Engine Start Operation When Intelligent Key Is Contacted To Push-Button Ignition Switch

1. When brake pedal is depressed while selector lever is in the P (Park) position, Intelligent Key unit activates NATS antenna amp. that is located behind push-button ignition switch.
2. When Intelligent Key (transponder built-in) backside is contacted to push-button ignition switch, Intelligent Key unit starts NVIS (NATS) ID verification between Intelligent Key unit and Intelligent Key (transponder built-in) via NATS antenna amp.
3. When the NVIS (NATS) ID verification result is OK, buzzer in combination meter sounds and Intelligent Key unit transmits the result to ECM.
4. Intelligent Key unit turns ACC relay ON and transmits ignition power supply ON signal to IPDM E/R.
5. IPDM E/R turns the ignition relay ON and starts the ignition power supply.
6. Intelligent Key unit detects that the selector lever position is P (Park) or N (Neutral).
7. Intelligent Key unit transmits starter request signal to IPDM E/R and turns the starter cut relay in IPDM E/R ON if Intelligent Key unit judges that the engine start condition* is satisfied.
8. BCM turns the starter relay ON when receiving the starter request signal.
9. IPDM E/R turns the starter cut relay ON when receiving the starter request signal.
10. Power supply is supplied through the starter relay and the starter cut relay to operate the starter motor.
11. When Intelligent Key unit receives feedback signal from ECM indicating that the engine is started, Intelligent Key unit transmits a stop signal to IPDM E/R and stops cranking by turning off the starter relay. (If engine start is unsuccessful, cranking stops automatically within 5 seconds.)

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