Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2011 Toyota Matrix S, AWDFACTORY OEM SERVICE PROCEDURE

PCV Valve: Inspection: Inspection

INSPECT VENTILATION VALVE SUB-ASSEMBLY
1. Install a clean hose to the ventilation valve sub-assembly.
  
  Fig 1: Inspecting Ventilation Valve Operation From Cylinder Head Side
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect ventilation valve operation.
  1. Blow air into the cylinder head side, and check that air passes through easily.
    WARNING:
    Do not suck air through the valve. Petroleum substances inside the valve are hazardous to your health.
  2. Blow air into the intake manifold side, and check that air passes through with difficulty.
    
    Fig 2: Checking Air Passes (Blow Air Into Intake Manifold Side)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the result is not as specified, replace the ventilation valve sub-assembly.
3. Remove the clean hose from the ventilation valve sub-assembly.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.