Infiniti G37 Coupe. Manual - part 793

INL-6

< FUNCTION DIAGNOSIS >

INTERIOR ROOM LAMP CONTROL SYSTEM

• The interior room lamp turns ON and OFF (gradual brightening and dimming) by the interior room timer.
• BCM judges the vehicle condition with the following items. It activates the interior room timer.
- Ignition switch status
- Door switch signal (ALL)
- Door lock/unlock signal (Remote keyless entry receiver, each request switch, key cylinder lock/unlock

switch, central door lock/unlock switch)

NOTE:
Each function of interior room lamp timer can be set by CONSULT-III. Refer to 

INL-16, "INT LAMP : CON-

SULT-III Function (BCM - INT LAMP)"

.

Interior Room Lamp ON Operation

• BCM always turns the interior room lamp ON when any door opens.
• BCM activates the interior room timer in any of the following conditions to turn the interior room lamp ON for

a period of time.

- Any door opens before all doors close.
- Ignition switch is turned ON 

→

 OFF.

- Any door unlock signal is detected when all doors close with ignition switch OFF. 
NOTE:
Restart the timer if new condition is input during the timer operating time.

Interior Room Lamp OFF Operation

BCM stops the timer in any of the following conditions to turns the interior room lamp OFF.
• The timer operating time is expired.
• Ignition switch position is other than OFF with all doors close.
• Any door lock operation is detected with all doors close.

TRUNK ROOM LAMP CONTROL

BCM controls the trunk room lamp (ground-side) to turn ON with the trunk room lamp switch ON.

STEP LAMP CONTROL

BCM controls the step lamp (ground-side) to turn ON with any door switch ON.

PUSH-BUTTON IGNITION SWITCH ILLUMINATION CONTROL

Push-button Ignition Switch Illumination Basic Operation

• BCM provides the power supply and the ground to turn the push-button ignition switch illumination ON.
• BCM cuts the ground supply while the each illumination (tail lamp) ON. BCM switches to the ground control

with the meter illumination control function.

Push-button Ignition Switch Illumination ON Operation

BCM turns the push-button ignition switch illumination ON in the following conditions.
• Ignition switch ON
• Each illumination (tail lamp) ON
• Any of the following conditions with ignition switch OFF
- Engine start permission is entered.
- Intelligent Key inserted into the key slot. 
- Driver door is LOCK 

→

 UNLOCK.

- Driver door is open.

Push-button Ignition Switch Illumination OFF Operation

BCM turns the push-button ignition switch illumination OFF in any of the following conditions.
• The push-button ignition switch illumination ON conditions do not satisfy.
• All of the following conditions with ignition switch OFF
- Each illumination (tail lamp) OFF
- The push-button ignition switch illumination ON conditions do not change (15 seconds after the ignition

switch OFF) or the driver door is UNLOCK 

→

 LOCK.

INTERIOR ROOM LAMP CONTROL SYSTEM

INL-7

< FUNCTION DIAGNOSIS >

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Component Parts Location

INFOID:0000000001604812

1.

Key cylinder switch

2.

Request switch

3.

Step lamp

4.

Door switch

5.

Door lock and unlock switch

6.

Push-button ignition switch
(Push-button ignition switch illumi-
nation)

7.

Map lamp

8.

Remote keyless entry receiver

9.

BCM

10. Trunk room lamp switch

11. Trunk room lamp

A.

Behind glove box

B.

Dash side lower (Passenger side)

C.

Trunk lid lock assembly

D.

Trunk room upward

JPLIA0589ZZ

INL-8

< FUNCTION DIAGNOSIS >

INTERIOR ROOM LAMP CONTROL SYSTEM

Component Description

INFOID:0000000001604813

Part

Description

BCM

• Activates the interior room lamp timer depending on the vehicle condition to turn the 

interior room lamp ON/OFF.

• Turns the trunk room lamp ON /OFF according to the trunk room lamp switch status.
• Turns the step lamp ON /OFF according to any door switch status.

Remote keyless entry receiver

Transmits the lock/unlock signal to BCM.

• Door lock and unlock switch
• Key cylinder switch

Transmits a switch signal by power window switch serial link.

• Request switch
• Door switch

Inputs a switch signal to BCM.

INTERIOR ROOM LAMP BATTERY SAVER SYSTEM

INL-9

< FUNCTION DIAGNOSIS >

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INTERIOR ROOM LAMP BATTERY SAVER SYSTEM

System Diagram

INFOID:0000000001604814

System Description

INFOID:0000000001604815

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 neglect turning OFF the any lamps.

Applicable lamps

• Map lamp
• Step lamp
• Trunk room lamp
• Vanity mirror lamp

INTERIOR ROOM LAMP BATTERY SAVER FANCTION

• When the ignition switch is turned OFF, 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 request switch, key cylinder lock/unlock

switch, central door lock/unlock switch)

- Trunk loom lamp switch signal
- Key switch signal (Key slot)
• BCM provides the interior room lamp power supply continuously when the ignition switch position is other

than OFF.

NOTE:
Each function of interior room lamp battery saver can be set by CONSULT-III Refer to 

INL-17, "BATTERY

SAVER : CONSULT-III Function (BCM - BATTERY SAVER)"

.

JSLIA0134GB