DTC P1124 Or DTC P1126: Description
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.
Power supply for throttle control motor is provided to ECM via throttle control motor relay. Throttle control motor relay is ON/OFF controlled by ECM. When ignition switch is turned ON, ECM sends an ON signal to throttle control motor relay and battery voltage is provided to ECM. When ignition switch is turned OFF, ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to ECM.