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Home >> Infiniti >> 2011 >> FX35 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Security Control System (CROSSCABRIOLET)) >> System Description >> System >> Intelligent Key System/Engine Start Function >> INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION : System Description >> Operation When Intelligent Key Is Carried
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Operation When Intelligent Key Is Carried

WARNING: This page is about a different car, the 2011 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. When push-button ignition switch is pressed, BCM activates inside key antenna and transmits the request signal to Intelligent Key.
  2. Intelligent Key receives the request signal and transmits the Intelligent Key ID signal to BCM.
  3. BCM receives the Intelligent Key ID signal via remote keyless entry receiver, and verifies it with the registered ID.
  4. If the verification result is OK, BCM turns ACC relay ON and transmits the ignition power supply ON signal to IPDM E/R.
  5. IPDM E/R turns ignition relay ON and starts the ignition power supply.
  6. BCM detects that selector lever is in the P or N position.
  7. BCM transmits the starter request signal via CAN communication to the IPDM E/R, then energizes starter relay in the IPDM E/R, only if the BCM judges that the engine start condition* is satisfied.
  8. IPDM E/R energizes the starter control relay ON when receiving the starter request signal.
  9. Battery power is supplied through starter relay and starter control relay to operate starter motor.
    CAUTION: If a malfunction is detected in the Intelligent Key system, "KEY" warning lamp in the combination meter illuminates. At that time, engine cannot be started.
  10. When the BCM receives a feedback signal from the ECM indicating that the engine is started, the BCM transmits a stop signal to IPDM E/R and stops the cranking by turning OFF the starter motor relay. (If the engine start is unsuccessful, the cranking operation stops automatically within 5 seconds.)
    CAUTION: When Intelligent Key is carried outside of the vehicle (inside key antenna detection area) while ignition switch is in the ACC or ON position, even if the engine start condition* is satisfied, engine cannot be started.

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

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