IGNITION SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. PERFORM SPARK TEST

    CAUTION:


    • A001QX5

      When working near the engine room while the engine has started or the power source mode is power switch on (IG), do not touch the rotating components such as the fan, etc.

    • Touching rotating components such as the fan, etc. could result in your hand or clothing getting caught and pulled in.

    • A001RVS

      When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.

    • Touching high-temperature areas such as the engine and exhaust manifold could result in burns.

    Tech Tips

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

    Click here


    1. Check for DTCs.

      Click here

      Note

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

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

      Click here

      Note

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

      Tech Tips

      Arrange the removed parts in the correct order.

    3. A001QEE

      Disconnect the 4 fuel injector assembly connectors.

      Note

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

    4. A001P7X

      Install the spark plug to the ignition coil assembly, and then connect the ignition coil assembly connector.

    5. Put the engine in inspection mode (maintenance mode).

      Click here

    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.

      Tech Tips

      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.

      Click here

      Note

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

      Tech Tips

      Install the same parts to their original positions.

    10. Check for DTCs.

      Click here

    11. Clear the DTCs.

      Click here

  2. INSPECT IGNITION COIL ASSEMBLY AND SPARK TEST

    CAUTION:


    • A001QX5

      When working near the engine room while the engine has started or the power source mode is power switch on (IG), do not touch the rotating components such as the fan, etc.

    • Touching rotating components such as the fan, etc. could result in your hand or clothing getting caught and pulled in.

    • A001RVS

      When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.

    • Touching high-temperature areas such as the engine and exhaust manifold could result in burns.

    Tech Tips

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

    Click here


    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

        Click here

        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

        Click here

        OK

        Replace spark plug

        Click here

        Note

        If an ignition coil assembly or 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.

      Click here

      Note

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

      Tech Tips

      Install the same parts to their original positions.

    6. Check for DTCs.

      Click here

    7. Clear the DTCs.

      Click here

  3. INSPECT SPARK PLUG

    CAUTION:


    • A001QX5

      When working near the engine room while the engine has started or the power source mode is power switch on (IG), do not touch the rotating components such as the fan, etc.

    • Touching rotating components such as the fan, etc. could result in your hand or clothing getting caught and pulled in.

    • A001RVS

      When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.

    • Touching high-temperature areas such as the engine and exhaust manifold could result in burns.

    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.

    Tech Tips

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

    Click here


    1. A001NZDC34
      *a Body Ground

      Check the electrode.


      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

        Tech Tips

        If a megohmmeter is not available, perform the following simple inspection instead.

    2. Alternative inspection method.


      1. Put the engine in inspection mode (maintenance mode).

        Click here

      2. Start the engine.

        Note

        Do not perform this step when any of the following DTCs are output: P030000, P030027, P030085, P030100, P030200, P030300, P030400 (Cylinder Misfire Detected).

      3. Quickly accelerate the engine to 2500 rpm 5 times.

        Note

        Do not perform this step when any of the following DTCs are output: P030000, P030027, P030085, P030100, P030200, P030300, P030400 (Cylinder Misfire Detected).

      4. Remove the spark plug.

        Click here

      5. Visually check the spark plug.

        Tech Tips

        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 FC16HR-C9
    4. A001R02C06
      *a Spark Plug Electrode Gap

      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
      0.8 to 0.9 mm (0.0315 to 0.0354 in.)

    5. Install the spark plug.

      Click here

  4. PERFORM INITIALIZATION


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

      Click here