IGNITION SYSTEM ON-VEHICLE INSPECTION


  1. PERFORM SPARK TEST


    1. Check for DTCs.

      Note

      If a DTC is present, perform troubleshooting procedures for that DTC.

    2. Check if sparks occur.


      1. Remove the front seat assembly (for Hi-back Seat Type : Click here (for Low-back Seat Type : Click here (for Split Bench Seat Type : Click here (for Center Seat Type : Click here.

      2. Remove the front door scuff plate RH.

      3. Remove the 5 bolts and the engine service hole cover.

      4. Remove the ignition coil.

      5. Remove the spark plug.

      6. Install the spark plug to the ignition coil and connect the ignition coil connector.

      7. Disconnect the 4 injector connectors.

      8. Ground the spark plug.

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

        Note


        • Be sure to ground the spark plug before checking.

        • If the ignition coil has been struck or dropped, replace it.

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

    3. Spark test flowchart.


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

        Result
        Result Proceed to
        NG Connect securely
        OK Go to next step
      2. Perform spark test on each ignition coil with igniter.


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

        2. Perform spark test again.

        Result
        Result Proceed to
        OK Replace ignition coil with igniter
        NG Go to next step
      3. Check the power supply to ignition coil with igniter.


        1. Turn the ignition switch ON.

        2. Check that there is battery voltage at the ignition coil positive (+) terminal.

        Result
        Result Proceed to
        NG Check wiring between engine switch and ignition coil with igniter
        OK Go to next step
      4. Check the camshaft position sensor.


        1. Measure the resistance according to the value(s) in the table below.

        Standard resistance
        950 to 1250 Ω at 20°C (68°F)
        Result
        Result Proceed to
        NG Replace camshaft position sensor
        OK Go to next step
      5. Check the of crankshaft position sensor.


        1. Measure the resistance according to the value(s) in the table below.

        Standard resistance
        1850 to 2450 Ω at 20°C (68°F)
        Result
        Result Proceed to
        NG Replace crankshaft position sensor
        OK Go to next step
      6. Check IGT signal from the ECM.

        Result
        Result Proceed to
        NG Check ECM
        OK Repair wiring between ignition coil and ECM
    4. Install the ignition coil.


      1. Using a 16 mm plug wrench, install the spark plug.

        Torque:
        18 N*m  { 183 kgf*cm, 13 ft.*lbf }
      2. Install the ignition coil.

        Torque:
        9.0 N*m  { 92 kgf*cm, 80 in.*lbf }
      3. Install the engine service hole cover with the 5 bolts.

      4. Install the front door scuff plate RH.

      5. Install the front seat assembly (for Hi-back Seat Type : Click here (for Low-back Seat Type : Click here (for Split Bench Seat Type : Click here (for Center Seat Type : Click here.

  2. CHECK SPARK PLUG (for Unleaded Gasoline Specification Vehicle)

    Note


    • Do not use a wire brush for cleaning.

    • Do not attempt to adjust the electrode gap of a used spark plug.


    1. A01BBE3E06

      Check the electrode.


      1. Using a megohmmeter, measure the insulation resistance.

        Insulation resistance
        10 MΩ or more

        Tech Tips

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

    2. A01BCI5

      Alternative inspection method.


      1. Quickly accelerate the engine to 4,000 rpm 5 times.

      2. Remove the spark plug.

      3. Visually check the spark plug.

        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 damage, replace the spark plug. If not, reinstall the spark plug.

      Recommended spark plug
      Manufacture Product
      DENSO made SK20HR-A11
    4. A01BGBFE01

      Check the spark plug electrode gap.

      Maximum electrode gap for used spark plug
      1.3 mm (0.051 in.)

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

      Electrode gap for new spark plug
      1.0 to 1.1 mm (0.039 to 0.043 in.)

      Note

      When adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip. Never attempt to adjust the gap of a used plug.

    5. A01BAJKE01

      Clean the spark plugs.

      If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.

      Air pressure
      588 kPa (6 kgf*cm2, 85 psi)
      Duration
      20 seconds or less

      Tech Tips

      Only use the spark plug cleaner when the electrode is free of oil. If the electrode has traces of oil, use gasoline to clean off the oil before using the spark plug cleaner.

  3. CHECK SPARK PLUG (for Leaded Gasoline Specification Vehicle)


    1. A01BBE3E06

      Check the electrode.


      1. Using a megohmmeter, measure the insulation resistance.

        Insulation resistance
        10 MΩ or more

        Tech Tips

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

    2. A01BA75E01

      Alternative inspection method:


      1. Quickly accelerate the engine to 4,000 rpm 5 times.

      2. Remove the spark plug.

      3. Visually check the spark plug.

        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 damage, replace the spark plug. If not, reinstall the spark plug.

      Recommended spark plug
      Manufacture Product
      DENSO made K20HR-U11
      NGK made LFR6C-11
    4. A01BFK1E01

      Check the spark plug electrode gap.

      Maximum electrode gap for used spark plug
      1.3 mm (0.051 in.)

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

      Electrode gap for new spark plug
      1.1 mm (0.043 in.)

      Note

      When adjusting the gap of a new spark plug, bend only the base of the ground electrode. Never attempt to adjust the gap of a used plug.

    5. A01BAJKE01

      Clean the spark plugs.

      If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.

      Air pressure
      588 kPa (6 kgf*cm2, 85 psi)
      Duration
      20 seconds or less

      Tech Tips

      Only use the spark plug cleaner when the electrode is free of oil. If the electrode has traces of oil, use gasoline to clean off the oil before using the spark plug cleaner.