Courtesy Lamp: Description and Operation
System DescriptionWhen room lamp switch is in DOOR position, room lamp ON/OFF is controlled by timer according to signals from switches including key detection switch, driver door switch, driver door lock switch.
When room lamp turns ON, there is a gradual brightening over 1 second. When room lamp turns OFF, there is a gradual dimming over 1 second.
The interior room lamp timer is controlled by the BCM.
Interior room lamp timer control settings can be changed with CONSULT-II.
INTERIOR LAMP TIMER OPERATION
When room lamp switch is in DOOR position, and when all conditions below are met, BCM performs timer control (maximum 30 seconds) for interior lamp ON/OFF.
In addition, when lamp turns ON or OFF there is gradual brightening or dimming over 1 second.
Power is supplied
- to 10 A fuse [No. 19 (located in the fuse block (J/B)]
- through joint connector -1 terminal 4
- to key switch and key lock solenoid terminal 3.
When all doors are closed (all door switches OFF) and key is removed from key cylinder (key detection switch OFF), power will not be supplied to BCM terminal 62.
When driver door lock switch is turned ON (unlocked),
Ground is supplied
- from BCM terminal 30
- to front door lock actuator LH terminal 1.
At this time, BCM detects that driver door is unlocked. It determines that interior lamp timer operation conditions are met, and turns the interior lamp ON for 30 seconds.
When all doors are closed (all door switches OFF) and key is in key cylinder (key detection switch ON),
Power is supplied
- through key switch and key lock solenoid terminal 4
- to BCM terminal 62.
When key is removed from key switch and key lock solenoid (key detection switch OFF), power supply to BCM terminal 62 is terminated. BCM detects that key has been removed, determines that interior lamp timer conditions are met, and turns the interior lamp ON for 30 seconds.
When driver door closes, and the key is not inserted in the key switch and key lock solenoid (key detection switch OFF), BCM terminal 14 or 54 changes from 0 V (door open) to 12 V (door closed). The BCM determines that conditions for interior 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.
BATTERY SAVER
If the interior 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 interior room lamp(s).
STEP LAMP
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).