Pinpoint Test Hg: Positive Crankcase Ventilation (PCV) System: Introduction

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 .

Fig 1: Positive Crankcase Ventilation (PCV) Connector (1 Of 2)

Courtesy of FORD MOTOR CO.

Fig 2: Positive Crankcase Ventilation (PCV) Connector (2 Of 2)

Courtesy of FORD MOTOR CO.

Fig 3: Positive Crankcase Ventilation Heated Fitting (PCVHF) Connector

Courtesy of FORD MOTOR CO.

Fig 4: Positive Crankcase Ventilation Thermal Extension - Harness Side (PCVTE-Harness Side)

Courtesy of FORD MOTOR CO.

This table is only for vehicles equipped with a PCM controlled PCV heater.

POWERTRAIN CONTROL MODULE (PCM) CONNECTOR

Vehicle	Connector	Pin	Circuit
E-Series 4.6L, F-150 2V 4.6L	190-Pin	E6 E7	PCVHC PCVHF
E-Series 6.8L, F-Super Duty	170 Pin	E2	PCVHC
Escape/Mariner	190-Pin	E6	PCVHC
Expedition, F-150 3V 4.6L, F-150 5.4L, Navigator	190-Pin	E7	PCVHF
Fusion, Milan	140 Pin	E2	PCVHC
Mustang 5.4L	170 Pin	E67	PCVHC
All other vehicles	170 Pin	E3	PCVHC