toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Sensors and Switches - Emission Control Systems > < Positive Crankcase Ventilation|Locations|Page 2046
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Positive Crankcase Ventilation: Testing and Inspection

1.

Remove PCV valve.

PCV Valve Test

2.

Install clean hose to PCV valve and blow air from cylinder head side. Ensure air passes freely through valve.

3.

Blow air through air intake side of valve. Ensure air passes with difficulty.

4.

If PCV valve test results are as described, replace valve.

5.

Remove hose, reinstall valve.

PCV Hose Connections

6.

Visually inspect hoses, connections and gaskets for leaks, cracks or other damage.

Sensors and Switches - Emission Control Systems > < Positive Crankcase Ventilation|Locations|Page 2046