Pinpoint Test HG: Positive Crankcase Ventilation (PCV) System: Introduction: Notes
NOTE:
This pinpoint test is intended to diagnose the following:
- Positive crankcase ventilation (PCV) valve (6A666) and related vacuum lines.
- Electrically heated PCV valve (6A666) and heater circuit. Both PCM and non-PCM controlled.
- Electrically heated PCV tube (9F624) and heater circuit. Both PCM and non-PCM controlled.