Pinpoint Tests W: Exhaust Gas Recirculation (EGR) System: 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: VREF, EGRVCH, EGRVCL, EGR and SIGRTN
EGR valve (9D475)
PCM (12A650)

Fig 1: Exhaust Gas Recirculation (EGR) Valve Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VREF (Reference Voltage)	5
EGR (Exhaust Gas Recirculation)	3
EGRVCL (Exhaust Gas Recirculation Valve Control Low)	6
EGRVCH (Exhaust Gas Recirculation Valve Control High)	2
SIGRTN (Signal Return)	1

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

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
EGR (Exhaust Gas Recirculation)	61
EGRVCL (Exhaust Gas Recirculation Valve Control Low)	82
EGRVCH (Exhaust Gas Recirculation Valve Control High)	81