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On-Vehicle Inspection [09/2014 - 11/2017]: Procedure

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  1. INSPECT ENGINE COOLANT 

    Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]

  2. INSPECT ENGINE OIL 

    Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]

  3. CHECK BATTERY CONDITION 

    Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]

  4. CHECK SPARK PLUG 

    Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]

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

      HINT: 

      • If there is any dirt or clogs in the air cleaner filter element sub-assembly, clean it with compressed air.
      • If any dirt or clogs remain even after cleaning the air cleaner filter element sub-assembly with compressed air, replace it.
    3. Install the air cleaner filter element sub-assembly.
  6. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY 
    1. Remove the V-ribbed belt.

      See step  1

    2. Check that the V-ribbed belt tensioner assembly moves smoothly by turning it clockwise and counterclockwise.

      HINT: 

      If there is any malfunction, replace the V-ribbed belt tensioner assembly.

    3. Install the V-ribbed belt.

      See step  1

  7. INSPECT VALVE LASH ADJUSTER ASSEMBLY NOISE 
    1. Rev up the engine several times. Check that the engine does not emit unusual noises.
    2. If unusual noises occur, warm up the engine and idle it for 30 minutes or more, then perform the inspection.

      HINT: 

      If any defects or problems are found during the inspection, perform valve lash adjuster assembly inspection.

      Refer to PROCEDURE - Step 2

  8. INSPECT IGNITION TIMING 
    1. Warm up and stop the engine.

      HINT: 

      A warmed up engine should have an engine coolant temperature of over 80°C (176°F), an engine oil temperature of 60°C (140°F), and the engine speed should be stabilized.

    2. When using the Techstream:

      Check the ignition timing.

      1. Connect the Techstream to the DLC3.
      2. Start the engine and run it at idle.
      3. Turn the Techstream on.
      4. Enter the following menus: Powertrain / Engine / Data List / IGN Advance.

        Powertrain > Engine > Data List 

        Tester Display
        IGN Advance

        Standard Ignition Timing

        8 to 18° BTDC at idle

        NOTE:
        • Check the ignition timing with the cooling fans off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transmission should be in neutral or park.
      5. Check that the ignition timing advances immediately when the engine speed is increased.
      6. Enter the following menus: Powertrain / Engine / Active Test / Connect the TC and TE1 / ON.

        Powertrain > Engine > Active Test 

        Active Test Display
        Connect the TC and TE1
        Data List Display
        IGN Advance
      7. Monitor IGN Advance.
      8. Perform the Active Test.

        Standard Ignition Timing

        8 to 12° BTDC at idle

        NOTE:
        • Check the ignition timing with the cooling fans off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transmission should be in neutral or park.
    3. When not using the Techstream:
      1. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
        GTY462362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a DLC3
        • SST: 09843-18040 
        NOTE:
        • Confirm the terminal numbers before connecting them. Connecting the wrong terminals may damage electrical components.
        • Check the ignition timing with the cooling fans off.
        • Turn off all the electrical systems and the A/C.
        • When checking the ignition timing, the transmission should be in neutral or park.
      2. Remove the V-bank cover sub-assembly.

        See step  4 [09/2014 - 10/2015], or see step  4 [10/2015 - 11/2017]

      3. Connect the clip of a timing light to the ignition coil wire for the No. 1 cylinder.
        NOTE:

        Use a timing light that detects primary signals.

      4. Start the engine and run it at idle.
      5. Check the ignition timing at idle.

        Standard Ignition Timing

        8 to 12° BTDC at idle

        NOTE:

        When checking the ignition timing, the transmission should be in neutral or park.

        HINT: 

        Run the engine at 1000 to 1300 rpm for 5 seconds, and then check that the engine rpm returns to engine idle speed.

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

        Standard Ignition Timing

        8 to 18° BTDC at idle

      8. Confirm that the ignition timing advances immediately when the engine idle speed is increased.
      9. Disconnect the clip of the timing light from the ignition coil wire for the No. 1 cylinder.
      10. Install the V-bank cover sub-assembly.

        See step  117 [09/2014 - 10/2015], or refer to PROCEDURE - Step 118 [10/2015 - 11/2017]

  9. INSPECT ENGINE IDLE SPEED 
    1. Warm up and stop the engine.

      HINT: 

      A warmed up engine should have an engine coolant temperature of over 80°C (176°F), an engine oil temperature of 60°C (140°F), and the engine idle speed should be stabilized.

    2. When using the Techstream:
      1. Connect the Techstream to the DLC3.
      2. Start the engine and run it at idle.
      3. Turn the Techstream on.
      4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed.

        Powertrain > Engine > Data List 

        Tester Display
        Engine Speed
      5. Read the value displayed on the tester.

