WINDSHIELD DEICER SWITCH ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT FRONT WIPER DEICER SWITCH


    1. Check wire harness and connector.


      1. A012NDWC16
        *a

        Front view of wire harness connector

        (to Front Wiper Deicer Switch)

        Disconnect the E127 front wiper deicer switch connector.

      2. Measure the voltage and resistance according to the value(s) in the table below.

        Standard Voltage
        Tester Connection Condition Specified Condition
        E127-1 (ILL+) - E127-6 (ILL-) Headlight dimmer switch off → tail or head Below 1 V → 11 to 14 V
        E127-8 (D) - E127-5 (E) Ignition switch ON 11 to 14 V
        E127-4 (IG) - E127-5 (E) Ignition switch ON 11 to 14 V
        Standard Resistance
        Tester Connection Condition Specified Condition
        E127-6 (ILL-) - Body ground Always Below 1 Ω
        E127-5 (E) - Body ground Always Below 1 Ω

    2. Check that the front wiper deicer switch operates.


      1. A012HEEC05
        *a

        Component with harness connected

        (Front Wiper Deicer Switch)

        Connect the E127 front wiper deicer connector.

      2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage
        Tester Connection Condition Specified Condition
        E127-8 (D) - E127-5 (E) Ignition switch ON, front wiper deicer switch off → on 11 to 14 V → Below 1 V (after 12 to 18 minutes: 11 to 14 V)
        E127-4 (IG) - E127-5 (E) Ignition switch ON 11 to 14 V

        If the result is not as specified, replace the front wiper deicer switch.

    3. A012IKWC05
      *a Indicator Light
      *b Illumination

      Check that the indicator light illuminates.


      1. Turn the ignition switch ON.

      2. Make sure that the indicator light illuminates when the front wiper deicer switch is turned on, and then goes off after 12 to 18 minutes elapse.

        OK
        The indicator light goes off.

    4. Check that the illumination illuminates.


      1. Make sure that the illumination illuminates when the headlight dimmer switch is turned from off to tail or head.

        OK
        The illumination illuminates.