LIGHTING SYSTEM Turn Signal Switch Circuit

DESCRIPTION

The combination meter receives the turn signal switch information and controls the turn signal lights.

WIRING DIAGRAM

A01W0VOE07

PROCEDURE


  1. READ VALUE USING GTS


    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 / Combination Meter / Data List.

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

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Turn Signal Switch (Right) Turn signal switch (Right) signal/ON or OFF

      ON: Turn signal switch (Right) on

      OFF: Turn signal switch (Right) off

      		 -
      Turn Signal Switch (Left) Turn signal switch (Left) signal/ON or OFF

      ON: Turn signal switch (Left) on

      OFF: Turn signal switch (Left) off

      		 -
      Turn Switch Signal (Full Turn) Turn signal switch (full turn) signal/ON or OFF

      ON: Turn signal switch (Left or Right) on

      OFF: Turn signal switch (Left and Right) off

      		 -
      OK
      Normal conditions listed above are displayed.

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY


    1. Remove the headlight dimmer switch assembly Click here.

    2. for LHD:


      1. A01W2P8E35
        Text in Illustration
        *a

        Component without harness connected

        (Headlight Dimmer Switch Assembly)

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        12 (TR) - 15 (EL) Turn signal switch in neutral position 10 kΩ or higher
        11 (TL) - 15 (EL) Turn signal switch in neutral position 10 kΩ or higher
        13 (CR) - 15 (EL) Turn signal switch in neutral position 10 kΩ or higher
        12 (TR) - 15 (EL) Turn signal switch in right turn position Below 1 Ω
        13 (CR) - 15 (EL) Turn signal switch in full right turn position Below 1 Ω
        11 (TL) - 15 (EL) Turn signal switch in left turn position Below 1 Ω
        13 (CR) - 15 (EL) Turn signal switch in full left turn position Below 1 Ω

    3. for RHD:


      1. A01W2P8E74
        Text in Illustration
        *a

        Component without harness connected

        (Headlight Dimmer Switch Assembly)

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        20 (TR) - 16 (EL) Turn signal switch in neutral position 10 kΩ or higher
        19 (TL) - 16 (EL) Turn signal switch in neutral position 10 kΩ or higher
        18 (CR) - 16 (EL) Turn signal switch in neutral position 10 kΩ or higher
        20 (TR) - 16 (EL) Turn signal switch in right turn position Below 1 Ω
        18 (CR) - 16 (EL) Turn signal switch in full right turn position Below 1 Ω
        19 (TL) - 16 (EL) Turn signal switch in left turn position Below 1 Ω
        18 (CR) - 16 (EL) Turn signal switch in full left turn position Below 1 Ω

    NG

    REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the H13 combination meter assembly connector.

    2. for LHD:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        H19-12 (TR) - H13-3 (ER) Always Below 1 Ω
        H19-11 (TL) - H13-4 (EL) Always Below 1 Ω
        H19-13 (CR) - H13-8 (SW) Always Below 1 Ω
        H19-15 (EL) - Body ground Always Below 1 Ω
        H13-3 (ER) - Body ground Always 10 kΩ or higher
        H13-4 (EL) - Body ground Always 10 kΩ or higher
        H13-8 (SW) - Body ground Always 10 kΩ or higher

    3. for RHD:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        H19-20 (TR) - H13-3 (ER) Always Below 1 Ω
        H19-19 (TL) - H13-4 (EL) Always Below 1 Ω
        H19-18 (CR) - H13-8 (SW) Always Below 1 Ω
        H19-16 (EL) - Body ground Always Below 1 Ω
        H13-3 (ER) - Body ground Always 10 kΩ or higher
        H13-4 (EL) - Body ground Always 10 kΩ or higher
        H13-8 (SW) - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR