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Home >> Toyota >> 2016 >> Corolla S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical (2ZR-FAE) - Service Information (1 Of 2) (Model Code: ZRE172)) >> Engine >> On-Vehicle Inspection [08/2013 - ] >> Procedure

On-Vehicle Inspection [08/2013 - ]: Procedure

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  1. INSPECT ENGINE COOLANT 

    Refer to ON-VEHICLE INSPECTION [08/2013 - ]

  2. INSPECT ENGINE OIL 

    Refer to ON-VEHICLE INSPECTION [08/2013 - ]

  3. INSPECT BATTERY 

    Refer to ON-VEHICLE INSPECTION [08/2013 - ]

  4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY 
    1. Remove the air cleaner cap with air cleaner hose.

      Refer to PROCEDURE - Step 3

    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.

      HINT: 

      • If there is any foreign matter or clogs in the air cleaner filter element sub-assembly, clean it with compressed air.
      • If any foreign matter or clogs remain even after cleaning the air cleaner filter element sub-assembly with compressed air, replace it.
    4. Install the air cleaner filter element sub-assembly.
    5. Install the air cleaner cap with air cleaner hose.

      Refer to PROCEDURE - Step 3

  5. INSPECT SPARK PLUG 

    Refer to PROCEDURE - Step 3

  6. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY 
    1. Remove the V-ribbed belt.

      Refer to REMOVAL [08/2013 - ] 

    2. Check that nothing is caught in the V-ribbed belt tensioner assembly by turning it clockwise and counterclockwise.

      HINT: 

      It a malfunction exists, replace the V-ribbed belt tensioner assembly.

    3. Install the V-ribbed belt.

      Refer to INSTALLATION [08/2013 - ] 

  7. INSPECT VALVE LASH ADJUSTER NOISE 
    1. 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 30 minutes or more. Then perform the preceding inspections.

      HINT: 

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

      Refer to PROCEDURE - Step 2

  8. INSPECT IGNITION TIMING 
    1. Warm up and stop the engine.
    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 and ECT / Data List / IGN Advance.

        Powertrain > Engine and ECT > Data List 

        Tester Display
        IGN Advance

        Standard Ignition Timing

        0 to 14 degrees BTDC

        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 transaxle should be in neutral or park.
      5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1 / on.

        Powertrain > Engine and ECT > Active Test 

        Tester Display
        Connect the TC and TE1
      6. Monitor IGN Advance of the Data List.

        Standard Ignition Timing

        8 to 12 degrees BTDC

        NOTE:

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

      7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1 / OFF.
      8. Check that the ignition timing advances immediately when the engine speed is increased.
      9. Turn the ignition switch off.
      10. Disconnect the Techstream from the DLC3.
    3. When not using the Techstream:
      1. Using SST, connect terminal 13 (TC) and 4 (CG) of the DLC3.
        GTY429612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a DLC3
        • SST: 09843-18040 
        NOTE:
        • Be sure to connect the terminals correctly. Failure to do this can damage the engine.
        • Check the ignition timing with the cooling fans off.
        • Turn off all electrical systems and the A/C.
        • When checking the ignition timing, the transaxle should be in neutral or park.
      2. Remove the No. 2 cylinder head cover.

        See step  11 See step  11

      3. Connect the clip of the timing light to the wire harness shown in the illustration.
        NOTE:

        Use a timing light that detects the primary signal.

        GTY186860Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Inspect the ignition timing at idle.

        Standard Ignition Timing

        8 to 12 degrees BTDC

        NOTE:

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

        HINT: 

        After running the engine at 1000 to 1300 rpm for 5 seconds, check that it returns to idle speed.

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

        Standard Ignition Timing

        0 to 14 degrees BTDC

      7. Check that the ignition timing advances immediately when the engine speed is increased.
      8. Disconnect the clip of the timing light.
      9. Install the No. 2 cylinder head cover.

        See step  64 See step  64

  9. INSPECT ENGINE IDLE SPEED 
    1. Warm up and stop the engine.
    2. When using the Techstream:
      1. Connect the Techstream to the DLC3.
      2. Start the engine and run it at idle.
      3. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.

        Powertrain > Engine and ECT > Data List 

        Tester Display
        Engine Speed
      4. Inspect the engine idle speed.

        Standard Idle Speed

        700 to 800 rpm

        NOTE:
        • Turn off all electrical systems and the A/C.
        • Inspect the idle speed with the cooling fans off.
        • When checking the idle speed, the transaxle should be in neutral or park.
      5. Turn the ignition switch off.
      6. Disconnect the Techstream from the DLC3.
    3. When not using the Techstream:
      1. Using SST, connect a tachometer probe to terminal 9 (TAC) of the DLC3.
        NOTE:

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

        • SST: 09843-18040 
        GTY430472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a DLC3
      2. Start the engine and run it at idle.
      3. Inspect the engine idle speed.

        Standard idle speed

        700 to 800 rpm

        NOTE:
        • Turn off all electrical systems and the A/C.
        • Inspect the idle speed with the cooling fans off.
        • When checking the idle speed, the transaxle should be in neutral or park.
      4. Turn the ignition 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 of foreign matter when measuring the compression pressure.

    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [08/2013 - ]

    2. Warm up and stop the engine.
    3. Remove the 4 spark plugs.

      Refer to PROCEDURE - Step 3

    4. Disconnect the 4 fuel injector connectors.
      NOTE:

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

    5. Inspect the cylinder compression pressure.
      GTY181123Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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

        1373 kPa (14.0 kgf/cm2 , 199 psi)

        Minimum Compression Pressure

        1079 kPa (11.0 kgf/cm2 , 157 psi)

        Pressure Difference between each Cylinder

        98 kPa (1.0 kgf/cm2 , 14.2 psi) or less

        NOTE:
        • Use a fully-charged battery so that the engine speed can be increased to 250 rpm or more.
        • Inspect the other 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, then inspect it again.

        HINT: 

        • If adding oil increases the compression pressure, the piston rings and/or cylinder bore may be worn or damaged.
        • If the compression pressure stays low, the valve may be stuck or seated improperly, or there may be leaks in the gasket.
    6. Connect the 4 fuel injector connectors.
    7. Install the 4 spark plugs.

      Refer to PROCEDURE - Step 1

    8. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [08/2013 - ]

      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 or not the idle CO/HC complies with regulations.

    1. Start the engine.
    2. Keep the engine at 2500 rpm for approximately 180 seconds.
    3. Insert a CO/HC meter testing probe at least 40 cm (1.3 ft.) into the tailpipe during idle.
    4. Immediately check CO/HC concentration during idle and when 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, perform troubleshooting in the order given below.

      1. Check for DTCs.

        Refer to DTC CHECK / CLEAR [08/2013 - ]

      2. See the following table 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 in intake or exhaust valves
        4. Leaks in cylinders
        Low High Rough idle (Fluctuating HC reading)
        1. Vacuum leaks:
          • PCV hoses
          • Intake manifold
          • Throttle body assembly
          • Brake booster line
        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 EFI systems:
          • Pressure regulator
          • Engine coolant temperature sensor
          • Mass air flow meter
          • ECM
          • Injector assemblies
          • Throttle body assembly
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