LIGHTING SYSTEM Turn Signal Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A005CBBE03

PROCEDURE


  1. 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.

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

      OFF: Turn RH switch off

      ON: Turn RH switch on

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

      OFF: Turn LH switch off

      ON: Turn LH switch on

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

    A

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

    B

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

    Tech Tips

    Inspect the items that did not change as a result of monitoring the Data List.


    1. Remove the headlight dimmer switch assembly Click here.

    2. A005BL2E75
      Text in Illustration
      *a

      Component without harness connected

      (Headlight Dimmer Switch Assembly)

      for Light Control Switch LH Side Type:


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

        Standard Resistance
        Turn Signal Switch
        Tester Connection Condition Specified Condition
        13 (TR) - 12 (EL) Turn RH switch off 10 kΩ or higher
        15 (TL) - 12 (EL) Turn LH switch off 10 kΩ or higher
        13 (TR) - 12 (EL) Turn RH switch on Below 1 Ω
        15 (TL) - 12 (EL) Turn LH switch on Below 1 Ω
        OK
        Headlight dimmer switch assembly is normal.
    3. A005BL2E76
      Text in Illustration
      *a

      Component without harness connected

      (Headlight Dimmer Switch Assembly)

      for Light Control Switch RH Side Type:


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

        Standard Resistance
        Turn Signal Switch
        Tester Connection Condition Specified Condition
        16 (TR) - 19 (EL) Turn RH switch off 10 kΩ or higher
        18 (TL) - 19 (EL) Turn LH switch off 10 kΩ or higher
        16 (TR) - 19 (EL) Turn RH switch on Below 1 Ω
        18 (TL) - 19 (EL) Turn LH switch on Below 1 Ω
        OK
        Headlight dimmer switch assembly is normal.

    NG

    REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the L27 combination meter sub-assembly connector.

    2. for Light Control Switch LH Side Type:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L27-17 (B) - L47-13 (TR) Always Below 1 Ω
        L27-18 (B) - L47-15 (TL) Always Below 1 Ω
        L47-13 (TR) - Body ground Always 10 kΩ or higher
        L47-15 (TL) - Body ground Always 10 kΩ or higher
        L47-12 (EL) - Body ground Always Below 1 Ω

    3. for Light Control Switch RH Side Type:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L27-17 (B) - L47-16 (TR) Always Below 1 Ω
        L27-18 (B) - L47-18 (TL) Always Below 1 Ω
        L47-16 (TR) - Body ground Always 10 kΩ or higher
        L47-18 (TL) - Body ground Always 10 kΩ or higher
        L47-19 (EL) - Body ground Always Below 1 Ω

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR