LIGHTING SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Main Body ECU (Multiplex Network Body ECU) Receives various signals and illuminates the headlights, taillights, clearance lights and license plate lights.

    Instrument Panel Junction Block Assembly

    - IG No. 1 Relay

    		 Receives the ignition signal and transmits it to the main body ECU (multiplex network body ECU).

    Instrument Panel Junction Block Assembly

    - Tail Relay

    		 Supplies power to the taillights, clearance lights, and license plate lights.
    Automatic Light Control Sensor Detects the ambient light level.
    Headlight Dimmer Switch Assembly Light Control Switch Outputs a light control signal and transmits it to the main body ECU (multiplex network body ECU).
    Headlight Relay Supplies power to the low beams.
    Front Door Courtesy Light Switch Assembly (Driver Side) Detects whether a door is open or closed and transmits a signal to the main body ECU (multiplex network body ECU).

  2. DIAGNOSIS


    1. When the main body ECU (multiplex network body ECU) detects a malfunction in the automatic light control system, Diagnostic Trouble Codes (DTCs) are stored in memory.

    2. The DTCs can be read using the Global TechStream (GTS). For details, refer to the Repair Manual.