Operation Description

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION


Operation Description


SYSTEM DIAGRAM






OPERATION WHEN INTELLIGENT KEY IS CARRIED

Description
1. When the push-button switch is pressed, the Intelligent Key unit signals the inside key antenna and sends the request signal to the Intelligent Key.
2. The Intelligent Key receives the request signal and sends the Intelligent Key ID signal to the Intelligent
Key unit via the remote keyless entry receiver.
3. The Intelligent Key receives the Intelligent Key ID signal and verifies it with the registered ID.
4. If the ID is successfully verified, the Intelligent Key unit sends the steering unlock signal to the steering lock unit. Then, it sends each power supply request signal to PDU (Power Distribution Unit) after unlocking the steering lock.
5. If the Intelligent Key unit judges that the engine start condition is satisfied, it sends the starter request signal via CAN communication to IPDM E/R and turns the starter motor relay ON.
6. The steering lock unit unlocks the steering lock when receiving the signal. PDU starts the power supply distribution according to the push-button ignition switch operation when receiving the signal. If it enters the engine start permission mode, the power supply is supplied from PDU to the starter motor relay and the cranking is started.

CAUTION:
If a malfunction is detected in the Intelligent Key system, the "KEY" warning lamp in the combination meter illuminates for 15 seconds. At that time, the engine cannot be started.
7. When Intelligent Key unit received feedback signal from ECM acknowledging the engine has been initiated, the Intelligent Key unit sends a stop signal to IPDM E/R and stops the cranking by turning OFF the starter motor relay. (If the engine initiating has failed, the cranking will stop automatically within 5 seconds.)

CAUTION:
When the Intelligent Key is carried outside of the vehicle (inside key antenna detection area) with the power supply in ACC or ON position, even if the engine start condition* is satisfied, the engine cannot be started.
*: For the engine start condition, refer to "PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE".

Operation Range
Engine can be started when Intelligent Key is inside the vehicle. However, sometimes engine might not start when Intelligent Key is on instrument panel or in glove box.

OPERATION WHEN KEY SLOT IS USED
When the Intelligent Key battery is discharged, it performs the immobilizer ID verification between the integrated transponder and BCM by inserting the Intelligent Key into the key slot, and then the engine can be started.
For details relating to starting the engine using key slot, IVIS (Infiniti Vehicle Immobilizer System-NATS).

PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE
The power supply position changing operation can be performed with the following operation.

NOTE:
- When an Intelligent Key is within the detection area of inside key antenna and when it is inserted to the key slot, it is equivalent to the operations below.
- When starting the engine, the Intelligent Key unit monitors the engine start conditions (brake pedal operating condition, A/T selector lever position, and vehicle speed).
- Unless each start condition is fulfilled, the engine will not respond regardless of how many times the engine switch is pushed. At that time, illumination repeats the position in the order of LOCK to ACC to ON to LOCK.