ENGINE ON-VEHICLE INSPECTION

PROCEDURE

  1. INSPECT ENGINE COOLANT

    Click here

  2. INSPECT ENGINE OIL

    Click here

  3. INSPECT BATTERY

    w/ Stop And Start System:Click here

    w/o Stop And Start System:Click here

  4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

    1. Remove the air cleaner cap sub-assembly.

      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.

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

      Tip:

      • If there is any foreign matter or clogs in the air cleaner filter element sub-assembly, clean it with compressed air.

      • If any foreign matter 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 sub-assembly.

      Click here

  5. INSPECT SPARK PLUG

    Click here

  6. INSPECT V-RIBBED BELT

    Click here

  7. INSPECT VALVE CLEARANCE

    Click here

  8. INSPECT IGNITION TIMING

    1. Warm up and stop the engine.

    2. When using the GTS:

      1. Connect the GTS to the DLC3.

      2. Start the engine and run it at idle.

      3. Turn the GTS on.

      4. 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

        -10.5 to 15 degrees BTDC

        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 transaxle should be in neutral or park.

      5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1 / ON.

        Powertrain > Engine and ECT > Active Test

        Active Test Display

        Connect the TC and TE1

        Data List Display

        IGN Advance

      6. Monitor IGN Advance of the Data List.

        Standard Ignition Timing

        8 to 12 degrees BTDC

        Note:

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

      7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1 / OFF.

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

      9. Turn the ignition switch off.

      10. Disconnect the GTS from the DLC3.

    3. When not using the GTS:

      1. A206183C70

        *a

        DLC3

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

        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 fan off.

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

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

      2. Remove the air cleaner cap sub-assembly.

        Click here

      3. A322069

        Connect the clip of the timing light to the wire harness as shown in the illustration.

        Note:

        Use a timing light that detects the primary signal.

      4. A322070C01

        *a

        Timing Mark

        *b

        TDC

        *c

        8 to 12 degrees BTDC

        Inspect the ignition timing at idle.

        Standard Ignition Timing

        8 to 12 degrees BTDC

        Note:

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

        Tip:

        If the crankshaft pulley timing marks are within the range shown in the illustration relative to the timing mark on the timing chain cover sub-assembly, the ignition timing is correct.

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

      6. Inspect the ignition timing at idle.

        Standard Ignition Timing

        -10.5 to 15 degrees BTDC

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

      8. Disconnect the clip of the timing light.

      9. Install the air cleaner cap sub-assembly.

        Click here

  9. INSPECT ENGINE IDLE SPEED

    1. Warm up and stop the engine.

    2. When using the GTS:

      1. Connect the GTS to the DLC3.

      2. Start the engine and run it at idle.

      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

        790 to 890 rpm

        Note:

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

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

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

      6. Turn the ignition switch off.

      7. Disconnect the GTS from the DLC3.

    3. When not using the GTS:

      1. A206183C64

        *a

        DLC3

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

        09843-18040

        Note:

        Be sure to connect the tachometer probe to the correct terminal. Connecting the wrong terminals may damage electrical components.

      2. Start the engine and run it at idle.

      3. Inspect the engine idle speed.

        Standard Idle Speed

        790 to 890 rpm

        Note:

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

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

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

      4. Turn the ignition switch off.

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

  10. INSPECT COMPRESSION

    Note:

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

    1. Check for DTCs.

      Click here

    2. Warm up and stop the engine.

    3. Remove the 3 spark plugs.

      Click here

    4. Disconnect the 3 fuel injector connectors.

      Note:

      Disable fuel injection in order to prevent catalyst damage due to unburned gasoline.

    5. A322071

      Inspect the cylinder compression pressure.

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

      2. Fully open the throttle.

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

        Standard Compression Pressure

        1550 kPa (15.8 kgf/cm2, 225 psi)

        Minimum Compression Pressure

        1160 kPa (11.9 kgf/cm2, 168 psi)

        Pressure Difference between Each Cylinder

        147 kPa (1.5 kgf/cm2, 21 psi) or less

        Note:

        • Use a fully-charged battery to obtain an engine speed of 250 rpm or more.

        • Inspect the other cylinders in the same way.

        • Measure the compression pressure as quickly as possible.

      4. 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 gasket.

    6. Connect the 3 fuel injector connectors.

    7. Install the 3 spark plugs.

      Click here

    8. 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. INSPECT CO/HC

    Tip:

    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. Insert a CO/HC meter testing probe at least 40 cm (1.3 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 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, perform troubleshooting 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

        3. Incorrect valve clearance

        4. Leaks in intake or exhaust valves

        5. Leaks in cylinders

        Low

        High

        Rough idle (Fluctuating HC reading)

        1. Vacuum leaks:

          • PCV hoses

          • Intake manifold

          • Throttle body assembly

          • Brake booster line

        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 systems:

          • Pressure regulator

          • Engine coolant temperature sensor

          • Mass air flow meter

          • ECM

          • Fuel injector assemblies

          • Throttle body assembly