LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 2004 >> Monterey >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Test Hd: Misfire Detection Monitor Through Pinpoint Test HY: Generator/Regulator System - CNG, Flex-Fuel & Gasoline >> Pinpoint Test HG: Positive Crankcase Ventilation (PCV) System >> Introduction >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.