ENGINE ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT ENGINE IDLE SPEED

    Note


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

    • Inspect the engine idle speed with the cooling fan off.

    • When checking the idle speed, the transaxle should be in neutral.


    1. Warm up and stop the engine.

    2. When using the intelligent tester:


      1. Connect the intelligent tester to the DLC3.

      2. Turn the ignition switch to ON and tester on.

      3. Enter the following menus:

        Powertrain / Engine and ECT / Data List / Engine Speed.

      4. Inspect the engine idling speed.

        Idling speed
        720 to 820 rpm

      5. Fully depress the accelerator pedal.

      6. Check the maximum speed.

        Maximum speed
        5150 to 5250 rpm

      7. Turn the ignition switch off.

      8. Disconnect the intelligent tester from the DLC3.

    3. A01VL3CE01
      Text in Illustration
      *a Front view of DLC3

      When not using the intelligent tester:


      1. Install SST to terminal 9 (TAC) of DLC3, and then connect a tachometer.

        SST
        09843-18040

        Note

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

      2. Turn the ignition switch to ON.

      3. Inspect the engine idling speed.

        Idling speed
        720 to 820 rpm

      4. Fully depress the accelerator pedal.

      5. Check the maximum speed.

        Maximum speed
        5150 to 5250 rpm

      6. Turn the ignition switch off.

      7. Disconnect the tachometer.

      8. Remove SST from terminal 9.

  2. INSPECT COMPRESSION (w/ DPF)


    1. Warm up and stop the engine.

    2. Disconnect the negative battery terminal.

    3. Remove the 4 glow plugs Click here.

    4. Disconnect the 4 connectors from the 4 injector assemblies.

    5. Connect the negative battery terminal.

    6. Crank the engine to remove foreign objects before measuring the compression.

    7. A01VM0AE02
      Text in Illustration
      *a SST (attachment)
      *b SST (Compression Gauge)

      Install the SST (attachment) into the glow plug hole.

      SST
      09992-19015   ( 09992-10070, 09992-10100 )
      Torque:
      13 N*m  { 133 kgf*cm, 10 ft.*lbf }

    8. Connect SST (compression gauge) to the SST (attachment).

      SST
      09992-19015   ( 09992-10010, 09992-10020 )

    9. While cranking the engine, measure the compression pressure.

      Compression pressure
      2300 kPa (23.5 kgf/cm2, 334 psi)
      Minimum pressure
      2050 kPa (20.9 kgf/cm2, 297 psi)
      Difference between each cylinder
      500 kPa (5.0 kgf/cm2, 71 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 in as short a time as possible.

      If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the glow plug hole, and 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 leakage from the gasket.

    10. Remove the SST (compression gauge and attachment).

    11. Disconnect the cable from the negative battery terminal.

    12. Connect the 4 connectors to the 4 injector assemblies.

    13. Install the 4 glow plugs Click here.

  3. INSPECT COMPRESSION (w/o DPF)


    1. Warm up and stop the engine.

    2. Disconnect the negative battery terminal.

    3. A01VHZSE03
      Text in Illustration
      *a Vinyl Tape

      Remove the 4 glow plugs Click here.

      Note

      In order to avoid shorting the circuit of the wire harness connected to the glow plug No. 1 connector, wind vinyl tape around the wire harness terminal portion.

    4. Disconnect the 4 connectors from the 4 injector assemblies.

    5. Connect the negative battery terminal.

    6. Crank the engine to remove foreign objects before measuring the compression.

    7. A01VLK1E05
      Text in Illustration
      *a SST (attachment)

      Install the SST (attachment) into the glow plug hole.

      SST
      09992-19015   ( 09992-10070, 09992-10100 )
      Torque:
      13 N*m  { 133 kgf*cm, 10 ft.*lbf }
    8. A01VKVFE06
      Text in Illustration
      *a SST (Compression Gauge)

      Connect SST (compression gauge) to the SST (attachment).

      SST
      09992-19015   ( 09992-10010, 09992-10020 )

    9. While cranking the engine, measure the compression pressure.

      Compression pressure
      2300 kPa (23.5 kgf/cm2, 334 psi)
      Minimum pressure
      2050 kPa (20.9 kgf/cm2, 297 psi)
      Difference between each cylinder
      500 kPa (5.0 kgf/cm2, 71 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 in as short a time as possible.

      If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the glow plug hole, and 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 leakage from the gasket.

    10. Remove the SST (compression gauge and attachment).

    11. Disconnect the cable from the negative battery terminal.

    12. Connect the 4 connectors to the 4 injector assemblies.

    13. Install the 4 glow plugs Click here.