Circuit/System Verification

WARNING: This page is about a different car, the 2006 Saturn Ion 3 and 2006 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.

With the engine RUNNING, enable the AIR pump and observe that the AIR Pressure Sensor parameter increases from approximately BARO to approximately 20-25 kPa above BARO.
- If the AIR Pressure Sensor parameter does not transition correctly then proceed with Circuit/System Testing.