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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (Service Information) (Hybrid) >> Engine >> On-Vehicle Inspection [10/2014 - ] >> Procedure

On-Vehicle Inspection [10/2014 - ]: Procedure

  1. INSPECT COOLANT (for Engine) 

    (Refer to ON-VEHICLE INSPECTION [10/2014 - ] )

  2. INSPECT ENGINE OIL 

    (Refer to ON-VEHICLE INSPECTION [10/2014 - ] )

  3. INSPECT AUXILIARY BATTERY 

    (Refer to ON-VEHICLE INSPECTION [10/2014 - ] )

  4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY 
    1. Remove the air cleaner cap sub-assembly.
    2. Remove the air cleaner filter element sub-assembly.
    3. Visually check that the air cleaner filter element sub-assembly is not excessively damaged or oily.

      If necessary, replace the air cleaner filter element sub-assembly.

    4. Install the air cleaner filter element sub-assembly.
    5. Install the air cleaner cap sub-assembly.
  5. INSPECT SPARK PLUG 

    (Refer to ON-VEHICLE INSPECTION [10/2014 - ] )

  6. INSPECT VALVE LASH ADJUSTER ASSEMBLY NOISE 
    1. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    2. Rev up the engine several times. Check that the engine does not emit unusual noises. If unusual noises occur, warm up the engine and idle it for over 30 minutes. Then, perform the inspection above again. If any defects or problems are found during the inspection above, perform a valve lash adjuster assembly inspection (See step  2).
  7. INSPECT IGNITION TIMING 
    1. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    2. Warm up and stop the engine.
    3. When using the Techstream:

      Check the ignition timing.

      1. Connect the Techstream to the DLC3.
      2. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
      3. Enter the following menus: Powertrain / Engine and ECT / Data List / IGN Advance.

        Standard Ignition Timing

        5 to 20 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fans off.
        • Turn all electrical systems and the A/C off.
        • When checking the ignition timing, the shift lever should be in P.

        HINT: 

        Refer to the Techstream operator's manual for further details.

        If the ignition timing is not as specified, check the valve timing.

      4. Check that the ignition timing advances immediately when the engine speed is increased.
      5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1 / ON.
      6. Monitor IGN Advance of the Data List.

        Standard Ignition Timing

        8 to 12 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fans off.
        • Turn all electrical systems and the A/C off.
        • When checking the ignition timing, the shift lever should be in P.

        HINT: 

        Refer to the Techstream operator's manual for further details.

        If the ignition timing is not as specified, check the valve timing.

      7. Enter the following menus: Connect the TC and TE1 / OFF.
      8. Turn the power switch off.
      9. Turn the Techstream off.
      10. Disconnect the Techstream from the DLC3.
    4. When not using the Techstream:
      1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
        GTY605151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 DLC3
        • SST: 09843-18040 
        NOTE:

        Confirm the terminals before connecting them. Connecting the wrong terminals may result in damage to electrical components.

      2. Remove the No. 1 engine cover sub-assembly.
      3. Pull out the wire harness.
        NOTE:

        After checking, wrap the wire harness with tape.

      4. Connect the clip of the timing light to the wire harness.
        GTY315510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:

        Use a timing light that detects the primary signal.

      5. Inspect the ignition timing at idle.

        Standard Ignition Timing

        8 to 12 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fans off.
        • Turn all electrical systems and the A/C off.
        • When checking the ignition timing, the shift lever should be in P.

        If the ignition timing is not as specified, check the valve timing.

      6. Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
      7. Inspect the ignition timing at idle.

        Standard Ignition Timing

        5 to 20 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fans off.
        • Turn all electrical systems and the A/C off.
        • When checking the ignition timing, the shift lever should be in P.

        If the ignition timing is not as specified, check the valve timing.

      8. Confirm that the ignition timing advances when the engine rpm is increased.
      9. Remove the timing light.
      10. Install the No. 1 engine cover sub-assembly.
  8. INSPECT ENGINE IDLE SPEED 
    1. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    2. Warm up and stop the engine.
    3. When using the Techstream:
      1. Connect the Techstream to the DLC3.
      2. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
      3. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.

        HINT: 

        Refer to the Techstream operator's manual for further details.

