PCV Valve: Inspection

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT VENTILATION VALVE SUB-ASSEMBLY
1. Install a clean hose to the ventilation valve sub-assembly.
  
  Fig 1: Removing/Installing Installing Clean Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check ventilation valve sub-assembly operation.
  1. Blow air into the engine side, and check that air passes through easily.
    CAUTION: Do not suck air through the ventilation valve sub-assembly. Petroleum substances inside the ventilation valve sub-assembly are hazardous to your health.
  2. Blow air into the intake manifold side, and check that air passes through with difficulty. If the result is not as specified, replace the ventilation valve sub-assembly.
3. Remove the clean hose from the ventilation valve sub-assembly
Fig 2: Removing/Installing Clean Hose
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002