Pinpoint Test Hg: Positive Crankcase Ventilation (PCV) System: Introduction: Notes
WARNING: This page is about a different variant/trim than selected.
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
- powertrain control module (PCM) (12A650)
- PCV thermal extension harness (12A580)
NOTE:
For the electrically heated PCV system only, refer to
POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM
.