Pinpoint Test 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, SIGRTN and VBPWR
crankcase ventilation sensor
PCM (12A650)

Fig 1: Identifying Crankcase Ventilation Sensor Connector

Courtesy of FORD MOTOR CO.

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

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

Courtesy of FORD MOTOR CO.

Pin	Circuit
75	CRNKCSVT (Crankcase Ventilation)
4	SIGRTN (Signal Return)
14	VBPWR (Vehicle Buffered Power)