MIL Lamp Strategy
WARNING: This page is about a different car, the 2004 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
I/M Readiness OK to Test = Key On Engine OFF - MIL Lamp will remain on until the vehicle is started or Ignition is turned off.
I/M not ready for testing = Key On Engine OFF - MIL Lamp on solid for (15) seconds then MIL Lamp will flash on/off for (5) seconds then it will remain on until the vehicle is started or the Ignition is turned off.
The following table summarizes the various OBDII monitors operation.