Map Lamp Timer Operation

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

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

In addition, when map lamp turns ON or OFF there is gradual brightening or dimming over 1 second.

Power is supplied at all times

To 10A fuse [No. 21 (located in fuse block (J/B)]
Through key switch terminal 2.

When all doors are closed (all door switches OFF) and key is removed from key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.

Ground is supplied

Through BCM terminal 22
To power window main switch (door lock and unlock switch) terminal 12.

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

When all doors are closed (all door switches OFF) and key is in key cylinder (key switch ON), Power is supplied

Through key switch terminal 1
To BCM terminal 37.

When the key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated.

BCM detects that key has been removed. It determines that map lamp timer conditions are met, and turns map lamp ON for 30 seconds.

When driver door opens --> closes, and key is not inserted in key switch (key switch OFF), BCM terminal 62 changes between 0V (door open) --> 5V (door closed). BCM determines that conditions for spot lamp operation are met and turns interior lamp ON for 30 seconds.

Timer control is canceled under the following conditions.

Driver door is locked (When locked key fob or power window main switch (door lock and unlock switch, door key cylinder switch).
Driver door is opened (driver door switch turns ON).
Ignition switch ON.