      4. Inspect the engine idle speed.

        Standard Idle Speed

        900 to 1050 rpm

        NOTE:
        • Turn all electrical systems and the A/C off.
        • Inspect the engine idle speed with the cooling fans off.
        • When checking the engine idle speed, the shift lever should be in P.
      5. Turn the power switch off.
      6. Turn the Techstream off.
      7. Disconnect the Techstream from the DLC3.
    4. When not using the Techstream:
      1. Using SST, connect a tachometer tester probe to terminal 9 (TAC) of the DLC3.
        GTY542757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 DLC3
        • SST: 09843-18030 
      2. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
      3. Inspect the engine idle speed.

        Standard Idle Speed

        900 to 1050 rpm

        NOTE:
        • Turn all electrical systems and the A/C off.
        • Inspect the idle speed with the cooling fans off.
        • When checking the engine idle speed, the shift lever should be in P.
      4. Disconnect the tachometer probe from the DLC3.
  9. INSPECT COMPRESSION 
    1. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    2. Warm up and stop the engine.
    3. Remove the 4 spark plugs (Refer to REMOVAL [10/2014 - ] ).
      NOTE:

      DTCs will be stored if the inspection is performed with the ignition coil assembly connectors disconnected. Make sure that the ignition coil assembly connectors are connected during the inspection.

    4. Inspect the cylinder compression pressure.
      GTY315508Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Insert a compression gauge into the spark plug hole.
      2. Connect the Techstream to the DLC3.
      3. Turn the power switch on (IG).
      4. Turn the Techstream on.
        NOTE:

        Check the HV battery voltage in the data list to ensure that the battery is fully charged.

      5. Enter the following menus: Powertrain / Hybrid Control / Active Test / Compression Test / ON.
      6. Depress and hold the brake pedal, and turn the power switch on (READY).
        NOTE:

        The measurement must be done as quickly as possible.

        HINT: 

        Noise may be emitted from the transmission. However, this is not a malfunction.

        Standard Compression Pressure

        1100 kPa (11.2 kgf/cm2 , 160 psi)

        Minimum Pressure

        750 kPa (7.6kgf/cm2 , 109 psi)

        Pressure Difference Between Each Cylinder

        100 kPa (1.0 kgf/cm2 , 15 psi)

        NOTE:
        • Inspect the other cylinders in the same way.
        • Measure the compression as quickly as possible.
      7. If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the spark plug hole, then inspect it again.

        HINT: 

        • If adding oil increases the compression, the piston rings and/or cylinder bore may be worn or damaged.
        • If the pressure stays low, a valve may be stuck or seated improperly, or there may be leaks from the gasket.
    5. Install the 4 spark plugs (Refer to INSTALLATION [10/2014 - ] ).
      NOTE:

      After performing all the steps, be sure to clear any DTCs stored in memory.

  10. INSPECT CO/HC 

    HINT: 

    This check determines whether or not the idle CO/HC complies with regulations.

    1. Put the engine in inspection mode (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    2. Warm up the engine.
    3. Run the engine at 2500 rpm for approximately 180 seconds.
    4. Insert a CO/HC meter testing probe at least 40 cm (1.31 ft.) into the tailpipe while idling.
    5. Check the CO/HC concentration at idle and when the engine is running at 2500 rpm.

      HINT: 

      • When doing a 2 mode (with the engine idling/ running at 2500 rpm) test, the measurement procedures are determined by applicable local regulations.
      • If the CO/HC concentration does not comply with the regulations, troubleshoot in the order given below.
      1. Check the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
      2. See the table below for possible causes, then inspect the applicable parts and repair them if necessary.
        CO HC Problem Possible Cause
        Normal High Rough idle
        1. Faulty ignition:
          • Incorrect timing
          • Fouled, shorted or improperly gapped plugs
        2. Incorrect valve clearance
        3. Leaks from intake and exhaust valves
        4. Leaks from cylinders
        5. Faulty EGR
        Low High Rough idle (Fluctuating HC reading)
        1. Vacuum leaks:
          • PCV hoses
          • Intake manifold
          • Throttle body
        2. Lean mixture causing misfire
        3. Faulty EGR
        High High Rough idle (Black smoke from exhaust)
        1. Restricted air cleaner filter element
        2. Plugged PCV valve
        3. Faulty EFI systems:
          • Faulty pressure regulator
          • Faulty engine coolant temperature sensor
          • Faulty mass air flow meter
          • Faulty ECM
          • Faulty injectors
          • Throttle body
        4. Faulty EGR
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