Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Oldsmobile >> 2000 >> Intrigue GL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1404: EGR Closed Position Performance >> Circuit Description

Circuit Description

PCM monitors EGR valve pintle position input to ensure that valve responds properly to commands from the PCM. When ignition is turned on, PCM learns the EGR closed valve pintle position. PCM compares the learned EGR closed valve pintle position to the actual position when EGR valve is commanded closed. If actual EGR position indicates that EGR valve is still open when PCM is commanding EGR closed, DTC will set.

scientia non olet · About Mike's Workshop Manuals