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On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT TURN SIGNAL FLASHER CIRCUIT 
    1. Check the power source circuit and ground circuit.
      1. Remove the turn signal flasher relay from the instrument panel junction block (see Fig 1).
      2. Measure the voltage and resistance of the instrument panel junction block.

        Standard voltage 

        VOLTAGE SPECIFIED CONDITIONS

        Tester Connection Condition Specified Condition
        Instrument panel junction block turn signal flasher relay terminal 1 (IG) - Body ground Ignition switch OFF Below 1 V
        Instrument panel junction block turn signal flasher relay terminal 1 (IG) - Body ground Ignition switch ON 10 to 14 V
        Instrument panel junction block turn signal flasher relay terminal 4 (+B) - Body ground Always 10 to 14 V

        Standard resistance 

        RESISTANCE SPECIFIED CONDITIONS

        Tester Connection Specified Condition
        Instrument panel junction block turn signal flasher relay terminal 7 (GND) - Body ground Below 1 Ω
        Fig 1: Identifying Turn Signal Flasher Relay Terminals
        G04490919Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the output operation signal.
      1. Install the turn signal flasher relay onto the instrument panel junction block.
        Fig 2: Identifying Instrument Panel Junction Block Connectors (Front And Rear View)
        G04490920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Measure the voltage of the instrument panel junction block.

        Standard voltage 

        VOLTAGE SPECIFIED CONDITIONS

        Tester Connection Condition Specified Condition
        IA-27 (LL) - Body ground Hazard warning switch OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IA-27 (LL) - Body ground Turn signal switch (left turn) OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IA-28 (LR) - Body ground Hazard warning switch OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IA-28 (LR) - Body ground Turn signal switch (right turn) OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IB-14 (LL) - Body ground Hazard warning switch OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IB-14 (LL) - Body ground Turn signal switch (left turn) OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IB-31 (LR) - Body ground Hazard warning switch OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IB-31 (LR) - Body ground Turn signal switch (right turn) OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IS-11 (EL) - Body ground Turn signal switch (left turn) OFF --> ON 10 to 14 V --> 0 V
        IS-12 (ER) - Body ground Turn signal switch (right turn) OFF --> ON 10 to 14 V --> 0 V
        IS-13 (LL) - Body ground Hazard warning switch OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IS-13 (LL) - Body ground Turn signal switch (left turn) OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IS-16 (LR) - Body ground Hazard warning switch OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IS-16 (LR) - Body ground Turn signal switch (right turn) OFF --> ON 0 V --> 10 to 14 V (60 to 120 times per minute)
        IS-17 (EHW) - Body ground Hazard warning switch OFF --> ON 10 to 14 V --> 0 V

        If the result is not as specified, replace the turn signal flasher relay.

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