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Home >> Subaru >> 2020 >> BRZ tS >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting System (Exterior) >> Headlight Dimmer Switch >> Unit Inspection

Unit Inspection

  1. Inspection of the headlight dimmer switch ASSY
    1. Measurement of the Resistance of the light control switch
      1. Check the resistance between the connector terminals.
        STANDARD VALUE SPECIFICATION - RESISTANCE

        Inspection terminals (Terminal symbol) Inspection conditions Standard value
        18 (T) - 12 (EL) Light control switch OFF 10 kΩ or more
        20 (H) - 12 (EL) 10 kΩ or more
        19 (A) - 12 (EL)[(1)] 10 kΩ or more
        18 (T) - 12 (EL) Light control switch TAIL Less than 1 Ω
        18 (T) - 12 (EL) Light control switch HEAD Less than 1 Ω
        20 (H) - 12 (EL) Less than 1 Ω
        19 (A) - 12 (EL)[(1)] Light control switch AUTO Less than 1 Ω
        (1) With light control system
      G12595314Courtesy of SUBARU OF AMERICA, INC.
    2. Measurement of the Resistance of the dimmer switch
      1. Check the resistance between the connector terminals.
        STANDARD VALUE SPECIFICATION - RESISTANCE

        Inspection terminals (Terminal symbol) Inspection conditions Standard value
        11 (HU) - 12 (EL) Dimmer switch FLASH Less than 1 Ω
        17 (HF) - 12 (EL) Less than 1 Ω
        11 (HU) - 12 (EL) Dimmer switch HI BEAM Less than 1 Ω
        NOTE: "HI BEAM" inspection is performed when the light control switch is in the "HEAD" position.
    3. Measurement of the Resistance of the turn signal switch
      1. Check the resistance between the connector terminals.
        STANDARD VALUE SPECIFICATION - RESISTANCE

        Inspection terminals (Terminal symbol) Inspection conditions Standard value
        13 (TR) - 12 (EL) Turn signal switch OFF 10 kΩ or more
        15 (TL) - 12 (EL) 10 kΩ or more
        13 (TR) - 12 (EL) Turn signal switch (TURN R) ON Less than 1 Ω
        15 (TL) - 12 (EL) Turn signal switch (TURN L) ON Less than 1 Ω
    4. Measurement of the Resistance of the fog light switch
      1. Check the resistance between the connector terminals.
        STANDARD VALUE SPECIFICATION - RESISTANCE

        Inspection terminals (Terminal symbol) Inspection conditions Standard value
        4 (BFG) - 3 (LFG)[(1)] Fog light switch OFF 10 kΩ or more
        4 (BFG) - 3 (LFG)[(1)] Fog light switch Fr Less than 1 Ω
        (1) With front fog lights
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