ENGINE ON-VEHICLE INSPECTION

PROCEDURE

  1. INSPECT ENGINE COOLANT

    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.

    2. Remove the air cleaner filter element sub-assembly.

    3. Visually check that the air cleaner filter is not excessively damaged or oily.

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

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

    5. Install the air cleaner cap.

  5. INSPECT SPARK PLUG

    Click here

  6. INSPECT FAN AND GENERATOR V BELT

    Click here

  7. INSPECT VALVE LASH ADJUSTER ASSEMBLY NOISE

    1. Put the engine in inspection mode (maintenance mode).

      Click here

    2. Warm up the engine.

    3. Check that the engine does not emit unusual noises.

    4. If unusual noises occur, warm up the engine and idle it for over 30 minutes. Then perform the inspection above again.

      Tip:

      If any defects or problems are found during the inspection above, check the valve lash adjuster assembly.

      Click here

  8. INSPECT IGNITION TIMING

    1. Put the engine in inspection mode (maintenance 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 (maintenance mode).

        Click here

      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

        5 to 20° BTDC @ idle

        Note:

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

        • Check the ignition timing with the cooling fans off.

        • When checking the ignition timing, the shift lever should be in P.

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

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

        Powertrain > Engine and ECT > Active Test

        Tester Display

        Connect the TC and TE1

      7. Monitor IGN Advance of the Data List.

        Standard ignition timing

        8 to 12 BTDC @ idle

        Note:

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

        • Check the ignition timing with the cooling fans off.

        • When checking the ignition timing, the shift lever should be in P.

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

      9. Turn the power switch off.

      10. Disconnect the GTS from the DLC3.

    4. When not using the GTS:

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

        Note:

        Use a timing light that detects primary signals.

      2. Put the engine in inspection mode (maintenance mode).

        Click here

      3. A206183C25

        *a

        Front view of 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 can damage the engine.

        • When checking the ignition timing, the shift lever should be in P.

      4. Using a timing light, check the ignition timing.

        Standard ignition timing

        8 to 12° BTDC @ idle

        Note:

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

        • Check the ignition timing with the cooling fans off.

        • When checking the ignition timing, the shift lever should be in P.

      5. Remove SST from the DLC3.

      6. Check the ignition timing.

        Standard ignition timing

        5 to 20° BTDC @ idle

        Note:

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

        • Check the ignition timing with the cooling fans off.

        • When checking the ignition timing, the shift lever should be in P.

        If the ignition timing is not as specified, check the valve timing.

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

      8. Turn the power switch off.

      9. Disconnect the timing light from the engine.

  9. INSPECT ENGINE IDLE SPEED

    1. Put the engine in inspection mode (maintenance 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 (maintenance mode).

        Click here

      3. Start the engine and run it at idle.

      4. Turn the GTS on.

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

        Powertrain > Engine and ECT > Data List

        Tester Display

        Engine 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 lever should be in P.

      6. Disconnect the GTS from the DLC3.

    4. When not using the GTS:

      1. A206183C26

        *a

        Front view of DLC3

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

        09843-18030

        Note:

        Confirm the terminal number before connecting the probe. Connecting the wrong terminals can damage the engine.

      2. Put the engine in inspection mode (maintenance mode).

        Click here

      3. Start the engine and run it at idle.

      4. Check the 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 lever should be in P.

      5. Disconnect the tachometer probe from the DLC3.

  10. INSPECT COMPRESSION

    1. Put the engine in inspection mode (maintenance mode).

      Click here

    2. Warm up and stop the engine.

    3. Check for DTCs.

    4. Remove the 4 spark plugs.

      Click here

      Note:

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

    5. Check 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.

        Note:

        Check the HV battery voltage in the Data List to ensure that the battery is fully charged.

      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).

        Standard compression pressure

        1100 kPa (11.2 kgf/cm2, 160 psi) or higher

        Minimum compression pressure

        800 kPa (8.2 kgf/cm2, 116 psi)

        Pressure difference between each cylinder

        100 kPa (1.0 kgf/cm2, 15 psi) or less

        Note:

        • Inspect the other cylinders in the same way.

        • Measure the compression pressure as quickly as possible.

        • Noise may be emitted from the hybrid vehicle transaxle assembly. However, this is not a malfunction.

      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 the cylinder compression pressure again.

        Tip:

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

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

    6. Remove the compression gauge.

    7. Install the 4 spark plugs.

      Click here

    8. Clear the DTCs.

      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. Put the engine in inspection mode (maintenance mode).

      Click here

    2. Start the engine.

    3. Keep the engine speed 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 during idling.

    5. Immediately check the CO/HC concentration at idle and at 2500 rpm.

      Tip:

      • When performing the 2-mode (2500 rpm and idle) test, follow the measurement order prescribed by the applicable local regulations.

      • If the CO/HC concentration does not comply with regulations, troubleshoot in the order given below.

      1. Check the air fuel ratio sensor operation.

        Click here

      2. Check the heated oxygen sensor operation.

        Click here

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

        CO

        HC

        Symptom

        Causes

        Normal

        High

        Rough idle

        • 1. Faulty ignition

          • Incorrect timing

          • Fouled, shorted or improperly gapped plugs

        • 2. Incorrect valve clearance (valve lash adjuster assembly)

        • 3. Leaky intake and exhaust valves

        • 4. Leaky cylinder

        • 5. Faulty EGR (w/ EGR System)

        Low

        High

        Rough idle

        (Fluctuating HC reading)

        • 1. Vacuum leaks

          • PCV hose

          • Intake manifold

          • Throttle body

        • 2. Lean mixture causing misfire

        • 3. Faulty EGR (w/ EGR System)

        High

        High

        Rough idle

        (Black smoke from exhaust)

        • 1. Restricted air filter

        • 2. Plugged PCV valve

        • 3. Faulty SFI system

          • Faulty fuel pressure

          • Defective engine coolant temperature sensor

          • Faulty ECM

          • Faulty fuel injector assembly

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

          • Faulty mass air flow meter

        • 4. Faulty EGR (w/ EGR System)