LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2017 >> Prius Three Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Lighting System (W/ AFS) - Diagnostic Codes & Circuit Tests) >> LIGHTING SYSTEM (w/ AFS) >> Circuit Tests >> Turn Signal Switch Circuit [12/2018 -] >> Procedure

Turn Signal Switch Circuit [12/2018 -]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Prius, 2021 Toyota Prius, 2020 Toyota Prius, and 2019 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Meter / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Turn Signal Switch (Right) Turn signal switch (right) signal OFF or ON OFF: Turn signal switch (right) off
      ON: Turn signal switch (right) on
      -
      Turn Signal Switch (Left) Turn signal switch (left) signal OFF or ON OFF: Turn signal switch (left) off
      ON: Turn signal switch (left) on
      -
      Turn Switch Signal (Full Turn) Turn signal switch (full turn) signal OFF or ON OFF: Turn signal switch (left and right) off
      ON: Turn signal switch (left or right) on
      -

      Body Electrical > Combination Meter > Data List 

      Tester Display
      Turn Signal Switch (Right)
      Turn Signal Switch (Left)
      Turn Switch Signal (Full Turn)

      OK

      Normal conditions listed above are displayed.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2018 -] 

    Result: 

    NG 

    See step  2

  2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY 
    1. Remove the headlight dimmer switch assembly.

      Refer to REMOVAL [12/2018 - 07/2020] , or refer to REMOVAL [07/2020 -]

    2. Inspect the headlight dimmer switch assembly.

      Refer to INSPECTION [11/2015 -]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY. Refer to  REMOVAL [12/2018 - 07/2020]  , or refer to  REMOVAL [07/2020 -] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE) OR BODY GROUND) 
    1. Disconnect the F7 combination meter assembly (meter circuit plate) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      & Routing (F64, F7)

      (F64)

      (F7)

      Tester Connection Condition Specified Condition
      F64-12 (TR) - F7-5 (ER) Always Below 1 Ω
      F64-11 (TL) - F7-11 (EL) Always Below 1 Ω
      F64-13 (CR) - F7-9 (SW) Always Below 1 Ω
      F64-12 (TR) or F7-5 (ER) - Body ground Always 10 kΩ or higher
      F64-11 (TL) or F7-11 (EL) - Body ground Always 10 kΩ or higher
      F64-13 (CR) or F7-9 (SW) - Body ground Always 10 kΩ or higher
      F64-15 (EL) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2018 -] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR