Courtesy Lamp: Description and Operation

System Description
When room lamp and personal lamp switch is in AUTO position, room lamp and personal 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 room lamp and personal lamp turns ON, there is a gradual brightening over 1 second.
When room lamp and personal lamp turns OFF, there is a gradual dimming over 1 second.
The room lamp and personal lamp timer is controlled by the BCM (body control module).
Room lamp and personal lamp timer control settings can be changed with CONSULT-II.
Ignition keyhole illumination turns ON when driver door is opened (door switch ON) or key is removed from key cylinder. Illumination turns OFF when driver door is closed (door switch OFF).
Step and foot lamp turns ON when driver door, passenger or rear doors are opened (door switch ON). Lamp turns OFF when driver, passenger and rear 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 3
- to BCM terminal 42
- to trunk room lamp terminal +, and
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 55.

When the key is inserted in key switch, power is supplied
- through the key switch terminal 4
- to BCM terminal 37.

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 38.

When the BCM receives input to supply power to terminal 41, power is supplied
- to step lamp terminals +
- to rear console lamp terminal 2
- to ignition keyhole illumination terminal +
- to foot lamp terminals +
- to vanity mirror lamp terminals 1
- to personal lamp terminal 2
- to interior room lamp terminal 7.

Ground is supplied
- to BCM terminals 49 and 52
- through grounds M57, M61 and M79.

When the driver side door is opened, ground is supplied
- through case ground of front door switch LH
- to BCM terminal 62.

When the passenger side door is opened, ground is supplied
- to BCM terminal 12
- through case ground of front door switch RH.

When the rear door LH is opened, ground is supplied
- to BCM terminal 63
- through case ground of rear door switch LH.

When the rear door RH is opened, ground is supplied
- to BCM terminal 13
- through case ground of rear door switch RH.

When the driver side door is unlocked by the door lock and unlock switch, BCM receives a ground signal
- to BCM terminal 22
- to main power window and door lock/unlock switch terminal 14 or front power window and door lock/ unlock switch terminal 16
- to main power window and door lock/unlock switch terminal 17 or front power window and door lock/ unlock switch terminal 11
- through grounds M57, M61 and M79.

When the driver side door is unlocked by the front door lock assembly (driver side) (key cylinder switch), BCM receives a ground signal
- to BCM terminal 22
- from main power window and door lock/unlock switch terminal 14
- to main power window and door lock/unlock switch terminal 4
- from front door lock assembly (driver side) (key cylinder switch) terminal 1
- to front door lock assembly (driver side) (key cylinder switch) terminal 5
- through grounds M57, M61 and M79.

When a signal or combination of signals is received by BCM, ground is supplied
- to personal lamp terminals 4 and 6
- through interior room lamp (room/map lamps) terminal 5
- to interior room lamp (room/map lamps) when interior room lamp switch is in AUTO
- to interior room lamp (room/map lamps) terminal 6
- to foot lamp LH and RH terminal -
- through BCM terminal 48.

With power and ground supplied, the interior lamp illuminates.

SWITCH OPERATION
When driver door switch is ON (door is opened), ground is supplied
- to ignition keyhole illumination terminal -
- through BCM terminal 1.

And power is supplied
- through BCM terminal 41
- to ignition keyhole illumination terminal +.

When any door switch is ON (door is opened), ground is supplied
- to front step lamp LH and RH, rear step lamp LH and RH terminal -
- through BCM terminal 47.

And power is supplied
- through BCM terminal 41
- to every step lamp terminal + and personal lamp LH and RH terminal 2.

When map lamp switch is ON, ground is supplied
- to map lamp terminal 4
- through grounds M57, M61 and M79.

And power is supplied
- through BCM terminal 41
- to map lamp terminal 7.

When vanity mirror lamp (driver side and passenger side) is ON, ground is supplied
- to vanity mirror lamp (driver side and passenger side) terminal 2
- through grounds M57, M61 and M79.

And power is supplied
- through BCM terminal 41
- to vanity mirror lamp (driver side and passenger side) terminal 1.

When rear console lamp switch is ON, ground is supplied
- to rear console lamp terminal 4
- through grounds B117 and B132.

And power is supplied
- through BCM terminal 41
- to rear console lamp terminal 2.

When trunk room lamp is ON, ground is supplied
- to trunk lamp switch and trunk release solenoid (trunk lamp switch) terminal 2
- to trunk room lamp terminal -
- to BCM terminal 57
- through grounds B7 and B19.

And power is supplied
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to trunk room lamp terminal +.

ROOM LAMP TIMER OPERATION
When interior room lamp and map lamp switch is in AUTO position and when all conditions below are met, BCM performs timer control (maximum 30 seconds) for interior room lamp and map lamp ON/OFF.
In addition, when map turns ON or OFF there is gradual brightening or dimming over 1 second.

Power is supplied
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to key switch terminal 3.

Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.

Ground is supplied
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 14.

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

Key is in ignition key cylinder (key switch ON), power is supplied
- through key switch terminal 4
- to BCM terminal 37.

When key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated. BCM detects that key has been removed, determines that interior room lamp and map lamp timer conditions are met, and turns the interior room lamp and 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 62 changes between 0V (door open) -> 12V (door closed). The BCM determines that conditions for interior room lamp and map lamp operation are met and turns the interior room lamp ON for 30 seconds.

Timer control is cancelled under the following conditions.
- Driver door is locked (when locked by keyfob, main power window and door lock/unlock switch, or front door lock assembly (key cylinder switch)
- Driver door is opened (driver door switch turns ON)
- Ignition switch ON.

INTERIOR LAMP BATTERY SAVER CONTROL
If interior lamp is left "ON", it will not be turned out even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.

BCM controls interior lamps listed below:
- Vanity mirror lamp
- Interior room lamp (room/map lamps)
- Personal lamp
- Step lamp
- Foot lamp
- Ignition keyhole illumination
- Rear console lamp

After lamps turn OFF by the battery saver system, the lamps illuminate again when
- signal received from keyfob, or main power window and door lock/unlock switch or front door lock assembly (key cylinder switch) is locked or unlocked
- door is opened or closed
- key is removed from or inserted in ignition key cylinder.

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