HEADUP DISPLAY SWITCH INSPECTION

PROCEDURE


  1. INSPECT HEADUP DISPLAY SWITCH ASSEMBLY (for LHD)

    A01HJZRC06
    *1 HUD Switch
    *2 TILT Switch
    *3 RHEOSTAT Switch
    *4 DISP Switch
    *a

    Component without harness connected

    (Headup Display Switch Assembly)

    1. Check the resistance.

      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. A01HJZRC05
      *a

      Component without harness connected

      (Headup Display Switch Assembly)

      Check the illumination.

      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.

  2. INSPECT HEADUP DISPLAY SWITCH ASSEMBLY (for RHD)


    1. A01HEHUC03
      *1 HUD Switch
      *2 TILT Switch
      *3 RHEOSTAT Switch
      *4 DISP Switch
      *a

      Component without harness connected

      (Headup Display Switch Assembly)

      Check the resistance.

      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. A01HEHUC04
      *a

      Component without harness connected

      (Headup Display Switch Assembly)

      Check the illumination.

      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.