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Headlight Dimmer Switch: Inspection

  1. INSPECT HEADLIGHT DIMMER SWITCH 
    1. Check the resistance of the light control switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        STANDARD RESISTANCE SPECIFICATIONS

        Tester Connection Switch Condition Specified Condition
        10 (T1) - 13 (B1)
        11 (ED) - 12 (RF)        		 OFF 10 kΩ or higher
        10 (T1) - 13 (B1) TAIL Below 1 Ω
        10 (T1) - 13 (B1)
        11 (ED) - 12 (RF)        		 HEAD Below 1 Ω

        If the result is not as specified, replace the headlight dimmer switch.

        Fig 1: Identifying Headlight Dimmer Switch Connector Terminal
        G05402558Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the resistance of the headlight dimmer switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        STANDARD RESISTANCE SPECIFICATIONS

        Tester Connection Switch Condition Specified Condition
        9 (HU) - 11 (ED) FLASH Below 1 Ω
        8 (HL) - 11 (ED) LOW BEAM Below 1 Ω
        9 (HU) - 11 (ED) HI BEAM Below 1 Ω

        If the result is not as specified, replace the headlight dimmer switch.

    3. Check the resistance of the turn signal switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        STANDARD RESISTANCE SPECIFICATIONS

        Tester Connection Switch Condition Specified Condition
        6 (TR) - 7 (E) Right turn Below 1 Ω
        6 (TR) - 7 (E)
        5 (TL) - 7 (E)        		 Neutral 10 kΩ or higher
        5 (TL) - 7 (E) Left turn Below 1 Ω

        If the result is not as specified, replace the headlight dimmer switch.

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