System Description

SIGNAL TRANSMISSION FUNCTION LIST

Signal name	Input	Output	Description
Inside key antenna signal	Intelligent Key unit	BCM (CAN) IPDM E/R (CAN)	Inputs the inside key antenna signal via CAN communication
NATS antenna amp. signal	Intelligent Key unit	BCM (CAN) IPDM E/R (CAN)	Inputs the NATS antenna amp. signal via CAN communication
Detent switch signal	Intelligent Key unit	BCM (CAN) IPDM E/R (CAN)	Inputs the engine status signal via CAN communication
Push-button ignition switch signal	Intelligent Key unit	BCM (CAN)	Inputs the push-button ignition switch signal via CAN communication
Each door switch signal	BCM	Intelligent Key unit (CAN)	Inputs the each door switch signal via CAN communication
Stop lamp switch signal	BCM	TCM (CAN)	Inputs the stop lamp switch signal via CAN communication
Clutch pedal position switch signal	BCM	IPDM E/R (CAN)	Inputs the clutch pedal position switch signal via CAN communication
Transmission range switch signal	IPDM E/R	TCM (CAN)	Inputs the transmission range switch signal via CAN communication

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 Intelligent Key unit 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 NVIS (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 NVIS (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.
For initialization and registration of Intelligent Keys, refer to CONSULT Immobilizer mode and follow the on-screen instructions.
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 NVIS (NATS) ID verification] is integrated into the Intelligent Key.

In that case, the NVIS (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 Intelligent Key unit 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 Intelligent Key unit.
Intelligent Key unit receives the Intelligent Key ID signal and verifies it with the registered ID.
Intelligent Key unit transmits the ignition power supply ON signal to IPDM E/R.
IPDM E/R turns the ignition relay-1 ON and starts the ignition power supply.
Intelligent Key unit detects that the selector lever position and brake pedal operating condition.
Intelligent Key unit transmits the starter request signal to BCM and turns the starter relay ON if Intelligent Key unit judges that the engine start condition* is satisfied.
IPDM E/R turns the starter cut relay ON when receiving the starter request signal.
Power supply is supplied through the starter relay and the starter cut 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 Intelligent Key unit receives feedback signal from ECM indicating that the engine is started, the Intelligent Key unit transmits a stop signal to IPDM E/R and stops cranking by turning OFF the starter cut 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 the table below "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 NVIS (NATS) ID verification between transponder in Intelligent Key and Intelligent Key unit 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:

NOTE:

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 Intelligent Key unit monitors under the engine start conditions:
CVT models:
- Brake pedal operating condition
- Selector lever position
- Vehicle speed
M/T models:
- Clutch pedal operating condition
- Vehicle speed

Vehicle speed: less than 2.5 MPH (4 km/h)

Power supply position	Engine start/stop condition			Push-button ignition switch operation frequency
	CVT models		M/T models
	Selector lever	Brake pedal operation condition	Clutch pedal operation condition
LOCK -> ACC	--	Not depressed	Not depressed	1
LOCK -> ACC -> ON	--	Not depressed	Not depressed	2
LOCK -> ACC -> ON -> OFF	--	Not depressed	Not depressed	3
LOCK -> START ACC -> START ON -> START	P or N position	Depressed	Depressed	1
Engine is running -> OFF	--	--	--	1

Vehicle speed: 2.5 MPH (4 km/h) or more

Power supply position	Engine start/stop condition			Push-button ignition switch operation frequency
	CVT models		M/T models
	Selector lever	Brake pedal operation condition	Clutch pedal operation condition
Engine is running -> ACC	--	--	--	Emergency stop operation
Engine stall return operation while driving	N position	Not depressed	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.