LIGHTING SYSTEM Turn Signal Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01EU0RE02

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Combination Meter / Data List.

    5. Read the display on the intelligent tester.

      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

      		 -
      OK
      Normal conditions listed above are displayed.

    NG

    INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY Click here

    OK

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

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY


    1. Remove the headlight dimmer switch assembly Click here.

    2. for LHD:


      1. A01ESR2E07
        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 Switch 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
        12 (TR) - 15 (EL) Turn signal switch in right turn position Below 1 Ω
        11 (TL) - 15 (EL) Turn signal switch in left turn position Below 1 Ω

    3. for RHD:


      1. A01ESR2E08
        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 Switch 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
        20 (TR) - 16 (EL) Turn signal switch in right turn position Below 1 Ω
        19 (TL) - 16 (EL) Turn signal switch in 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 I17 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
        I25-12 (TR) - I17-3 (ER) Always Below 1 Ω
        I25-11 (TL) - I17-4 (EL) Always Below 1 Ω
        I25-15 (EL) - Body ground Always Below 1 Ω
        I17-3 (ER) - Body ground Always 10 kΩ or higher
        I17-4 (EL) - 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
        I25-20 (TR) - I17-3 (ER) Always Below 1 Ω
        I25-19 (TL) - I17-4 (EL) Always Below 1 Ω
        I25-16 (EL) - Body ground Always Below 1 Ω
        I17-3 (ER) - Body ground Always 10 kΩ or higher
        I17-4 (EL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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