Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

Perform this test when instructed by QUICK TEST. This test is only intended to diagnose:

Differential Pressure Feedback (DPF) EGR Sensor
Faulty EGR Valve
EGR Vacuum Regulator (VR) Solenoid
Orifice Tube Assembly. See Fig 1.
DPFEGR Sensor Pressure Hoses
Vacuum Lines
Wiring Harness Circuits (DPFEGR, EVR, EVR PWR, SIG, SIG RTN & VREF)
Faulty Powertrain Control Module (PCM)

Fig 1: Identifying DPFEGR System Components

Courtesy of FORD MOTOR CO.

Fig 2: Identifying DPFEGR Sensor Wiring Harness Connector Terminals (Continental, Cougar 2.5L, Crown Victoria NGV, & Econoline, Excursion & Pickup 5.4L - California)

Courtesy of FORD MOTOR CO.

Fig 3: Identifying DPFEGR Sensor Wiring Harness Connector Terminals (Explorer, LS, Mountaineer & Thunderbird)

Courtesy of FORD MOTOR CO.

Fig 4: Identifying DPFEGR Sensor Wiring Harness Connector Terminals (All Others)

Courtesy of FORD MOTOR CO.