Circuit/System Verification
- If any other AIR DTCs are set, perform those diagnostics first.
- Engine running, observe that the AIR Pressure Sensor parameter approximately equals barometric pressure (BARO).
- Engine running, enable the AIR pump with a scan tool and observe that the AIR Pressure Sensor parameter equals approximately 15-22 kPa above BARO.
- 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.