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:
Electrically heated PCV system only, refer to
POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM
for additional information.