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 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.

    4. Install the air cleaner filter element sub-assembly.

    5. Install the air cleaner cap sub-assembly.

  5. INSPECT VALVE AND VALVE LASH ADJUSTER ASSEMBLY 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 30 minutes or more. Then perform the preceding inspections.

      Tech Tips

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


      1. Connect the GTS to the DLC3.

      2. Start the engine and run it at idle.

      3. Put the engine in inspection mode.

        Click here

      4. Turn the GTS on.

      5. 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 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.

      6. Check that the ignition timing advances immediately when the engine speed is increased.

      7. 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

      8. 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.

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

      10. Check that the ignition timing advances immediately when the engine speed is increased.

      11. Turn the power switch off.

      12. Turn the GTS off.

      13. Disconnect the GTS from the DLC3.

    4. When not using the GTS:


      1. A01KR0EC15
        *a DLC3

        Using SST, connect terminals 13 (TC) and 4 (CG) of the 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 shift position park (P) should be selected.

      2. Remove the No. 2 cylinder head cover assembly.

        Click here

      3. A01KT52

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

        Note

        Use a timing light that detects the primary signal.

      4. 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.

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

      6. Inspect the ignition timing at idle.

        Standard ignition timing
        0 to 16 degrees BTDC

      7. Check that the ignition timing advances immediately when the engine speed is increased.

      8. Remove the timing light.

      9. Install the No. 2 cylinder head cover assembly.

        Click here

  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. Turn the GTS on.

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


        Powertrain > Engine and ECT > Data List
        Tester Display
        Engine Speed

      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 fans off.

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

      6. Turn the power switch off.

      7. Turn the GTS off.

      8. Disconnect the GTS from the DLC3.

    4. When not using the GTS:


      1. A01KU4KC08
        *a 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

    Note

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


    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

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

    4. A01KSN5

      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.

      5. Enter the following menus: Powertrain / Hybrid Control / Active Test / Compression Test / ON.


        Powertrain > Hybrid Control > Active Test
        Tester Display
        Compression Test

      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 hybrid vehicle transaxle assembly. However, this is not a malfunction.

        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) or less

        Note


        • Inspect the other cylinders in the same way.

        • Measure the compression pressure as quickly as possible.

      7. 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.

        Tech Tips


        • If adding oil increases the compression pressure, 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 for DTCs.

        Click here

      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 for intake or exhaust valves

        4. Leaks for 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:


          • Pressure regulator

          • Engine coolant temperature sensor

          • Mass air flow meter

          • ECM

          • Injector assemblies

          • Throttle body

        4. Faulty EGR