EGR VALVE INSPECTION

PROCEDURE


  1. VISUALLY CHECK ELECTRIC EGR CONTROL VALVE ASSEMBLY


    1. Visually check the electric EGR control valve assembly for deposits.

      Note


      • When cleaning the electric EGR control valve assembly, make sure the valve is completely closed.

      • Do not forcibly open the valve as it may be damaged or deformed.

      • When cleaning the electric EGR control valve assembly, use a piece of cloth soaked with cleaning solvent. Spraying the solvent directly onto this part or soaking the part in solvent may damage the part.

    2. B003LCWC01
      *a Seal Ring End
      *b Gap
      *c CORRECT
      *d INCORRECT

      Hold the electric EGR control valve assembly up to a light, and then from the side indicated by the arrow in the illustration, visually check that there is no gap between the valve and body.

      OK
      No light passes through (there is no gap between the valve and body).

      Tech Tips

      Light passes through part even if the valve is completely closed as there is an opening in the seal ring of the valve, this is not a problem.

      If light passes through (there is a gap between the valve and body), replace the electric EGR control valve assembly.

  2. INSPECT NO. 2 EGR VALVE ASSEMBLY

    Note


    • Do not forcibly open the valve as it may be damaged or deformed.

    • When cleaning the No. 2 EGR valve assembly, use a piece of cloth soaked with cleaning solvent. Spraying the solvent directly onto this part or soaking the part in solvent may damage the part.


    1. B003RYR

      When a vacuum of 69.7 kPa (523 mmHg, 20.6 in.Hg) is applied to the diaphragm chamber, check that the valve turns and air flows out.

    2. Maintaining the above conditions, check that there are no leaks and the valve does not return.

    3. Check that the valve does not have heavy carbon deposits and is not stuck.

      If necessary, replace the No. 2 EGR valve assembly.