LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 4.6L - DTC P0351 To DTC P2440) >> DTC P2440 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the AIR solenoid valve.
  2. Ignition ON, connect a test lamp between the AIR solenoid voltage supply terminal 6 and the solenoid ground circuit terminal 4, the test lamp should not illuminate.
    • If the test lamp illuminates, test the AIR solenoid supply voltage circuit for a short to voltage. If the circuit tests normal, test or replace the AIR solenoid relay.
  3. Inspect the AIR pump inlet and outlet hoses/pipes for leaks or restrictions.
  4. Inspect the AIR solenoid valve for leaks.
scientia non olet · About LEMON Manuals