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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Engine Mechanical >> Auxiliary Emission Control Systems >> Emission Control System - Service Information >> PCV Valve >> Inspection [10/2017 - ] >> Procedure

Inspection [10/2017 - ]: Procedure

  1. INSPECT PCV VALVE 
    WARNING:
    • When inspecting the PCV valve, do not suck air through the valve.
    • There are blow-by gas substances remaining inside the PCV valve that are harmful to inhale.
    GTY657994Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install a hose to the PCV valve.
    2. Check PCV valve operation.
      1. Blow air into the cylinder head cover sub-assembly LH side, and check that air passes through easily.
        GTY502416Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Hose
        *b Air
        Cylinder Head Cover Sub-assembly LH Side
        WARNING:

        Do not suck air through the PCV valve. Petroleum substances inside the PCV valve are hazardous to your health.

        If the result is not as specified, replace the PCV valve.

      2. Blow air into the intake air surge tank assembly side, and check that air passes through with difficulty.
        GTY517336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Hose
        *b Air
        Intake Air Surge Tank Assembly Side
        WARNING:

        Do not suck air through the PCV valve. Petroleum substances inside the PCV valve are hazardous to your health.

        If the result is not as specified, replace the PCV valve.

    3. Remove the hose from the PCV valve.