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On-Vehicle Inspection [08/2015 - ]: Procedure

  1. PERFORM SPARK TEST 
    1. Check for DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] , or refer to DTC CHECK / CLEAR [08/2019 - ] ).
      NOTE:

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

    2. Check if sparks occur.
      1. Remove the 6 spark plugs (Refer to REMOVAL [08/2015 - ] ).
      2. Install the spark plug to the ignition coil assembly and connect the ignition coil assembly connector.
      3. Disconnect the fuel pump ECU connector (Refer to REMOVAL [08/2015 - ] ).
      4. Ground the spark plug.
      5. Visually check that sparks occur while the engine is being cranked.
        NOTE:
        • Be sure to ground the spark plug when checking.
        • Replace the ignition coil assembly if it receives an impact.
        • Do not crank the engine for more than 2 seconds.
    3. Check that the ignition coil assembly connector is securely connected.
      RESULT

      Result Proceed to
      NG Connect securely
      OK Go to next step
    4. Perform a spark test on each ignition coil assembly.
      1. If there is a cylinder where sparks do not occur, replace its ignition coil assembly with the one 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 assembly.
        RESULT

        Result Proceed to
        OK Replace ignition coil assembly
        NG Go to next step
    5. Inspect the spark plug.
      1. Replace the spark plug with a normal one.
      2. Perform spark test again.
        RESULT

        Result Proceed to
        OK Replace spark plug
        NG Go to next step
    6. Check power supply to ignition coil assembly.
      1. Turn the ignition switch to ON.
      2. Check that there is battery voltage at the ignition coil assembly positive (+) terminal.
        RESULT

        Result Proceed to
        NG Check wiring between ignition switch and ignition coil assembly
        OK Go to next step
    7. Check the VVT sensor for intake side (Refer to DTC P0340: Camshaft Position Sensor Circuit Malfunction; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); DTC P0345: Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0347: Camshaft Position Sensor "A" Circuit Low Input (Bank 2); DTC P0348: Camshaft Position Sensor "A" Circuit High Input (Bank 2) [08/2015 - 08/2019] , or refer to DTC P0340: Camshaft Position Sensor Circuit Malfunction; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); DTC P0345: Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0347: Camshaft Position Sensor "A" Circuit Low Input (Bank 2); DTC P0348: Camshaft Position Sensor "A" Circuit High Input (Bank 2) [08/2019 - ] ) and VVT sensor for exhaust side (Refer to DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1); DTC P0390: Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0392: Camshaft Position Sensor "B" Circuit Low Input (Bank 2); DTC P0393: Camshaft Position Sensor "B" Circuit High Input (Bank 2) [08/2015 - 08/2019] , or refer to DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1); DTC P0390: Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0392: Camshaft Position Sensor "B" Circuit Low Input (Bank 2); DTC P0393: Camshaft Position Sensor "B" Circuit High Input (Bank 2) [08/2019 - ] ).
    8. Check the crankshaft position sensor (Refer to INSPECTION [08/2015 - ] ).
    9. Install the 6 spark plugs (Refer to INSTALLATION [08/2015 - ] ).
    10. Connect the fuel pump ECU connector (Refer to PROCEDURE - Step 2 ).
  2. INSPECT SPARK PLUG 
    1. Check the electrode.
      GTY736129Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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 Body Ground

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

    2. 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.

    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 SK16HR11
    4. Clean the spark plugs.
      GTY533557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 the spark plug.

      Electrode gap for new spark plug

      1.0 to 1.1 mm (0.0394 to 0.0433 in.)

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