Engine Start Operation When Intelligent Key Is Contacted To Push-Button Ignition Switch (For 2.0L Turbo Gasoline Engine Models)
WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.
- When brake pedal is depressed while selector lever is in the P position, BCM activates NATS antenna amp. that is located behind push-button ignition switch.
- When Intelligent Key (transponder built-in) backside is contacted to push-button ignition switch, BCM starts NATS ID verification between BCM and Intelligent Key (built-in transponder) via NATS antenna amp.
- When NATS ID verification result is OK, buzzer in combination meter sounds and BCM transmits the result to ECM.
- When push-button ignition switch is pressed, BCM transmits steering unlock signal to steering lock unit and IPDM E/R.
- IPDM E/R turns steering lock relay ON and supplies power supply to the steering lock unit.
- The steering lock is released.
- BCM transmits the power supply stop signal to IPDM E/R when detecting that the steering lock is in the unlock position.
- IPDM E/R turns steering lock relay OFF and stops power supply to the steering lock unit.
- 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" below.