Pinpoint Tests C: Crankcase Ventilation Sensor: Introduction

NOTE: Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.

This pinpoint test is intended to diagnose the following:

harness circuits: CRNKCSVT, CVHC, GND, SIGRTN, VBPWR and VPWR
crankcase ventilation sensor
crankcase ventilation heater
PCM (12A650)

Fig 1: Crankcase Ventilation Sensor Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit	A	2 3 1	CRNKCSVT GND VPWR
F-650/F-750, F-Series Super Duty	A	2 3 1	CRNKCSVT SIGRTN VBPWR

Fig 2: Crankcase Ventilation Heater Assembly Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit	A	2 1	VPWR GND
F-150	A	1 2	CVHC VPWR

Fig 3: Powertrain Control Module-E (PCM-E) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-Series Super Duty	A	75 4 14	CRNKCSVT SIGRTN VBPWR
Transit	B	27	CRNKCSVT
All other vehicles	A	4	SIGRTN

Fig 4: Powertrain Control Module-T (PCM-T) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
22	CVHC (Crankcase Ventilation Heater Control)