Courtesy Lamp: Description and Operation

INTERIOR ROOM LAMP

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 LH, 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 front door LH is opened (door switch ON) or key is removed from key cylinder. Illumination turns OFF when front door LH is closed (door switch OFF).

STEP and foot lamps turn ON when a front or rear door is opened (door switch ON). Lamps turn OFF when front 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 and key lock solenoid terminal 3, 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 and key lock solenoid, power is supplied
- through the key switch and key lock solenoid 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 front and rear step lamp LH and RH terminal 1
- to rear console lamp (with rear console) terminal 2
- to ignition keyhole illumination terminal 1
- to foot lamp LH and RH terminal 1
- to vanity mirror lamp LH and RH terminal 1
- to personal lamp terminal 2
- to interior room lamp terminal 7, and
- to trunk room lamp terminal 1.

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

When the front door LH is opened, ground is supplied
- to BCM terminal 62
- through front door switch LH terminal 2
- through case ground of front door switch LH

When the front door RH is opened, ground is supplied
- to BCM terminal 12
- through front door switch RH terminal 2
- through case ground of front door switch RH.

When the rear door LH is opened, ground is supplied
- to BCM terminal 63
- through rear door switch LH terminal 1
- through case ground of rear door switch LH.

When the rear door RH is opened, ground is supplied
- to BCM terminal 13
- through rear door switch RH terminal 1
- through case ground of rear door switch RH.

When the front door LH is unlocked by the door lock and unlock switch, BCM receives serial data
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 14 or power window and door lock/unlock switch RH terminal 16.

The main power window and door lock/unlock switch receives a ground signal
- to main power window and door lock/unlock switch terminal 17
- through grounds M57, M61 and M79.

The power window and door lock/unlock switch RH receives a ground signal
- to front power window and door lock/unlock switch terminal 11
- through grounds M57, M61 and M79.

When the front door LH is unlocked by the front door lock assembly LH (key cylinder switch), BCM receives
serial data
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 14.

And the main power window and door lock/unlock switch receives a ground signal
- to main power window and door lock/unlock switch terminal 6
- through front door lock assembly LH (key cylinder switch) terminal 6
- through front door lock assembly LH (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, and
- to interior room lamp (room/map lamps) when interior room lamp switch is in AUTO
- through interior room lamp (room/map lamps) terminal 6, and
- to foot lamp LH and RH terminal 2
- through BCM terminal 48.

With power and ground supplied, the interior lamp illuminates.

SWITCH OPERATION

When front door switch LH is ON (door is open), ground is supplied
- to ignition keyhole illumination terminal 2
- through BCM terminal 1.

And power is supplied
- through BCM terminal 41
- to ignition keyhole illumination terminal 1.

When any door switch is ON (door is open), ground is supplied
- to front and rear step lamp LH and RH terminal 2
- through BCM terminal 47.

And power is supplied
- through BCM terminal 41
- to every step lamp terminal 1.

When personal lamp switch is HI/LO, ground is supplied
- to personal lamp terminal 5
- through grounds M57, M6a and M79.

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

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

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

When vanity mirror lamp (LH or RH) is ON, ground is supplied
- to vanity mirror lamp (LH or RH) terminal 2
- through grounds M57, M61 and M79.

And power is supplied
- through BCM terminal 41
- to vanity mirror lamp (LH and RH) terminal 1.

When rear console lamp switch (with rear console) 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 lamp switch and trunk release solenoid is ON, ground is supplied
- to BCM terminal 57
- through trunk lamp switch and trunk release solenoid (trunk lamp switch) terminal 1
- through trunk lamp switch and trunk release solenoid (trunk lamp switch) terminal 2
- through grounds B7 and B19.

When the BCM receives a ground signal on terminal 57, ground is supplied
- through BCM terminal 64
- to trunk room lamp terminal 2.

And power is supplied
- through BCM terminal 41
- to trunk room lamp terminal 1.

ROOM LAMP TIMER OPERATION
When interior room lamp/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/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.

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

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

When front door LH opens . closes and the key is not inserted in the key switch (key switch OFF), BCM terminal 62 changes between 0 V (door open) . 12 V (door closed). The BCM determines that conditions for interior room lamp/map lamp operation are met and turns the interior room lamp/map lamp ON for 30 seconds.

Timer control is canceled under the following conditions.
- Front door LH is locked (when locked by keyfob, main power window and door lock/unlock switch, or front door lock assembly LH (key cylinder switch)
- Front door LH is opened (front door switch LH 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 (with rear console)
- Trunk room 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 LH (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.