSTEM : System Description

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SYSTEM DIAGRAM

OUTLINE

Each illumination lamp is controlled by each function of BCM, IPDM E/R and combination meter.

Control by BCM

• Combination switch reading function
• Headlamp control function

Control by IPDM E/R

• Relay control function

Control by combination meter

• Meter illumination control function (Refer to

MWI-17, "METER ILLUMINATION CONTROL : System Descrip-

tion"

.)

ILLUMINATION CONTROL

• BCM detects the combination switch condition by the combination switch reading function.
• BCM transmits position light request signal to IPDM E/R and combination meter according to tail lamp ON

condition.

Tail lamp ON condition

- Lighting switch 1ST
- Lighting switch 2ND
- Lighting switch AUTO, and the auto light function ON judgment
- Lighting switch AUTO, with the front fog lamp switch ON and the ignition switch ON
• IPDM E/R turns the integrated tail lamp relay ON according to position light request signal. It provides the

power supply to each illumination lamp.

• Combination meter enters in the nighttime mode according to position light request signal. Under the night-

time mode the combination meter controls the illuminance by controlling each illumination lamp (ground
side).

JMLIA2210GB