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ENGINE ON-VEHICLE INSPECTION

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PROCEDURE


  1. Click here

    INSPECT ENGINE COOLANT

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  2. Click here

    INSPECT ENGINE OIL

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  3. Click here

    INSPECT BATTERY

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  4. Click here

    CHECK SPARK PLUG

    Click here

  5. Click here

    INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY


    1. Remove the air cleaner cap with air cleaner hose.

      Click here

    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.

      Tip:

      • If necessary, replace the air cleaner filter element sub-assembly.

      • 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.

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

    5. Install the air cleaner cap with air cleaner hose.

      Click here

  6. Click here

    INSPECT V-RIBBED BELT TENSIONER ASSEMBLY


    1. Remove the V-ribbed belt.

      Click here

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

      Tip:

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

    3. Install the V-ribbed belt.

      Click here

  7. Click here

    INSPECT VALVE CLEARANCE

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  8. Click here

    INSPECT IGNITION TIMING


    1. Warm up and stop the engine.

      Tip:

      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:


      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.


        1. 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.


        1. 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 fan 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. Remove the V-bank cover sub-assembly.

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      2. B0066PG

        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.

      3. B0066OJC43
        *a DLC3

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

        09843-18040
        Note:

        • Confirm the terminal numbers before connecting them. Connecting the wrong terminals may damage to 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.

      4. 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.

      5. Start the engine and run it at idle.

      6. 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.

        Tip:

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

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

      8. Check the ignition timing at idle.

        Standard Ignition Timing
        8 to 18° BTDC at idle

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

      10. Disconnect the clip of the timing light from the ignition coil wire for the No. 1 cylinder.

      11. Install the V-bank cover sub-assembly.

        Click here

  9. Click here

    INSPECT ENGINE IDLE SPEED


    1. Warm up and stop the engine.

      Tip:

      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.


        1. Powertrain > Engine > Data List
          Tester Display
          Engine Speed




      5. Inspect the engine idle speed.

        Standard Idle Speed
        700 to 800 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.

        Tip:

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

        If the idle speed is not as specified, check the air intake system.

    3. When not using the Techstream:


      1. B0065FSC13
        *a DLC3

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

        09843-18030
        Note:

        Confirm the terminal numbers before connecting them. Connecting the wrong terminals may damage the electrical components.

      2. Start the engine and run it at idle.

      3. Inspect the engine idle speed.

        Standard Idle Speed
        700 to 800 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.

        Tip:

        If the idle speed is not as specified, check the air intake system.

      4. Turn the engine switch off.

      5. Disconnect the tachometer probe from terminal 9 (TAC) of the DLC3.

  10. Click here

    INSPECT COMPRESSION


    1. Warm up and stop the engine.

      Tip:

      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. Disconnect the cable from the negative (-) battery terminal.

    3. Remove the air cleaner cap with air cleaner hose.

      Click here

    4. Remove the battery.

    5. Remove the 8 spark plugs.

      Click here

    6. Disconnect the throttle with motor body connector.

    7. B0067NLC02
      *a Lock Lever
      *b Lock
      *c Connector (with Lock)

      Disconnect the 6 injector driver connectors from the 2 injector drivers.

    8. Disconnect the 2 injector driver connectors.

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

    10. Install the battery.

    11. Connect the cable to the negative (-) battery terminal.

    12. Fully open the throttle valve.

    13. Depress and hold the brake pedal, and turn the engine switch on (IG). Then check the compression pressure.

      Standard Compression Pressure
      1400 kPa (14.3 kgf/cm2, 203 psi)
      Minimum Compression Pressure
      1000 kPa (10.2 kgf/cm2, 145 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.


      1. 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.

        Tip:

        • 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, a valve may be stuck or seated improperly, or there may be leaks in the cylinder head gasket.

    14. Disconnect the cable to the negative (-) battery terminal.

    15. Remove the battery.

    16. Install the 8 spark plugs.

      Click here

    17. Install the battery.

    18. Install the air cleaner cap with air cleaner hose.

      Click here

    19. B00650GC02
      *a Lock Lever

      Connect the 2 injector driver connectors.

    20. Connect the 6 injector driver connectors to the 2 injector drivers.

    21. Connect the throttle with motor body connector.

    22. Connect the cable to the negative (-) battery terminal.

    23. Clear the DTCs.

      Click here

      Note:

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

  11. Click here

    INSPECT CO/HC

    Tip:

    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.

      Tip:

      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 the A/F sensor and heated oxygen sensor operation.

      2. Check for DTCs.

        Click here

      3. 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

        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

        3. 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:


          • Incorrect pressure

          • ECT sensor

          • ECM

          • Fuel injector assemblies

          • Throttle position sensor (built into throttle with motor body assembly)

          • MAF sensor