IGNITION SYSTEM ON-VEHICLE INSPECTION

PERFORM SPARK TEST

1. Check for DTCs Click here.

   Note

   If any DTC is present, perform troubleshooting in accordance with the procedure for that DTC.

2. Remove the ignition coils and spark plugs Click here.

3. Disconnect the 6 fuel injector connectors.

   

4. Install the spark plug into the ignition coil, and then connect the ignition coil connector.

   

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.

     Cranking will stop if the engine switch is pushed again for models with cranking holding function.

   • If a spark plug has been struck or dropped, replace it.

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

   Tech Tips

   If spark does not occur for any cylinder, perform the following inspect Ignition Coil and Spark Test procedure.

7. Connect the 6 fuel injector connectors.

8. Install the spark plugs and ignition coils Click here.

9. Clear the DTCs Click here.

INSPECT IGNITION COIL AND SPARK TEST

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

   Result
   Result Action NG Connect securely OK Go to next step

2. Perform a spark test on each ignition coil.

   1. Replace the ignition coil with a known good one.

   2. Perform the spark test again.

      Result
      Result Action NG Go to next step OK Replace ignition coil

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 Proceed to NG Inspect the ignition system Click here. OK Replace spark plug

CHECK SPARK PLUG

1. Check the electrode using a megohmmeter.

   

   Text in Illustration

   *1

   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 more

      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. Quickly accelerate the engine to 4000 rpm 5 times.

   2. Remove the spark plug Click here.

   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.

   4. Install the spark plug Click here.

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 FK20HR11

4. Reference.

   1. Check the spark plug electrode gap.

      

      Maximum Electrode Gap for Used Spark Plug
      1.4 mm (0.0551 in.)

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

      Note

      Never attempt to adjust the gap of a used

      Electrode Gap for New Spark Plug
      1.0 to 1.1 mm (0.0394 to 0.0433 in.)

5. Clean the spark plugs.

   

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

   Standard Air Pressure
   588 kPa (6.0 kgf/cm2, 85 psi)

   Standard 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.