Courtesy Lamp: Description and Operation

INTERIOR ROOM LAMP

System Description
When map lamp switch is in DOOR position, map lamp ON/OFF is controlled by timer according to signals from switches including key switch, front door switch driver side, unlock signal from keyfob, door lock and unlock switch, key cylinder lock and unlock switch, ignition switch.

When map lamp turns ON, there is a gradual brightening over 1 second. When map lamp turns OFF, there is a gradual dimming over 1 second.

The map lamp timer is controlled by the BCM (body control module).

Map lamp timer control settings can be changed with CONSULT-II.

Ignition keyhole illumination turns ON at time when driver door is opened (door switch ON) or removed keyfob from key cylinder. Illumination turns OFF when driver door is closed (door switch OFF).

Step lamp turns ON at time when driver door or passenger door is opened (door switch ON). Lamp turns OFF when driver, passenger doors are closed (all door switches OFF).

POWER SUPPLY AND GROUND
Power is supplied at all times
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to key switch terminal 2.
- through 50 A fusible link [letter F, located in the fuse and fusible link box]
- to BCM (body control module) terminal 7.

When the key is removed from ignition key cylinder, power is interrupted
- through key switch terminal 1
- to BCM (body control module) terminal 62.

With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No. 1, located in the fuse block (J/B)]
- to BCM (body control module) terminal 35.

Ground is supplied:
- to BCM (body control module) terminal 8
- through grounds terminals E17 and E43

When the driver side door is opened, ground is supplied
- through case ground of door switch driver side
- to BCM (body control module) terminal 14.

When the passenger side door is opened, ground is supplied
- through case ground of door switch passenger side
- to BCM (body control module) terminal 10.

When the driver side door is unlocked by the door lock and unlock switch, BCM (body control module) receives a ground signal
- through grounds terminals M30 and M66
- to power window main switch terminal 15 (door lock and unlock switch) or power window sub-switch terminal 11 (door lock and unlock switch)
- from power window main switch terminal 12 (door lock and unlock switch) or power window sub-switch terminal 16 (front passenger side)
- to BCM (body control module) terminal 74

When the front driver side door is unlocked by the driver side door lock assembly (door key cylinder switch), BCM (body control module) receives a ground signal
- through grounds M30 and M66
- to driver side door lock assembly (door key cylinder switch) terminal 5
- from driver side door lock assembly (door key cylinder switch) terminal 6
- to power window main switch terminal 7 (door lock and unlock switch)
- from power window main switch terminal 7 (door lock and unlock switch)
- to BCM (body control module) terminal 74

When a signal or combination of signals is received by BCM (body control module) ground is supplied
- through BCM (body control module) terminal 32
- to map lamp terminal 2.

With power and supplied, the interior lamp illuminates.

SWITCH OPERATION
When driver door switch is ON (door is opened), ground is supplied
- through BCM terminal 34
- to ignition keyhole illumination terminal 2.

And power is supplied
- from BCM terminal 24
- to ignition keyhole illumination terminal 1.

When any door switch is ON (door is opened), ground is supplied
- through BCM terminal 33
- to step lamp driver side and passenger side terminal 2.

And power is supplied from BCM terminal 24
- to step lamp driver side and passenger side terminal 1.

When map lamp switch is ON, ground is supplied
- through grounds M30 and M66
- to map lamp terminal 1.

And power is supplied
- from BCM terminal 24
- to map lamp terminal 3.

When vanity mirror lamp (driver side and passenger side) is ON, ground is supplied:
- through grounds M30 and M66
- to vanity mirror lamp (driver side and passenger side) terminal 2.

And power is supplied
- from BCM terminal 24
- to vanity mirror lamp (driver side and passenger side) terminal 1.

MAP LAMP TIMER OPERATION
When map lamp switch is in DOOR position, and when all conditions are met, BCM performs timer control (maximum 30 seconds) for map lamp ON/OFF.

In addition, when spot turns ON or OFF there is gradual brightening or dimming over 1 second.

Power is supplied
- to 10 A fuse [No. 21 (located in the fuse block (J/B)]
- through key switch terminal 2.

When all doors are closed (all door switches OFF) and key is removed from key cylinder (key switch OFF), power will not be supplied to BCM terminal 62.

Ground is supplied
- from BCM terminal 74
- to power window main switch (door lock and unlock switch) terminal 15.

At this time, BCM detects that driver door is unlocked. It determines that map lamp timer operation conditions are met, and turns the map lamp ON for 30 seconds.

When all doors are closed (all door switches OFF) and key is in key cylinder (key switch ON),

Power is supplied
- through key switch terminal 1
- to BCM terminal 62.

When key is removed from key switch (key switch OFF), power supply to BCM terminal 62 is terminated. BCM detects that key has been removed, determines that map lamp timer conditions are met, and turns the map lamp ON for 30 seconds.

When driver door opens closes, and the key is not inserted in the key switch (key switch OFF), BCM terminal 14 changes between 0V (door open) 12V (door closed). The BCM determines that conditions for map lamp operation are met and turns the interior lamp ON for 30 seconds.

Timer control is canceled under the following conditions.
- Driver door is locked (when locked keyfob or power window main switch, door key cylinder switch)
- Driver door is opened (driver door switch turns ON)
- Ignition switch ON.

INTERIOR LAMP BATTERY SAVER CONTROL
If the room lamp remains illuminated by the door switch open signal, or if the room lamp switch is in the ON position for more than 30 minutes after the ignition switch is turned to the OFF position, the BCM will automatically turn off the map lamp, step lamp, and/or personal lamp and vanity mirror lamp. After lamps turn OFF by the battery saver system, the lamps illuminate again when
- signal from keyfob, or
- door lock and unlock switch, or
- key cylinder is locked or unlocked, door is opened or closed, key is removed from ignition key cylinder or inserted in ignition key cylinder.

Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.