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On-Vehicle Inspection

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

In this section, the terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10°C (14°F) to 50°C (122°F). "HOT" means approximately 50°C (122°F) to 100°C (212°F).

  1. INSPECT IGNITION COIL ASSEMBLY 
    1. Check for DTCs. Refer to DTC CHECK / CLEAR .
      NOTE:

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

    2. Check that spark occurs.
      1. Remove the V-bank cover. Refer to REMOVAL - Step 16 .
      2. Remove the intake air surge tank. Refer to REMOVAL - Step 11 .
      3. Remove the ignition coils.
      4. Using a 16 mm (0.63 in.) plug wrench, remove the spark plugs.
      5. Install the spark plugs to each ignition coil, and connect the ignition coil connectors.
      6. Disconnect the 6 injector connectors.
      7. Ground the spark plugs.
      8. 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.
        • If an ignition coil has been struck or dropped, replace it.
        • Do not crank the engine for more than 2 seconds.

        HINT: 

        If spark does not occur, perform the following procedure (Refer to step "c").

    3. Perform the following spark test procedure (Step "c").
      1. Check that the wire harness side connector of the ignition coil is securely connected.

        Result

        Result Action
        NG Connect securely
        OK Refer to next step
      2. Perform a speak test on each ignition coil.
        1. Replace the ignition coil with igniter with a known good one.
        2. Perform the spark test again.

          Result

          Result Action
          NG Refer 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 Action
          NG Refer to next step
          OK Replace spark plug
      4. Check the power supply to the ignition coil.
        1. Turn the engine switch on (IG).
        2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Condition Specified Condition
        1 (+B) - 4 (GND) Specified Condition 1 (+B) - 4 (GND) Engine switch on (IG) 11 to 14V
        Fig 1: Checking +B & GND Connection
        GTY300637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Result

        Result Action
        NG Check wiring between battery and ignition coil and check ground circuit
        OK Replace the ECM. Refer to COMPONENTS
        TEXT IN ILLUSTRATION

        *1 Front view of wire harness connector
        (to Ignition coil)
    4. Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.

      Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf) 

    5. Install the ignition coils.

      Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) 

    6. Install the intake air surge tank. Refer to INSTALLATION - Step 3 .
    7. Install the V-bank cover. Refer to INSTALLATION - Step 100 .
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