Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Buick >> 2006 >> Lucerne CXS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.6L - DTC P0403 To DTC P1381 >> DTC P0449 >> Circuit/System Verification

Circuit/System Verification

  1. With the ignition ON and the engine OFF, command the EVAP vent solenoid ON and OFF with a scan tool.
  2. Listen or feel for a click when the valve operates. Verify that both the ON and the OFF states are commanded.
scientia non olet · About Mike's Workshop Manuals