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Tests HE: Exhaust Gas Recirculation (EGR) Systems



PINPOINT TEST HE: EXHAUST GAS RECIRCULATION (EGR) SYSTEMS

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)

Typical DPFE EGR System

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