HEADUP DISPLAY SYSTEM Main Switch Circuit

DESCRIPTION

The no. 3 combination switch assembly (headup display switch) and meter mirror sub-assembly are connected via direct line. The meter mirror sub-assembly can be turned off and on by operating the no. 3 combination switch assembly (headup display switch).

WIRING DIAGRAM

B000X9PE36

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 No. 3 combination switch assembly (headup display switch) status OFF or ON

      OFF: Switch released

      ON: Switch pushed

      		 -

      Body Electrical > Head Up Display > Data List
      Tester Display
      Main Switch
      OK
      No. 3 combination switch assembly (headup display switch) condition displayed on the GTS changes with the actual switch operation.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE METER MIRROR SUB-ASSEMBLY Click here

    NG

  2. INSPECT NO. 3 COMBINATION SWITCH ASSEMBLY (HEADUP DISPLAY SWITCH)


    1. Remove the No. 3 combination switch assembly (headup display switch).

      Click here

    2. Inspect the No. 3 combination switch assembly (headup display switch).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 3 COMBINATION SWITCH ASSEMBLY (HEADUP DISPLAY SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (METER MIRROR SUB-ASSEMBLY - NO. 3 COMBINATION SWITCH ASSEMBLY [HEADUP DISPLAY SWITCH])


    1. Disconnect the P80 meter mirror sub-assembly connector.

    2. Disconnect the P63 No. 3 combination switch assembly (headup display switch) connector.

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


      1. for LHD:

        Standard Resistance
        Tester Connection Condition Specified Condition
        P80-9 (SW1) - P63-5 (ILU) Always Below 1 Ω
        P80-16 (E) - P63-15 (CH) Always Below 1 Ω
        P80-9 (SW1) or P63-5 (ILU) - Body ground Always 10 kΩ or higher
        P80-16 (E) or P63-15 (CH) - Body ground Always 10 kΩ or higher

      2. for RHD:

        Standard Resistance
        Tester Connection Condition Specified Condition
        P80-9 (SW1) - P63-4 (ILU) Always Below 1 Ω
        P80-16 (E) - P63-114 (CH) Always Below 1 Ω
        P80-9 (SW1) or P63-4 (ILU) - Body ground Always 10 kΩ or higher
        P80-16 (E) or P63-14 (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