Pinpoint Tests KD: Electric Exhaust Gas Recirculation (EEGR) System: Introduction

WARNING: TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, INCLUDING INSTRUCTIONS TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE HARNESS TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

This pinpoint test is intended to diagnose the following:

EEGR system
EEGR stepper motor (9D475)
harness circuits: EGRMC1, EGRMC2, EGRMC3, EGRMC4 and VPWR
PCM (12A650)

Fig 1: Identifying Electric Exhaust Gas Recirculation (EEGR) Assembly Connector
Courtesy of FORD MOTOR CO.

Pin	Circuit
6	EGRMC4 (EGR Motor Control 4)
5	VPWR (Vehicle Power)
4	EGRMC3 (EGR Motor Control 3)
3	EGRMC2 (EGR Motor Control 2)
2	VPWR (Vehicle Power)
1	EGRMC1 (EGR Motor Control 1)

Fig 2: Identifying Manifold Absolute Pressure (MAP) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
1	MAP (Manifold Absolute Pressure)
4	SIGRTN (Signal Return)
2	VREF (Reference Voltage)

Fig 3: Identifying Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
E11	EGRMC4 (EGR Motor Control 4)
E40	EGRMC3 (EGR Motor Control 3)
E41	EGRMC2 (EGR Motor Control 2)
E12	EGRMC1 (EGR Motor Control 1)