Ethanol Mixture Ratio Adaptation: Description
WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
Ethanol mixture ratio adaptation is an operation to change the ethanol mixture ratio presumed by ECM. It must be performed when engine does not start after replacing ECM. It is not necessary to be performed when engine can start.