Room Lamp Timer Operation

WARNING: This page is about a different car, the 2006 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

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 10A 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 0V (door open) --> 12V (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 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.