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.

Harness Side

Circuit	Pin
VBPWR (Vehicle Buffered Power)	1
SIGRTN (Signal Return)	3
CRNKCSVT (Crankcase Ventilation)	2

Fig 2: Powertrain Control Module-E (PCM-E) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VBPWR (VBPWR Crankcase Ventilation Sensor)	14
SIGRTN (Signal Return)	4
CRNKCSVT (Crankcase Ventilation)	75

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

Courtesy of FORD MOTOR CO.

Harness Side

Circuit