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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 >> Repair Verification

Repair Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON, enable and disable the AIR solenoid relay and observe that the check valve operates.
  2. Inspect the AIR hoses/pipes between the pump and the shut-off valve for leaks.
  3. Engine running, enable the AIR pump relay and observe that the AIR Pressure Sensor parameter increases to approximately 10-20 kPa above BARO.
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