Courtesy Lamp: Description and Operation

INTERIOR ROOM LAMP

System Description
When spot lamp switch is in DOOR position, spot 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 spot lamp turns ON, there is a gradual brightening over 1 second. When spot lamp turns OFF, there is a gradual dimming over 1 second.

The spot lamp timer is controlled by the BCM.

Spot 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, passenger door, RH rear door, or LH rear door is opened (door switch ON). Lamp turns OFF when all 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 terminal 7.

When the key is removed from ignition key cylinder, power is interrupted:
- through key switch terminal 1
- to BCM 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 terminal 35.

Ground is supplied:
- to BCM terminal 8
- through body grounds terminals E17 and E43.

When the front driver side door is opened, ground is supplied:
- through case ground of front door switch driver side
- to BCM terminal 14.

When the front passenger side door is opened, ground is supplied:
- through case ground of front door switch passenger side
- to BCM terminal 10.

When any other door (except front door) is opened, ground is supplied to BCM terminal 11 in the same manner as the front door switch.

When the front driver side door is unlocked by the door lock and unlock switch, BCM receives a ground signal:
- through body grounds terminals M30 and M66
- to power window main switch terminal 15 (door lock and unlock switch with interruption detection function for all door window) or 5 (door lock and unlock switch without interruption detection function for all door window) or 7 (front passenger side)
- from power window main switch terminal 9 (door lock and unlock switch with interruption detection function for all door window) or 8 (door lock and unlock switch without interruption detection function for all door window) or 11 (front passenger side)
- to BCM terminal 74

When the front driver side door is unlocked by the front door key cylinder switch, BCM receives a ground signal:
- through body grounds M30 and M66
- to front door key cylinder switch terminal 2
- from front door key cylinder switch terminal 3
- to power window main switch terminal 5 (door lock and unlock switch with interruption detection function for all door window) or 19 (door lock and unlock switch without interruption detection function for all door window)
- from power window main switch terminal 9 (door lock and unlock switch with interruption detection function for all door window) or 8 (door lock and unlock switch without interruption detection function for all door window)
- to BCM terminal 74

When a signal, or combination of signals is received by BCM, ground is supplied:
- through BCM terminal 32
- to spot 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 spot lamp switch is ON, ground is supplied:
- through body grounds M30 and M66
- to spot lamp terminal 1.

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

When personal lamp (LH and/or RH) is ON, ground is supplied:
- through body grounds M30 and M66
- to personal lamp terminal 3.

And power is supplied:
- from BCM terminal 24
- to personal lamp terminal 2.

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

And power is supplied:
- from BCM terminal 24
- to vanity mirror lamp terminal 1.

SPOT LAMP TIMER OPERATION
When spot lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer control (maximum 30 seconds) for spot 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 (front door lock and unlock switch) terminal 15 (door lock and unlock switch with interruption detection function for all door window) or 5 (door lock and unlock switch without interruption detection function for all door window).

At this time, BCM detects that driver door is unlocked. It determines that spot lamp timer operation conditions are met, and turns the spot 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 spot lamp timer conditions are met, and turns the spot 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 0 V (door open). 12 V (door closed). The BCM determines that conditions for spot 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 (driver door lock switch turns OFF)
- 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 spot 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.