Pinpoint Test He: Exhaust Gas RECIRCULATION (EGR) Systems: Introduction: Notes

This pinpoint test is intended to diagnose the following:

• differential pressure feedback EGR (DPFE) sensor (9J460)
• exhaust gas recirculation (EGR) valve (9D460) (9D475)
• EGR vacuum regulator (EVR) solenoid (9J459)
• orifice tube assembly (9D477)
• DPFE sensor pressure hoses
• vacuum lines
• harness circuits: VREF, DPFE, SIGRTN, EVR, VPWR
• powertrain control module (PCM) (12A650)

Fig 1: Typical DPFE EGR System

Courtesy of FORD MOTOR CO.

Fig 2: Differential Pressure Feedback EGR (DPFEGR) Sensor Connector

Courtesy of FORD MOTOR CO.

Fig 3: Electronic Vacuum Regulator (EVR) Solenoid Connector

Courtesy of FORD MOTOR CO.