Component Inspection

Check EGR S/V
1. Ignition "OFF"
2. Detach EGR valve.
3. Check EGR valve for sticking or carbon deposit.
4. Apply a vacuum to EGR SA/ and ckeck that vaccum is kept hold.
5. Blow air on one side of EGR valve and check that air is not passed through(when a vacuum is not applied).
6. Blow air on one side of EGR valve and check that air is passed through(when the vacuum which operate EGR valve is applied).
7. Attach EGR valve with using a new gasket.
8. Perform EGR actuation Test with Scantool .
  
  Fig 1: Performing EGR Actuation Test With Scantool
  Courtesy of KIA MOTORS AMERICA, INC.
9. Is the EGR valve working properly ?
  Yes
  - Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known - good EGR Valve and check for proper operation. If the problem is corrected, replace EGR Valve and go to "VERIFICATION OF VEHICLE REPAIR " procedure.