LIGHTING SYSTEM CONTROL AUTOMATIC LIGHT CONTROL

  1. FUNCTION OF MAIN COMPONENTS

    Component

    Function

    Body ECU

    Receives various signals and illuminates the headlights, taillights, clearance lights and license plate lights.

    H-LP Relay

    Supplies power to the headlights.

    TAIL Relay

    Shuts down power to the taillights, clearance lights and license plate lights.

    Headlight Dimmer Switch Assembly

    • Light Control Switch

    Outputs a light control switch position signal to the body ECU.

    Automatic Light Control Sensor

    Detects the ambient light level.

  2. SYSTEM CONTROL

    1. The automatic light control system operates as follows:

      Function

      Outline

      Taillights turn on

      When all of the following conditions are met, the taillights, clearance lights, and license plate lights automatically turn on:

      • The ambient light is dim or momentarily dark.

      • The ignition switch is ON.

      • The light control switch is in the AUTO position.

      Headlights and Taillights turn on

      When all of the following conditions are met, the headlights, taillights, clearance lights and license plate lights automatically turn on:

      • The ambient light is dark or momentarily bright.

      • The ignition switch is ON.

      • The light control switch is in the AUTO position.

      Headlights and Taillights turn off

      When the ambient light is bright, the exterior lights automatically turn off.