EMISSION CONTROL SYSTEM(w/o EGR System) ON-VEHICLE INSPECTION

PROCEDURE

  1. CHECK PURGE VSV

    1. Connect the intelligent tester to the DLC3.

    2. Remove the V-bank cover (Click hereClick hereClick hereClick here).

    3. A250469

      Disconnect the hose (connected to the canister) from the purge VSV.

    4. Start the engine and turn the intelligent tester on.

    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Activate the VSV for Evap Control

      OK

      Tester Operation

      Specified Condition

      EVAP VSV: OFF

      Purge VSV has no suction

      EVAP VSV: ON

      Purge VSV has suction

    6. Connect the hose (connected to the canister) to the purge VSV.

    7. Install the V-bank cover (Click hereClick hereClick hereClick hereClick here).

  2. INSPECT FUEL CUT-OFF RPM

    1. Start and warm up the engine.

    2. Open the throttle valve and maintain the engine speed at 3000 rpm.

    3. Use a sound scope to check for injector operating sounds.

    4. Check that when the accelerator pedal is released, injector operating sounds stop momentarily and then resumes.

      If the result is as not specified, check the injector, wiring and ECM.

  3. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS

    1. Check that there are no cracks, leaks or damage.

      Note:

      • Detachment or other problems with the engine oil dipstick, filler cap, ventilation hose and other components may cause the engine to run improperly.

      • Disconnection, looseness or cracks in the parts of the air induction system between the throttle body and cylinder head will allow air suction and cause an engine failure or engine failure malfunctions.

      If the result is not as specified, replace parts as necessary.

  4. CHECK HOSES AND CONNECTORS

    1. Visually check for loose connections, sharp bends or damage.

  5. CHECK FUEL TANK ASSEMBLY

    1. Visually check for deformation, cracks or fuel leakage.

  6. INSPECT SECONDARY AIR INJECTION SYSTEM OPERATION

    1. Start the engine and warm it up.

    2. Turn the engine switch off.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the engine switch on (IG) and turn the intelligent tester on.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Air Injection Check / Manual Mode / AIR PUMP: ON, ASV1: OPEN, ASV2: OPEN and AIR PUMP: OFF, ASV1: CLOSE, ASV2: CLOSE.

      Tip:

      When Manual Mode is selected, intelligent tester initialization (atmospheric pressure measurement) is performed automatically. Initialization takes 10 seconds. After initialization, AIR PUMP and ASV operation can be selected.

    6. Start the engine.

    7. Perform the AIR system intrusive operation while the engine is idling.

    8. Check that the air pump (AIR PUMP), ASV and pressure in the AIR system passage (PRESSURE) status displayed on the intelligent tester indicate the conditions shown in the table below.

      Standard

      Tester Operation

      AIR PUMP

      ASV

      PRESSURE*1

      PULSATION*2

      AIR PUMP: ON, ASV: OPEN

      ON

      ON

      2.4 kPa or higher

      20 kPa or higher

      AIR PUMP: OFF, ASV: CLOSE

      OFF

      OFF

      Below 2.4 kPa

      Below 30 kPa

      *1:

      Average pumping pressure (gauge pressure). The pressure should be 2.4 kPa or higher when the AIR system operates.

      *2:

      The cumulative exhaust pulsation calculated by the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system.

    9. Turn the engine switch off.

      Note:

      • Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds.

        Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks.

        While AIR system operation using the intelligent tester is prohibited, the intelligent tester display indicates the prohibition (WAIT or ERROR).

        If ERROR is displayed on the intelligent tester during the test, stop the engine for 10 minutes, and then try again.

      • Performing Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between Air Injection Check operations to prevent the system from overheating.

      • When performing the Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running.

      • Turn the engine switch off when the Air Injection Check operation finishes.