HEADUP DISPLAY SWITCH INSPECTION

Tech Tips


  • Use the same procedure for RHD and LHD vehicles.

  • The procedure listed below is for LHD vehicles.


  1. INSPECT HEADUP DISPLAY SWITCH ASSEMBLY

    A01FRKOE01
    Text in Illustration
    *1 HUD Switch
    *2 TILT Switch
    *3 RHEOSTAT Switch
    *4 DISP Switch
    *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
      12 (ILU) - 6 (CH)

      HUD switch off

      (Not pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 100 kΩ
      12 (ILU) - 6 (CH)

      HUD switch on

      (Pushed)

      		 Below 1 Ω
      10 (ILD) - 6 (CH) 100 kΩ
      12 (ILU) - 6 (CH)

      TILT switch (UP) on

      (Pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 3210 Ω
      12 (ILU) - 6 (CH)

      TILT switch off

      (Not pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 100 kΩ
      12 (ILU) - 6 (CH)

      TILT switch (DOWN) on

      (Pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 1010 Ω
      12 (ILU) - 6 (CH)

      RHEOSTAT switch (ILL UP) on

      (Pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 330 Ω
      12 (ILU) - 6 (CH)

      RHEOSTAT switch off

      (Not pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 100 kΩ
      12 (ILU) - 6 (CH)

      RHEOSTAT switch (ILL DOWN) on

      (Pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) Below 1 Ω
      12 (ILU) - 6 (CH)

      DISP switch off

      (Not pushed)

      		 100 kΩ
      10 (ILD) - 6 (CH) 100 kΩ
      12 (ILU) - 6 (CH)

      DISP switch on

      (Pushed)

      		 330 Ω
      10 (ILD) - 6 (CH) 100 kΩ

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

    2. A01FRKOE02
      Text in Illustration
      *a

      Component without harness connected

      (Headup Display Switch Assembly)

      Apply battery voltage to the connector and check the illumination condition.

      OK
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal 1 (ILL+)

      Battery negative (-) → Terminal 8 (ILL-)

      		 Illuminates

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