Input/Output Signal Chart

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WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Electronic Ignition (EI) System Input/Output Signal Chart

Courtesy of NISSAN MOTOR CO., U.S.A.

This signal is sent to the ECM through CAN communication line.
ECM determines the start signal status by the signals of engine speed and battery voltage.