Pinpoint Tests O: Water In Fuel (WIF) 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:

fuel system contamination
harness circuits: WIF and SIGRTN
WIF sensor (9T321)

Fig 1: Water In Fuel (WIF) Sensor Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-Series Super Duty	A	2 1	SIGRTN WIF
Transit	B	2 1	SIGRTN WIF
All other vehicles	C	1 2	SIGRTN WIF

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

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit	A	35 31	SIGRTN WIF
All other vehicles	B	44 24	SIGRTN WIF