Fuel/Adaptive Memories: Description
WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
In Open Loop, the PCM changes pulse width without feedback from the O2 Sensors. Once the engine warms up to approximately -1.1° to 1.6°C (30° to 35° F), the PCM goes into closed loop Short Term Correction and utilizes feedback from the O2 Sensors. Closed loop Long Term Adaptive Memory is maintained above 77° to 88°C (170° to 190°F) unless the PCM senses wide open throttle. At that time the PCM returns to Open Loop operation.