R6 - Check Positive Ventilation (PCV) System

^ Go to Pinpoint Test HG and perform the Positive Crankcase Ventilation (PCV) system diagnostic procedures. See Powertrain Management/Emission Control Systems/Testing and Inspection.

^ Is the PCV system OK?

YES -- Go to R7. R7 - Check Evaporative Emission (EVAP) System

NO -- Service as necessary.