Operation When Intelligent Key Is Carried (For 2.0L Turbo Gasoline Engine Models)

WARNING: This page is about a different car, the 2019 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

When the push-button ignition switch is pressed, the BCM activates the inside key antenna and transmits the request signal to the Intelligent Key.
The Intelligent Key receives the request signal and transmits the Intelligent Key ID signal to the BCM.
BCM receives the Intelligent Key ID signal via remote keyless entry receiver and verifies it with the registered ID.
BCM turns ACC relay ON and transmits the ignition power supply ON signal to IPDM E/R.
IPDM E/R turns ignition relay ON and starts the ignition power supply.
BCM receives an engine status signal from ECM via CAN communication, and recognizes that the engine is not started.
When BCM performs ID verification with ECM and detects that the verified result is OK, the engine start conditions are satisfied. BCM transmits an engine start request signal to ECM via CAN communication.
When ECM receives an engine start request signal from BCM via CAN communication, ECM activates the starter motor and starts the engine.
When ECM recognizes that the engine is started, ECM transmits an engine status signal (RUN) to BCM via CAN communication.
When BCM receives an engine status signal from ECM via CAN communication, BCM recognizes that the engine is started.

*: For the engine start condition, refer to "IGNITION SWITCH POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERATION ".

CAUTION: When the Intelligent Key is carried outside of the vehicle (inside key antenna detection area) while the power supply is in the ACC or ON position, even if the engine start condition* is satisfied, the engine cannot be started.