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