Bulb Check
WARNING: This page is about a different car, the 2006 Dodge Viper. However, it is still accessible from the selected car via links, so may be relevant.
Key on: Bulb illuminated until vehicle starts, as long as all once per trip (readiness) monitors completed. If monitors have not been completed, then: Key on: bulb check for approximately 14 seconds, lamp then flashes (once per second) for approximately 11 seconds, then MIL remains illuminated until vehicle is started.