        Standard Idle Speed

        600 to 700 rpm

        NOTE:
        • Check the idle speed with the cooling fans off.
        • Turn off all the electrical systems and the A/C.
        • When checking the engine idle speed, the transmission should be in neutral or park.
    3. When not using the Techstream:
      1. Using SST, connect a tachometer probe to terminal 9 (TAC) of the DLC3.
        GTY462598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a DLC3
        NOTE:

        Be sure to connect the tachometer probe to the correct terminal. Connecting to the wrong terminal can cause damage to electrical components.

        • SST: 09843-18030 
      2. Start the engine and run it at idle.
      3. Inspect the engine idle speed.

        Standard Idle Speed

        600 to 700 rpm

        NOTE:
        • Check the engine idle speed with the cooling fans off.
        • Turn off all the electrical systems and the A/C.
        • When checking the engine idle speed, the transmission should be in neutral or park.
      4. Turn the engine switch off.
      5. Disconnect the tachometer probe from terminal 9 (TAC) of the DLC3.
  10. INSPECT COMPRESSION 
    NOTE:

    Keep the intake manifold and spark plug holes free from foreign matter when measuring the compression pressure.

    1. Warm up and stop the engine.

      HINT: 

      A warmed up engine should have an engine coolant temperature of over 80°C (176°F), an engine oil temperature of 60°C (140°F), and the engine idle speed should be stabilized.

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

    3. Remove the 6 spark plugs.

      Refer to REMOVAL [09/2014 - 11/2017]

    4. Disconnect the 4 fuel injector connectors.
      NOTE:

      Disable fuel injection in order to prevent catalyst damage due to unburned gasoline.

      GTY503604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Disconnect the throttle with motor body connector.
    6. Disconnect the 2 injector driver connectors as shown in the illustration.
      GTY505494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Release
      *b Move
    7. Check the cylinder compression pressure.
      1. Insert a compression gauge into the spark plug hole.
      2. Fully open the throttle.
      3. While cranking the engine, measure the compression pressure.

        Standard Compression Pressure

        1400 kPa (14.3 kgf/cm2 , 203 psi)

        Minimum Compression Pressure

        980 kPa (10.0 kgf/cm2 , 142 psi)

        Pressure Difference between Each Cylinder

        100 kPa (1.0 kgf/cm2 , 15 psi) or less

        NOTE:
        • Always use a fully charged battery to obtain an engine speed of 250 rpm or more.
        • Inspect all cylinders in the same way.
        • Measure the compression pressure as quickly as possible.
      4. If the cylinder compression pressure is low, pour a small amount of engine oil into the cylinder through the spark plug hole and inspect it again.

        HINT: 

        • If adding engine oil increases the compression pressure, the piston rings and/or cylinder bore may be worn or damaged.
        • If the compression pressure stays low, a valve may be stuck or seated improperly, or there may be leaks in the cylinder head gasket.
    8. Connect the 2 injector driver connectors as shown in the illustration.
      GTY502720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Move
    9. Connect the throttle with motor body connector.
    10. Connect the 4 fuel injector connectors.
    11. Install the 6 spark plugs.

      Refer to INSTALLATION [09/2014 - 11/2017]

    12. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

      NOTE:

      After the inspection, clear the DTCs, check for DTCs again and make sure the normal system code is output.

  11. INSPECT CO/HC 

    HINT: 

    This check determines whether the idle CO/HC complies with regulations.

    1. Start the engine.
    2. Keep the engine speed at 2500 rpm for approximately 180 seconds.
    3. Insert a CO/HC meter testing probe at least 40 cm (1.31 ft.) into the tailpipe during idle.
    4. Check the CO/HC concentration during idle and when the engine is running at 2500 rpm.

      HINT: 

      When performing the 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, perform troubleshooting in the following order.

      1. Check for DTCs.

        Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

      2. See the following table for possible causes, then inspect the applicable parts and repair them if necessary.
        CO HC Problem Cause
        Normal High Rough idle
        1. Faulty ignition:
          • Incorrect valve timing
          • Fouled, shorted or improperly gapped spark plugs
        2. Incorrect valve clearance (valve lash adjuster assembly)
        3. Leaks in intake or exhaust valves
        4. Leaks in cylinders
        Low High Rough idle
        (Fluctuating HC reading)
        1. Vacuum leaks:
          • PCV hoses
          • Intake manifold
          • Throttle with motor body assembly
        2. Lean mixture causing misfire
        High High Rough idle
        (Black smoke from exhaust)
        1. Restricted air cleaner filter element sub-assembly
        2. Plugged PCV valve
        3. Faulty SFI system:
          • Fuel pressure regulator assembly
          • Engine coolant temperature sensor
          • Mass air flow meter sub-assembly
          • ECM
          • Fuel injector assemblies
          • Throttle position sensor (built into throttle with motor body assembly)
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