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.

B00697X

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

  6. PERFORM DPF FORCIBLE REGENERATION PROCEDURE (w/ DPF)


    1. Disconnect the cable from the negative (-) battery terminal or remove the EFI fuse for 1 minute or more.

      Tech Tips


      • If the MIL is illuminated, first clear the DTCs using the intelligent tester, and then initialize the value for the amount of particulate matter recorded by the ECM by disconnecting the cable from the negative (-) battery terminal or removing the EFI fuse. Otherwise, forced DPF regeneration cannot be performed using the Active Test.

      • If the MIL is not illuminated, proceed to the next step, as initialization is not necessary.

    2. Connect the intelligent tester to the DLC3.

    3. Start the engine and warm up it.

      Tech Tips


      • Make sure the engine coolant temperature sensor reaches 70°C (158°F) or higher.

      • Make sure the No. 3 exhaust gas temperature sensor reaches 115°C (239°F) or higher.

    4. for Manual Transmission:

      Move the shift lever to N and set the parking brake.

    5. for Automatic Transmission:

      Move the shift lever to P and set the parking brake.

    6. Turn the tester on.

    7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the DPF Rejuvenate (PM).


      Powertrain > Engine > Active Test
      Tester Display
      Activate the DPF Rejuvenate (PM)
      B0026PAE06

      CAUTION:

      Before performing the Active Test, make sure that there are no combustible materials around the DPF and tailpipe.

      Note

      If the ambient temperature is 30°C (86°F) or higher, the DPF and surrounding area become very hot. Use a fan, etc. to cool the exhaust gas temperature sensors, air-fuel ratio sensor and surrounding areas.

      B0024Z7C01
      *a Air

      Tech Tips


      • During the Active Test, the engine speed increases to 2000 rpm, and then decreases to a speed between 1200 and 1400 rpm which is determined by the intake air temperature. The Active Test then continues with the engine running at that speed.

      • The engine speed increases during the Active Test and the engine speed returns to idle when the Active Test is completed.

      • The time it takes to complete the Active Test varies depending on the PM volume stored. However, it usually takes approximately 30 minutes or more to complete the Active Test.

      • Do not cancel the Active Test unless absolutely necessary.

      • If the Active Test needs to be canceled, depress the accelerator pedal and race the engine or depress the clutch pedal to cancel the process. Even if the Active Test is stopped before it finishes, "Compl(complete) for DPNR/DPF Status Reju(PM)" is displayed on the intelligent tester. If the Active Test is canceled, it must be performed again.

      • If the differential pressure value increases too much during the Active Test, the fail-safe function activates and the Active Test is stopped.

      • It may not be possible to perform the Active Test when the ambient temperature is extremely low or the elevation is extremely high. In this case, perform the Active Test indoors (with the tailpipe pointed towards the outside) or drive the vehicle at a speed of approximately 60 km/h (37 mph) or more for approximately 30 minutes or more to perform regeneration.

      • Depending on various conditions, the Active Test may not be completed within 30 minutes. If 60 minutes elapse, the system stops the Active Test and illuminates the MIL. If this happens, disconnect the cable from the negative (-) battery terminal or remove the EFI fuse for 1 minute or more so that the MIL turns off, and then perform the Active Test again.