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Section 722 (Engine Ignition System (2AZ-FE)): Inspection

WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: In the following 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 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. Check the electrode.
      1. Using an mega ohmmeter, measure the insulation resistance.

        Correct insulation resistance:  10 MΩ. or more

      If the resistance is less than the specified value, proceed to step ( d).

      HINT:

      If the mega ohmmeter is not available, do the following simple inspection instead.

      Fig 1: Measuring Insulation Resistance To Ground
      G02853933Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Alternative inspection method:
      1. Quickly accelerate the engine to 4,000 rpm 5 times.
      2. Remove the spark plug.
      3. Visually check the spark plug.
        Fig 2: Checking Spark Plug
        G02853934Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. If the electrode is dry, the spark plug is functioning. Proceed to step  2.
      5. If the electrode is damp, proceed to step  c,  d and  e.
      6. Install the spark plug.
    3. Check the spark plug for any damage on its thread and insulator.

      If there is any damage, replace the spark plug.

      RECOMMENDED SPARK PLUG

      DENSO made SK20R11
      NGK made IFR6A11
    4. Check the spark plug electrode gap.

      Maximum electrode gap for used spark plug:  1.3 mm (0.051 in.)

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

      Correct electrode gap for new spark plug:  1.0 to 1.1 mm (0.039 to 0.043 in.)

      NOTE: 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 on a used plug.
      Fig 3: Checking Spark Plug Electrode Gap
      G02853935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.

      • Air pressure:  588 kPa (6 kgf/cm2 , 85 psi)
      • Duration:  20 seconds or less

      HINT:

      Only use the spark plug cleaner when the electrode is free of oil. If the electrode has trace of oil, use gasoline to clean off the oil before using the spark plug cleaner.

    Fig 4: Cleaning Spark Plugs
    G02853936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT CAMSHAFT POSITION SENSOR 
    1. Measure the resistance between the terminals.

      Standard: 

      RESISTANCE CHECK

      Temperature Specified Condition
      Cold 835 to 1,400 Ω.
      Hot 1,060 to 1,645 Ω.

      If the result is not as specified, replace the sensor.

  3. INSPECT CRANKSHAFT POSITION SENSOR 
    1. Measure the resistance between the terminals.

      Standard: 

      RESISTANCE CHECK

      Temperature Specified Condition
      Cold 985 to 1,600 Ω
      Hot 1,265 to 1,890 Ω

      If the result is not as specified, replace the sensor.

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