System Description

WARNING: This page is about a different car, the 2008 Scion xB. However, it is still accessible from the selected car via links, so may be relevant.

LIGHTING SYSTEM
1. Illumination control system (Illuminated entry system):
  When the doors are unlocked through a key or transmitter operation, or when a door is opened or closed, the illuminated entry system turns on the interior light.
  1. The main body ECU receives the following signals (A).
    - Door courtesy light switch signal
    - Door detection switch signal
    - Ignition switch signal
  2. The main body ECU controls the following signal based on the signals listed in A.
    - Illumination operation signal
  3. The main body ECU controls the on/off and fade-in/fade-out operation of the following parts.
    - Room light assembly
2. Battery saver system:
  When the ignition switch is turned to OFF and any of the doors is open continuously for 20 minutes, the main body ECU turns the illumination operation signal off. As a result, the room light assembly turn off.
  1. The main body ECU receives the following signals (B).
    - Door courtesy light switch signal
    - Engine switch signal
  2. The main body ECU controls the following signal based on the signals listed in B (C).
    - Illumination operation signal
  3. The main body ECU controls the illumination period of the following parts based on the signals listed in C.
    - Room light assembly