ENGINE ON-VEHICLE INSPECTION


  1. INSPECT ENGINE COOLANT

    Click here

  2. INSPECT ENGINE OIL

    Click here

  3. INSPECT BATTERY

    Click here

  4. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY


    1. Remove the air cleaner cap sub-assembly Click here.

    2. Remove the air filter element sub-assembly.

    3. Visually check that the air filter is not excessively damaged or oily. If necessary, replace the air filter.

    4. Install the air filter element sub-assembly.

    5. Install the air cleaner cap sub-assembly Click here.

  5. CHECK V-RIBBED BELT


    1. A015YMEE02

      Check the belt for wear, cracks or other signs of damage.

      If any of the following defects is found, replace the V-ribbed belt.

      Tech Tips


      • The belt is cracked.

      • The belt is worn out to the extent that the cords are exposed.

      • The belt has chunks missing from the ribs.

    2. A015Z08E03

      Check that the belt fits properly in the ribbed grooves.

      Tech Tips

      Check by hand to confirm that the belt has not slipped out of the grooves on the bottom pulley. If it has slipped out, replace the V-ribbed belt. Install a new V-ribbed belt correctly.

  6. INSPECT V-RIBBED BELT TENSIONER ASSEMBLY


    1. Remove the V-ribbed belt Click here.

    2. A0160BW

      Check that nothing is caught in the tensioner by turning it clockwise and counterclockwise.

      If a malfunction exists, replace the tensioner.

    3. Install the V-ribbed belt Click here.

  7. INSPECT IGNITION TIMING


    1. Warm up and stop the engine.

      Tech Tips

      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 intelligent tester:


      1. Connect the intelligent tester to the DLC3.

      2. Start the engine and run it at idle.

      3. Turn the intelligent tester main switch on.

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

        Tech Tips

        Refer to the intelligent tester 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 / Active Test / Connect the TC and TE1.

      7. Monitor IGN Advance.

      8. Perform the Active test.

        Standard ignition timing
        8 to 12° BTDC at idle

        Note

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

        Tech Tips

        Refer to the intelligent tester operator's manual for further details.

    3. When not using the intelligent tester:


      1. Remove the V-bank cover sub-assembly Click here.

      2. Remove the cool air intake duct seal Click here.

      3. Remove the engine room side cover LH Click here (for LHD).

      4. Remove the engine room side cover LH Click here (for RHD).

      5. A0160IG

        Connect the timing light tester probe to the ignition connector wire for No. 1 cylinder.

        Note

        Use a timing light that detects primary signals.

      6. A015ZDXE05

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

        SST
        09843-18040

        Note


        • Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.

        • 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.

      7. A016382

        Using a timing light, check the ignition timing.

        Standard ignition timing
        8 to 12° BTDC at idle

      8. Remove SST from the DLC3.

      9. Check the ignition timing.

        Standard ignition timing
        8 to 18° BTDC at idle

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

      11. Disconnect the timing light from the engine.

      12. Install the engine room side cover LH Click here (for LHD).

      13. Install the engine room side cover LH Click here (for RHD).

      14. Install the cool air intake duct seal Click here.

      15. Install the V-bank cover sub-assembly Click here.

  8. INSPECT ENGINE IDLE SPEED


    1. Warm up and stop the engine.

      Tech Tips

      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 intelligent tester:


      1. Connect the intelligent tester to the DLC3.

      2. Start the engine and run it at idle.

      3. Turn the intelligent tester main switch on.

      4. Enter the following menus: Powertrain / Engine / Data List / Engine 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 idle speed, the transmission should be in neutral or park.

        Tech Tips

        Refer to the intelligent tester operator's manual for further details.

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

    3. When not using the intelligent tester:


      1. A015ZDXE32

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

        SST
        09843-18040

        Note

        Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.

      2. Check the idle speed.

        Standard idle speed
        700 to 800 rpm

        Note


        • Check the idle speed with the cooling fans off.

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

        • When checking the idle speed, the transmission should be in neutral or park.

        Tech Tips

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

  9. INSPECT COMPRESSION


    1. Warm up and stop the engine.

      Tech Tips

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

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    3. Remove the air cleaner cap sub-assembly Click here.

    4. Remove the battery.

    5. Remove the 8 spark plugs Click here.

    6. Disconnect the throttle body connector.

    7. A01607N

      Disconnect the 2 injector connectors as shown in the illustration.

    8. A0162G2E01

      Disconnect the 4 injector connectors as shown in the illustration.

    9. A01636O

      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) or more
      Minimum pressure
      1000 kPa (10.2 kgf/cm2, 145 psi)
      Pressure difference
      100 kPa (1.0 kgf/cm2, 14.5 psi) or less

      Note

      The measurement must be done as quickly as possible.

      Tech Tips

      Always use a fully charged battery to obtain engine speed of 250 rpm or more.

    14. If the cylinder compression is low in one or more cylinders, pour a small amount of engine oil into the cylinder with low compression through its spark plug hole. Then inspect the cylinder compression pressure again.

      Tech Tips


      • If adding oil helps boost the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.

      • If pressure stays low, a valve may be stuck or seated improperly, or there may be leakage in the gasket.

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

    16. Remove the battery.

    17. A015YGRE01

      Connect the 4 injector connectors as shown in the illustration.

    18. A01607N

      Connect the 2 injector connectors as shown in the illustration.

    19. Connect the throttle body connector.

    20. Install the 8 spark plugs Click here.

    21. Install the battery.

    22. Install the air cleaner cap sub-assembly Click here.

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

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    24. Clear the DTCs Click here.

  10. INSPECT CO/HC

    Tech Tips

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


    1. Start the engine.

    2. Keep the engine speed at 2500 rpm for approximately 180 seconds.

    3. A0161H3E01

      Insert the 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.

      Tech Tips


      • When performing the 2 mode (with the engine idling/running at 2500 rpm) test, follow the measurement order 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 the A/F sensor and heated oxygen sensor operation.

      2. See the table below for possible causes, then inspect and correct the applicable causes if necessary.

        CO HC Symptom Cause
        Normal High Rough idle

        • 1. Misfiring


          • Incorrect timing

          • Plugs are contaminated, shorted, or gaps are incorrect.

        • 2. Leaky intake and exhaust valves

        • 3. Leaky cylinder
        Low High

        Rough idle

        (Fluctuating HC reading)

        • 1. Vacuum leaks


          • PCV hose

          • Intake manifold

          • Throttle body

        • 2. Lean mixture causing misfire
        High High

        Rough idle

        (Black smoke from exhaust)

        • 1. Restricted air filter

        • 2. Faulty SFI system


          • Incorrect pressure

          • Defective ECT sensor

          • Faulty ECM

          • Faulty injector

          • Faulty throttle position sensor

          • Faulty MAF sensor