DTC Description: Notes
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
The Engine Control Module (ECM) controls engine operation. It interprets signals from sensors to determine outputs for actuators and fueling control. The ECM gathers and maintains data in it's internal memory. The ECM receives battery voltage through the battery supply circuit. The ECM receives ignition voltage through the ignition supply circuit when the ignition switch is in the ON or START position.