IGNITION SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

Tech Tips

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


PROCEDURE


  1. PERFORM SPARK TEST


    1. Check for DTCs.


      Note

      If any DTC is output, perform troubleshooting procedures for that DTC.

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

      Click here

    3. A01XP6B

      Disconnect the injector connector (for Port Injection).

      Note

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

    4. A01XOHW

      Disconnect the 2 injector connectors (for Direct Injection).

      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 connect the connector.

    6. Ground the spark plug.

    7. Visually check that sparks occur while the engine is being cranked.

      Note


      • When performing the inspection, be sure to ground the hexagonal portion or the threaded portion of the spark plug.

      • Do not crank the engine for more than 2 seconds.


        • For vehicles with a cranking hold function, turn the engine switch off during cranking to stop cranking.

      • If an ignition coil assembly is struck or dropped, replace it with a new one.

      • If a spark plug is struck or dropped, replace it with a new one.

    8. If sparks do not occur normally in 1 or more cylinders, perform the "Ignition Coil and Spark Test" below.

  2. INSPECT IGNITION COIL AND SPARK TEST

    Tech Tips

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



    1. Spark test flowchart.


      1. Check that the wire harness side connector of the ignition coil assembly with igniter is securely connected.

        Result
        Result Proceed to
        NG Connect securely
        OK Go to next step

      2. Perform a spark test on a malfunctioning ignition coil assembly with igniter.

        Tech Tips

        Perform "Inspection After Repair" after replacing an ignition coil assembly.



        1. Replace the ignition coil assembly with a normal one.

        2. Perform the spark test again.

        Result
        Result Proceed to
        OK Replace ignition coil assembly
        NG Go to next step

      3. Inspect the spark plugs.

        Tech Tips

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



        1. If there is a cylinder in which ignition does not occur, interchange the spark plug of that cylinder and the spark plug of a cylinder in which ignition properly occurs.

        2. Check that sparks occur in the cylinder in which the properly functioning spark plug was installed.

          Result
          Result Proceed to
          OK Replace the spark plug
          NG

          Inspect the ignition system

        Note


        • If an ignition coil assembly is struck or dropped, replace it with a new one.

        • If a spark plug is struck or dropped, replace it with a new one.

      4. Connect the 2 injector connectors (for Direct Injection).

      5. Connect the injector connector (for Port Injection).

      6. Install the 4 ignition coil assemblies and 4 spark plugs.

        Click here

    2. Clear DTCs.


  3. CHECK SPARK PLUG

    Note


    • Do not damage the iridium and platinum tips.

    • Check the iridium tip visually since the iridium tip may be damaged.

    • Do not adjust the gap since iridium plugs are used.

    • Replace with new spark plugs if damaged at all.

    • Replace with new spark plugs if extremely dirty due to sludge, etc.

    • Replace with a new spark plug if it is dropped or if it receives a strong impact.

    • 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.

    Tech Tips

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



    1. Visually check the spark plug.


      1. Start the engine.

      2. Increase the engine speed to 2500 rpm and then let the engine speed decrease. Perform this operation 5 times.*

        Note

        *: Do not perform this step if P030000 (misfire detection) or a related DTC is stored.

      3. Remove the spark plug.

        Click here

      4. Check the spark plug for any damage on its threads and insulator.

        If there is damage, replace the spark plug.

        Recommended Spark Plug
        Manufacturer Spark Plug Type
        NGK DILFR7K9G
      5. A01XN0UC10
        *a Iridium Chip
        *b Spark Plug Electrode Gap
        *c Platinum Chip

        Check the spark plug electrode gap.

        Maximum electrode gap for used spark plug
        1.1 mm (0.0433 in.)
        Electrode gap for new spark plug
        0.8 to 0.9 mm (0.0315 to 0.0354 in.)

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

        Tech Tips

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


    2. Install the spark plug.

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