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Engine Control System: ECM
- ECM (Engine Control Module) controls the engine.
- ECM consists of a microcomputer and connectors for signal input and output and for power supply.
- Battery voltage is supplied to the ECM even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc.
Courtesy of NISSAN MOTOR CO., U.S.A.