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LIGHTING SYSTEM Turn Signal Switch Circuit

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DTC Code DTC Name
  Turn Signal Switch Circuit
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DESCRIPTION

The combination meter assembly receives the turn signal switch information via the windshield wiper switch assembly and controls the turn signal lights.

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WIRING DIAGRAM

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PROCEDURE


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    READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Read the display on the GTS.


      1. Body Electrical > Combination Meter > Data List
        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

        		 -




      1. Body Electrical > Combination Meter > Data List
        Tester Display
        Turn Signal Switch (Right)
        Turn Signal Switch (Left)





      OK
      Normal conditions listed above are displayed.
      Result
      Proceed to
      OK
      NG

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    INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY


    1. Remove the headlight dimmer switch assembly.

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    2. for Light Control Switch LH Side Type:


      1. A0021RZC09
        *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
        15 (TR) - 16 (E) Turn signal switch in neutral position 10 kΩ or higher
        14 (TL) - 16 (E) Turn signal switch in neutral position 10 kΩ or higher
        17 (CR) - 16 (E) Turn signal switch in neutral position 10 kΩ or higher
        15 (TR) - 16 (E) Turn signal switch in right turn position Below 1 Ω
        17 (CR) - 16 (E) Turn signal switch in full right turn position Below 1 Ω
        14 (TL) - 16 (E) Turn signal switch in left turn position Below 1 Ω
        17 (CR) - 16 (E) Turn signal switch in full left turn position Below 1 Ω

    3. for Light Control Switch RH Side Type:


      1. A01D057C04
        *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
        23 (TR) - 21 (E) Turn signal switch in neutral position 10 kΩ or higher
        22 (TL) - 21 (E) Turn signal switch in neutral position 10 kΩ or higher
        20 (CR) - 21 (E) Turn signal switch in neutral position 10 kΩ or higher
        23 (TR) - 21 (E) Turn signal switch in right turn position Below 1 Ω
        20 (CR) - 21 (E) Turn signal switch in full right turn position Below 1 Ω
        22 (TL) - 21 (E) Turn signal switch in left turn position Below 1 Ω
        20 (CR) - 21 (E) Turn signal switch in full left turn position Below 1 Ω
      Result
      Proceed to
      OK
      NG

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    CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - WINDSHIELD WIPER SWITCH ASSEMBLY)


    1. Disconnect the K24 windshield wiper switch assembly connector.

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

      Standard Resistance
      Table 1. for Light Control Switch LH Side Type
      Tester Connection Condition Specified Condition
      K23-16 (E) - K24-6 (GND1) Always Below 1 Ω
      K23-14 (TL) - K24-13 (TL1) Always Below 1 Ω
      K23-15 (TR) - K24-14 (TR1) Always Below 1 Ω
      K23-17 (CR) - K24-12 (CR1) Always Below 1 Ω
      K23-16 (E) - Body ground Always 10 kΩ or higher
      K23-14 (TL) - Body ground Always 10 kΩ or higher
      K23-15 (TR) - Body ground Always 10 kΩ or higher
      K23-17 (CR) - Body ground Always 10 kΩ or higher
      Table 2. for Light Control Switch RH Side Type
      Tester Connection Condition Specified Condition
      K23-21 (E) - K24-6 (GND1) Always Below 1 Ω
      K23-22 (TL) - K24-13 (TL1) Always Below 1 Ω
      K23-23 (TR) - K24-14 (TR1) Always Below 1 Ω
      K23-20 (CR) - K24-12 (CR1) Always Below 1 Ω
      K23-21 (E) - Body ground Always 10 kΩ or higher
      K23-22 (TL) - Body ground Always 10 kΩ or higher
      K23-23 (TR) - Body ground Always 10 kΩ or higher
      K23-20 (CR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the K4 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K24-16 (TR2) - K4-4 (ER) Always Below 1 Ω
      K24-17 (TL2) - K4-5 (EL) Always Below 1 Ω
      K24-16 (TR2) - Body ground Always 10 kΩ or higher
      K24-17 (TL2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR