EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

CAUTION:

To prevent injury due to contact with an operating fan and generator V belt or cooling fan, keep your hands and clothing away from the fan and generator V belt and cooling fans when working in the engine compartment with the engine running.

B003PKE

Tech Tips

When there is a malfunction which causes the EGR system to remain on, black or white smoke may be emitted from the exhaust pipe.

PROCEDURE


  1. CHECK SEATING OF EGR VALVE


    1. Check that the engine starts and idles.

    2. Stop the engine.

  2. CHECK ELECTRIC EGR CONTROL VALVE ASSEMBLY OPERATION


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position.

    4. Check the Data List.

      Enter the following menus: Powertrain / Engine and ECT / Data List / Target EGR Valve Pos and Actual EGR Valve Pos


      Powertrain > Engine and ECT > Active Test
      Active Test Display
      Control the EGR Step Position
      Data List Display
      Target EGR Valve Pos
      Actual EGR Valve Pos
      OK
      Control Range Condition Specified Condition
      Active Test performed (Set EGR position to 0% → 30% → 60% → 90% → 60% → 30% → 0%) Actual EGR valve opening percentage changes according to Active Test operation

      If the result is not as specified, refer to DTC P042E.


  3. INSPECT NO. 2 EGR VALVE ASSEMBLY (w/ EGR Cooler)

    Click here

  4. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS


    1. Visually check that the hoses, connections and gaskets have no cracks, leaks or damage.

      Note


      • Detachment or other problems with the engine oil level dipstick, oil filler cap sub-assembly, PCV hose or other components may cause the engine to run improperly.

      • Air suction caused by disconnections, looseness or cracks in the parts of the air induction system between the diesel throttle body assembly and cylinder head sub-assembly will cause engine failure or engine malfunctions.

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

  5. CHECK VACUUM PUMP ASSEMBLY

    Click here