Pinpoint Test HG: Positive Crankcase Ventilation (PCV) System: Introduction
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, 2010 Lincoln Town Car, and 2010 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
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
- electrically heated PCV fitting (9F624) and heater circuit
- powertrain control module (PCM) (12A650)
For PCM connector views or reference values, refer to REFERENCE VALUES .
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR PIN REFERENCE CHART
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series, F-150 2V 4.6L |
190-Pin | E6 E7 |
PCVHC PCVHF |
| Escape/Mariner, Fusion, Milan |
190-Pin | E6 | PCVHC |
| F-150 3V 4.6L, F-150 5.4L |
190-Pin | E7 | PCVHF |
| Flex, MKS, Taurus |
190-Pin | E7 E8 |
PCVHC PCVHF |
| Mustang 5.4L | 170 Pin | E67 | PCVHC |
| All other vehicles | 170 Pin | E3 | PCVHC |