IGNITION SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

CAUTION:

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 fan when working in the engine compartment with the engine running or the engine switch on (IG).

B006PUQ

PROCEDURE


  1. PERFORM SPARK TEST


    1. Check for DTCs.

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      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.

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    3. B006M6SC01
      *a No. 5 Engine Wire Connector
      *b No. 6 Engine Wire Connector
      *c No. 7 Engine Wire Connector

      Disconnect the 2 No. 5 engine wire connectors (for Port Injection).

      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).

      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.

    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 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.

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    11. Check for DTCs.

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    12. Clear the DTCs.

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  2. INSPECT IGNITION COIL ASSEMBLY AND SPARK TEST

    Tech Tips

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

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    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

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        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.

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    7. Check for DTCs.

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    8. Clear the DTCs.

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  3. INSPECT SPARK PLUG

    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.

    Tech Tips

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

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    1. B006MMTC34
      *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 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: P030000, P030027, P030085, P030100, P030200, P030300, P030400, P030500, P030600 (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: P030000, P030027, P030085, P030100, P030200, P030300, P030400, P030500, P030600 (Cylinder Misfire Detected).

      3. Remove the spark plug.

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      4. 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 FK20HBR8
    4. B006KT7C01
      *a Spark Plug Electrode Gap
      *b Iridium Tip
      *c Platinum Tip

      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.)

    5. Install the spark plug.

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  4. PERFORM INITIALIZATION


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

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