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On-Vehicle Inspection [06/2017 - ]: Procedure

  1. INSPECT COOLANT (for Engine) 

    (Refer to ON-VEHICLE INSPECTION [11/2015 - ] )

  2. INSPECT ENGINE OIL 

    (Refer to ON-VEHICLE INSPECTION [11/2015 - ] )

  3. INSPECT AUXILIARY BATTERY 

    (Refer to ON-VEHICLE INSPECTION [06/2017 - ] )

  4. INSPECT SPARK PLUG 

    (Refer to ON-VEHICLE INSPECTION [11/2015 - ] )

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

      If necessary, replace the air cleaner filter element.

    4. Install the air cleaner filter element.
    5. Install the air cleaner cap.
  6. INSPECT IGNITION TIMING 
    1. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
    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 (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
      3. Start the engine.
      4. Enter the following menus: Powertrain / Engine and ECT / Data List / IGN Advance.

        Standard ignition timing

        12 to 16 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fan off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transaxle should be in park.

        HINT: 

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

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

        Standard ignition timing

        8 to 12 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fan off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transaxle should be in park.

        HINT: 

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

      8. Enter the following menus: Connect the TC and TE1 / OFF.
      9. Turn the ignition switch off.
      10. Turn the Techstream off.
      11. Disconnect the Techstream from the DLC3.
    4. When not using the Techstream:
      1. Connect the clip of a timing light to the ignition coil wire for No. 1 cylinder.
        GTY334821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:

        Use a timing light that detects the primary signal.

      2. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
        GTY712598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a DLC3
        • SST: 09843-18040 
        NOTE:

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

      3. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
      4. Start the engine.
      5. Inspect the ignition timing at idle.

        Standard ignition timing

        8 to 12 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fan off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transaxle should be in park.
      6. Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
      7. Inspect the ignition timing at idle.

        Standard ignition timing

        12 to 16 degrees BTDC

        NOTE:
        • Check the ignition timing with the cooling fan off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transaxle should be in park.
      8. Confirm that the ignition timing advances when the engine rpm is increased.
      9. Remove the timing light.
  7. INSPECT ENGINE IDLE SPEED 
    1. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
    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 (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
      3. Start the engine.
      4. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.

        HINT: 

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

      5. Inspect the engine idle speed.

        Standard idle speed

        950 to 1050 rpm

        NOTE:
        • Turn all electrical systems and the A/C off.
        • Inspect the idle speed with the cooling fan off.
        • When checking the idle speed, the transaxle should be in park.
      6. Turn the ignition switch off.
      7. Turn the Techstream off.
      8. 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.
        GTY712596Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *a DLC3
        • SST: 09843-18030 
      2. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
      3. Inspect the engine idle speed.

        Standard idle speed

        950 to 1050 rpm

        NOTE:
        • Turn all electrical systems and the A/C off.
        • Inspect the idle speed with the cooling fan off.
        • When checking the idle speed, the transaxle should be in park.
      4. Disconnect terminal 9 (TAC) of the DLC3.
  8. INSPECT COMPRESSION 
    1. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
    2. Warm up and stop the engine.
    3. Remove the 4 spark plugs (Refer to REMOVAL [11/2015 - ] ).
      NOTE:

      If the No. 1 ignition coil connector is disconnected because a DTC is detected in inspection, always reconnect it.

    4. Insert a compression gauge into the spark plug hole.
      GTY334820Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Connect the Techstream to the DLC3.
    6. Turn the ignition switch to ON (IG).
    7. Turn the Techstream on.
      NOTE:

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

    8. Enter the following menus: Powertrain / Hybrid Control / Active Test / Compression Test / ON.
    9. Depress and hold the brake pedal, and turn the ignition switch to ON (READY).

      Standard compression pressure

      871 kPa (8.9 kgf/cm2 , 126 psi)

      Minimum pressure

      661 kPa (6.7 kgf/cm2 , 96 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.

      HINT: 

      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.

      • 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.
    10. Install the 4 spark plugs (Refer to INSTALLATION [11/2015 - ] ).
    11. Clear the DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).

      HINT: 

      Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

  9. INSPECT CO/HC 

    HINT: 

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

    1. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [11/2015 - ] ).
    2. Start 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 while idling 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 [11/2015 - ] ).
      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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