ENGINE ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT COOLANT (for Engine)

    Click here

  2. INSPECT ENGINE OIL

    Click here

  3. INSPECT AUXILIARY BATTERY

    Click here

  4. 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.

  5. INSPECT VALVE AND ADJUSTER NOISE


    1. Put the engine in inspection mode Click here.

    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 lash adjuster inspection Click here.

  6. INSPECT IGNITION TIMING


    1. Put the engine in inspection mode Click here.

    2. Warm up and stop the engine.

    3. When using the GTS:

      Check the ignition timing.


      1. Connect the GTS to the DLC3.

      2. Put the engine in inspection mode Click here.

      3. Enter the following menus: Powertrain / Engine and ECT / Data List / IGN Advance.

        Standard ignition timing
        0 to 16 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 shift position park (P) should be selected.

        Tech Tips

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

      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

        When checking the ignition timing, the shift position park (P) should be selected.

        Tech Tips

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

      7. Enter the following menus: Connect the TC and TE1 / OFF.

      8. Turn the power switch off.

      9. Turn the GTS off.

      10. Disconnect the GTS from the DLC3.

    4. When not using the GTS:


      1. A005BU4E70
        Text in Illustration
        *1 DLC3

        Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.

        SST
        09843-18040

        Note


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

        • Check the ignition timing with the cooling fans off.

        • Turn off all electrical systems and the A/C.

        • When checking the ignition timing, the shift position park (P) should be selected.

      2. Remove the No. 2 cylinder head cover.

      3. Pull out the wire harness.

        Note

        After checking, wrap the wire harness with tape.

      4. A005C86

        Connect the clip of the timing light to the wire harness.

        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

        When checking the ignition timing, the shift position park (P) should be selected.

        Tech Tips

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

      6. Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.

      7. Inspect the ignition timing at idle.

        Standard ignition timing
        0 to 16 degrees BTDC

      8. Confirm that the ignition timing advances when the engine rpm is increased.

      9. Remove the timing light.

      10. Install the No. 2 cylinder head cover.

  7. INSPECT ENGINE IDLE SPEED


    1. Put the engine in inspection mode Click here.

    2. Warm up and stop the engine.

    3. When using the GTS:


      1. Connect the GTS to the DLC3.

      2. Put the engine in inspection mode Click here.

      3. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.

        Tech Tips

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

      4. 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 fans off.

        • When checking the idle speed, the shift position park (P) should be selected.

      5. Turn the power switch off.

      6. Turn the GTS off.

      7. Disconnect the GTS from the DLC3.

    4. When not using the GTS:


      1. A005CPWE12
        Text in Illustration
        *1 DLC3

        Using SST, connect a tachometer tester probe to terminal 9 (TAC) of the DLC3.

        SST
        09843-18030

      2. Put the engine in inspection mode Click here.

      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 fans off.

        • When checking the idle speed, the shift position park (P) should be selected.

      4. Disconnect terminal 9 (TAC) of the DLC3.

  8. INSPECT COMPRESSION


    1. Put the engine in inspection mode Click here.

    2. Warm up and stop the engine.

    3. Remove the 4 spark plugs Click here.

      Note

      If the ignition coil assembly connector is disconnected because a DTC is detected in inspection, always reconnect it.

    4. A0059X3

      Inspect the cylinder compression pressure.


      1. Insert a compression gauge into the spark plug hole.

      2. Connect the GTS to the DLC3.

      3. Turn the power switch on (IG).

      4. Turn the GTS 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.

        Tech Tips


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

        • Always use a fully charged auxiliary battery to obtain an engine speed of 200 rpm or more.

        Standard compression pressure
        813 kPa (8.3 kgf/cm2, 118 psi)
        Minimum pressure
        617 kPa (6.3 kgf/cm2, 89.5 psi)
        Pressure difference between each cylinder
        100 kPa (1.0 kgf/cm2, 14.5 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.

        Tech Tips


        • 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 Click here.

      Note

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

  9. INSPECT CO/HC

    Tech Tips

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


    1. Put the engine in inspection mode Click here.

    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 while idling and when the engine is running at 2500 rpm.

      Tech Tips

      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 Click here.

      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