Air Fuel Ratio
WARNING: This page is about a different car, the 2006 Suzuki Reno and 2006 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.
The Air Fuel Ration indicates the air to fuel ratio based on the Oxygen Sensor (O2S) inputs. The ECM uses the fuel trims to adjust fueling in order to attempt to maintain an air/fuel ratio of 14.7:1.