СИСТЕМА ЗАЖИГАНИЯ ПРОВЕРКА БЕЗ СНЯТИЯ С АВТОМОБИЛЯ

PROCEDURE

1. PERFORM SPARK TEST

   
   

   1. Check for DTCs Click here.

      Note

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

   2. Check if sparks occur.

      
      

      1. Remove the 6 spark plugs Click here.

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

      3. Remove the engine room relay block cover.

      4. Remove the circuit opening relay from the engine room relay block.

      5. Ground the spark plug.

      6. 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, push the engine switch 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.

      7. 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 PLUG

   
   

   1. 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 a spark test on each ignition coil with igniter.

         
         

         1. If there is a cylinder where sparks do not occur, replace its ignition coil with the ignition coil of a cylinder where sparks occur normally.

         2. Crank the engine and visually check that sparks occur at the cylinder with the normally operating ignition coil.

            Result

            Result	Proceed to
            OK	Replace ignition coil with igniter
            NG	Go to next step

      3. Check the power supply to the ignition coil with igniter.

         
         

         1. Turn the engine switch on (IG).

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

            Result

            Result	Proceed to
            OK	Replace ignition coil with igniter
            NG	Go to next step

      4. Inspect the spark plug.

         
         

         1. Replace the spark plug with a normal one.

         2. Perform a spark test again.

            Result

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

   2. Check the VVT sensor for intake side (See page ) and VVT sensor for exhaust side Click here.

   3. Check the crankshaft position sensor Click here.

   4. Install the 6 spark plugs Click here.

   5. Install the circuit opening relay.

   6. Install the engine room relay block cover.

3. INSPECT SPARK PLUG

   Note

   
   

   • Do not use a wire brush for cleaning.

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

   
   

   1. 

      *1

      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

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

   2. Alternative inspection method:

      
      

      1. Start the engine.*

      2. Quickly accelerate the engine to 4000 rpm 5 times.*

         Note

         *: Do not perform this step if P0300 (misfire detection) or a related DTC is stored.

      3. Remove the spark plug.

      4. 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 on its threads and insulator.

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

      Recommended Spark Plug
      Manufacturer Product DENSO made SK20HR11 or SK16HR11

      Note

      When replacing a spark plug, replace it with the same type of spark plug that is installed on the vehicle.

   4. 

      Clean the spark plugs.

   5. Check the spark plug electrode gap.

      Maximum electrode gap for used spark plug
      1.3 mm (0.0512 in.)

      If the gap is more than the maximum, replace

      Electrode gap for new spark plug
      1.0 to 1.1 mm (0.0394 to 0.0433 in.)