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.

Vehicle	Connector	Pin	Circuit
F-Series Super Duty	A	2 6 3 1 5	EGRVCH EGRVCL EGR SIGRTN VREF
F-150	B	1 2 5 4 3	EGRVCH EGRVCL EGR SIGRTN VREF
All other vehicles	A	1 5 2 4 6	EGRVCH EGRVCL EGR SIGRTN VREF

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

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Transit	A	45 46 26	EGRVCH EGRVCL EGR
All other vehicles	B	81 82 61	EGRVCH EGRVCL EGR