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Home >> Pontiac >> 2008 >> G5 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.2L (L61) - DTC P0412 To DTC P2544 >> DTC P2430-P2433 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, verify that the AIR pump is not activated.
  2. Ignition ON, observe that the AIR Pressure Sensor parameter approximately equals the BARO parameter.
    • If not equal, verify that the BARO parameter reading is correct for your altitude. Refer to Altitude Versus Barometric Pressure . If the reading is not correct for your altitude, diagnose the MAP sensor. Refer to DTC P0106 . If the BARO parameter is correct for your altitude, proceed with Circuit/System Testing.
  3. Engine running, enable the AIR system with a scan tool and observe that the AIR Pressure Sensor parameter equals approximately 8-10 kPa above BARO.
    • If less than the specified range, verify that the AIR pump is activating. If AIR pump activation is normal, proceed with Circuit/System Testing.
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