Ignition System On-Vehicle Inspection

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
3Ur-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. PERFORM SPARK TEST

  2. INSPECT SPARK PLUG

Ignition System -- On-Vehicle Inspection



1. PERFORM SPARK TEST

  1. Check for DTCs (Click here).

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

  1. Check if sparks occur.

    1. Remove the ignition coils and spark plugs (Click here).

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

    3. Disconnect the 8 injector connectors.

    4. Ground the spark plug.

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

      NOTICE:
      1. Be sure to ground the spark plug when checking.
      2. If the ignition coil has been struck or dropped, replace it.
      3. Do not crank the engine for more than 2 seconds.

  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

  1. 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

  1. Check spark plug.

    Result
    Result
    		Proceed to
    NG
    		Replace spark plug
    OK
    		Go to next step

  1. 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
      NG
      		Check wiring between engine switch and ignition coil with igniter
      OK
      		Go to next step

  1. Check the VVT sensor for intake side (Click here).

  1. Check the VVT sensor for exhaust side (Click here).

  1. Check the camshaft position sensor (Click here).

  1. Check the crankshaft position sensor (Click here).

  1. Check the IGT signal circuit (Click here).

  1. Connect the 8 injector connectors.

  1. Install the ignition coils and spark plugs (Click here).



2. INSPECT SPARK PLUG
NOTICE:
  1. Do not use a wire brush for cleaning.
  2. Do not attempt to adjust the electrode gap of a used spark plug.


  1. Check the electrode.



      Land Cruiser. Urj200, 202 Grj200 Vdj200.3Ur-Fe Engine Control.Sfi System.Ignition System On-Vehicle Inspection

    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
      Text in Illustration
      *1
      		Ground
      If the insulation resistance is below the specified range, replace the spark plug.
      HINT:
      If a megohmmeter is not available, perform the following simple inspection instead.

  1. Alternative inspection method:

    1. Quickly accelerate the engine to 4000 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.



    Land Cruiser. Urj200, 202 Grj200 Vdj200.3Ur-Fe Engine Control.Sfi System.Ignition System On-Vehicle Inspection

  1. 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
    		Type
    DENSO made
    		SK20HR11
    HINT:
    Maximum electrode gap for a used spark plug: 1.3 mm (0.0512 in.).
    If the gap is more than the maximum, replace the spark plug.
    Electrode gap for a new spark plug: 1.0 to 1.1 mm (0.0394 to 0.0433 in.).
    NOTICE:
    If 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.
    If the electrode has traces of wet carbon, allow it to dry and then clean it with a spark plug cleaner.
    Standard air pressure:
    588 kPa (6.0 kgf/cm2, 85 psi)
    Standard duration:
    20 seconds or less
    HINT:
    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.