Fail-Safe Mode
WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
When malfunction is detected, ECM enters fail-safe mode and MIL illuminates. When in fail-safe mode, ECM stops electric throttle control actuator control and throttle valve is maintained at a fixed opening (about 5 degrees) by the return spring.