Courtesy Lamp: Description and Operation

INTERIOR ROOM LAMP

System Description
When room lamp and personal lamp switch is in DOOR position, room lamp and personal lamp ON/OFF is controlled by timer according to signals from switches including key switch (with column shift) or key switch and key lock solenoid (with floor shift), front door switch LH side, unlock signal from key fob, door lock and unlock switch, key cylinder lock and unlock switch, and 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. Step and foot lamp turns ON when front or rear doors are opened (door switch ON). Lamp turns 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. 19, located in the fuse block (J/B)]
- to key switch terminal 3, and
- through 15 A fuse [No. 22, located in the fuse block (J/B)]
- to BCM terminal 57, and
- through 50A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 70, and
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to cargo lamp relay terminals 2 and 5.

When the key is inserted in key switch (with column shift) or key switch and key lock solenoid (with floor shift),
power is supplied
- through the key switch (with column shift) or key switch and key lock solenoid (with floor shift) terminal 4
- to BCM terminal 37.

With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse (No. 59, located in the fuse and relay box)
- to BCM terminal 38.

Ground is supplied
- to BCM terminal 67
- through grounds M57, M61 and M79.

When the front door LH is opened, ground is supplied
- to BCM terminal 47
- through front door switch LH terminal 2
- through case ground of front door switch LH (crew cab) or
- through front door switch LH terminal 3 (king cab)
- through grounds B7 and B19.

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 (crew cab) or
- through front door switch RH terminal 3 (king cab)
- through grounds B117 and B132 (king cab).

When the rear door LH (crew cab) is opened, ground is supplied
- to BCM terminal 48
- through rear door switch LH terminal 2
- through case ground of rear door switch LH.

When the rear door LH (king cab) is opened, ground is supplied
- to BCM terminal 47
- through rear door switch upper LH and rear door switch lower LH terminal 1
- through rear door switch upper LH and rear door switch lower LH terminal 2
- through grounds B7 and B19.

When the rear door RH (crew cab) is opened, ground is supplied
- to BCM terminal 13
- through rear door switch RH terminal 2
- through case ground of rear door switch RH.

When the rear door RH (king cab) is opened, ground is supplied
- to BCM terminal 12
- through rear door switch upper RH and rear door switch lower RH terminal 1
- through rear door switch upper RH and rear door switch lower RH terminal 2
- through grounds B117 and B132.

When the front door LH or RH 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 (crew cab) or 12 (king cab) and power window and door lock/unlock switch RH terminal 16
- through main power window and door lock/unlock switch terminal 17 (crew cab) or 15 (king cab)
- through grounds M57, M61 and M79.

When the front door LH is unlocked by the key, the BCM receives serial data
- to BCM terminal 22
- through main power window and door lock/unlock switch terminal 14 (crew cab) or 12 (king cab)
- through main power window and door lock/unlock switch terminal 6 (crew cab) or 7 (king cab)
- through front door lock assembly LH (key cylinder switch) terminal 6
- to 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 the BCM, ground is supplied
- to door mirror LH and RH terminal 13 (with puddle lamps)
- to front room/map lamp assembly terminal 1 and
- to personal lamps 2nd row terminal 1 (with rear roof console)
- through front room/map lamp assembly terminal 2
- through BCM terminal 63.

With power and ground supplied, the lamps illuminate. When the BCM receives cargo lamp switch input, ground is supplied to cargo lamp relay terminal 1, which energizes the cargo lamp relay. When this relay is energized, power is supplied
- through cargo lamp relay terminal 3
- to high-mount stop lamp (cargo lamp) terminal 3, and
- to rear combination lamp (tailgate cargo lamp) LH and RH terminal 3.

SWITCH OPERATION
When any door switch is ON (door is opened), ground is supplied
- to front and rear (crew cab) step lamps LH and RH and foot lamp LH and RH (with foot lamps) terminal -
- through BCM terminal 62.

And power is supplied
- through BCM terminal 56
- to front and rear (crew cab) step lamps LH and RH terminal +
- to door mirror LH and RH terminal 12 (with puddle lamps)
- to front room/map lamp assembly terminal 6
- to vanity lamp LH and RH terminal 1 (with vanity lamps)
- to personal lamp 2nd row terminal 3 (with rear roof console)
- to room lamp terminal 2
- to foot lamp LH and RH terminal + (with foot lamps).

When front room/map lamp assembly switch is ON, ground is supplied
- to front room/map lamp assembly terminal 5
- through grounds M57, M61 and M79.

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

When cargo lamp switch is ON, ground is supplied
- to BCM terminal 31
- through cargo lamp switch terminal 1
- through cargo lamp switch terminal 3
- through grounds M57, M61 and M79.

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

Power is supplied
- through 10 A fuse [No. 19, located in the fuse block (J/B)]
- to key switch (with column shift) or key switch and key lock solenoid (with floor shift) terminal 3.

Key is removed from key switch (with column shift) or key switch and key lock solenoid (with floor shift) (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 (crew cab) or 12 (king cab).

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

Key is in key switch (with column shift) or key switch and key lock solenoid (with floor shift) (key switch ON), power is supplied
- through key switch (with column shift) or key switch and key lock solenoid (with floor shift) terminal 4
- to BCM terminal 37.

When key is removed from key switch (with column shift) or key switch and key lock solenoid (with floor shift) (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 lamps ON for 30 seconds.

When front door LH opens -> closes, and the key is not inserted in the key switch (with column shift) or key switch and key lock solenoid (with floor shift) (key switch OFF), BCM terminal 47 changes between 0 V (door open) -> 12 V (door closed). The BCM determines that conditions for interior room lamp operation are met and turns the interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.
- Front door LH is locked [when locked by key fob, 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 off 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:
- Room lamp
- Vanity lamps
- Front room/map lamp assembly
- Personal lamp 2nd row
- Step lamps
- Puddle lamps
- Foot lamps

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 key switch (with column shift) or key switch and key lock solenoid (with floor shift) or inserted in key switch (with column shift) or key switch and key lock solenoid (with floor shift).

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