Interior Lighting Module: Description and Operation
INTERIOR LAMP, IGNITION KEYHOLE ILLUMINATION TIMER CONTROLFunction
Interior lamp timer keeps interior lamp and ignition keyhole illuminated for about 30 seconds when:
^ driver's door is unlocked while key is out of ignition,
^ key is pulled out of ignition while driver's door is closed, and
^ key is pulled out of ignition and driver's door is opened and then closed.
The timer is cancelled, and interior lamp and ignition keyhole illumination turn off when:
^ driver's door is locked, or
^ ignition switch is turned "ON".
Power supply and ground
Power is supplied at all times
^ through 7.5 A fuse [No. (26) located in the fuse block (J/B)]
^ to interior lamp terminal (1),
^ to ignition keyhole illumination terminal (1).
Power is also supplied at all times
^ through 7.5 A fuse [No. (40) located in the fuse block (J/B)]
^ to key switch terminal (1).
With the ignition switch in the ON or START position, power is supplied
^ through 7.5 A fuse [No. (12) located in the fuse block (J/B)]
^ to Body Control Module (BCM) terminal (29).
Driver door control unit (LCUO1) terminal (1) is connected to BCM terminal (38) by DATA LINE A. Also, driver door control unit terminal (2) is connected to BCM terminal (33) by DATA LINE B.
Ground is supplied to driver door control unit terminal (4)
^ through front driver's side door lock actuator (unlock sensor) terminals (2) and (4) when front door lock actuator is in UNLOCK position
^ through body grounds (M13) and (M73).
Timer operation
Driver's door is unlocked, driver's door is opened and then closed or key is withdrawn from ignition key cylinder.
Ground is then supplied to interior lamp terminal (2) and ignition key hole illumination terminal (2) to illuminate.
While timer is activated, ignition switch is turned ON or driver's door is locked. Timer will then be canceled.
INTERIOR LAMP ON-OFF CONTROL
Power is supplied at all times
^ through 7.5 A fuse [No. (26) located in the fuse block (J/B)]
^ to interior lamp terminal (1).
BCM terminal (21) is grounded when any door switch is in OPEN position.
When the front driver side door switch, front passenger side door switch, rear LH door switch or rear RH door switch is in OPEN position, interior lamp turns on.