System Description
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
- The engine start function of Intelligent Key system makes it possible to start and stop the engine without using the key, based on the electronic ID verification. The electronic ID verification is performed between BCM and Intelligent Key when the push-button ignition switch is pressed while the Intelligent Key is within the detection area of inside key antenna.NOTE: The driver should carry the Intelligent Key at all times.
- Intelligent Key has 2 IDs [Intelligent Key ID and IVIS (NATS) ID]. It can perform the door lock/unlock operation and the push-button ignition switch operation when the registered Intelligent Key is carried.
- When Intelligent Key battery is discharged, engine can be started by operating push-button ignition switch after contacting Intelligent Key backside to push-button ignition switch. At that time, the IVIS (NATS) ID verification is performed.
- If the ID is successfully verified, when push-button ignition switch is pressed, the engine can be started.
- Up to 4 Intelligent Keys can be registered (Including the standard Intelligent Key) upon request from the customer.NOTE: Refer to System Description for any functions other than engine start function of Intelligent Key system.
PRECAUTIONS FOR INTELLIGENT KEY SYSTEM
The transponder [the chip for IVIS (NATS) ID verification] is integrated into the Intelligent Key. (For the conventional models, it is integrated into the mechanical key.) Therefore, ID verification cannot be performed by mechanical key only.
In that case, the IVIS (NATS) ID verification can be performed when Intelligent Key backside is contacted to push-button ignition switch. If verification result is OK, engine can be started.
OPERATION WHEN INTELLIGENT KEY IS CARRIED
- 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 the ignition relay ON and starts the ignition power supply.
- BCM detects that the selector lever position and brake pedal operating condition.
- BCM transmits the starter request signal to IPDM E/R and turns the starter relay in IPDM E/R ON if BCM judges that the engine start condition* is satisfied.
- IPDM E/R turns the starter control relay ON when receiving the starter request signal.
- Power supply is supplied through the starter relay and the starter control relay to operate the starter motor.CAUTION:
If a malfunction is detected in the Intelligent Key system, the "KEY" warning lamp in the combination meter illuminates. At that time, the engine cannot be started.
- When BCM receives feedback signal from ECM indicating that the engine is started, the BCM transmits a stop signal to IPDM E/R and stops cranking by turning OFF the starter motor relay. (If engine start is unsuccessful, cranking stops automatically within 5 seconds.)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.
*: For the engine start condition, refer to "POWER SUPPLY POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERATION".
OPERATION RANGE
Engine can be started when Intelligent Key is inside the vehicle. However, sometimes engine may not start when Intelligent Key is on instrument panel or in glove box.
ENGINE START OPERATION WHEN INTELLIGENT KEY IS CONTACTED TO PUSH-BUTTON IGNITION SWITCH
When Intelligent Key battery is discharged, the IVIS (NATS) ID verification between transponder in Intelligent Key and BCM is performed when Intelligent Key backside is contacted to push-button ignition switch. If the verification result is OK, engine can be started.
POWER SUPPLY POSITION CHANGE TABLE BY PUSH-BUTTON IGNITION SWITCH OPERATION
The power supply position changing operation can be performed with the following operations.
- When an Intelligent Key is within the detection area of inside key antenna and when Intelligent Key backside is contacted to push-button ignition switch, it is equivalent to the operations below.
- When starting the engine, the BCM monitors under the engine start conditions,
- Brake pedal operating condition
- Selector lever position
- Vehicle speed
Vehicle speed: less than 4 km/h (2.5 MPH)
| Power supply position | Engine start/stop condition | Push-button ignition switch operation frequency | |
|---|---|---|---|
| Selector lever | Brake pedal operation condition | ||
| LOCK → ACC | - | Not depressed | 1 |
| LOCK → ACC → ON | - | Not depressed | 2 |
| LOCK → ACC → ON → OFF | - | Not depressed | 3 |
| LOCK → START ACC → START ON → START |
P or N position | Depressed | 1 |
| Engine is running → OFF | - | - | 1 |
Vehicle speed: 4 km/h (2.5 MPH) or more
| Power supply position | Engine start/stop condition | Push-button ignition switch operation frequency | |
|---|---|---|---|
| Selector lever | Brake pedal operation condition | ||
| Engine is running → ACC | - | - | Emergency stop operation |
| Engine stall return operation while driving | N position | Not depressed | 1 |
Emergency stop operation
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times or more within 1.5 seconds.
REMOTE ENGINE START FUNCTION
Remote engine start function enables engine to be started from vehicle outside by operating REMOTE ENGINE START button of Intelligent Key or mobile phone.
In the same way as the Intelligent Key, the engine can be started by operating a cellular phone using the Telematics system function. For details, Refer to System Description .
Engine Start Procedures
The following operation enables the engine to be started.
- Press LOCK button of Intelligent Key, and then within 5 seconds, press and hold REMOTE ENGINE START button of Intelligent Key for 2 seconds or more.
- Perform engine start operation using a cellular phone.
Engine does not start while the vehicle is in the following status.
- All doors are UNLOCK or any door is open.
- Hood is open.
- A registered Intelligent Key is in passenger room.
- Shift position is other than P.
- Vehicle security alarm is in operation
- Hazard lamp is in operation.
- During remote engine run mode, the following display is indicated on information display in combination meter.
Display Display ON condition Display OFF condition During remote engine run mode Mode switch to normal engine run mode from remote engine run mode - While engine is in operation by Intelligent Key, engine status changes from remote engine run mode to normal engine run mode when push-button ignition switch is operated while brake pedal is depressed. The vehicle becomes available to drive.
Engine Stop Procedures
The following operation enables the engine to be stopped.
- Press REMOTE ENGINE START button of Intelligent Key.
- Perform engine stop operation using a cellular phone.
- Push-button ignition switch is operated.
Engine stops when the vehicle status changes to the following status
- 10 minutes are passed since engine start.
- Hood is open.
- Shift position is shifted to a position other than P.
- Vehicle security alarm starts to operate.
Operation Area
The engine can be started when the vehicle is under the following conditions.
- The remote engine start operating range is approximately 60 m (197 ft.) from the vehicle.
- The vehicle is within the communication range of the Infiniti Connection™ data center.