Tests HE: Exhaust Gas Recirculation (EGR) Systems

Exhaust Gas Recirculation (EGR) System:

NOTE
This Pinpoint Test is intended to diagnose the following:
- Differential pressure feedback EGR sensor
- Exhaust Gas Recirculation (EGR) valve
- EGR vacuum regulator solenoid
- Orifice tube assembly
- Differential pressure feedback EGR sensor pressure hoses
- Vacuum lines
- Harness circuits: VREF, DPFE, SIG, SIG RTN, EVR, EVR PWR
- Powertrain Control Module (PCM)

Pinpoint Test Schematics and Connectors

Taurus/Sable 3.0L 4V (Differential Pressure Feedback EGR Sensor):

LS6/LS8 (Differential Pressure Feedback EGR Sensor):

All Others (Differential Pressure Feedback EGR Sensor):

LS6/LS8 (EGR Vacuum Regulator Solenoid):

All Others (EGR Vacuum Regulator Solenoid):

Pinpoint Tests