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On-Vehicle Inspection [02/2017 - 10/2017]: Procedure

  1. PERFORM SPARK TEST 
    WARNING:
    • When working near the engine room while the engine has started or the power source mode is ignition switch to ON (IG), do not touch the fan and generator V belt or rotating components such as the fan, etc.
      GTY600652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Touching the fan and generator V belt or rotating components such as the fan, etc. could result in your hand or clothing getting caught and pulled in.
    • When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.
      GTY563663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Touching high-temperature areas such as the engine and exhaust manifold could result in burns.

    HINT: 

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

    Refer to INITIALIZATION [02/2017 - ]

    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [02/2017 - ]

      NOTE:

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

    2. Remove the 4 ignition coil assemblies and 4 spark plugs.

      Refer to REMOVAL [02/2017 - 10/2017]

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

      HINT: 

      Arrange the removed parts in the correct order.

    3. Disconnect the 4 fuel injector assembly connectors.
      GTY762299Courtesy 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. Install the spark plug into the ignition coil assembly, and then connect the ignition coil assembly connector.
      GTY762304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Ground the spark plug.
    6. 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 a spark plug has been struck or dropped, replace it.
      • If an ignition coil assembly has been struck or dropped, replace it.
    7. If spark does not occur, perform the following procedure.
    8. Connect the 4 fuel injector assembly connectors.
    9. Install the 4 spark plugs and 4 ignition coil assemblies.

      Refer to INSTALLATION [02/2017 - 10/2017]

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

      HINT: 

      Install the same parts to their original positions.

    10. Check for DTCs.

      Refer to DTC CHECK / CLEAR [02/2017 - ]

    11. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2017 - ]

  2. INSPECT IGNITION COIL ASSEMBLY AND SPARK TEST 
    WARNING:
    • When working near the engine room while the engine has started or the power source mode is ignition switch to ON (IG), do not touch the fan and generator V belt or rotating components such as the fan, etc.
      GTY600652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Touching the fan and generator V belt or rotating components such as the fan, etc. could result in your hand or clothing getting caught and pulled in.
    • When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.
      GTY563663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Touching high-temperature areas such as the engine and exhaust manifold could result in burns.

    HINT: 

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

    Refer to INITIALIZATION [02/2017 - ]

    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
    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 ignition system
        Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit [02/2017 - ]
        OK Replace spark plug
        NOTE:
        • If an ignition coil assembly has been struck or dropped, replace it.
        • If a spark plug has been struck or dropped, replace it.
    4. Connect the 4 fuel injector assembly connectors.
    5. Install the 4 spark plugs and 4 ignition coil assemblies.

      Refer to INSTALLATION [02/2017 - 10/2017]

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

      HINT: 

      Install the same parts to their original positions.

    6. Check for DTCs.

      Refer to DTC CHECK / CLEAR [02/2017 - ]

    7. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2017 - ]

  3. INSPECT SPARK PLUG 
    WARNING:
    • When working near the engine room while the engine has started or the power source mode is ignition switch to ON (IG), do not touch the fan and generator V belt or rotating components such as the fan, etc.
      GTY600652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Touching the fan and generator V belt or rotating components such as the fan, etc. could result in your hand or clothing getting caught and pulled in.
    • When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.
      GTY563663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Touching high-temperature areas such as the engine and exhaust manifold could result in burns.
    NOTE:
    • Do not damage the iridium tip and platinum tip.
    • Check the iridium tip visually since the iridium tip may be damaged.
    • Never attempt to adjust the electrode gap of a used spark plug.
    • Replace with new spark plugs if extremely dirty due to sludge, etc.
    • Replace with new spark plugs if damaged at all.
    • Replace with a new spark plug if it has been struck or dropped.
    • When replacing with a new spark plug, do not remove the cap for protecting the spark plug tip until it is installed to the engine.
    • Do not use a wire brush for cleaning.

    HINT: 

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

    Refer to INITIALIZATION [02/2017 - ]

    1. Check the electrode.
      GTY769964Courtesy 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 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, P0301, P0302, P0303, P0304 (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, P0301, P0302, P0303, P0304 (Cylinder Misfire Detected).

      3. Remove the spark plug.

        Refer to REMOVAL [02/2017 - 10/2017]

      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 SC16HR11
    4. Check the spark plug electrode gap.
      GTY424517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Spark Plug Electrode Gap

      Maximum Electrode Gap for Used Spark Plug

      1.3 mm (0.0512 in.)

      NOTE:

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

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

      Electrode Gap for New Spark Plug

      1.0 to 1.1 mm (0.0394 to 0.0433 in.)

    5. Install the spark plug.

      Refer to INSTALLATION [02/2017 - 10/2017]

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

      Refer to INITIALIZATION [02/2017 - ]

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