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Circuit/System Verification

  1. If any other AIR DTCs are set, perform those diagnostics first.
  2. Engine running, observe that the AIR Pressure Sensor parameter approximately equals barometric pressure (BARO).
  3. Engine running, enable the AIR pump with a scan tool and observe that the AIR Pressure Sensor parameter equals approximately 15-20 kPa above BARO.
  4. Engine running, enable the AIR solenoid with a scan tool and observe that the AIR Pressure Sensor parameter equals approximately 8-10 kPa above BARO.
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