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On-Vehicle Inspection [09/2015 - ]: Procedure

  1. PERFORM SPARK TEST 
    WARNING:

    To prevent injury due to contact with an operating V-ribbed belt or cooling fan, keep your hands and clothing away from the V-ribbed belt and cooling fans when working in the engine compartment with the engine running or the engine switch on (IG).

    GTY651773Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

      NOTE:

      If any DTCs are output, perform troubleshooting in accordance with the procedure for each DTC.

    2. Remove the 6 ignition coil assemblies and 6 spark plugs.

      Refer to REMOVAL [09/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019] , or refer to REMOVAL [08/2019 - ]

      NOTE:

      If an ignition coil assembly or spark plug has been struck or dropped, replace it.

      HINT: 

      Arrange the removed parts in the correct order.

    3. Disconnect the 2 No. 5 engine wire connectors (for Port Injection).
      GTY684674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Perform this step in order to stop fuel injection to prevent damage to the catalyst due to unburned fuel.

    4. Disconnect the No. 6 engine wire connector and No. 7 engine wire connector (for Direct Injection).
      GTY651771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Perform this step in order to stop fuel injection to prevent damage to the catalyst due to unburned fuel.

    5. Install the spark plug to the ignition coil assembly, and then connect the ignition coil assembly connector.
      GTY667660Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Ground the spark plug.
    7. Check that spark occurs at each spark plug while the engine is being cranked.
      NOTE:
      • Be sure to ground the spark plugs when checking them.
      • Do not crank the engine for more than 2 seconds.
      • If an ignition coil assembly or spark plug has been struck or dropped, replace it.

      HINT: 

      If spark does not occur, perform the following procedure.

    8. Connect the No. 6 engine wire connector and No. 7 engine wire connector (for Direct Injection).
    9. Connect the 2 No. 5 engine wire connectors (for Port Injection).
    10. Install the 6 spark plugs and 6 ignition coil assemblies.

      Refer to INSTALLATION [09/2015 - ]

      NOTE:

      If an ignition coil assembly or spark plug has been struck or dropped, replace it.

      HINT: 

      Install the same parts to their original positions.

    11. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

    12. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

  2. INSPECT IGNITION COIL ASSEMBLY AND SPARK TEST 

    HINT: 

    Perform "Inspection After Repair" after replacing a spark plug or ignition coil assembly.

    Refer to INITIALIZATION [09/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - ]

    1. Check that the ignition coil assembly connector is securely connected.

      Result

      Result Action
      NG Connect securely
      OK Go to next step
    2. Perform a spark test on each ignition coil assembly.
      1. Replace the ignition coil assembly with a known good one.
      2. Perform the spark test again.

        Result

        Result Action
        NG Go to next step
        OK Replace ignition coil assembly
        NOTE:

        If an ignition coil assembly or spark plug has been struck or dropped, replace it.

    3. Perform a spark test on each spark plug.
      1. Replace the spark plug with a known good one.
      2. Perform the spark test again.

        Result

        Result Action
        NG Inspect the ignition system
        Refer to DTC P0351-13: Ignition Coil "A" Circuit Open; DTC P0352-13: Ignition Coil "B" Circuit Open; DTC P0353-13: Ignition Coil "C" Circuit Open; DTC P0354-13: Ignition Coil "D" Circuit Open; DTC P0355-13: Ignition Coil "E" Circuit Open; DTC P0356-13: Ignition Coil "F" Circuit Open [09/2015 - 08/2019] , or refer to Ignition Circuit [08/2019 - ]
        OK Replace spark plug
        NOTE:

        If an ignition coil assembly or spark plug has been struck or dropped, replace it.

    4. Connect the No. 6 engine wire connector and No. 7 engine wire connector (for Direct Injection).
    5. Connect the 2 No. 5 engine wire connectors (for Port Injection).
    6. Install the 6 spark plugs and 6 ignition coil assemblies.

      Refer to INSTALLATION [09/2015 - ]

      NOTE:

      If an ignition coil assembly or spark plug has been struck or dropped, replace it.

      HINT: 

      Install the same parts to their original positions.

    7. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

    8. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2015 - ]

  3. INSPECT SPARK PLUG 
    NOTE:
    • Be careful not to damage the iridium tip or platinum tip of the spark plug.
    • Check the iridium tip visually as it is easily damaged.
    • Never attempt to adjust the electrode gap of a used spark plug.
    • If a spark plug is extremely dirty with oil, etc., replace it.
    • Replace a spark plug if it is damaged.
    • If a spark plug has been struck or dropped, replace it.
    • When installing a new spark plug, do not remove the protective cap from the spark plug tip until just before installing the spark plug to the engine.

    HINT: 

    Perform "Inspection After Repair" after replacing a spark plug.

    Refer to INITIALIZATION [09/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - ]

    1. Check the electrode.
      GTY499036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Body Ground
      1. Using a megohmmeter, measure the insulation resistance.

        Standard Insulation Resistance

        Tester Connection Condition Specified Condition
        Spark plug (terminal part) - Body ground Always 10 MΩ or higher

        HINT: 

        • If the result is not as specified, clean the spark plug with a spark plug cleaner and measure the resistance again.
        • If a megohmmeter is not available, perform the following simple inspection instead.
    2. Alternative inspection method.
      1. Start the engine.
        NOTE:

        Do not perform this step when any of the following DTCs are output: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00 (Cylinder Misfire Detected).

      2. Quickly accelerate the engine to 4000 rpm 5 times.
        NOTE:

        Do not perform this step when any of the following DTCs are output: P0300-00, P0300-27, P0300-85, P0301-00, P0302-00, P0303-00, P0304-00 (Cylinder Misfire Detected).

      3. Remove the spark plug.

        Refer to REMOVAL [09/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019] , or refer to REMOVAL [08/2019 - ]

      4. Visually check the spark plug.

        HINT: 

        If the electrode is dry, the spark plug is functioning properly. If the electrode is damp, proceed to the next step.

    3. Check the spark plug for any damage to its threads and insulator.

      If there is any damage, replace the spark plug.

      Recommended Spark Plug

      Manufacturer Spark Plug Type
      DENSO FK20HBR8
    4. Check the spark plug electrode gap.

      Maximum Electrode Gap for Used Spark Plug

      1.1 mm (0.0433 in.)

      NOTE:

      Never attempt to adjust the electrode gap of a used spark plug.

      If the electrode gap is more than the maximum, replace the spark plug.

      Standard Electrode Gap for New Spark Plug

      0.7 to 0.8 mm (0.0276 to 0.0315 in.)

      GTY510855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Spark Plug Electrode Gap
      *b Iridium Tip
      *c Platinum Tip
    5. Install the spark plug.

      Refer to INSTALLATION [09/2015 - ]

  4. PERFORM INITIALIZATION 
    1. Perform "Inspection After Repair" after replacing a spark plug or ignition coil assembly.

      Refer to INITIALIZATION [09/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - ]

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