HEADUP DISPLAY SYSTEM Main Switch Circuit

DESCRIPTION

The headup display switch assembly and meter mirror sub-assembly are connected via direct line. The meter mirror sub-assembly can be turned off and on by operating the headup display switchassembly.

WIRING DIAGRAM

B0059DTE02
*1 ILD
*2 ILU
*3 Headup Display Switch Assembly
*4 Meter Mirror Sub-assembly

PROCEDURE


  1. READ VALUE USING GTS (MAIN SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Head Up Display / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Head Up Display > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Main Switch Main switch OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -
      Brightness Up Switch Brightness up switch OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -
      Brightness Down Switch Brightness down switch OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -
      Projection Position Up Switch Projection position up switch OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -
      Projection Position Down Switch Projection position down switch OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -
      Display Change Switch Display change switch OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -
      OK
      Headup display switch assembly condition displayed on the GTS changes with the actual switch operation.

      Body Electrical > Head Up Display > Data List
      Tester Display
      Main Switch
      Brightness Up Switch
      Brightness Down Switch
      Projection Position Up Switch
      Projection Position Down Switch
      Display Change Switch
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE METER MIRROR SUB-ASSEMBLY Click here

    NG

  2. INSPECT HEADUP DISPLAY SWITCH ASSEMBLY


    1. Remove the headup display switch assembly.

      Click here

    2. Inspect the headup display switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADUP DISPLAY SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (METER MIRROR SUB-ASSEMBLY - HEADUP DISPLAY SWITCH ASSEMBLY)


    1. Disconnect the J5 meter mirror sub-assembly connector.

    2. Disconnect the I70 headup display switch assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J5-9(SW1) - I70-12(ILU) Always Below 1 Ω
      J5-10(SW2) - I70-10(ILD) Always Below 1 Ω
      J5-16(E) - I70-6(CH) Always Below 1 Ω
      J5-9(SW1) or I70-12(ILU) - Body ground Always 10 kΩ or higher
      J5-10(SW2) or I70-10(ILD) - Body ground Always 10 kΩ or higher
      J5-16(E) or I70-6(CH) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE METER MIRROR SUB-ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR