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Home >> Toyota >> 2004 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Automatic Headlights & Lighting Systems) >> Component Tests >> Automatic Light Control Sensor

Automatic Light Control Sensor

WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Auto On Function -  Turn the ignition switch ON. Turn the light control switch to AUTO. Gradually cover the top of the sensor. Check that the accessory lights and headlights turn ON.
  2. Auto Off Function -  Gradually expose the sensor. Check that the headlights and accessory lights turn OFF.
  3. Lights-Off Condition - 
    • Turn the ignition switch ON.
    • Lights auto ON: Gradually cover the top of the sensor.
    • Verify that the lights will go out when the light control switch position is OFF or the area surrounding the sensor gets bright or when opening the driver's door while the ignition switch is OFF.
  4. Lights-On Condition - 
    • Open the driver's door while the ignition switch is OFF.
    • Turn the light control switch to AUTO leaving the door open and cover the top of the sensor, and verify that the lights go on when the ignition switch is turned ON.
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