HEADUP DISPLAY SWITCH INSPECTION

PROCEDURE


  1. INSPECT HEADUP DISPLAY SWITCH ASSEMBLY

    A0059T3E04
    Text in Illustration
    *a

    Component without harness connected

    (Headup Display Switch Assembly)

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      3 (NVM) - 1 (E) HUD SET switch is pressed 1782 to 1818 Ω
      HUD SET switch is not pressed 10 kΩ or higher
      HUD tilt up switch is pressed 811.8 to 828.2 Ω
      HUD tilt up switch is not pressed 10 kΩ or higher
      HUD tilt down switch is pressed 326.7 to 333.3 Ω
      HUD tilt down switch is not pressed 10 kΩ or higher
      4 (CH) - 1 (E) HUD main switch is pressed 1782 to 1818 Ω
      HUD main switch is not pressed 10 kΩ or higher
      HUD rheostat up switch is pressed 811.8 to 828.2 Ω
      HUD rheostat up switch is not pressed 10 kΩ or higher
      HUD rheostat down switch is pressed 326.7 to 333.3 Ω
      HUD rheostat down switch is not pressed 10 kΩ or higher

    2. Apply auxiliary battery voltage from the wire harness back side between the terminals of the switch, and check the lighting condition of the headup display switch assembly.

      OK
      Measurement Condition Condition Specified Condition

      Auxiliary battery positive (+) → 7 (ILL+)

      Auxiliary battery negative (-) → 2 (ILL-)

      		 Always Headup display switch assembly illuminates

      Auxiliary battery positive (+) → 6 (TAIL)

      Auxiliary battery negative (-) → 1 (E)

      		 Always HUD main switch illuminates

      If the result is not as specified, replace the headup display switch assembly.